A low-temperature bioelectrochemical system strengthening method and device based on humin photo-thermal effect and electronic mediation synergy

CN122102364APending Publication Date: 2026-05-29NANJING TECH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING TECH UNIV
Filing Date
2026-03-27
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Under low temperature conditions, the metabolic activity and electron transfer rate of microbial electrochemical systems decrease, leading to a decline in system output performance. Existing low temperature enhancement strategies suffer from high energy consumption, high cost, or limited effectiveness, and lack synergistic enhancement methods.

Method used

By utilizing the photothermal effect of humulin to create localized heating at the electrode interface and promoting electron transfer through its reversible redox groups, a synergistic enhancement of the photothermal effect and electron-mediated transmission is achieved.

Benefits of technology

Under low-temperature conditions, it significantly improves the system output performance, has good stability and repeatability, avoids high energy consumption, and has low material cost and simple preparation.

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Abstract

The present application relates to the technical field of bioelectrochemistry, and discloses a low-temperature bioelectrochemical system reinforcing method and device based on humin photo-thermal effect and electron-mediated synergistic effect. The system comprises an anode chamber and a cathode chamber separated by an ion exchange membrane, and the anode is a conductive electrode with a humin coating, the coating surface being directionally coupled with an external light source. Humin converts light energy into heat energy under the action of light, realizes local heating of the electrode interface, and its contained reversible redox group participates in the electron transfer process, thereby reducing the system polarization and internal resistance. Through the synergistic effect of photo-thermal effect and electron-mediated effect, the current density, output stability and energy conversion efficiency of the bioelectrochemical system under low-temperature conditions can be significantly improved. The present application has simple structure, low cost and is easy to implement, and is suitable for energy recovery and wastewater treatment under low-temperature environment.
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