Biodegradation of organic matter and anodic microbial communities analysis in sediment microbial fuel cells with/without Fe(III) oxide addition
Biodegradation of organic matter and anodic microbial communities analysis in sediment microbial fuel cells with/without Fe(III) oxide addition
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添加/不添加 Fe(III) 氧化物的沉积物微生物燃料电池中有机物的生物降解和阳极微生物群落分析
DOI：
10.1016/j.biortech.2016.11.126
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发表时间：
2017
影响因子：
11.4
通讯作者：
Zhang Weixian
中科院分区：
文献类型：
--
作者：
Xu Xun;Zhao Qingliang;Wu Mingsong;Ding Jing;Zhang Weixian
为提高沉积物微生物燃料电池（SMFC）对有机物的降解能力，在沉积物中添加Fe（III）氧化物作为电子受体。结果表明，添加Fe（III）氧化物的SMFC比未添加Fe（III）氧化物的SMFC和开路生物反应器对有机物的去除效率更高，最大功率密度（Pmax）为87.85 mW/m2，最大电压（Vmax）为0.664 V。UV-254和比紫外吸光度（苏瓦）的变化也证明沉积物中的有机物可以被有效去除。阳极微生物群落的高通量测序表明，在SMFC阳极上形成的生物膜中，主要检测到来自Geobacter的细菌（21.23%），而在Fe（III）氧化物存在下，假单胞菌是最主要的属（18.12%）。此外，与开放式生物反应器相比，SMFC中更多的产电菌附着在阳极生物膜上。
To enhance the biodegradation of organic matter in sediment microbial fuel cell (SMFC), Fe(III) oxide, as an alternative electron acceptor, was added into the sediment. Results showed that the SMFC with Fe(III) oxide addition obtained higher removal efficiencies for organics than the SMFC without Fe(III) oxide addition and open circuit bioreactor, and produced a maximum power density (Pmax) of 87.85 mW/m2with a corresponding maximum voltage (Vmax) of 0.664 V. The alteration of UV-254 and specific ultraviolet absorbance (SUVA) also demonstrated the organic matter in sediments can be effectively removed. High-throughput sequencing of anodic microbial communities indicated that bacteria from the genusGeobacterwere predominantly detected (21.23%) in the biofilm formed on the anode of SMFCs, whilePseudomonaswas the most predominant genus (18.12%) in the presence of Fe(III) oxide. Additionally, compared with the open circuit bioreactor, more electrogenic bacteria attached to the biofilm of anode in SMFCs.