Concentration Of Aluminum Sulfate Research Articles

How do different concentrations of aluminum and zinc affect the survival, body size, morphology and immune system of Physalaemus cuvieri (Fitzinger, 1826) tadpole?

ABSTRACT The assessment of amphibian responses as bioindicators of exposure to chemical pollutants is an important tool for conservation of native species. This study aimed to investigate the effects of chronic aluminum (Al) and zinc (Zn) exposure on survival, body size, morphology (malformations), and immune system (leukocyte profile) in P. cuvieri tadpoles. Ecotoxicological analyses were performed utilizing chronic toxicity tests in which 210 tadpoles at the 25th Gosner developmental stage were exposed to Al and Zn. Individuals of P. cuvieri were maintained in glass containers containing various concentrations of aluminum sulfate (0.1, 0.2, or 0.3 mg/L) and zinc sulfate (0.18, 0.27 or 0.35 mg/L), and tests were performed in triplicate. After 14 days, amphibians were weighed, measured and survival rate, malformations in the oral and intestine apparatus, leukocyte profile, and ratio between neutrophils and lymphocytes determined. The differing concentrations of Al and Zn did not produce lethality in P. cuvieri where 95% of the animals survived 326 hr following metal exposure. Individuals exposed to Zn achieved greater body growth and weight gain compared to controls. Aluminum increased weight gain compared controls. These metals also produced malformations of the oral and intestine apparatus and enhanced occurrence of hemorrhages, especially at the highest doses. Lymphocytes were the predominant cells among leukocytes, with lymphopenia and neutrophilia observed following Al and Zn treatment, as evidenced by elevated neutrophil/lymphocyte ratio, an important indicator of stress in animals. Data suggest that further studies need to be carried out, even with metal concentrations higher than those prescribed by CONAMA, to ensure the conservation of this species.

Germination and seed vigor of Phaseolus vulgaris submitted to treatments whit aluminum sulfate

The varieties creole are traditionally grown plant, adapted in places where the crops are developed and present in seeds banks of many famers. Thus the objective of this study was to investigate the performance of the germination process and possible toxic effects. Were used seeds of creole cultivars of beans (Phaseolus vulgaris L.), using different concentrations of aluminum. We used a randomized completely design with four repetitions of 25 seeds and the treatments were distributed in 4 x 5 factorial scheme, consisting of four bean cultivars (Carioca, Butter, Black, Red) and five concentrations (0.0, 2.5, 5.0, 7.5, and 10.0 mg L-1) of aluminum sulfate. The characteristics analyzed were percentage of germination, percentage of abnormal seedlings, germination speed index, root length, length of the base of the seedling to the hypocotyl, hypocotyl length of seedlings to the epicotyl, root dry mass and shoot dry mass. The variables germination percentage and germination speed index were not affected by the toxic effect of aluminum. The variables percentage of abnormal seedlings, root length and shoot showed a significant reduction with the increase in aluminum sulfate concentrations, thus showing a greater correlation between them.
 Keywords: Aluminum; Fabaceae; Physiological quality; Toxicity

Наднормативні концентрації хлороформу та сульфату алюмінію у питній воді та їхній вплив на метаболічні процеси в організмі лабораторних тварини

Objective: determination of the nature and features of changes in biochemical indicators in the blood of animals under conditions of chronic exposure to different concentrations of chloroform and aluminum sulfate in drinking water in an isolated and combined state to substantiate the criteria for hygienic evaluation of their adverse effects on the body. Materials and methods: combined effect of chloroform and aluminum sulfate on biochemical indicators. Results: According to the results of biochemical studies, it should be noted that the most pronounced changes were observed in groups of animals that were exposed to CLF and Al in isolation at the level of 3 MPC and 5 MPC, and in groups of animals with combined exposure to the specified substances - CLF + Al at the level of 3 MPC аnd 5 MPC. A decrease in the content of AsT and an increase in the level of AlT in the above experimental groups of animals may indicate functional disorders of the liver, especially its enzymatic function. The indicated changes in the content of glucose and amylase in the blood as indicators of carbohydrate volume may indicate the activation of the processes of glycogenesis and glycolysis in the animal body, which may lead to functional disorders of the pancreas. Іt was established that the nature and severity of the effects depended on the nature of the influence of the studied factors (isolated or combined action), their MPC levels, and the time of exposure. Conclusions. The nature and features of changes in biochemical indicators in the body of experimental animals during a six-month chronic sanitary-toxicological experiment with isolated and combined effects of chloroform and aluminum sulfate in drinking water may indicate metabolic disorders in organs and changes in the intensity of regenerative processes at the cellular level in response to the adverse effects of toxicants. Such a tendency to imbalance indicators can be a kind of indicator of metabolic compensatory changes in the body under the influence of a complex of factors, depending on the current level and duration of action.

A novel approach for harvesting the microalgae Chlorella vulgaris with sodium alginate microspheres using buoy-bead flotation method

In order to reduce the residue of buoy-beads and solve the problem of pollution caused by high flocculant consumption, SAMs11SAMs: sodium alginate microspheres(sodium alginate microspheres) with sodium alginate were used as the raw material to harvest microalgae for the first time. In addition, during the manufacturing of SAMs, the re-frying oil was used as the dispersion system, which not only reduced the cost, but also provided new ideas for the treatment of re-frying oil. Response surface methodology was used to explore the influence of different factors and the interaction of variables, and the harvesting process was optimized using the multi-objective optimization. Based upon the calculation of XDLVO (extended Derjaguin-Laudau-Verwey-Overbeek) theory and the characterization of Fourier Transform Infrared Spectroscopy, the harvesting mechanism of buoy-bead flotation method was clarified. The results showed that the combination of SAMs and a small amount of aluminum sulfate could replace air flotation and traditional buoy-bead flotation with solid particles as buoy-beads to harvest C. vulgaris (Chlorella vulgaris). For the multi-objective optimization with harvesting efficiency as the priority, the predicted pH, the concentrations of aluminum sulfate and buoy-beads and the dilution factor had values of 8.25, 56.09 mg/L, 17.46 mL/L, and 2.15, respectively. In the validation experiment, the harvesting efficiency and the enrichment ratio of C. vulgaris could reach the values of 97.51 % and 1.97 %, respectively. For the validation experiment of reverse optimization with focusing on enrichment ratio, the harvesting efficiency and the enrichment ratio of C. vulgaris had the values of 93.78 % and 2.65 %, respectively. The essence of improving the harvesting mechanism was the combination of carboxyl and hydroxyl groups between C. vulgaris and SAMs and the adsorption of positive ions by specific proteins on the surface of C. vulgaris to reduce electrostatic repulsion.

Aluminum sulfate inhibits green mold by inducing chitinase activity of Penicillium digitatum and enzyme activity of citrus fruit

Aluminum sulfate (AlS), a common food additive, was evaluated for the inhibitory mechanisms that control citrus green mold. In vitro antifungal activity of AlS against P. digitatum was assayed on potato dextrose agar (PDA) Petri dishes with AlS concentrations of 0.38, 0.75, 1.5, 3, 6 mmol/L (mM) after 2 d and 4 d of incubation at 25 °C. The minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) of AlS were 1.5 and 3 mM, respectively. The analysis of calcium fluoride white (CFW) fluorescence staining and chitinase activity showed that AlS could increase the chitinase activity and enhance the damage to the cell wall. In vivo, citrus was dipped in 0.75 mM (1/2 MIC) AlS solution for 60 s and then inoculated in wounds with P. digitatum. After 6 d of storage, AlS significantly reduces the incidence and severity of the disease. In addition, citrus enzyme activity was assayed with an enzyme activity kit, the results showed that AlS treatment increased the activity of defense-related enzymes to protect the wound from infection compared with the control group (water). Our study revealed that AlS might be a potent preservative and antistaling agent against the postharvest green mold of citrus.

Harvesting of Chlorella sorokiniana BR001 cultivated in a low-nitrogen medium using different techniques

ABSTRACT: The harvesting process is a current challenge for the commercial production of microalgae because the biomass is diluted in the culture medium. Several methods have been proposed to harvest microalgae cells, but there is not a consensus about the optimum method for such application. Herein, the methods based on sedimentation, flocculation, and centrifugation were evaluated on the recovery of Chlorella sorokiniana BR001 cultivated in a low-nitrogen medium. C. sorokiniana BR001 was cultivated using a low-nitrogen medium to trigger the accumulation of neutral lipids and neutral carbohydrates. The biomass of C. sorokiniana BR001 cultivated in a low-nitrogen medium showed a total lipid content of 1.9 times higher (23.8 ± 4.5%) when compared to the biomass produced in a high-nitrogen medium (12.3 ± 1.2%). In addition, the biomass of the BR001 strain cultivated in a low-nitrogen medium showed a high content of neutral carbohydrates (52.1 ± 1.5%). The natural sedimentation-based process was evaluated using a sedimentation column, and it was concluded that C. sorokiniana BR001 is a non-flocculent strain. Therefore, it was evaluated the effect of different concentrations of ferric sulfate (0.005 to 1 g L-1) or aluminum sulfate (0.025 to 0.83 g L-1) on the flocculation process of C. sorokiniana BR001, but high doses of flocculant agents were required for an efficient harvest of biomass. It was evaluated the centrifugation at low speed (300 to 3,000 g) as well, and it was possible to conclude that this process was the most adequate to harvest the non-flocculent strain C. sorokiniana BR001.

Evaluation of Natural and Chemical Coagulants Performance in Treatment of Municipal Wastewater of Behshahr City

Municipal wastewater is one of the largest volumes of wastewater which contains various organic compounds from proteins and fats to carbohydrates and nucleic acids. Municipal wastewater of Behshahr city (Mazandaran, Iran) was evaluated using aluminum sulfate and iron chloride as chemical coagulants and pectin and sodium alginate as natural ones. Biological oxygen demand was investigated at different temperatures and coagulant concentrations. The fraction of full factorial statistical method and Qualitek-4 software were applied for designing experiments and analyzing the results to determine the optimal conditions for achieving the highest reduction in wastewater organic load and biological oxygen demand. In the case of biological oxygen demand, the optimal condition was achieved at 25°C, using 1, 0.02, 1.5 and 1 g/L of aluminum sulfate, sodium alginate, iron chloride and pectin, respectively. Under the optimal condition, the percentage of biological oxygen demand reduction was equal to 34.5%. Maximum BOD removal of 40.9% was obtained at 25°C using aluminum sulfate, sodium alginate, iron chloride, and pectin at concentrations of 0.6, 0.02, 1.5, and 6 g/L, respectively. The contribution of aluminum sulfate, sodium alginate, iron chloride, and pectin concentration in biological oxygen demand removal of the studied wastewater was 3.8%, 22.4%, 16.3%, and 14.4%, respectively. Coagulation temperature and aluminum sulfate concentration with approximately 42.7% and 3.8% contribution values were determined as the most and the least effective factors in biological oxygen demand reduction.

The study of TSS reduction in industrial wastewater by nano-coagulants

The main objective of this study is to investigate the effect of coagulants and nano-coagulants in different concentrations to reduce the TSS of industrial wastewater using the Taguchi statistical method. Two chemicals, iron chloride and aluminum sulfate, and two nanoparticles of iron oxide and alumina, were used as coagulants within the wastewater flocculation process at Beshel industrial complex. A L16 orthogonal array with the four factors of control at four levels each and two interactions was employed for optimization of coagulants and nano-coagulants concentration to reduce total suspended solids (TSS) in industrial wastewater. The concentration of iron chloride 1.5 g/l, concentration of iron oxide nanoparticles 1.5 g/l, concentration of aluminum sulfate 1.5 g/l and concentration of alumina nanoparticles 1.5 g/l was the optimal conditions to reduce the TSS of industrial wastewater.

Effects of aluminum sulfate soaking pretreatment on dimensional stability and thermostability of heat-treated wood

Acidic aluminum sulfate hydrolysis solutions can be used to catalyze the thermal degradation of wood in a mild temperature environment, and thus reduce the temperature required for heat treatment process. To improve the dimensional and thermal stability of Chinese fir during heat treatment at 120 °C, 140 °C and 160 °C, this study investigated the effects of soaking pretreatment with 5%, 10% and 15% aluminum sulfate on the chemical and structural changes of the heat-treated Chinese fir. The results indicated that the samples treated at 15% aluminum sulfate concentration and 160 °C heat treatment achieved the best dimensional and thermal stability. Chemical analyses by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) indicated that the catalysis of aluminum sulfate resulted in degradation of hemicelluloses during the heat treatment, and an increase in the soaking concentration and heat treatment temperature also affected the thermal degradation of celluloses. The scanning electron microscope (SEM) and mass changes test results proved that the hydrolyzed aluminum flocs mainly adhered to the inner wall of the wood tracheid as spherical precipitates, and when the soaking concentration reached 10% and 15%, a uniform soaking effect could be achieved. The thermogravimetric (TG) analysis revealed the soaking pretreatment effectively improved the thermal stability of the heat-treated wood by physically wrapping and promoting the formation of a carbon layer on the wood surface during heat treatment. Thus, aluminum sulfate soaking pretreatment exerted a great effect on the dimensional and thermal stability of wood, allowing heat treatment to be performed at a lower temperature.

Análise da influência do alumínio e magnésio nos processos fermentativos de resíduos hidrolisados da bananeira para produção de etanol

Os diferentes processos para a produção de etanol possuem grande variação de custo de produção. Desta forma, a matéria-prima utilizada e o meio fermentativo constituem um forte fator no rendimento produtivo. Nesse contexto, o presente trabalho teve como objetivo avaliar a produtividade de etanol de resíduos lignocelulósicos hidrolisados da bananeira, submetidos à adição de diferentes concentrações de magnésio e alumínio no mosto fermentativo. Neste experimento, foram utilizados o pseudocaule (PC) e a massa foliar da bananeira (MF). Os resíduos foram submetidos a um pré-tratamento intercalado entre ataque ácido e básico e, logo após, foi realizada a hidrólise enzimática da fração sólida. O experimento fermentativo foi composto por 2 concentrações de sulfato de alumínio (0, 50, 100 mg.L-1) e 3 concentrações de óxido de magnésio (0, 1, 2 e 3 mg.L-1), adicionados em 10 ml do mosto hidrolisado. O delineamento foi inteiramente casualizado com 3 repetições. Os diferentes resíduos estudados (PC e MF) obtiveram altos teores de glicose (73,24 e 79,75 g.L-1 respectivamente), demonstrando o potencial desses materiais para a produção de etanol. Já na fermentação, houve diferenças significativas na adição de magnésio e alumínio, mostrando que o magnésio tem capacidade de elevar a produção de etanol em até 24% e que o alumínio pode gerar uma redução de 10% na produção. Entretanto, não houve diferenças significativas na interação entre os minerais, o que significa que o magnésio não conseguiu suprimir o efeito tóxico causado pelo alumínio.

Ag nanoparticles decorated ZnO: Al nanoneedles as a high-performance surface-enhanced Raman scattering substrate

This present study used a simple aqueous chemical growth method to synthesize Al-doped ZnO (ZnO: Al) nanoneedles on ZnO seeds/glass substrates. The surface morphology and length of ZnO: Al nanostructures can suitably control by the concentration of aluminum sulfate. The surface-enhanced Raman scattering (SERS) effect of Ag sputtering durations on the ZnO: Al nanoneedles and the concentration of aluminum sulfate on the ZnO: Al/Ag heterostructures systematically investigated. The ZnO: Al/Ag heterostructures (2 mM aluminum sulfate and 60 s sputtering time) exhibited a more substantial enhancement, a lower detection limit (10−10 M), excellent uniformity, high reusability and stability for the SERS detection of rhodamine 6G molecule. The ZnO: Al/Ag heterostructures can also use to detect the lower concentration of melamine (10−9 M) and 5-fluorouracil (10−7 M). ZnO: Al/Ag heterostructures can provide a low-cost and straightforward manufacturing method with high enhancement, low detection limit, excellent uniformity, and reusability for the SERS applications in areas of chemical and medicine.

Pre-coagulation assisted ultrafiltration membrane process for anaerobic effluent

Abstract Membranes can be used as alternative for post-treatment of upflow anaerobic sludge blanket (UASB) reactors. However, mainly for anaerobic effluent, fouling is still a challenge and major drawback can be minimized by coagulant addition before membrane filtration. In this work, three concentrations of aluminum sulfate (20, 150, and 950 mg L−1) were applied in UASB effluent to evaluate pollutant removal and fouling mitigation potential in two steps: coagulation/flocculation and crossflow filtration with ultrafiltration membrane. All coagulant dosages removed foulants (e.g. carbohydrates and proteins) before filtration and supernatants showed lower flux decrease in relation to UASB effluent, with an enhancement in reversible fouling fraction in comparison with total fouling resistance. Scanning Electron Microscopy and Energy Dispersive X-Ray Spectroscopy (SEM-EDX) analyses showed efficient coagulation and precipitation resulting in less residual aluminum in membrane surface for 950 mg L−1 coagulant dosage. All coagulants concentrations altered the cake layer, assisting crossflow filtration. Coagulation of UASB effluent before membrane filtration indicate an interesting alternative for post-treatment of anaerobic effluent.

Synthesis and Characterization of Chemically Cross-Linked CMC/Acrylamide Hydrogels

Carboxymethyl cellulose/poly(acrylamide) (CMC/Amm) hydrogels were synthesized by the chemical cross-linking method. Ammonium persulfate used as an initiator, while aluminium sulfate used as a cross-linking agent. The structure and morphology of the hydrogels were characterized by FTIR and scanning electron microscopy (SEM) analysis. The swelling behaviour of the hydrogels can be studied by using acids (CH3COOH, HCl and HClO4) and also in the pH of the buffer solutions at different temperature (room temperature, 30 and 37 ºC) was studied. Swelling of hydrogels increased with an increase in the concentration of aluminum sulfate up to 20 %, above 20 % it has found to be decreased. The effect of four series of cationic different concentrated salt solutions on the swelling had found to be the following order K+ > Na+ > Ca2+ > Mg2+.

OPTIMIZATION OF THE ALUMINUM SULFATE AND PAC (POLY ALUMINUM CHLORIDE) COAGULANT ON TELLO RIVER WATER TREATMENT

Abstract- Tello River water used by PT. PLN SULTANBATARA for sanitation and process water. One of the process's water is boiler feed water. River water has fluctuative characteristics depending on the season that occurs such as turbidity and Total Suspended Solid (TSS). The presence of TSS in boiler feed water needs to be minimized as it can decrease boiler performance in generating heat. The concentration of TSS in river water can be removed by coagulation and flocculation method with the addition of coagulant. Excessive coagulant distribution will increase the concentration of dissolved solids (TDS) of water. Thus, it is necessary to determine the optimum concentration of coagulant based on initial TSS concentration of river water. The objective of this research is to determine the optimum concentration of Aluminum Sulfate (Al2(SO4)3) and PAC (Poly Aluminum Chloride) Coagulant in reducing TSS water of Tello River. The sample used in this research is Tello river water which has an initial TSS concentration of 150 mg/L. The coagulant used was Aluminum Sulfate and PAC with several concentration variation of 5% - 40% to the initial TSS concentration of river water. Analysis of TSS content of samples using Gravimetry method. The optimum concentration of coagulant Aluminum Sulfate and PAC was 35% and 25% to the initial TSS concentration of river water where the final concentration of TSS obtained was 20 mg/L and 15.5 mg/L with percent TSS removal of 86.67% and 89.6 %. Keywords: Total Suspended Solid, Coagulation, Aluminium Sulfate, Poly Aluminium Chloride (PAC)

Cleaner alumina production from coal fly ash: Membrane electrolysis designed for sulfuric acid leachate

Abstract The clean and efficient extraction of alumina from coal fly ash renders environmental and economic benefits. The current study mainly aimed to develop a nonhazardous approach to conduct electrolysis with two-membrane and three-chamber cell for alumina extraction from coal fly ash. The influences of the aluminum sulfate concentration, distance between electrodes, current density, temperature and electrolysis duration were systematically explored. The results revealed that Al(OH)3 was a main electrolytic product with a yield of 64.48% and the energy consumption was 4.88 kWh/kg Al(OH)3 after 20 h of electrolysis process. The concentrations of ions were determined by inductively coupled plasma atomic emission spectrometry, indicating that Al3+ in the middle chamber migrated to the cathodic chamber to form Al(OH)3 precipitate under the combined action of direct current and the exchange membranes. The electrolysis mechanism was analyzed by cyclic voltammetry, which showed that H2O gained electrons and reacted with Al3+ on the cathode to form Al(OH)3 and H2. On the anode side, H2SO4 and O2 were generated due to the oxidation of H2O. Al(OH)3 is an alumina resource, H2 is a clean energy, and H2SO4 is a common coal fly ash leaching agent and can be returned to the leaching process to promote zero pollution discharge. The solution in the middle chamber can be refreshed to attain continuous electrolysis. The proposed electrolysis process provides an efficient and environmentally friendly approach for the extraction of high-quality Al(OH)3 from coal fly ash.

Preparation of highly dispersive solid microspherical α-Al2O3 powder with a hydrophobic surface for stereolithography-based 3D printing technology

The present research demonstrates the feasibility of the preparation of a highly dispersive, solid microspherical α-Al2O3 powder with a hydrophobic surface using a simple, rapid, and low-cost method for stereolithography-based 3D printing technology, including the synthesis of a precursor based on the in situ hydrothermal reaction of aluminum sulfate and urea, heat treatment, and surface modification using sodium oleate. The dependence of the morphologies of the precursors and α-Al2O3 powders on the type of aluminum salt, reaction time, and temperature was studied. The formation conditions of the solid spherical structure were explored. The results indicate that the formation of a solid spherical structure strongly depends on the type of aluminum salt, reaction time, and temperature. A spherical structure is only obtained by mixing aluminum sulfate with urea. Very high reaction times and temperatures facilitate the transformation of the microstructure from a solid sphere to a hollow sphere. The optimum hydrothermal reaction conditions are as follows: aluminum sulfate concentration of 0.05 mol/L, urea concentration of 0.2 mol/L, reaction temperature of 120 °C, and reaction time of 2 h. The optimum surface modification is obtained by using 3 wt% of sodium oleate, which can be used for the preparation of a 50 vol% α-Al2O3 ceramic UV-curable suspension with a viscosity of 1.66 Pa s at 30 s-1. An alumina part with a sintering density of 95.5% was fabricated using stereolithography-based 3D printing technology. The analysis of the formation mechanism of the solid spherical structure indicates that the high decomposition temperature of urea, homogeneous dissolution of urea in aluminium sulfate solution, slow OH- release by urea in the hydrothermal system, and strong coordination ability of SO42− effectively restrain the hydrolysis of Al3+ and facilitate the formation of the solid spherical precursor Al4(OH)10SO4. The solid microspherical α-Al2O3 powder is prepared by heat treatment of the precursor.

Leaching ion adsorption rare earth by aluminum sulfate for increasing efficiency and lowering the environmental impact

The leaching efficiency (LE) of ion adsorption rare earth (IARE) by the sulfate and chloride of ammonium, magnesium and aluminum were comparatively determined using column leaching method. It is found that at equal equivalent concentration of cation, the LE of IARE by aluminum sulfate is the highest, and the zeta potential of clay mineral particles in the tailing is near to zero, which means a lower risk of landslide and pollutant emission. Furthermore, the optimum concentration of aluminum sulfate is determined to be 0.02 mol/L, which is much lower than that of ammonium sulfate and magnesium sulfate. To reduce the production cost and environmental impact, we proposed a multi-stage leaching process, which was firstly leaching with ammonium sulfate and then with aluminum sulfate, following by water washing and lime neutralizing. With the ratio of ammonium sulfate to aluminum sulfate varying from 1:0 to 0.5:0.5, the residual ammonium in tailing decreases from 11.2% to 0.6%, however, the LE of RE shows an optimum value at 0.8:0.2. By neutralizing the pH of tailing with lime water to over 6, the ion concentration in water rinsing solution can meet the requirement for water discharge. At the same time, the zeta potential of clay particles is found to be around −5 mV, means a relatively lower risk of landslide. These facts indicate that the LE of IARE can be increased and the danger caused by tailings landslides and pollutant emissions can be reduced by replacing ammonium sulfate with aluminum sulfate as leaching reagent.

OPTIMIZATION OF THE ALUMINUM SULFATE AND PAC (POLY ALUMINUM CHLORIDE) COAGULANT ON TELLO RIVER WATER TREATMENT

Abstract- Tello River water used by PT. PLN SULTANBATARA for sanitation and process water. One of the process's water is boiler feed water. River water has fluctuative characteristics depending on the season that occurs such as turbidity and Total Suspended Solid (TSS). The presence of TSS in boiler feed water needs to be minimized as it can decrease boiler performance in generating heat. The concentration of TSS in river water can be removed by coagulation and flocculation method with the addition of coagulant. Excessive coagulant distribution will increase the concentration of dissolved solids (TDS) of water. Thus, it is necessary to determine the optimum concentration of coagulant based on initial TSS concentration of river water. The objective of this research is to determine the optimum concentration of Aluminum Sulfate (Al2(SO4)3) and PAC (Poly Aluminum Chloride) Coagulant in reducing TSS water of Tello River. The sample used in this research is Tello river water which has an initial TSS concentration of 150 mg/L. The coagulant used was Aluminum Sulfate and PAC with several concentration variation of 5% - 40% to the initial TSS concentration of river water. Analysis of TSS content of samples using Gravimetry method. The optimum concentration of coagulant Aluminum Sulfate and PAC was 35% and 25% to the initial TSS concentration of river water where the final concentration of TSS obtained was 20 mg/L and 15.5 mg/L with percent TSS removal of 86.67% and 89.6 %. Keywords: Total Suspended Solid, Coagulation, Aluminium Sulfate, Poly Aluminium Chloride (PAC)

OPTIMIZATION OF THE ALUMINUM SULFATE AND PAC (POLY ALUMINUM CHLORIDE) COAGULANT ON TELLO RIVER WATER TREATMENT

- Tello River water used by PT. PLN SULTANBATARA for sanitation and process water. One of the process's water is boiler feed water. River water has fluctuative characteristics depending on the season that occurs such as turbidity and Total Suspended Solid (TSS). The presence of TSS in boiler feed water needs to be minimized as it can decrease boiler performance in generating heat. The concentration of TSS in river water can be removed by coagulation and flocculation method with the addition of coagulant. Excessive coagulant distribution will increase the concentration of dissolved solids (TDS) of water. Thus, it is necessary to determine the optimum concentration of coagulant based on initial TSS concentration of river water. The objective of this research is to determine the optimum concentration of Aluminum Sulfate (Al 2 (SO 4 ) 3 ) and PAC (Poly Aluminum Chloride) Coagulant in reducing TSS water of Tello River. The sample used in this research is Tello river water which has an initial TSS concentration of 150 mg/L. The coagulant used was Aluminum Sulfate and PAC with several concentration variation of 5% - 40% to the initial TSS concentration of river water. Analysis of TSS content of samples using Gravimetry method. The optimum concentration of coagulant Aluminum Sulfate and PAC was 35% and 25% to the initial TSS concentration of river water where the final concentration of TSS obtained was 20 mg/L and 15.5 mg/L with percent TSS removal of 86.67% and 89.6 %. Keywords: Total Suspended Solid, Coagulation, Aluminium Sulfate, Poly Aluminium Chloride (PAC)

Effects of an Aluminum Sulfate and Ferric Chloride Blend on Poultry Litter Characteristics in Vitro

Previous studies have applied various concentrations of aluminum sulfate and ferric chloride separately to poultry litter to reduce environmental pollution and increase chicken productivity. In the present study, we investigated the effect of using a blend of these 2 chemicals under 5 different treatments: control (no addition), 50 + 50, 25 + 50, 50 + 25, and 25 + 25 g/kg of litter, which consisted of fresh chicken manure (1 kg) and sawdust (4 kg) thoroughly mixed in a 70 × 47 × 43 cm box. NH3 and CO2 volatilizations, pH, electrical conductivity (EC) and moisture content of the poultry litter were assessed weekly up to 6 wk and in the case of total and water-soluble nutrients they were assessed after 1 and 42 d. The control treatment had higher NH3 and CO2 volatilizations than the treated litter throughout the experiment. EC and pH showed an inverse relationship, whereby the control treatment had high pH and low EC values and the treated litter had low pH and high EC values. After 42 d, nitrogen levels were significantly reduced in the control treatment, whereas the 50 + 50 g/kg treatment had the highest content. Conversely, water-soluble phosphorus levels were much lower in the treated poultry litter after 1 and 42 d. A higher ferric chloride concentration (25 + 50 g/kg) in the blend was more effective than a higher aluminum sulfate concentration (50 + 25 g/kg). These findings demonstrate that a combination of aluminum sulfate and ferric chloride may be a useful amendment for reducing NH3 and CO2 volatilizations, pH, and moisture content of poultry litter, which will help in improving poultry productivity, pollution control, and poultry litter fertilizer usage.