ENHANCED REMOVAL OF PHENOLIC COMPOUNDS IN COAL GASIFICATION WASTEWATER BY IRON-CARBON MICROELECTROLYSIS PROCESS

MA Weiwei; SHI Xueqing; KONG Qiaoping; YU Tong; HAN Hongjun

doi:DOI:10.13205/j.hjgc.202207003

Volume 40 Issue 7

Sep. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(7): 18-24

MA Weiwei, SHI Xueqing, KONG Qiaoping, YU Tong, HAN Hongjun. ENHANCED REMOVAL OF PHENOLIC COMPOUNDS IN COAL GASIFICATION WASTEWATER BY IRON-CARBON MICROELECTROLYSIS PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(7): 18-24. doi: DOI:10.13205/j.hjgc.202207003

Citation:

MA Weiwei, SHI Xueqing, KONG Qiaoping, YU Tong, HAN Hongjun. ENHANCED REMOVAL OF PHENOLIC COMPOUNDS IN COAL GASIFICATION WASTEWATER BY IRON-CARBON MICROELECTROLYSIS PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(7): 18-24. doi: DOI:10.13205/j.hjgc.202207003

Citation:

MA Weiwei, SHI Xueqing, KONG Qiaoping, YU Tong, HAN Hongjun. ENHANCED REMOVAL OF PHENOLIC COMPOUNDS IN COAL GASIFICATION WASTEWATER BY IRON-CARBON MICROELECTROLYSIS PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(7): 18-24. doi: DOI:10.13205/j.hjgc.202207003

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ENHANCED REMOVAL OF PHENOLIC COMPOUNDS IN COAL GASIFICATION WASTEWATER BY IRON-CARBON MICROELECTROLYSIS PROCESS

doi: DOI:10.13205/j.hjgc.202207003

1. School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China;
2. School of Environment, Harbin Institute of Technology, Harbin 150090, China

Received Date: 2021-01-23
Available Online: 2022-09-02

Abstract

Abstract

In this study,the removal efficiency of phenolic compounds in coal gasification wastewater (CGW) and biodegradability were investigated by iron-carbon microelectrolysis (ICME) treatment.The results indicated that the iron-carbon composite (Fe/C) filler had a high iron and carbon ratio and rich pore structure,thereby performed higher reactivity.The single factor analysis showed that low dissolved oxygen (DO) and acidic condition were more favorable to microelectrolysis reaction in CGW treatment.However,it was not conducive to ICME reaction when the Fe/C filler content was too high or too low.The response surface method suggested that the optimum condition of the ICME process for phenolic compounds removal was the pH of 6.50,Fe/C filler content of 62.22 g/L,DO concentration of 0.47 mg/L.Based on the optimum condition,the removal efficiency of COD and total phenol reached 80.98% and 75.03%,respectively.The BOD₅/COD value of CGW was increased from 0.21 to 0.36.The above results demonstrated that ICME played an important role in strengthening the removal of phenolic compounds in CGW,which provided better water quality for subsequent biochemical treatment.
- coal gasification wastewater,
- iron-carbon microelectrolysis,
- phenolic compounds,
- response surface method

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References(25)

References

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