電子梭結構探討應用於微生物燃料電池之可行性研究

Feasibility Study of Electron Shuttle Structures upon Microbial Fuel Cell (MFC)-Based Bioremediation

岳沛林(P. L. Yueh) ； 陳博彥(B. Y. Chen) ； 薛仲娟(C. C. Hsueh)

《鑛冶：中國鑛冶工程學會會刊》 59卷2期 (2015/06) Pp. 99-107

https://doi.org/10.30069/MM.201506_59(2).0008

摘要

先前研究指出，染料生物處理所產生之降解中間物具有電子梭（ESs）催化特性，可更有效刺激胞外電子傳遞效率，同時亦可促進染料廢水的脫色作用，並具有電能回收之可行性角色，更指出構成電子梭或具有生物可分解性的關鍵，主要在於化合物官能基結構上，而且在電子轉移機制上扮演著極重要的角色。本研究以此為基礎，將先前研究發現之各種中間物（例如：偶氮染料降解之相關2AP, 4AP,12db, 14db, b12d, b14d, 1A2N, 4A1N）及非偶氮硫堇類染料（如：Thionine、Azure A、Azure C等）加入微生物燃料電池（MFCs）中作整體性地進行電子轉移研究，亦以MFC為手段來運用電子梭提升生物產電效能，同時對生物降解之促進進行系統性結論性初探。因此本研究更將探討到染料具電子梭功能之可能結構，化學結構對生物分解性之相關影響，及電子梭能否能促進生物降解相關問題，再以上述三點來討論適合MFC之電子梭結構，並探討出最具效益及環境友善之MFC操作模式。

關鍵字

電子梭 ； 芳香胺中間物 ； 微生物燃料電池 ； 生物毒性 ； 生物可分解性

並列摘要

Prior studies indicated that degraded intermediates of biotreatment can play a crucial role as electron shuttles (ESs) to autocatalyze exogenous electron transport of pollutant degradation. They can simultaneously stimulate dye biodecolorization and electric energy recycling. This study showed that the electron-mediating characteristics of these intermediates were strongly dependent upon their functional groups present in the chemical structures. We evaluated the potential of electron-transporting characteristics of these chemicals (e.g., 2AP, 4AP, 12db, 14db, b12d, b14d, 1A2N, 4A1N) and thionine-based textile dyes (i.e., thionine, azure A, azure C) for practical applications. We observed that using microbial fuel cell (MFC) as operation strategy could effectively augment bioelectricity-generating capabilities for pollutant degradation. We also observed feasible chemical structures of ESs for pollutant degradation, deciphering-associated issues of ES-enhanced biotreatment. We concluded that ES structures can stimulate environmentally-friendly MFC-based bioremediation.

並列關鍵字

Electron shuttle ； Aromatic amine intermediates ； Microbial fuel cell ； Biotoxicity ； Biodegradability