Influence of SRT on enriching halophilic MMC with capacity of PHA storage - 文章详情页

作者：

Cui, Youwei (Cui, Youwei.) (学者：崔有为) | Lin, Xiaoyuan (Lin, Xiaoyuan.) | Ji, Siyuan (Ji, Siyuan.) | Shi, Yunpeng (Shi, Yunpeng.)

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摘要：

Enriching　mixed　microbial　culture　(MMC)　with　capacity　of　PHA　storage　via　controlling　the　enrichment　process　parameters　is　the　first　and　the　most　important　step　for　the　fermentation　production　of　PHA.　This　paper　elucidated　the　role　of　sludge　retention　time　(SRT)　in　the　enrichment　process　under　batch　culture　conditions.　The　results　showed　that　SRT　influenced　the　specific　substrate　degradation　rate　(qS),　specific　PHA　accumulation　rate　(qP)　and　the　PHA　storage　capacity　of　enriched　MMC.　The　long　SRT　(SRT-4　d)　led　to　the　decreased　qS,　qP　and　PHA　accumulation　ability.　The　short　SRT　reduced　the　PHA　conversion　rate　(YPHA/S)　and　PHA　accumulation　ability　of　MMC.　The　optimal　SRT　was　determined　as　2　d　for　enriched　MMC　in　this　study,　which　presented　56%　cell　dry　weight　PHA　content.　The　study　proved　that　the　SRT　played　the　important　role　in　enriching　halophilic　MMC,　which　laid　the　foundation　on　enriching　PHA-storage　MMC　rapidly.　©　All　Right　Reserved.

关键词：

Batch cell culture Concentration (process) Degradation Fermentation Polymers

作者机构：

[ 1 ] [Cui, Youwei]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Lin, Xiaoyuan]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Ji, Siyuan]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Shi, Yunpeng]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China

通讯作者信息：

崔有为
[cui, youwei]college of environmental and energy engineering, beijing university of technology, beijing; 100124, china

电子邮件地址：

cyw@bjut.edu.cn

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