Scaling-up of microbial electrosynthesis with multiple electrodes for in situ production of hydrogen peroxide

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. © 2021 The Author(s)

Authors
Zou R.1 , Hasanzadeh A.2 , Khataee A. 3, 4 , Yang X.1 , Xu M.1 , Angelidaki I.1 , Zhang Y. 1
Journal
Publisher
Elsevier Inc.
Number of issue
2
Language
English
Status
Published
Number
102094
Volume
24
Year
2021
Organizations
  • 1 Department of Environmental Engineering, Technical University of Denmark, Lyngby, 2800, Denmark
  • 2 Process and Systems Engineering Center (PROSYS), Department of Chemical and Biochemical Engineering, Technical University of Denmark, Kgs. Lyngby, Denmark
  • 3 Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, 51666-16471, Iran
  • 4 Рeoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow, 117198, Russian Federation
Keywords
biotechnology; electrochemistry; engineering; materials science
Date of creation
20.04.2021
Date of change
20.04.2021
Short link
https://repository.rudn.ru/en/records/article/record/71919/
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