Synergistic interactions of microbial fuel cell and microbially induced carbonate precipitation technology with molasses as the substrate
Xiangming Hu, Jindi Liu, Weimin Cheng, Xiao Li, Yanyun Zhao, Feng Wang, Zhi Geng, Qingshan Wang, Yue Dong
Abstract
The application of microbially induced carbonate precipitation (MICP) technology is critical, but many challenges remain. In this paper, a microbial fuel cell (MFC) is used to treat molasses wastewater, and the effluent is used as the substrate to promote the growth of urease-producing bacteria. The results showed that the maximum voltage of MFC was 500 mV, and the maximum power density was 169.86 mW/m 2 . The mineralization rate reached 100% on the 15 th day, and the mineralized product was calcite CaCO 3 . According to the microbial community analysis, the unclassified_Comamondaceae , Arcobacter , and Aeromonas , which could improve the OH − , signal molecular transmission and small molecular nutrients to promote the urease activity of urease-producing bacteria. The above conclusions provide a new way to reuse molasses wastewater efficiently and to apply MICP technology in dust suppression.