Development and life cycle assessment of an auto circulating bioelectrochemical reactor for energy positive continuous wastewater treatment
Development and life cycle assessment of an auto circulating bioelectrochemical reactor for energy positive continuous wastewater treatment
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DOI：
10.1016/j.biortech.2020.122959
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发表时间：
2020-05-01
影响因子：
11.4
通讯作者：
Pant, Deepak
中科院分区：
文献类型：
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作者：
Mathuriya, Abhilasha Singh;Hiloidhari, Moonmoon;Pant, Deepak
生物电化学系统如微生物燃料电池（MFC）是已知利用微生物的催化活性将有机物质的化学能转化为电能的奇特系统。针对“简单、廉价、紧凑”的设计差距，开发了一种新型的连续式自动循环生物电化学反应器（AutoCirBER），该反应器可以在较短的停留时间内连续处理大量有机废水，且不需要消耗外部能量进行液体混合。AutoCirBER消除了液体混合的外部搅拌的需要，因此，能源需求。AutoCirBER在连续模式下操作，并优化水力停留时间。对反应器进行了性能检测，即COD去除率、净发电量、库仑效率、污泥生成量，并进行了归因生命周期评价（LCA）。AutoCirBER可持续运行在连续模式下，并显示出超过90.4%的COD去除率和59.55 W.h净年能量回收率。AutoCirBER的实验LCA也显示了其在长期运行中的环境可行性。
Bioelectrochemical systems like microbial fuel cells (MFCs) are quaint systems known to metamorphose the chemical energy of organic matter into electrical energy using catalytic activity of microorganisms. A novel continuous Auto Circulating Bio-Electrochemical Reactor (AutoCirBER) was developed to fulfil the gap of `simple, inexpensive and compact design' that can continuously treat larger amount of organic wastewater at shorter residence time and without consuming external energy for liquid mixing. AutoCirBER eliminated the need for external agitation for liquid-mixing and therefore, energy requirements. AutoCirBER was operated in continuous-mode and hydraulic retention time was optimized. The reactor underwent performance check-up viz. COD removal, net power output, columbic efficiency, sludge generation and an attributional life cycle assessment (LCA) was also conducted. AutoCirBER was sustainable to run in continuous-mode and showed more than 90.4% of COD removal, and 59.55 W.h net annual energy recovery. Experimental LCA of AutoCirBER also displays its environmental feasibility in longer run.