Details

Autor(en) / Beteiligte

• Cui, Rong
• Wang, Jianhua
• Liu, Lifen
• Yu, Tingting
• Li, Yihua
• Gao, Changfei

Titel

Removal of radioactive ions in low-concentration nuclear industry wastewater with carbon-felt based iron/magnesium/zirconium polycrystalline catalytic cathode in a dual-chamber microbial fuel cell

Ist Teil von

• Journal of power sources, 2022-04, Vol.528, p.231208, Article 231208

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2022

Quelle

ScienceDirect

Beschreibungen/Notizen

• Recently, the treatment of nuclear industry wastewater has attracted much attention. However, due to the high energy consumption and low removal efficiency of the traditional treatment method, it is not suitable for the treatment of nuclear industry wastewater. Here, a dual-chamber Microbial fuel cell (MFC) with carbon-felt based Iron/Magnesium/Zirconium polycrystalline catalytic cathode is constructed to remove radioactive ions in low-concentration nuclear industry wastewater. After biofilm formation on the anode surface, a steady voltage output of 0.8 V is recorded, and the dual-chamber microbial fuel cell obtains a maximum power density of 1.4 W m−2 at the catholyte of pH 2, which is superior to Pt/C cathode. Moreover, the removal efficiency of the dual-chamber microbial fuel cell for radioactive ions exceeds 80%, and the removal efficiency for lanthanum and cerium is over 98% at the ion concentration of 5 mg L−1. This low-cost and high-performance bioelectrochemical system (BES) called microbial fuel cells opens a new exploration door to remove radioactive ions in nuclear industry wastewater with electricity production. [Display omitted] •Catalytic cathode assisted dual MFC was first applied to the removal of radioactive ions.•Simultaneous removal of radioactive ions with energy recovery.•Electroreduction and electrodeposition enhanced the removal of radioactive ions.•Fabricated catalytic cathode exhibited excellent electrocatalytic activity.•Simple discharge and removal of deposited radionuclides from electrode by electrolysis.