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Biopolishing of Domestic Wastewater Using Polyvinyl Alcohol – Supported Biofilm of Bacterial Strain Bacillus velezensis Isolate JB7
 
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1
Department of Chemical Engineering and Process, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia
 
2
Research Centre for Sustainable Process Technology (CESPRO), Universiti Sains Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia
 
3
Department of Chemical Engineering, College of Engineering and Petroleum, Hadhramout University, Mukalla, Hadhramout, Yemen
 
 
Corresponding author
Hassimi Abu Hasan   

Department of Chemical Engineering and Process, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia
 
 
J. Ecol. Eng. 2023; 24(8):33-42
 
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ABSTRACT
Water pollution occurs due to the discharge of domestic waste mixed with residential, industrial, commercial, and agricultural wastewater. Conventional water treatment methods using aerobic/anaerobic methods can cause problems with the production of high green gases and result in the greenhouse effect. Microbial-based domestic sewage treatment technology using polyvinyl alcohol biofilm supporting media was introduced as an alternative measure to overcome this problem. The objective of the study was to determine the performance of polyvinyl alcohol beads in polishing domestic wastewater. In this study, the bacterium Bacillus velezensis isolate JB7 was used together with PVA as a raw material to treat domestic sewage wastewater more efficiently and stably. The results of the study show the effectiveness of domestic wastewater treatment in several factors such as pH value, chemical oxygen demand (COD), phosphorus, nitrate, nitrite, ammonia, and total suspended solids. In conclusion, domestic wastewater treatment methods using polyvinyl alcohol beads are seen to be effective, reducing the use of sewage waste plant construction sites and able to avoid the use of non-recyclable materials such as plastics and synthetics.
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