Liu Xinmin, Wu Jianjun, Guo Qingjie
a National Engineering Research Center of Coal Preparation and Purification , China University of Mining and Technology , Xuzhou , People's Republic of China.
b College of Chemical Engineering , Qingdao University of Science and Technology , Qingdao , People's Republic of China.
Environ Technol. 2017 Dec;38(24):3115-3121. doi: 10.1080/09593330.2017.1290147. Epub 2017 Feb 22.
A single-chambered packing-type anaerobic fluidized microbial fuel cell (AFBMFC) with coking wastewater (CWW) as fuel was built to treat CWW, which not only has high treating efficiency, but also can convert organic matter in wastewater into electricity. AFBMFC was constructed by using anaerobic sludge that was domesticated as inoculation sludge, which was used to biochemically treat CWW. The organic compounds in CWW were extracted by liquid-liquid extraction step by step every day. The extraction phase was concentrated by a rotary evaporator and a nitrogen sweeping device and was analyzed by GC-MS. And the electricity-generation performances of AFBMFC were investigated. The results show that the composition of CWW was complicated, which mainly contains hydrocarbons, phenols, nitrogenous organic compounds, alcohols and aldehydes, esters and acids and so on. After a cycle of anaerobic biochemical treatment, the content of organic compounds in the effluent decreased significantly. After the treatment of AFBMFC, 99.9% phenols, 98.4% alcohol and aldehydes and 95.3% nitrogenous compounds were biodegraded. In the effluent, some new compounds (such as tricosane and dibutyl phthalate) were produced. The chemical oxygen demand (COD) of CWW decreased from 3372 to 559 mg/L in the closed-circuit microbial fuel cell, and the COD removal was 83.4 ± 1.0%. The maximum power density of AFBMFC was 2.13 ± 0.01 mW m.
构建了以焦化废水（CWW）为燃料的单室填料型厌氧流化微生物燃料电池（AFBMFC）来处理焦化废水，该电池不仅处理效率高，还能将废水中的有机物转化为电能。AFBMFC通过使用经驯化的厌氧污泥作为接种污泥构建而成，用于对焦化废水进行生化处理。每天通过液液萃取逐步提取焦化废水中的有机化合物。萃取相经旋转蒸发器和氮气吹扫装置浓缩后，采用气相色谱 - 质谱联用仪（GC - MS）进行分析，并研究了AFBMFC的发电性能。结果表明，焦化废水成分复杂，主要含有烃类、酚类、含氮有机化合物、醇类、醛类、酯类和酸类等。经过一个厌氧生化处理周期后，出水有机化合物含量显著降低。经AFBMFC处理后，99.9%的酚类、98.4%的醇类和醛类以及95.3%的含氮化合物被生物降解。出水中产生了一些新化合物（如二十三烷和邻苯二甲酸二丁酯）。在闭路微生物燃料电池中，焦化废水的化学需氧量（COD）从3372降至559 mg/L，COD去除率为83.4±1.0%。AFBMFC的最大功率密度为2.13±0.01 mW/m。
