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活性污泥合成可生物降解塑料PHB的工艺优化研究
  • ISSN号：0023-074X
  • 期刊名称：《科学通报》
  • 时间：0
  • 分类：TQ324.9[化学工程—合成树脂塑料工业] X703[环境科学与工程—环境工程]
  • 作者机构：[1]中国科学院生态环境研究中心,水质学国家重点实验室,北京100085
  • 相关基金：国家自然科学基金资助项目（批准号：50621804）
作者： 曲波[1], 刘俊新[1]
关键词： 聚β-羟基丁酸酯(PHB), 活性污泥, 动态底物投加, 最优操作条件
中文摘要：

研究了活性污泥在两段工艺中进行可生物降解塑料聚-β-羟基丁酸酯（Polyhydroxybutyrate，PHB）的生物合成．在第一段中，按动态底物投加方式操作SBR选择和富集出具有贮存能力的活性污泥，然后在第二段的批次反应器中完成PHB的贮存．重点研究了操作条件的优化以期获得最高的污泥PHB含量．评价了批次反应器中三个关键参数一溶解氧（DO）浓度、pH值和底物-生物量比（food—microorganismratio，F／M）对PHB贮存过程的影响．结果表明：底物的吸收速率、PHB产率和胞内含量均随溶解氧浓度的提高而提高；在7．0～10范围内，pH值对贮存过程没有明显影响；提高F／M比有利于提高PHB的胞内含量，在F／M比为4．5C—mmol／C—mmol时，获得了最高的PHB含量64％．但当F／M比继续提高到6．0C—mmol／C—mmol时，发生了胞内PHB和外源底物同时被利用的现象，结果导致PHB含量降低．

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期刊信息
  • 《科学通报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国科学院
  • 主编：周光召
  • 地址：北京东黄城根北街16号
  • 邮编：100717
  • 邮箱：csb@scichina.org
  • 电话：010-64036120 64012686
  • 国际标准刊号：ISSN：0023-074X
  • 国内统一刊号：ISSN：11-1784/N
  • 邮发代号:80-213
  • 获奖情况:
  • 首届国家期刊奖,中国期刊方阵“双高”期刊,第三届中国出版政府奖
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,美国数学评论（网络版）,美国工程索引,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:81792