Microbial reverse-electrodialysis chemical-production cell for acid and alkali production
作者： Xiuping Zhu , Marta C. Hatzell , Roland D. Cusick , Bruce E. Logan
DOI: 10.1016/J.ELECOM.2013.03.010
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摘要: Abstract A new type of bioelectrochemical system, called a microbial reverse-electrodialysis chemical-production cell (MRCC), was developed to produce acid and alkali using energy derived from organic matter (acetate) salinity gradients (NaCl solutions representative seawater river water). bipolar membrane (BPM) placed next the anode prevent Cl − contamination acidification anolyte, protons for HCl recovery. 5-cell paired (RED) stack provided electrical required overcome BPM over-potential (0.3–0.6 V), making overall process spontaneous. The MRCC reactor produced electricity (908 mW/m 2 ) as well concentrated acidic alkaline solutions, therefore did not require an external power supply. After fed-batch cycle, pHs chemical product were 1.65 ± 0.04 11.98 ± 0.10, due production 1.35 ± 0.13 mmol acid, 0.59 ± 0.14 mmol alkali. acid- alkali-production efficiencies based on generated current 58 ± 3% 25 ± 3%. These results demonstrated proof-of-concept only renewable sources.
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