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Process Analysis of Anaerobic Fermentation Exposure to Metal Mixtures

Author

Listed:
  • Yonglan Tian

    (Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University, Beijing 102206, China)

  • Huayong Zhang

    (Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University, Beijing 102206, China)

  • Lei Zheng

    (Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University, Beijing 102206, China)

  • Shusen Li

    (Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University, Beijing 102206, China)

  • He Hao

    (Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University, Beijing 102206, China)

  • Meixiao Yin

    (Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University, Beijing 102206, China)

  • Yudong Cao

    (Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University, Beijing 102206, China)

  • Hai Huang

    (Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University, Beijing 102206, China)

Abstract

Anaerobic fermentation is a cost-effective biowaste disposal approach. During fermentation, microorganisms require a trace amount of metals for optimal growth and performance. This study investigated the effects of metal mixtures on biogas properties, process stability, substrate degradation, enzyme activity, and microbial communities during anaerobic fermentation. The addition of iron (Fe), nickel (Ni), and zinc (Zn) into a copper (Cu)-stressed fermentation system resulted in higher cumulative biogas yields, ammonia nitrogen (NH 4 + -N) concentrations and coenzyme F 420 activities. Ni and Zn addition enhanced process stability and acetate utilization. The addition of these metals also improved and brought forward the peak daily biogas yields as well as increased CH 4 content to 88.94 and 86.58%, respectively. Adding Zn into the Cu-stressed system improved the abundance of Defluviitoga , Fibrobacter and Methanothermobacter , the degradation of cellulose, and the transformation of CO 2 to CH 4 . The bacterial and archaeal communities were responsible for the degradation of lignocelluloses and CH 4 production during the fermentation process. This study supports the reutilization of heavy metal-contaminated biowaste and provides references for further research on heavy metals impacted anaerobic fermentation.

Suggested Citation

  • Yonglan Tian & Huayong Zhang & Lei Zheng & Shusen Li & He Hao & Meixiao Yin & Yudong Cao & Hai Huang, 2019. "Process Analysis of Anaerobic Fermentation Exposure to Metal Mixtures," IJERPH, MDPI, vol. 16(14), pages 1-21, July.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:14:p:2458-:d:247299
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    References listed on IDEAS

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    1. Christy E. Manyi-Loh & Sampson N. Mamphweli & Edson L. Meyer & Anthony I. Okoh & Golden Makaka & Michael Simon, 2013. "Microbial Anaerobic Digestion (Bio-Digesters) as an Approach to the Decontamination of Animal Wastes in Pollution Control and the Generation of Renewable Energy," IJERPH, MDPI, vol. 10(9), pages 1-28, September.
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    Cited by:

    1. Zhang, Jing & Mao, Chunlan & khan, Aman & Zhao, Shuai & Gao, Tianpeng & Mikhailovna Redina, Margarita & Zhang, Qing & Song, Peizhi & Liu, Pu & Li, Xiangkai, 2022. "Enhanced methane production by using phytoremediated Halogeton glomeratus as substrate via anaerobic digestion," Renewable Energy, Elsevier, vol. 194(C), pages 28-39.
    2. Yonglan Tian & Huayong Zhang & Lei Zheng & Shusen Li & He Hao & Hai Huang, 2019. "Effect of Zn Addition on the Cd-Containing Anaerobic Fermentation Process: Biodegradation and Microbial Communities," IJERPH, MDPI, vol. 16(16), pages 1-17, August.

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