Dynamic characteristics comparison between non-spherical hydrodynamic cavitation bubbles and spark-induced cavitation bubbles.

Smart nanostructured electrodes integrated with microbial fuel cells for wastewater-to-energy conversion and on-site detection of antibiotic in real wastewater.

Revisiting steel slag as a modified catalyst in advanced oxidation processes for the degradation of emerging pollutants in water: A review.

Carbonate aquifer promoting a diverse and carbon-active aquatic habitats in a subtropical river system.

AI-assisted surface water dynamics analysis in the Indochina Peninsula integrating Landsat-8 and Sentinel-2 imagery

Development of microbial source tracking markers for detection of human-associated Clostridium perfringens.

Optimization of Hazardous Malachite Green Dye Removal Process Using Double Derivatized Guar Gum Polymer: A Fractional Factorial L9 Approach

Lignocellulolytic fungi to tailor hydrophobic microstructures of biochar for efficient and selective removal of diverse emerging contaminants.

Releasing dye-contaminated textile wastewater into water bodies without proper treatment has adverse effects on the environment and poses serious health risks to living beings. Amaranth is one of the widely used textile red azo dyes in Sri Lanka, and it is discharged improperly because traditional water treatment methods often fall short of effectively removing the dyes due their diverse and persistent nature. Electrocoagulation (EC) provides a promising alternative. Although EC has been widely investigated, no studies has examined the application of carbon-based materials as electrodes. This study aimed to evaluate the application of a carbon felt cathode combined with an aluminium anode for removing the Amaranth azo dye from synthetic textile wastewater. The effect of initial pH, applied potential, stirring speed, and electrolysis time on EC performance were studied to identify the optimal condition, and the results revealed 100% efficiency to remove 20 mg/L dye solution in 30 minutes of electrolysis at 6.4 V, pH 2, and 1000 rpm without any additional electrolytes. The study confirmed successful application of carbon felt as a cathode material and highlights that pH is a crucial factor in generating the types of coagulant species, and the system is self-pH neutralizing with treatment time.

Holistic assessment of India's water security using coupled climate-human intervention models.

Qualitative discrimination of common phenolic disinfectants by sensor array based on nanozymes for facile environmental sensing.

Climate change, alongside human activities, poses significant challenges to the management of water bodies. Both flooding and stream drying are pressing concerns, with climate change expected to increase the likelihood of these phenomena in the future. This paper employs a discrete choice experiment (CE) to investigate public preferences for a hypothetical management programme designed to adapt to the effects of climate change and to improve the ecological condition of streams within the River Lepsämänjoki catchment in Southern Finland. The CE scenarios are described using six attributes: flood effects, drying effects, water quality, biodiversity, accessibility to recreational areas, and a management fee. In addition, this paper explores the implicit psychological connection that residents form between themselves and rivers or streams within a catchment area. The results suggest that most individuals are in favour of implementing a new water management programme to mitigate local environmental impacts. On average, individuals value flood and drought mitigation, as well as improvements in water quality and biodiversity. However, they appear indifferent to improvements in accessibility to stream sites. The empirical results also reveal that a sense of connectedness with nature is positively associated with the valuation of enhancements in the local stream environment. • Choice experiment with catchment residents to assess stream-related preferences. • Residents expressed stronger support for mitigating flood over drought impacts. • Validity of the Inclusion of Nature in Self (INS) measure was tested. • Nature connectedness functions as an explanatory variable in choice models. • New primary valuation studies are needed on stream drying in catchments.

Societal impact of reducing nutrient losses from agricultural fields in the Lower Mississippi River Basin: A case study of the Beasley Lake Watershed

Modeling the in-water concentrations of ammonia if spilled into coastal and marine waters.

Comprehensive sub-chronic toxicological profiling of illegal artisanal small-scale mining-polluted river bodies in four regions of Ghana.

Land-use change and surface warming in Uganda’s oil-rich Albertine region (1995–2025): A geodetector analysis

Molecular interaction of pristine and photoaged polylactic acid microplastics with extracellular polymeric substances from Microcystisaeruginosa.

Resource utilization and microbial community evolution in anaerobic digestion effluent containing heavy metal Zn via eco-remediation technology based on a PBR algal-bacterial symbiosis system.

High volumes of untreated wastewater are discharged into various water bodies worldwide, leading to the distortion and deterioration of the aquatic environment. The use of untreated wastewater to irrigate food crops often results in food poisoning-related deaths due to high levels of pollutants, including heavy metals. Herein, bimetallic oxides (Ag 2 O/ZnO) were incorporated on the surface of multiwall carbon nanotubes (MWCNTs) by wet impregnation at different mixing ratios to design Ag 2 O/ZnO/MWCNTs nanocomposites (AZM X ), which were used for the removal of Cr, Pb and Zn ions from irrigation water. The synthesized nanocomposites were characterized by BET, XRD, TEM, and SEM/EDS to confirm the successful incorporation of Ag 2 O/ZnO on the surface of MWCNTs. The characterization results confirmed the formation of highly crystalline materials with enhanced surface area, which can be attributed to the improved dispersion and interfacial interaction between Ag₂O/ZnO and MWCNTs. This synergistic effect increases the effective surface area regardless of the mixing ratios relative to individual nanoparticles. Among the tested heavy metals, Pb showed the highest removal efficiency (98.62%) using the AZM 2:1:1 nanocomposite under optimum conditions of dosage (0.8 g) and contact time (25 min). The adsorption data fitted well with the Langmuir isotherm model, suggesting that the heavy metals adsorbed to the surface of AZM X in a monolayer fashion. The adsorption kinetics revealed that the adsorption process was better explained by pseudo-second-order kinetics. Thermodynamic studies demonstrated that the metal ion adsorption by AZM X was spontaneous, feasible, and endothermic. The desorption study revealed that hydrochloric acid was the most effective desorbing agent. The AZM 2:1:1 nanocomposite maintains more than 90% removal rate of Pb after five regeneration cycles. This study suggested that the developed novel bimetallic oxides–MWCNTs nanocomposites are capable of efficiently removing metal ions from aqueous environments. • A novel AZMx composites was designed for effective metal ions removal. • Characterization confirmed successful incorporation of Ag 2 O/ZnO on MWCNTs surface. • Adsorption followed pseudo-second-order kinetics and Langmuir isotherm. • Thermodynamic analysis showed the process is endothermic and spontaneous. • AZM2:1:1 showed better adsorption performance toward Cr(VI), Pb(II), and Zn(II). • The AZM2:1:1 retained 90% of Pb removal even after 5 reuse cycles.

Bisphenols are widespread in the environment and can cause harm to aquatic and terrestrial life by acting as an endocrine disruptor, affecting reproduction, growth, and development. Hydrodynamic cavitation and photocatalysis can both be used to remove bisphenols from aquatic bodies, yet the reports on the combination of the two in a single system are scarce. Herein, we studied the removal of five bisphenols from tap water (TW) and real wastewater (WW) effluent at two environmentally relevant concentration levels, 200ng/L and 1000ng/L, by means of hydrodynamic cavitation, both independently and in combination with photocatalysis, using a TiO2-SiO2 composite catalyst immobilized on Al2O3 monoliths. For tap water, inside the short treatment times (15min or 30min) the efficiency of removal reached up to 100% for tetramethyl bisphenol F (TMBPF) while only 15% for bisphenol S (BPS). Interestingly, the average total amount of BPAs removed across all treatment combinations was almost the same in case of TW (58.5ng) and WW (60.4ng). The current study shows an important advancement in the practical applicability of the two methods for treating polluted water bodies which is applicable to the upcoming implementation of the quaternary treatment in WW treatment plants.