INTERACTION BETWEEN ANAEROBIC FERMENTATION OF WASTE ACTIVATED SLUDGE AND MICROPLASTICS

ZHENG Xiaoying; YANG Shanshan; YANG Mengmeng; ZHAO Zhilin; ZHANG Huijie; HAN Zongshuo; ZHOU Chao

doi:10.13205/j.hjgc.202304013

Volume 41 Issue 4

Apr. 2023

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2023 > 41(4): 92-100

ZHENG Xiaoying, YANG Shanshan, YANG Mengmeng, ZHAO Zhilin, ZHANG Huijie, HAN Zongshuo, ZHOU Chao. INTERACTION BETWEEN ANAEROBIC FERMENTATION OF WASTE ACTIVATED SLUDGE AND MICROPLASTICS[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(4): 92-100. doi: 10.13205/j.hjgc.202304013

Citation:

ZHENG Xiaoying, YANG Shanshan, YANG Mengmeng, ZHAO Zhilin, ZHANG Huijie, HAN Zongshuo, ZHOU Chao. INTERACTION BETWEEN ANAEROBIC FERMENTATION OF WASTE ACTIVATED SLUDGE AND MICROPLASTICS[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(4): 92-100. doi: 10.13205/j.hjgc.202304013

Citation:

ZHENG Xiaoying, YANG Shanshan, YANG Mengmeng, ZHAO Zhilin, ZHANG Huijie, HAN Zongshuo, ZHOU Chao. INTERACTION BETWEEN ANAEROBIC FERMENTATION OF WASTE ACTIVATED SLUDGE AND MICROPLASTICS[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(4): 92-100. doi: 10.13205/j.hjgc.202304013

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INTERACTION BETWEEN ANAEROBIC FERMENTATION OF WASTE ACTIVATED SLUDGE AND MICROPLASTICS

doi: 10.13205/j.hjgc.202304013

1. Key Laboratory of Integrated Regulation & Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China;
2. East China Branch, China Machinery International Engineering Design & Research Institute Co., Ltd., (CMIE), Nanjing 210049, China

Received Date: 2022-08-03
Available Online: 2023-05-26
Publish Date: 2023-04-01

Abstract

Abstract

The interaction mechanism between the typical microplastic of polyethylene (PE) and waste activated sludge anaerobic fermentation was studied under constant alkaline condition (constant pH=10) and unsteady alkaline (initial pH=10) condition. The results showed that PE had a significant contribution to acid production in the initial stage of anaerobic sludge fermentation, and showed the opposite trend in the later period. Under constant alkaline condition, compared to the blank group(R1), the VFAs production in the PE group (R2) decreased by 31.46%; under unsteady alkaline fermentation, compared to the blank group(R3), the VFAs production in the PE group (R4) decreased by 15.78%, indicating that PE had an inhibitory effect on the production of VFAs in anaerobic fermentation. Simultaneously, PE stimulated microorganisms to secrete more EPS (mainly proteins), decreased the zeta potential and disrupted the structure of EPS. In addition, the microplastic samples were characterized by SEM, Raman spectroscope, FTIR, XPS, and contact angle meter. The analysis results revealed that anaerobic fermentation of waste activated sludge system led to PE ageing due to environmental conditions and microbial activities, and the ageing rate of microplastics was faster under unsteady alkaline condition.
- polyethylene (PE),
- waste activated sludge,
- anaerobic fermentation,
- acid production,
- aging

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References(32)

References

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