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Book chapter · CRC Press eBooks · June 25, 2026

Advancements in Biochar-Enhanced Plant Microbial Fuel Cells (PMFCs) for Sustainable Energy in Central Asia: A Review

Wenliang Liu, Ankit Garg, Askar Zhussupbekov, Mahdi Karkush

Abstract

Plant Microbial Fuel Cells (PMFCs) integrated with biochar address Central Asia's pressing energy and environmental challenges, yet regional-specific analyses remain scarce. This review examines biochar-enhanced PMFCs as a sustainable solution for the region, where ecological crises like the Aral Sea's decline and soil salinization intersect with energy deficits. Biochar boosts PMFC efficiency by enhancing soil conductivity and microbial activity, increasing power density by 224% while enabling heavy metal removal (50–99%) and CO₂ sequestration (2.2 t/ha/year). Pilot studies in Kazakhstan and Uzbekistan demonstrate cost reductions (90%) using local agricultural waste. However, challenges persist, including low voltage stability (0.001–679 mW/m²) and short operational lifespans, necessitating optimized pyrolysis and microbial strategies. Scaling requires policy support, climate-resilient designs, and cross-sector partnerships. By linking energy generation, waste reuse, and ecosystem rehabilitation, this review proposes biochar-PMFCs as a scalable model for arid regions considering Central Asia's unique socio-environmental context.

Microbial Fuel Cells and BioremediationElectrochemical sensors and biosensorsInnovative Energy Harvesting Technologiesplant microbial fuel cellsbiocharheavy metal removal

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