Cost-efficient microbial electrosynthesis of hydrogen peroxide on a facile-prepared floating electrode by entrapping oxygen

Research output: Contribution to journalJournal articleResearchpeer-review

34 Downloads (Pure)

Abstract

Microbial electrosynthesis of hydrogen peroxide is receiving growing interest for a green substitute for anthraquinone process. However, poor oxygen transmission of electrode remains an obstacle to enhance H2O2 production rate without aeration. Here, a superhydrophobic natural air diffusion floating electrode (NADFE), which naturally and efficiently entraps O2 in the air, was proposed for the first time to improve microbial electrosynthesis of H2O2. Furthermore, a one-step calcined electrode preparation method was developed to reduce energy consumption further. In the microbial electrolysis cell with the NADFE, a high H2O2 production rate of 39 mg/L/h and current efficiency of 86% were achieved without aeration. The production rate of H2O2 was 2.2 times that of a gas diffusion electrode. Importantly, the energy consumption was 34.3 times lower than an electrochemical system. Therefore, the high H2O2 production rate and current efficiency, and low energy consumption of the process provide a superior alternative for environmental remediation.
Original languageEnglish
Article number125995
JournalBioresource Technology
Volume342
Number of pages9
ISSN0960-8524
DOIs
Publication statusPublished - 2021

Keywords

  • H2O2 production
  • Energy consumption
  • Bioelectrochemistry
  • Neutral Fenton
  • Catalysis

Fingerprint

Dive into the research topics of 'Cost-efficient microbial electrosynthesis of hydrogen peroxide on a facile-prepared floating electrode by entrapping oxygen'. Together they form a unique fingerprint.

Cite this