Complex Interactions Between the Macrophyte Acorus Calamus and Microbial Fuel Cells During Pyrene and Benzo[a]Pyrene Degradation in Sediments.
Complex Interactions Between the Macrophyte Acorus Calamus and Microbial Fuel Cells During Pyrene and Benzo[a]Pyrene Degradation in Sediments.
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沉积物中芘和苯并[a]芘降解期间大型植物石菖蒲与微生物燃料电池之间的复杂相互作用
DOI：
10.1038/srep10709
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发表时间：
2015-05-29
影响因子：
4.6
通讯作者：
Krumholz LR
中科院分区：
文献类型：
--
作者：
Yan Z;Jiang H;Cai H;Zhou Y;Krumholz LR
研究了水生植物菖蒲（Acorus calamus）与沉积物微生物燃料电池（SMFC）在降解沉积物中高分子量多环芳烃（HMW-PAHs）过程中的相互作用。在367天的时间里，与SMFC或单独的水生植物相比，水生植物和SMFC的组合导致芘和苯并[a]芘的降解率增加至少70%。而无论是大型植物或SMFC增加沉积物中的氧化还原电位，氧化还原电位附近的阳极（约6厘米深）的大型植物SMFC组合显着低于在唯一的大型植物治疗。此外，水生植物-SMFC和水生植物处理的根际细菌群落结构也有明显差异。好氧菌属（Vogesella，假单胞菌，黄杆菌和根瘤菌）和厌氧菌属（长枝孢属，Bellilobacca，脱硫芽孢杆菌和Anaeromyxacca）分别成为优势在水生植物和水生植物SMFC处理的根际。此外，水生植物SMFC组合提高了沉积物中的多环芳烃好氧和厌氧降解菌的数量。因此，SMFC的就业促进缺氧区的沉积物中的氧损失和分泌物从根。结果表明，水生植物与SMFC组合后，沉积物中厌氧/好氧微生物代谢协同作用加速了HMW-PAHs的去除.
This study investigated the interaction of the macrophyte Acorus calamus and sediment microbial fuel cells (SMFC) during the degradation of high molecular weight-polycyclic aromatic hydrocarbons (HMW-PAHs) in sediments. Over 367-days, the combination of macrophyte and SMFC led to an increase in pyrene and benzo[a]pyrene degradation rates by at least 70% compared to SMFC or macrophyte alone. While either the macrophyte or SMFC increased redox potential in sediments, redox potentials near the anode (approximately 6 cm depth) in the macrophyte-SMFC combination were markedly lower than that in the only macrophyte treatment. Moreover, rhizospheric bacterial communities in macrophyte-SMFC and macrophyte treatments were distinctly different. Aerobic genera (Vogesella, Pseudomonas, Flavobacterium and Rhizobium) and anaerobic genera (Longilinea, Bellilinea, Desulfobacca and Anaeromyxobacter) became dominant in the rhizosphere in macrophyte and macrophyte-SMFC treatments, respectively. In addition, the macrophyte-SMFC combination improved the numbers of not only aerobic but anaerobic PAHs degraders in sediments. So, the SMFC employment facilitated the formation of anoxic zones in sediments with oxygen loss and exudates from the roots. As a result, cooperation of anaerobic/aerobic microbial metabolism for accelerating HMW-PAHs removal occurred within sediments after combining macrophytes with SMFC.
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影响因子：
2.9
作者：
Blaszak, Magdalena;Pelech, Robert;Graczyk, Paulina
通讯作者：
Graczyk, Paulina
影响因子：
11.4
作者：
de Schamphelaire, Liesje;van den Bossche, Leen;Verstraete, Willy
通讯作者：
Verstraete, Willy
影响因子：
11.4
作者：
Helder, M.;Strik, D. P. B. T. B.;Buisman, C. J. N.
通讯作者：
Buisman, C. J. N.
影响因子：
11.4
作者：
Jouanneau, Y;Willison, JC;Blake, G
通讯作者：
Blake, G
影响因子：
11.4
作者：
LeFevre, Gregory H.;Hozalski, Raymond M.;Novak, Paige J.
通讯作者：
Novak, Paige J.