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  • Open Access


    Study on Influencing Factors of Methane Production Efficiency of Microbial Electrolytic Cell with CO2 as Carbon Source

    Qifen Li, Yuanbo Hou*, Yongwen Yang, Liting Zhang, Xiaoxiao Yan

    Journal of Renewable Materials, Vol.11, No.8, pp. 3333-3350, 2023, DOI:10.32604/jrm.2023.027464

    Abstract Reducing CO2 to produce methane through microbial electrolytic cell (MEC) is one of the important methods of CO2 resource utilization. In view of the problem of low methanogenesis rate and weak CO2 conversion rate in the reduction process, the flow field environment of the cathode chamber is changed by changing the upper gas circulation rate and the lower liquid circulation rate of the cathode chamber to explore the impact on the reactor startup and operation and products. The results showed that under certain conditions, the CO2 consumption and methane production rate could be increased by changing the upper gas recirculation… More >

  • Open Access


    The Role of Biochar to Enhance Anaerobic Digestion: A Review

    Shuai Tang1, Zixin Wang2, Zhidan Liu1, Yuanhui Zhang2, Buchun Si1,*

    Journal of Renewable Materials, Vol.8, No.9, pp. 1033-1052, 2020, DOI:10.32604/jrm.2020.011887

    Abstract Biochar, one of the products of thermochemical conversion of biomass, possesses specific physiochemical properties such as conductivity, pore adsorption, surface functional groups, and cation exchange capacity. Anaerobic digestion (AD) as a classical bio-wastes conversion technology, suffers from inhibitions, process instability, and methanogenic inefficiency which limit its effi- ciency. With the advantages of pH buffering, functional microbes enrichment, inhibitors alleviating, and direct interspecies electron transfer (DIET) accelerating, biochar suggests a promising application as additives for AD. Herein, this paper reviewed the noting physicochemical properties of biochar, and discussed its roles and related mechanisms in AD. Further, this paper highlighted the advantages… More >

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