Environmental Biotechnology Laboratory, Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur (IIT J), Jodhpur, Rajasthan 342037, India.
Department of Mechanical Engineering, Indian Institute of Technology Jodhpur (IIT J), Jodhpur, Rajasthan 342037, India.
Bioresour Technol. 2018 May;256:391-398. doi: 10.1016/j.biortech.2018.02.044. Epub 2018 Feb 10.
In this study, Microbial Fuel Cell (MFC) capable of treating saline starch water was developed. Sodium chloride (NaCl) concentrations ranging from 500 mM to 3000 mM were tested at the anode. Nitrate was used as an electron acceptor at the biocathode. The halophilic bacteria were isolated from Sambhar Lake, India. Results indicated successful removal of starch (1.83 kg/m-d) and nitrate (0.13 kg/m-d NO-N) with concomitant power output of 207.05 mW/m at 1000 mM NaCl concentration. An increase in power density from 71.06 mW/m to 207.05 mW/m (2.92 folds) was observed when NaCl concentration was increased from 500 mM to 1000 mM. A decline in power density was observed when the salt concentrations >1000 mM were used. Concentration of 3000 mM supported power output as well as the highest starch degradation (3.2 kg/m-d) and amylase activity of 2.26 IU/ml. The halophilic exoelectrogens were isolated and identified. The present study demonstrates the utility of MFC for degrading starch in saline water.
本研究开发了一种能够处理含盐淀粉水的微生物燃料电池（MFC）。在阳极测试了从 500mM 到 3000mM 的氯化钠（NaCl）浓度。硝酸盐在生物阴极用作电子受体。嗜盐细菌从印度的桑布尔湖分离得到。结果表明，在 1000mM NaCl 浓度下，成功去除了淀粉（1.83kg/m-d）和硝酸盐（0.13kg/m-d 的 NO-N），同时产生了 207.05mW/m 的功率输出。当 NaCl 浓度从 500mM 增加到 1000mM 时，功率密度从 71.06mW/m 增加到 207.05mW/m（增加了 2.92 倍）。当使用的盐浓度>1000mM 时，功率密度会下降。3000mM 的浓度支持的输出功率以及最高的淀粉降解（3.2kg/m-d）和淀粉酶活性为 2.26IU/ml。分离并鉴定了嗜盐的外生菌。本研究证明了 MFC 在降解盐水中淀粉的实用性。
