CAJ | 학술논문

采用单室微生物电解池(MEC)反应器为实验装置,通过预处理技术强化发酵制氢废液中乙酸的积累,并将该发酵废液作为底物,考察了以废液中累积的乙酸作为主要电子供体、碳布为阳极、涂布有Ni纳米颗粒的不锈钢网为催化阴极的产氢效果.结果表明,在MEC中,以预处理的发酵制氢废液积累的乙酸为底物,最高产氢率可达(1.31±0.04) m3H2/(m3·d)和(2.78±0.11) mLH2/mgCOD ,同时可获得138.6%±3.1%的能量效率和99.0%±0.3%的COD去除率.实验表明,利用MEC可将发酵末端产物进一步降解,从而减弱了“发酵障碍”现象,实现了治污和产能的统一.
채용단실미생물전해지(MEC)반응기위실험장치,통과예처리기술강화발효제경폐액중을산적적루,병장해발효폐액작위저물,고찰료이폐액중루적적을산작위주요전자공체、탄포위양겁、도포유Ni납미과립적불수강망위최화음겁적산경효과.결과표명,재MEC중,이예처리적발효제경폐액적루적을산위저물,최고산경솔가체(1.31±0.04) m3H2/(m3·d)화(2.78±0.11) mLH2/mgCOD ,동시가획득138.6%±3.1%적능량효솔화99.0%±0.3%적COD거제솔.실험표명,이용MEC가장발효말단산물진일보강해,종이감약료“발효장애”현상,실현료치오화산능적통일.
This research used a single chamber microbial electrolysis cell(MEC)as the reactor to treat the pretreated fermentation effluent rich in acetic acid to produce hydrogen. The accumulated acetic acid was chosen as the main electron donor,with carbon cloth as the anode and the stainless steel wire mesh coated with Ni nanoparticles as the catalyst. The experimental results showed that in the MEC fed by the fermentation effluent reached a maximum hydrogen yield of (1.31±0.04) m3H2/(m3·d) and (2.78±0.11) mLH2/mgCOD , and energy efficiency of 138.6%±3.1% with COD removal of 99.0%±0.3%. This research also revealed that MEC could degrade the liquid end-products spontaneously and decrease the“fermentation barrier”to realize production control and energy product.