Exploratory study on improving the benthic environment in sediment by sediment microbial fuel cells
Exploratory study on improving the benthic environment in sediment by sediment microbial fuel cells
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沉积物微生物燃料电池改善沉积物底栖环境的探索性研究
DOI：
10.1007/s13762-017-1418-8
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发表时间：
2018
影响因子：
3.1
通讯作者：
Y
中科院分区：
文献类型：
--
作者：
Touch;N.;Hibino;T.;Kinjo;N. Morimoto;Y
底栖生物不能在强烈还原的沉积物中生存，那里的氧化还原电位约为−400mV。这类沉积物通常在暴露在废水排放中的内港发现。通过现场实验研究了沉积物微生物燃料电池(SMFCs)在改善底泥底栖生物环境方面的潜力。据我们所知，这在以前的任何文献中都没有报道过。收集了海底沉积物，并将其用于为悬浮在水面500毫米以下的SMFC提供燃料。在安装后一年收集沉积物，并调查其底栖生物环境。最显着的结果是，施加SMFC的底泥中底栖动物的多样性和生长量高于对照底泥。结果进一步证实，强化了底泥修复，降低了底泥耗氧速率，增加了有机质的矿化。我们的研究结果表明，SMFC在修复强烈减少的沉积物和改善底栖生物环境方面是一种很有前途的技术。
Benthos cannot survive in strongly reduced sediments, in which the redox potential is around −400 mV. Such sediments are typically found in inner harbors that are exposed to wastewater discharges. Field experiments were conducted to investigate the potential of sediment microbial fuel cells (SMFCs) for improving the benthic environment in such sediments. To the best of our knowledge, this has not been reported in any previous literature. Bottom sediment was collected and used to fuel an SMFC suspended 500 mm below the water surface. The sediments then were collected one year after installation, and their benthos environment was investigated. The most remarkable results are that the diversity and growth of benthos were higher in the SMFC-applied sediment than in a control sediment. The results have further strengthened that the sediment remediation was enhanced, in which the oxygen consumption rate of the sediment was reduced, and the mineralization of the organic matter was increased. Our findings suggest that SMFCs are a promising technology for the remediation of strongly reduced sediment and for the improvement of the benthic environment.