Bioelectrocatalytic reduction by integrating pyrite assisted manganese cobalt-doped carbon nanofiber anode and bacteria for sustainable antimony catalytic removal

Nan Jiang; Mengying Yan; Qi Li; Shengyang Zheng; Yuan Hu; Xiaoyang Xu; Lin Wang; Yanbiao Liu; Manhong Huang

doi:10.1016/j.biortech.2024.130378

Bioelectrocatalytic reduction by integrating pyrite assisted manganese cobalt-doped carbon nanofiber anode and bacteria for sustainable antimony catalytic removal

Bioresour Technol. 2024 Mar:395:130378. doi: 10.1016/j.biortech.2024.130378. Epub 2024 Jan 26.

Authors

Nan Jiang¹, Mengying Yan¹, Qi Li¹, Shengyang Zheng², Yuan Hu¹, Xiaoyang Xu¹, Lin Wang³, Yanbiao Liu¹, Manhong Huang⁴

Affiliations

¹ Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
² College of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225127, China.
³ Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
⁴ Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai, 201620, China. Electronic address: huangmanhong@dhu.edu.cn.

PMID: 38281546
DOI: 10.1016/j.biortech.2024.130378

Abstract

A novel manganese cobalt metal-organic framework based carbon nanofiber electrode (MnCo/CNF) was prepared and used as microbial fuel cell (MFC) anode. Pyrite was introduced into the anode chamber (MnCoPy_MFC). Synergistic function between pyrite and MnCo/CNF facilitated the pollutants removal and energy generation in MnCoPy_MFC. MnCoPy_MFC showed the highest chemical oxygen demand removal efficiency (82 ± 1%) and the highest coulombic efficiency (35 ± 1%). MnCoPy_MFC achieved both efficient electricity generation (maximum voltage: 658 mV; maximum power density: 3.2 W/m³) and total antimony (Sb) removal efficiency (99%). The application of MnCo/CNF significantly enhanced the biocatalytic efficiency of MnCoPy_MFC, attributed to its large surface area and abundant porous structure that provided ample attachment sites for electroactive microorganisms. This study revealed the synergistic interaction between pyrite and MnCo/CNF anode, which provided a new strategy for the application of composite anode MFC in heavy metal removal and energy recovery.

Keywords: Bimetallic catalyst; Bioelectrochemical system; Metal-organic frameworks; Microbial fuel cell.

MeSH terms

Antimony
Bacteria / chemistry
Bioelectric Energy Sources* / microbiology
Carbon
Cobalt
Electricity
Electrodes
Iron*
Manganese
Nanofibers*
Nitrosourea Compounds*
Sulfides*

Substances

Carbon
pyrite
Manganese
Antimony
Cobalt
N(delta)-(N-methyl-N-nitrosocarbamoyl)-L-ornithine
Iron
Nitrosourea Compounds
Sulfides