New insight for electricity amplification in microbial fuel cells (MFCs) applying magnesium hydroxide coated iron nanoparticles
微生物燃料電池(MFC)の電気増幅に新たな知見; 水酸化マグネシウムコーティングされた鉄ナノ粒子の応用
Bensaida, K.*; Maamoun, I.; Eljamal, R.*; Falyouna, O.*; 杉原 裕司*; Eljamal, O.*
Bensaida, K.*; Maamoun, I.; Eljamal, R.*; Falyouna, O.*; Sugihara, Yuji*; Eljamal, O.*
Microbial fuel cells (MFC) are a versatile technology for power generation from biodegradable solid wastes. This study examines the addition of bare and coated Fe0 nanoparticles to the anolyte of a lab-scale MFC for the first time. Four different coating ratios (0.1, 0.2, 0.5, and 1.0) were separately added and comparatively evaluated for power generation. The study examined the use of four different waste sludge substrates, different pH, and aerobic enriched cathode chambers effect on wastewater treatment and current production. Results showed that coating ratio of 0.2 was promising to achieve 4 times increase in the voltage compared to the control and provide the maximal power density. The current generation stability was achieved under neutral pH, and the power density output is maintained high under anaerobic conditions. The addition of the coated Fe0 nanoparticles is an effective method to enhance electricity generation and sludge digestion. However, additional parameters should be considered.