Levels Of Total Dissolved Solids Research Articles

Preliminary assessment of <i>Moringa oleifera</i> seed as a flocculation agent for purification of drinking water

Sachet and borehole water are the major sources of drinking water for many in Nigeria. However, there are still concerns about drinking water purity in Nigeria. This study was conducted to determine the parasites associated with sachet and borehole drinking water and to determine the efficacy of Moringa oleifera seed in the flocculation treatment of sachet and borehole water. A total of 75 sachet water from 15 brands, and 10 different borehole water samples were collected from the study area. Moringa seed was processed and maceration was done to extract the active ingredients. Of the 75 sachet water samples from 15 brands examined, none had any parasites. However, all the brands contained varying degrees of Total Dissolved Solids (TDS). Brand N had the highest (147.1mg/L), while Brand G had the least (4.62mg/L). After treatment, the TDS values of all the water samples were reduced by more than 50% in each of the brands. There was no significant association in the particle load among the sachet water brands (P>0.05, P=0.141). All 10 borehole water samples examined also contained varying degrees of TDS. The highest level of TDS in the study (635.4mg/L) and Ova of Ascaris lumbricoides was observed in sample E. After treatment, the TDS values of all the water samples were reduced. Also, ova of A. lumbricoides was no longer observed in the sample E. In this study, M. oleifera seed has demonstrated a high level of efficacy as a flocculation agent for the purification of drinking water. Therefore, we recommend further studies to determine how the seed could be used safely as a household and industrial water flocculant.

Enhancing wheat productivity utilizing nano- and bio-fertilizers in water-scarce Sinai, Egypt, under different irrigation systems

ABSTRACT This study investigates the impact of different fertilizers under varying irrigation systems and crop water requirements in water-scarce Sinai, Egypt. Field experiments were conducted during the agricultural winter seasons of 2021 and 2022 to study the response of wheat growth, yield, and water productivity under drip and furrow irrigation. The results showed that under drip irrigation system, pH showed no clear trend, while total dissolved solids (TDS) decreased with depth and were reduced by bio-fertilizer and the combination treatment. On the other hand, under furrow irrigation system, maintained a slightly alkaline pH with minimal fertilizer influence. TDS levels significantly varied, and the effects of fertilizers differed. Calcium carbonate content and organic matter varied with fertilizer types and depths. Increasing the crop water requirement from 80% to 100% improved plant growth and yield, with the 80% treatment demonstrating higher water productivity. Furrow irrigation resulted in higher growth and yields, while drip irrigation exhibited greater water productivity. Nano-fertilizer treatments consistently outperformed bio-fertilizer in growth, yields, and water productivity. Specific combinations showed superior performance due to interactions between factors. Suitable irrigation methods and regimes enhance water use efficiency. Higher irrigation levels enhance wheat growth and yield, requiring careful water management to avoid stress. Drip irrigation demonstrates superior water productivity. Reducing the water input to 80% of crop water requirements improves efficiency without compromising yield. Nano-fertilizers promote growth and grain retention as an alternative to soluble fertilizers. Combining nano with bio-fertilizers further enhances wheat growth, yield, and water productivity. These findings provide valuable insights for optimizing wheat production in water-scarce regions, considering irrigation methods, crop water requirements, and nitrogen fertilization sources.

Morphogenesis of Hollow Bulbous Gypsum Structures Along a Brine Spring in Northeast Alberta

Abstract The stromatolite tufa mound at La Saline Lake developed along the Athabasca River Valley in northeast Alberta consists of a 30 m-high structure with a multi-meter thick caprock of stratified gypsum. The gypsum caprock developed when the meteoric-charged groundwater channeled along shallowly buried Upper Devonian limestone was redirected deeper and encountered anhydrite beds of the Middle Devonian Prairie Evaporite Formation, only 175–200 m below. Discharge of the sulfate-saturated brine from the central vent of the gypsum caprock eventually ceased and the flow was redirected to the western lakefront bank of the tufa mound. This active brine spring, characterized by total dissolved solids level of ∼79,000 mg/L, is channeled along a 25 m gully toward La Saline Lake. The bottom sediment in each of the interconnected brine pools along the gully consists of a 2–4 cm-thick calcite-gypsum thrombolite and an overlying gypsum crust. This sulfate crust developed as densely packed arrays of hollow botryoidal to hemispheroidal and bulbous gypsum protuberances, each 0.5–1.5 cm long, that extend upward into the brine. This is the first documented example of bulbous protuberances of gypsum that developed within brine pools with hollow interiors. The unusual hollowness of these bulbous gypsum protuberances resulted from the rapid encasement of gas bubbles that ascended from the underlying thrombolite ooze and were trapped within the overlying microbial mats and meshwork of gypsum crystallites on the surface of the bottom pool sediment. Nanoscale biomineralization of gypsum developed along the parallel arrays of microbial stalks within the enveloping mat, resulting in a meshwork of parallel aligned crystallites that encased the surfaces of the trapped bubbles. Continued abiotic gypsum precipitation transitioned the abiotic crystallites into enlarged needle-form crystallites distributed as parallel arrays along curvilinear growth surface laminae. Sufficient rigidity on the bubble surfaces precluded implosion-collapse or detachment. Strontium adsorption widely stabilized the acicular crystals, inhibiting complete coalescence as gypsum spar.

Spatial Variability of Selected Soil Chemical Parameters in Low-yielding Paddy Production Block in Mahaweli System H, Sri Lanka

Although water availability for paddy production in Mahaweli System H is abundant, paddy yield is lower in Nochchiyagama (278 km2), chosen for soil assessment. Paddy yield data were used to identify the low-yielding division using the area-weighted average. Twenty-five random locations were generated, and soil samples were collected for pH, soil conductivity (EC), salinity, and total dissolved solids (TDS) analysis. ArcGIS software was used to create spatial distribution maps and related geostatistical analyses for each parameter. Vector files were created with their associated properties, and thematic maps were generated using spatial interpolation techniques, such as universal kriging (UK), ordinary kriging (OK), and inverse distance weighted (IDW) methods of interpolation techniques to identify the best interpolation method for soil chemical parameters mapping. The entire Nochchiyagama land was observed to have a slightly acidic pH (5.6-5.9) range that may have affected rice crop growth due to nutrient mobility and uptake issues. The spatial interpolation evaluation suggests that at least two-thirds of the area observed for lower TDS levels (591-654 mg/L) is potentially unsafe paddy production. Elevated levels of EC (3.1-7.24 dS/m) along with TDS may lead to physiological drought due to interferences in ion uptake. In overall, spatial interpolation evaluation indicators suggest that the UK method was observed with a lower mean relative error (MRE) than the other two interpolations. However, EC distribution showed low MRE in both IDW and OK interpolation techniques. The IDW method was observed to have a lower RMSE (Root mean square error). The UK spatial interpolation performed better for TDS and salinity predictions than other methods. This study found consistent regional differences in low paddy yields in Mahaweli system H using the UK method for analyzing soil chemical parameters. 
 Keywords: Electrical conductivity, Interpolation errors, Salinity, Spatial interpolation

Effect of water quality on causes of calf mortality in cattle-farm-associated epidemics

Abstract. Poor-quality drinking water plays a detrimental role in the suppression of calf immunity, giving rise to an increased rate of calf mortality. The present study aims to evaluate the causes of calf mortality in beef and dairy farms in relation to drinking water quality (DWQ). A convenience sample of 132 Egyptian cattle farms suffering from emerging epidemics was surveyed by collecting drinking water samples for physicochemical and microbial analysis and using a questionnaire to record hygienic risk factors affecting calf health. Statistical analysis correlates water parameters with rates of calf diarrhea, respiratory problems, severe depression, sudden death and mortality. High percentages of water sample quality parameters, e.g. pH, total dissolved solids (TDSs), hardness, chloride, nitrate, sulfate, total colony count (TCC) and total coliform count (TCFC), are above permissible limits. Water parameters, except pH, show a significant moderate positive correlation with causes of calf mortality (ρ 0.331–0.66) in winter and summer. Each cause of calf mortality was predicted by a specific water parameter, and the water nitrate level was the highest predictor, with the highest values (β = 0.504–0.577), followed by the water TDS, sulfate and microbial levels. Weak to moderate correlation (ρ 0.151–0.367) was found between calf mortality causes and some hygienic risk factors such as operation type, calf housing, calf feeders, bedding type, water source, water pipe type, drinker lining and wheel dipping. We could conclude that DWQ greatly affects causes of calf mortality, but we cannot exclude some farm hygienic risk factors.

GROUND WATER QUALITY AND ITS IMPACT ON HUMAN HEALTH IN DUNGARPUR DISTRICT OF RAJASTHAN, INDIA

Abstract. Dungarpur, one of the most backward districts of India, is a predominantly tribal region of Rajasthan state. Ground water is the major source of drinking water in the region. High concentrations of Fluoride (F) and Iron (Fe) have been reported in the region which poses high risk of rampant water-borne diseases. This study evaluates the ground water quality for drinking purpose in terms of 10 hydro-geochemical and two biological parameters in context of causative factors like land use and geology of the region. The occurrence of water borne diseases in resident population has been examined in association with quality of drinking water and priority areas for policy intervention have been identified. Water samples have been collected from 173 drinking water sources and 346 households consuming water from the selected sources have been surveyed for prevalence of water borne diseases. Water quality surfaces have been mapped in terms of F, Total Dissolved Solids (TDS), Hardness, Fe, alkalinity, Faecal Coliform (FC), E. Coli, and Water Quality Index (WQI) computed on the basis of 10 geochemical parameters, using Inverse Distance Weighted (IDW) method. Results reveal that the north-eastern part comprising Aspur, Sabla and part of Sagwara tehsils predominantly has ‘very poor’ to ‘unsuitable’ water quality. The western part has excessive faecal contamination. Entire district has high levels of TDS and hardness, while excessive Fe and F occur in specific regions. Disease incidence closely corresponds to the geochemical and microbial composition of water. Higher values of WQI correspond with occurrence of Phyllites and Mica Schists.

Investigation of extraction phenomena in continuous circulation coffee brewing and comparison with other brewing methods

AbstractThis study investigated a continuous circulation cold brewing (CCCB) process using a modified single‐serve brewer that allowed recirculation of the brew within the single‐use capsules. The changes of total dissolved solids (TDS), titratable acidity (TA), caffeine and 5‐caffeoylquinic (5‐CQA) concentrations over time during the CCCB process were evaluated using two masses of coffee grounds (10 and 12.5 g). To elucidate the extraction process, Weibull distribution, pseudo‐first order, and pseudo‐second order models were fitted to the extraction kinetics data. The physicochemical quality of the brews produced from the CCCB process were also compared to brews produced though traditional cold brew steeping (separated by gravity and forced filtration) and single‐serve hot brewing processes. Significantly lower (p < 0.05) TDS, TA, and 5‐CQA concentrations than traditional cold brew methods were observed. This observation was due to flow channeling/detachment phenomena in the coffee bed which resulted in localized flow and reduction of coffee‐water contact area. In comparison, the 30 min full immersion processes resulted in approximately 70% of the TDS, TA, and caffeine levels during the first 30 min of brewing, suggesting that cold brewing processes may not have to be >8 h in length if these are the targeted brew quality indices.Practical applicationsThis study examined the kinetics and physicochemical quality of continuous circulation cold brewing of coffee and compared it to traditional full immersion cold brewing methods. The findings in this study indicated that: (1) The brew recirculation method explored was not on par with traditional full immersion cold brewing methods in terms of extraction yield due to flow channeling issues present in single‐use capsules; (2) The extraction time of traditional cold brewing processes can potentially be shortened on the basis of TDS, TA and caffeine content; (3) The choice of filtration mechanism is significant when considering the extraction yield of a brewing process.

The effectiveness of using coconut husk powder as an adsorbent to enhance the wastewater quality of the cepuk textile industry in Nusa Penida, Bali, Indonesia

Introduction: Tenun Cepuk (traditional woven) from Nusa Penida holds great potential as a traditional textile art form, cherished for its intricate patterns and cultural significance. However, the textile industry's wastewater, with its dye-related pollution, presents a significant environmental challenge that needs sustainable solutions. Coconut husk powder exhibits promising potential as an adsorbent for treating dye wastewater from the textile industry. Investigating the interplay between varying thicknesses and contact durations is crucial to maximizing coconut husk powder's adsorption capacity and efficiency for dye wastewater treatment. Method: This study, following an Experimental research design with a Posttest Only Control Group Design, aims to assess the impact of an intervention on the experimental group compared to the control group. Coconut fibers, sourced from Nusa Penida agriculture, serve as the adsorbent. Coconut powder is added to these tanks at thicknesses of 5 cm, 10 cm, and 15 cm. Subsequently, wastewater samples from the Cepuk weaving process are introduced into each experimental tank, along with a control group. The process is left for 24 and 72 hours as varying contact times. The adsorption results are subjected to analysis for parameters, including total suspended solids (TSS), total dissolved solids (TDS), five-day biochemical oxygen demand (BOD5), and chemical oxygen demand (COD) at the Panureksa Denpasar Laboratory. Results: The use of coconut husk powder as an adsorbent effectively lowers TDS, TSS, BOD5, and COD in Cepuk textile dye wastewater. The reduction depends on adsorbent thickness and contact time. Thicker adsorbents notably reduce TDS, TSS, BOD5, and COD, enhancing wastewater quality and environmental safety. A 15 cm-thick adsorbent effectively reduces TDS to permissible levels. Prolonged contact times also significantly lower levels. Conclusion: Coconut husk powder can be utilized to decrease TDS, TSS, BOD5, and COD levels in textile dye wastewater. Thickness and contact time significantly impact the enhancement of wastewater quality.

Assessment of Anthropogenic Impact on Ecosystem Service Safety of Agboyi River in Lagos, Southwestern, Nigeria

The Agboyi River in Lagos, Nigeria provides important ecosystem services; however, anthropogenic activities are polluting the river, necessitating periodic monitoring. This study assessed the heavy metal content (lead, cadmium, chromium, copper, and arsenic) in water samples from the river. Additionally, we evaluated various physicochemical parameters, including pH, total dissolved solids (TDS), conductivity, hardness, magnesium, calcium, chloride, sulfate, and nitrate. The values of each heavy metal were used to calculate human average daily ingestion (ADI), average daily dermal exposure (ADDE), hazard quotient (HQ), and carcinogenic risk (CR). The physicochemical analysis revealed non-permissible levels of TDS, electrical conductivity, alkalinity, hardness, magnesium, calcium, sulfate, nitrate, chloride, and phosphate. The heavy metal analysis showed intolerable levels of lead, arsenic, cadmium, chromium, and copper. The ADIs for the heavy metals were within the recommended dietary intake (RDI), but their ADDEs exceeded the RDI, except for chromium. The HQ and CR for all heavy metals exceeded recommended limits. Seasonal variations were observed in the physicochemical parameters, with TDS, turbidity, acidity, nitrate, and phosphate being higher in the wet season, while other parameters were higher in the dry season. The water poses health hazards to users, indicating the need for river remediation.

Influence of the concentration and nature of total dissolved solids in brackish groundwater on water intake, nutrient utilization, energy metabolism, ruminal fermentation, and blood constituents in different breeds of mature goats and sheep

Brackish water is being progressively utilized in livestock farming across the globe where freshwater is scarce, potentially leading to detrimental consequences for animal health and performance. This study was conducted to determine effects of different brackish groundwater types on water and feed intake, nutrient utilization, ruminal fluid characteristics, and blood constituent concentrations in different breeds of goats and sheep in a 6 (animal types; AT) × 6 (water treatments; WT) Latin square design. Six AT (Boer, Spanish, and Tennessee Stiff-Leg does and Dorper, Katahdin, and St. Croix ewes) consumed drinking water differing in total dissolved solids (TDS) and mineral composition. Six WT were fresh water (FRW; 287 mg TDS/kg), a natural brackish water (BR) alone (100-BR; 5734 mg TDS/kg), BR with concentrations of all minerals increased by about 100 % (200-BR; 10,603 mg TDS/kg), FRW added with NaCl having similar TDS level (6654 mg/kg) as 100-BR (100-SL), FRW added with NaCl having similar TDS (12,197 mg/kg) as 200-BR (200-SL), and water with similar TDS (10,643 mg/kg) level as 200-BR by adding NaCl to 100-BR (200-BR/SL). Water treatment only affected (P < 0.05) water intake, total volatile fatty acids in ruminal fluid, blood phosphorus, blood aldosterone, and plasma osmolality. Water intake was greater (P < 0.05), but total ruminal volatile fatty acid concentrations were lower (P < 0.05) for 200-SL than other WT. Plasma osmolality and aldosterone concentrations were lower (P < 0.05) for 200-SL and 200-BR/SL than FRW. There were no significant interactions between WT and AT for any variable. Water and feed intake, digestibilities, ruminal ammonia concentration, and methane emission were similar among AT (P > 0.05). There were differences (P < 0.05) among AT for many ruminal fermentation and blood characteristics. Although there were some differences among WT, no AT seemed adversely affected by water with a TDS level near or slightly above 10,000 mg/kg regardless of mineral sources.

Water Quality Index and Human Health Risk Assessment of Drinking Water in Selected Urban Areas of a Mega City.

The present study was conducted to evaluate the quality of drinking water and assess the potential health hazards due to water contaminants in selected urban areas of Lahore, Pakistan. Water samples were collected from ten sites and analyzed for different physico-chemical parameters including turbidity, color, pH, total dissolved solids (TDS), nitrates, fluoride, residual chlorine, and total hardness. Additionally, heavy metal (arsenic) and microbial parameters (E. coli) were also determined in the water samples. Drinking water quality evaluation indices, including the water quality index (WQI) for physico-chemical and biological parameters and human health risk assessment (HHRA) for heavy metal were estimated using the analytical results of the target parameters. It was found in most of the areas that the levels of arsenic, fluoride, TDS, and residual chlorine were higher than those recommended by the National Environmental Quality Standard (NEQS) and World Health Organization (WHO) guidelines. In addition to the physico-chemical parameters, microbial content (E. coli) was also found in the drinking water samples of the selected areas. Statistical analysis of the results indicated that levels of target parameters in drinking water samples are significantly different between sampling sites. The WQI for all physico-chemical and microbial parameters indicated that drinking water in most of the areas was unfit and unsuitable (WQI > 100) for drinking purposes except for the water of Bhatti Gate and Chota Gaon Shahdara with a WQI of 87 and 91, respectively. Drinking water in these areas had a very poor WQI rating. According to HHRA, drinking water from the selected sites was found to be of high risk to children and adults. The carcinogenic risk of arsenic indicated that all samples were of high risk to both adults and children (4.60 and 4.37 × 10-3, respectively). Regular monitoring of drinking water quality is essential, and proactive measures must be implemented to ensure the treatment and availability of safe drinking water in urban areas.

Spatial and Temporal Dynamics of Key Water Quality Parameters in a Thermal Stratified Lake Ecosystem: The Case Study of Lake Mead

Lake Mead located in the Arizona–Nevada region of the Mohave Dessert is a unique and complex water system whose flow follows that of a warm monomictic lake. Although monomictic lakes experience thermal stratification for almost the entire year with a period of complete mixing, the lake on occasion deviates from this phenomenon, undergoing incomplete turnovers categorized with light stratifications every other year. The prolonged drought and growing anthropogenic activities have the potential to considerably impact the quality of the lake. Lake Mead and by extension the Boulder Basin receive cooler flow from the Colorado River and flow with varying temperatures from the Las Vegas Wash (LVW), which impacts its stratification and complete turnovers. This study analyzes four key water quality parameters (WQPs), namely, total dissolved solids (TDS), total suspended solids (TSS), temperature, and dissolved oxygen (DO), using statistical and spatial analyses to understand their variations in light of the lake stratifications and turnovers to further maintain its overall quality and sustainability. The study also evaluates the impacts of hydrological variables including in and out flows, storage, evaporation, and water surface elevation on the WQPs. The results produced from the analysis show significant levels of TDS, TSS, and temperature from the LVW and Las Vegas Bay regions compared with the Boulder Basin. LVW is the main channel for conveying effluents from several wastewater treatment facilities into the lake. We observed an increase in the levels of TDS, TSS, and temperature water quality in the epilimnion compared with the other layers of the lake. The metalimnion and the hypolimnion layer, however, showed reduced DO due to depletion by algal blooms. We observed statistically significant differences in the WQPs throughout various months, but not in the case for season and year, an indication of relatively consistent variability throughout each season and year. We also observed a no clear trend of influence of outflows and inflows on TDS, temperature, and DO. TSS concentrations in the lake, however, remained constant, irrespective of the inflows and outflows, possibly due to the settling of the sediments and the reservoir capacity.

Fault Control on Groundwater Flow in An Alluvial Aquifer, Chaman and Khojak Basins, Balochistan, Pakistan

Geological structures such as faults play a critical role in the flow of fluids in a reservoir by affecting its permeability. This study explores the role of the Chaman Fault in the distribution of hydrological division, groundwater separation of the aquifer systems of Khojak and Chaman basins. The Chaman Fault is a left-lateral strike-slip transform plate boundary located at the border city of Chaman, District Killa Abdullah, Balochistan. The Chaman fault plays an important role in the division of groundwater in the subsurface, accommodating the structural compartment of the aquifer system. The studies showed that the strike-slip movement of the fault made the aquifer impervious along the fault line. This assertion may also be confirmed by the drastic change in the water table across the fault. Sharp changes in the groundwater table and Total Dissolved Solids (TDS) were observed during the study. The Karazes which are an indigenous method of irrigation is present in the eastern foothills of Khojak mountains called Khojak basin. Here the water table is as shallow as ≈ 6 meters in comparison to the western side of the fault, where the water table drops to ≈274 meters towards the valley of Chaman basin. The average TDS level on the eastern side of the fault line is 773 mg/L and 1361 mg/L on the western side. Therefore, the Chaman fault is acting as a groundwater barrier which is feeding the Karezes for centuries.

Effects of Pretilachor Pyribenzoxim Pollution on the Water Quality, Serum Biochemical Indices, and Behavioural Response of Oreochromis niloticus Juveniles

Aims: The effects of Pretilachor pyribenzoxim (PP) pollution on the water quality, serum biochemical indices, and behavioural response of Oreochromis niloticus Juveniles were studied.&#x0D; Study Design: The completely randomized design was used in this study.&#x0D; Place and Duration of Study: The experiment was carried out in the Central Laboratory of the Fisheries and Aquaculture Department, Faculty of Agriculture, Adekunle Ajasin University Akungba-Akoko, Nigeria, between January and March 2023.&#x0D; Methodology: The experiment was carried out in 30 L of non-chlorinated and aerated water in rectangular plastic tanks (45cm x 30cm x 30cm). 250 juveniles O. niloticus of both sexes were collected from Federal University of Technology, Akure, Ondo state and acclimatized for 14days in the laboratory. During rearing period, the fish were fed coppen feed at 2% body weight. In a definitive test, a group of 10 fish specimen (11.3-17.5cm length and 10.5-32.3g weight) were treated at random to nominal PP doses of 0.0, 0.10, 0.125, 0.150, 0.175, and 0.2 ml being diluted in 30 litres of water and labelled T1. T2, T3, T4, T5 and T6, respectively in triplicate. The LC50 of PP, test water's physicochemical, behavioural responses and serum biochemical indices were determined.&#x0D; Results: The dissolved oxygen depleted (P&lt;0.05) in T5 and T6, compared to T1 and the rest of the treatments. The water conductivity increases (P&lt;0.05) with an increased concentration of PP contamination. The water's total dissolved solids levels increased progressively with an increase in PP concentration. The total dissolved solids in T5 and T6 were similar (P&gt;0.05) to T4 but lower (P&lt;0.05) than T1 and T2. Juveniles in treatments 2, 3, 4, 5 and 6 shows behavioural responses such as loss of reflex, fin deformation, erratic swimming, air gulping, and moulting. The serum total protein of the juveniles in treatments 2, 3, 4, 5 and 6 was lower (P&lt;0.05) than T1. Serum creatinine level increased with increased PP contamination from treatments 1 to 6. The serum aspartate aminotransferase (AST) of the juvenile in T3, T4, T5 and T6 were higher (P&lt;0.05) than in T1. The serum Alanine aminotransferase (ALT) of the juvenile in T2, T3, T4, T5 and T6 were significantly (P&lt;0.05) higher than T1.&#x0D; Conclusion: The exposure of juvenile O.niloticus to PP contamination affected the physicochemical properties of water, behaviour and Serum biochemicals of juvenile O. niloticus fish. Hence, leaching of pp into water bodies through Agricultural activities should be mornitored to reduce lost of fish which can lead to economic detune.

Effect of Water TDS, on the Growth of Plant (Phaseolus vulgaris)

Water is the major constituent of life for the growth of animals and flora species. Water is available around the world with different Total Dissolved Solids (TDS) levels and minerals. On the basis of TDS, the hardness and softness of water are determined. (Underground water and oceanic water are found to have higher TDS than fresh water).&#x0D; Aim: To understand the effect of TDS on the growth of plant.&#x0D; Objectives: A study was conducted on the basis of the TDS of water to observe the effect of TDS on the growth of phaseolus vulgaris (kidney bean) plants and to check whether the water TDS is responsible for the growth of the plants or not.&#x0D; Methods: Water of different TDS levels was collected from Gwalior district (Gwalior, Gwalior fresh water Takenpur, and distilled water). Water has different TDS levels ranging from 95ppm (Parts Per Million), 750ppm, 2000ppm, distilled water with 0ppm TDS, and acidic distilled water (pH 3.5–4, by adding HCl acid). The kidney beans (phaseolus vulgaris) were purchased from a local mart and sowed into the washed sand with a neutral pH of 7, and the growth was observed under sunlight. (Each pot containing 7 beans).&#x0D; Results: The result of the experiment was positive as required, as the water TDS level affects the growth of plants. It has been observed that distilled water with a TDS of 0 ppm shows almost no growth, but a TDS of 750 ppm shows the maximum growth. Therefore, it has been concluded that TDS is also responsible for the growth of plants, and this practice can be done on a large scale also for the best result of growth.

Effective Management Changes to Reduce Halogens, Sulfate, and TDS in the Monongahela River Basin, 2009–2019

The Monongahela River Basin has an extensive history of fossil fuel development, including coal mining and natural gas extraction. In late summer 2008, total dissolved solids (TDS) concentrations exceeding the United States Environmental Protection Agency′s (EPA) secondary drinking water standards were detected. After determining the source, a voluntary discharge management plan (VDMP) was developed by the West Virginia Water Research Institute (WVWRI) and implemented by the coal industry (2010). Additional remediation actions included Pennsylvania’s prohibition of produced wastewater in publicly owned treatment facilities (2011) and construction of a reverse osmosis treatment facility (2013). We used a locally weighted polynomial regression in conjunction with a segmented regression to assess the discharge and concentration trends/changepoints for bromide, chloride, sulfate, and total dissolved solids at various locations relative to the three remedial actions. We detected significant (α &lt; 0.05) positive trends for discharge and significant negative trends for bromide, chloride, sulfate, and total dissolved solids. In conjunction, we also detected 1–4 changepoints within each model. Additionally, a linear mixed effects model containing discharge and remedial actions was used to measure the effectiveness of each remediation action in reducing TDS over time. Of the three remedial actions, the VDMP by itself was effective in maintaining river sulfate and TDS levels below the secondary drinking water standards (−0.12, p-value = 0.002). The combination of the VDMP with Pennsylvania’s produced water prohibition (−0.16, p-value &lt; 0.001) and the combination of the VDMP with the reverse osmosis treatment facility (−0.19, p-value &lt; 0.001) were also effective. The use of all three remedial actions produced the strongest effect (−0.37, p-value &lt; 0.001) Since the implementation of these changes, primarily the VDMP which encompasses most of the watershed, TDS in the Monongahela has not exceeded the EPA′s secondary drinking water standards. Future management decisions should include efforts to further expand the VDMP and to monitor changes in land use or severe changes in discharge.

Ground Water Quality Assessment for Sustainable Drinking Purpose

Ground water is the purest form of water that can be in used agriculture and consumption purposes. Several factors have an impact on the quality of groundwater, including seasonal changes, the composition of dissolved salts, the water table’s elevation, and the geology of a particular location. The dumping of unexpurgated factory waste directly through watercourses, which results in substantial pollutants level in underground water as well as the surface, is the primary cause of groundwater contamination. As the human population increases, the groundwater becomes even more important for economic and social activity. The study conducted in the Bhubaneswar region of Orissa, India focused on assessing the water quality suitability of groundwater for drinking purposes. The research found that microorganisms had contaminated the groundwater. The study collected 40 water samples from four selected localities, and various analysis methods were conducted to assess the physicochemical and microbiological parameters of the collected samples. The physico-chemical parameters studied included total dissolved solids (TDS), pH, turbidity, total hardness, and chloride. The microbiological parameters studied were F. coliform and E. coli. The research found that some regions had TDS and total hardness levels below acceptable limits, according to IS 10500:2012. The chloride concentration was below the desired limit. However, the pH in some locations was much lower than acceptable. Overall, this study highlights the importance of regularly monitoring and assessing the quality of groundwater in different regions to ensure that it is safe for human use. The findings of this study can help policymakers and local authorities to develop effective strategies to protect groundwater resources and ensure that they remain safe for future generations.

Laboratory Comparative Study of Anionic and Cationic High-Viscosity Friction Reducers in Moderate to Extremely High Total Dissolved Solids Environments

Summary High-viscosity friction reducers (HVFRs) have been recently gaining more attention and increasing in use, not only as friction-reducing agents but also as proppant carriers. Reusing produced water has also been driven by both environmental and economic benefits. Currently, most friction reducers on the market are anionic friction reducers, which are fully compatible with most produced water with low to medium level of total dissolved solids (TDS) but show a significant drop at high TDS conditions in terms of their friction reduction performance in most cases. On the contrary, cationic friction reducers are believed to have better TDS tolerance and friction reduction performance under high TDS conditions. However, concerns remain about performance of using anionic and cationic HVFRs with produced water to transport proppant. The ultimate objective of this experimental study is to comparably analyze the proppant transport capabilities of anionic and cationic HVFRs in high TDS and reservoir temperature environments. An anionic HVFR and a cationic HVFR, both at 4 gallons per thousand gallons (GPT), were selected and analyzed. The rheology measurements of these anionic and cationic HVFRs were conducted in deionized (DI) water and high TDS water conditions. Static and dynamic proppant settling tests were conducted at various TDS conditions at reservoir temperature. Wall retardation and particle hindering on the performance of both anionic and cationic HVFRs were also observed and investigated using the particle image velocimetry (PIV) method. The results showed that the anionic HVFR had higher viscosity than the cationic HVFR due to larger molecular weight and had much higher elasticity. Increase in TDS concentration would decrease the viscous and elastic profiles of both anionic and cationic HVFRs. In particular, the elastic profile became negligible for both HVFRs. Besides, the “critical salinity” phenomenon was observed. Above this salinity, the viscosity of HVFRs was no longer affected by increasing TDS level. The “critical salinity” for both of the 4-GPT anionic and cationic HVFRs was in the range of 30 000 to 200 000 mg/L. Moreover, the cationic HVFR had lower “critical salinity” than the anionic HVFR. Finally, the correlation between rheology and proppant transport capabilities of HVFRs is discussed in this paper, and a simplified decision-making process of selecting fracturing fluids is proposed.

Heavy metal pollution in leachates and its impacts on the quality of groundwater resources around Iringa municipal solid waste dumpsite.

Heavy metal pollution in groundwater due to leachates leaking from the Iringa municipal dumpsite was investigated. The pollution was studied by analyzing pH, electrical conductivity (EC), total dissolved solids (TDS), and heavy metals (Fe, Pb, Cr, Cd, Cu, Ni, Mn, and Zn) in leachates collected within the dumpsite and groundwater samples from residential wells close to the dumpsite. The pH of the leachate samples varied from 7.40 to 9.10, implying alkaline behavior and the methanogenic phase of solid waste deposits. The levels of EC, TDS, and heavy metals (Fe, Pb, Cr, Cu, Ni, Mn, and Zn) in leachates were above the national and/or international standards. On other hand, groundwater samples presented pH values ranging from 7.15 to 7.60 which were within the World Health Organization acceptable limit. The concentrations of EC, TDS, Fe, Pb, Ni, Mn, and Zn in most groundwater samples exceeded the national and/or international permissible limits for drinking water. In addition, the water quality indices (WQI) of groundwater samples ranged between 8.30 and 17.90, which implied the excellent quality of groundwater sources. However, the presence of high levels of heavy metals above the permissible limits in both leachate and groundwater samples signified potential risks to the environment and public health. Therefore, the present study calls for proper management of municipal solid waste to reduce the potential risks of further contamination on the groundwater resources and environment around the Iringa municipal dumpsite.

Spatial-Temporal Analysis of Physicochemical Parameters of Three Ethiopian Rift Valley Lakes Indicating Threats in Ecological Sustainability

The Ethiopian Rift Valley lakes provide substantial economic, environmental and social benefits across diverse ecological settings. Sustainability of these benefits is affected substantially by the mega-environmental level climate change and cumulative anthropogenic effects at the lakes and in their catchments landscapes. To provide an insight on some of the challenges that affect the lakes' health, this study assessed major water physicochemical status of three Rift Valley lakes: namely, Chamo, Koka and Ziway and compared with previous data. The water physicochemical data were measured in-situ for two years, i.e., from May 2018 to April 2020. Nutrients loading to the lakes were analyzed from water samples. The study demonstrated that water temperature, pH, electric conductivity (EC), total dissolved solids (TDS), salinity and total phosphorus (TP) varied significantly between seasons within and between the lakes. The findings demonstrated that the EC and TDS levels during the period of this study were higher than previous reported levels. The findings also showed that establishment and invasion of water hyacinth ( Eichhornia crassipes ) weed had association with nutrient loading into the lakes and vegetation in the lake's shore. The very likely anthropogenic effects associated factors including water turbidity, soluble reactive phosphorus, and nitrate-N concentrations varied among the lakes, across seasons and time. Our findings indicate that the urgent need of education and participatory intervention of watershed management, proper agricultural practices, strict and enforced municipal and industrial waste management practices, protection of wetlands vegetation and delimitation of the lakes' buffer zones to sustain the services of the lakes. Keywords : Chamo, Koka, nutrient pollution; water hyacinth, Ziway DOI: 10.7176/JEES/12-9-02 Publication date: September 30 th 2022