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Published on: January 22, 2015
Electrocatalytic coupled biofilter for treating cyclohexanone-containing wastewater: Degradation, mechanism and
Xiuding Shi1, Zhi Huang2, Lihua Liu3
1College of Chemical Engineering, Huaqiao University, Xiamen 361021, China; Xiamen Engineering Research Center of Industrial Wastewater Biochemical Treatment, Xiamen 361021, China; Fujian Provincial Research Center of Industrial Wastewater Biochemical Treatment (Huaqiao University), Xiamen 361021, China.
This study developed an electrocatalytic coupled biofilter (EBF) system for effective cyclohexanone removal from contaminated water. The EBF system achieved high removal rates for cyclohexanone and other pollutants, demonstrating its potential for industrial wastewater treatment.
Area of Science:
- Environmental Engineering
- Water Treatment Technologies
- Applied Electrochemistry
Background:
- Biological treatment often faces limitations in efficiency and stability.
- Electrocatalytic coupled biofilter (EBF) technology integrates electrochemistry and microbial redox to enhance biological treatment performance.
- Cyclohexanone is a common industrial pollutant requiring effective removal methods.
Purpose of the Study:
- To develop and evaluate an EBF system for enhanced degradation of cyclohexanone in contaminated water.
- To determine the optimal parameters for cyclohexanone removal using the EBF system.
- To investigate the degradation pathways and microbial community dynamics within the EBF system.
Main Methods:
- Construction and operation of an electrocatalytic coupled biofilter (EBF) system.
- Experimental analysis of pollutant removal rates (cyclohexanone, TP, NH4+-N, TN).
- Degradation kinetics studies and microbial community analysis (16S rRNA sequencing).
Main Results:
- The EBF system achieved high removal efficiencies: cyclohexanone (97.61%), TP (76.31%), NH4+-N (94.14%), and TN (95.87%).
- Electrolysis, adsorption, and biodegradation were identified as key degradation pathways for cyclohexanone.
- Applied voltage influenced microbial community structure, shifting dominant genera and enhancing the abundance of key cyclohexanone-metabolizing bacteria.
Conclusions:
- The developed EBF system is highly effective for removing cyclohexanone and other pollutants from contaminated water.
- Voltage application in EBF systems can modulate microbial communities for improved pollutant degradation.
- This research provides guidance for constructing stable EBF systems for advanced industrial wastewater treatment.
