Calcination-modified zeolite filtration and UV disinfection for contaminant Mitigation in groundwater
Meiramkulova K. Kydyrbekova A. Mkilima T. Bazarbayeva T. Sholpan U. Zarbaliyev M. Uryumtseva T. Kurbanova L. Tussupova B. Zhumagulov M.
December 2024Elsevier Ltd
Case Studies in Chemical and Environmental Engineering
2024#10
Access to safe drinking water is a pressing global concern, necessitating innovative purification methods. This study investigated the efficacy of combining calcination-modified zeolite filtration with ultraviolet (UV) disinfection to mitigate microbial contamination in raw groundwater. A comparison was made between the treatment system employing calcination-modified natural zeolite and the system utilizing natural zeolite without modification. Results from isotherm and kinetic modeling revealed enhanced adsorption behavior and mechanisms in modified zeolite compared to its natural counterpart, leading to improved adsorption capacity and kinetics. Enhancements in removal efficiencies were observed for contaminants such as zinc, cadmium, and manganese, with increases from 30.25 % to 67.5 %, 55.75 %–82.75 %, and 64.04 %–69.52 %, respectively. Similarly, enhanced removal efficiencies for organic contaminants like phenol and cyanides were noted, rising from 59.99 % to 73.26 % and 59.22 %–65.05 %, respectively, with the modified zeolite. Furthermore, filtration with both natural and modified zeolites coupled with UV disinfection substantially reduced microbial contamination levels in raw groundwater, with total coliforms decreasing from 2245 CFU/mL to 8 CFU/mL post-filtration and UV treatment. Notably, surface area increased from 60 m2/g to 220 m2/g, and pore volume increased from 0.15 cm³/g to 0.8 cm³/g for modified zeolite. These findings underscore the potent antimicrobial efficacy and improved adsorption performance of the combined approach, contributing to advancing water purification technologies and addressing critical global health challenges.
Contaminant removal , Groundwater quality , Sustainability , Ultraviolet treatment , Water treatment , Zeolite modification
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Research Institute of Environment and Water Management, L.N. Gumilyov Eurasian National University, Satpayev Street 2, Astana, 010000, Kazakhstan
Department of Environmental Engineering and Management, The University of Dodoma, P.O. Box 259, Dodoma, Tanzania
Department of the UNESCO Chair for Sustainable Development, Al–Farabi Kazakh National University, Al–Farabi 71, Almaty, 050040, Kazakhstan
Department Water and Land Management, Korkyt Ata Kyzylorda University, Aiteke Bi street 29 A, Kyzylorda, 120014, Kazakhstan
Department “Reclamation and Water Management Construction “Azerbaijan University of Architecture and Construction, Baku A.Sultanova Street 11, AZ, 1073, Azerbaijan
Department of Veterinary Medicine and Industrial Technologies, LLP Innovative University of Eurasia, Lomov str.45, Pavlodar, 140000, Kazakhstan
Department of Thermal Engineering, L.N. Gumilyov Eurasian National University, Satpayev Street 2, Astana, 010000, Kazakhstan
Research Institute of Environment and Water Management
Department of Environmental Engineering and Management
Department of the UNESCO Chair for Sustainable Development
Department Water and Land Management
Department “Reclamation and Water Management Construction “Azerbaijan University of Architecture and Construction
Department of Veterinary Medicine and Industrial Technologies
Department of Thermal Engineering
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