Outstanding reinforcement on chain elongation through five-micrometer-sized biochar
Outstanding reinforcement on chain elongation through five-micrometer-sized biochar
复制标题
通过五微米大小的生物炭对链伸长具有出色的增强作用
DOI：
10.1016/j.renene.2020.07.126
复制
发表时间：
2020-12
期刊：
影响因子：
8.7
通讯作者：
Lu Fan
中科院分区：
文献类型：
--
作者：
Liu Yuhao;He Pinjing;Han Wenhao;Shao Liming;Lu Fan
在链延长过程中添加生物炭是提高己酸产量的一种可行方法。但是，选择合适粒径的生物炭是一个挑战。本研究将五种粒径的生物质炭引入链伸长中，考察其应用效果的差异。结果表明，小于5 μ m的生物炭显著提高了链延伸效率。与同类研究需要延长至约100天的反应期相比，反应期可大幅缩短至10天。当生物炭的掺入量小于5 μ m时，31天内己酸的选择性可达93.56%。优势菌在生物炭颗粒周围形成的偏向性附着的细胞网络结构是5 μ m以下生物炭增强链伸长的关键。小于5 μ m的生物炭大大改变了微生物群落结构，在很短的操作期间，促进Methanofollis和Defluviitoga，是最主要的属。小于5 μ m的生物炭引发的链伸长的显著增强可能归因于水溶液中较高的K+含量、电导率和比表面积。(C)2020爱思唯尔有限公司保留所有权利。
The incorporation of biochar in chain elongation was a feasible method to enhance caproate production. But, it is a challenge to choose biochar with appropriate particle sizes. In this study, five particle sizes of biochar were introduced in chain elongation to investigate the difference of application effect. The results showed that biochar smaller than 5 mu m significantly enhanced the efficiency of chain elongation. The reaction period could be drastically reduced to 10 days, comparing with the similar studies, in which the period needs to be extended to about 100 days. The selectivity of caproate was up to 93.56% in 31 days with the incorporation of biochar smaller than 5 mu m. The cell network structure formed by the biasedly attachment of predominant strains around biochar particle was the key to the enhancement of chain elongation by biochar smaller than 5 mu m. The biochar smaller than 5 mu m drastically altered the microbial community structure during a short operation period, promoting Methanofollis and Defluviitoga, to be the most predominant genera. The profound enhancement of chain elongation initiated by biochar smaller than 5 mu m probably be attributed to higher content of K+ in aqueous solution, electrical conductivity and surface area. (C) 2020 Elsevier Ltd. All rights reserved.
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DOI：
10.1099/ijs.0.033720-0
发表时间：
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影响因子：
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作者：
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