Potential application of bioelectrochemical systems in cold environments

Area of Science:

• Environmental Science
• Electrochemistry
• Microbiology

Background:

• Low temperatures inhibit microbial metabolic activity, limiting traditional biological treatments.
• Over half the world's population lives in cold environments, necessitating cold-tolerant treatment solutions.
• Bioelectrochemical systems (BES) leverage electrochemistry and biocatalysis to enhance microbial resilience in cold conditions.

Purpose of the Study:

• To review the potential applications of BES in low-temperature environments.
• To analyze microbial fuel cells (MFCs), microbial electrolytic cells (MECs), and microbial electrosynthesis cells (MES) for cold conditions.
• To identify factors influencing BES performance in psychrophilic environments.

Main Methods:

• Comparative analysis of MFC, MEC, and MES operational mechanisms and applications.
• Review of existing research on BES in low-temperature settings.
• Exploration of influencing factors: operational parameters, electrodes, membranes, voltage, oxygen, and devices.

Main Results:

• MFCs are suitable for environmental remediation and biosensing in cold climates.
• MECs and MESs are effective for hydrogen and methane production at low temperatures.
• BES demonstrate technical, economic, and environmental feasibility for cold environments.

Conclusions:

• BES offer a viable solution for biological treatments in cold regions.
• Further research and development are needed to optimize BES for widespread low-temperature application.
• BES have significant potential for sustainable development in psychrophilic environments.