Characterization of polyhydroxyalkanoates synthesized in activated sludge using three carbon sources  

作　　者：ZHANG Yan-ping 张艳萍(Department of Environmental Science and Engineering,Beijing Technology and Business University)

机构地区：Department of Environmental Science and Engineering, Beijing Technology and Business University Beijing 100048, China

出　　处：《Journal of Beijing Institute of Technology》2016年第3期429-434,共6页北京理工大学学报（英文版）

基　　金：Supported by the National Science&Technology Pillar Program During the 12th Five-Year Plan Period(2014BAC28B01);Beijing Natural Science Foundation(8112012)

摘　　要：Polyhydroxyalkanoates（PHAs）were synthesized in activated sludge using three types of carbon sources（sodium acetate,sodium propionate and sodium butyrate）,and their characterization were studied.It was shown that the content of PHA synthesized by microorganisms in activated sludge were different.The biggest synthetic amount up to 36.7% of VSS was obtained when sodium acetate was used as carbon source.The polymer yield was lower when using sodium propionate as the carbon source than when using others,with25.1% of VSS,while resulted in an increase of hydroxyvalerate（HV）units produced.The structure and thermal properties of extracted biopolymers were analyzed by scanning electron microscope（SEM）,Fourier transform infrared spectroscopy（FTIR）and themogravimetry（TG）.Polyhydroxyalkanoates（PHAs）were synthesized in activated sludge using three types of carbon sources（sodium acetate,sodium propionate and sodium butyrate）,and their characterization were studied.It was shown that the content of PHA synthesized by microorganisms in activated sludge were different.The biggest synthetic amount up to 36.7% of VSS was obtained when sodium acetate was used as carbon source.The polymer yield was lower when using sodium propionate as the carbon source than when using others,with25.1% of VSS,while resulted in an increase of hydroxyvalerate（HV）units produced.The structure and thermal properties of extracted biopolymers were analyzed by scanning electron microscope（SEM）,Fourier transform infrared spectroscopy（FTIR）and themogravimetry（TG）.

关 键 词：polyhydroxyalkanoates （PHAs） bio-polymer scanning electron microscope （ SEM ） Fourier transform infrared spectroscopy （FTIR） activated sludge 

分 类 号：O633.14[理学—高分子化学] X703[理学—化学]