Scaling-up of microbial electrosynthesis with multiple electrodes for in situ production of hydrogen peroxide
Rusen Zou,
Aliyeh Hasanzadeh,
Alireza Khataee,
Xiaoyong Yang,
Mingyi Xu,
Irini Angelidaki,
Yifeng Zhang
Affiliations
Rusen Zou
Department of Environmental Engineering, Technical University of Denmark, 2800 Lyngby, Denmark
Aliyeh Hasanzadeh
Process and Systems Engineering Center (PROSYS), Department of Chemical and Biochemical Engineering, Technical University of Denmark, Kgs. Lyngby, Denmark
Alireza Khataee
Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran; Рeoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow, 117198, Russian Federation
Xiaoyong Yang
Department of Environmental Engineering, Technical University of Denmark, 2800 Lyngby, Denmark
Mingyi Xu
Department of Environmental Engineering, Technical University of Denmark, 2800 Lyngby, Denmark
Irini Angelidaki
Department of Environmental Engineering, Technical University of Denmark, 2800 Lyngby, Denmark
Yifeng Zhang
Department of Environmental Engineering, Technical University of Denmark, 2800 Lyngby, Denmark; Corresponding author
Summary: Microbial electrosynthesis system (MES) has recently been shown to be a promising alternative way for realizing in situ and energy-saving synthesis of hydrogen peroxide (H2O2). Although promising, the scaling-up feasibility of such a process is rarely reported. In this study, a 20-L up-scaled two-chamber MES reactor was developed and investigated for in situ and efficient H2O2 electrosynthesis. Maximum H2O2 production rate of 10.82 mg L−1 h−1 and cumulative H2O2 concentration of 454.44 mg L−1 within 42 h were obtained with an input voltage of 0.6 V, cathodic aeration velocity of 0.045 mL min−1 mL−1, 50 mM Na2SO4, and initial pH 3. The electrical energy consumption regarding direct input voltage was only 0.239 kWh kg−1 H2O2, which was further much lower compared with laboratory-scale systems. The obtained results suggested that the future industrialization of MES technology for in situ synthesis of H2O2 and further application in environmental remediation have broad prospects.
