Department of Chemical Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.
Department of Physics, Faculty of Science, Ain Shams University, Cairo, Egypt.
Microbiologyopen. 2018 Aug;7(4):e00590. doi: 10.1002/mbo3.590. Epub 2018 Mar 24.
The impact of hydraulic retention time (HRT) on the performance and microbial community structure of control and electro-bioreactors was investigated. Control bioreactors and electro-bioreactors were operated at HRT ranging between 6 and 75 hr. The total bacterial counts in addition to the removal efficiency of NH -N, sCOD, and PO -P was assessed in all the reactors tested. In addition, Illumina sequencing was performed to determine the microbial communities that developed in these reactors under each HRT condition. Phylogenetic analysis showed that Proteobacteria and Bacteroidetes were the dominant phyla in those reactors. In addition, Nitrospira sp. and Pseudomonas sp. were found to be present in electro-bioreactors with higher relative abundance than in control bioreactors. The results presented here are the first to determine what different microbial communities in wastewater electro-bioreactors due to the application of an electric current under different HRTs.
研究了水力停留时间（HRT）对对照生物反应器和电生物反应器性能和微生物群落结构的影响。对照生物反应器和电生物反应器在 HRT 为 6 至 75 小时之间运行。在所有测试的反应器中，评估了总细菌计数以及 NH 3 -N、sCOD 和 PO 4 -P 的去除效率。此外，还进行了 Illumina 测序，以确定在每个 HRT 条件下在这些反应器中形成的微生物群落。系统发育分析表明，在这些反应器中，变形菌门和拟杆菌门是主要的门。此外，在电生物反应器中发现了 Nitrospira sp.和 Pseudomonas sp.，其相对丰度高于对照生物反应器。这里呈现的结果首次确定了在不同 HRT 下施加电流会导致废水电生物反应器中的不同微生物群落。
