Analysis of characteristics extracellular polymeric substances extracted from aerobic granular sludge by different methods

2018 1st International Conference on Environment Prevention and Pollution Control Technology

生态环境科学

Li, Yajing^1,2 ; Li, Zhu^1 ; Wang, Shaopo^1,2

Environmental and Municipal Engineering Department, TCU, Tianjin

300384, China^1

Tianjin Key Laboratory of Water Quality Science and Technology, Tianjin

300384, China^2

关键词: Aerobic granular sludges;    Bio-chemical compounds;    Cationic exchange resins;    Extracellular polymeric substances;    Extraction protocols;    Extraction techniques;    Humic-like substances;    Nucleic acid contents;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/199/3/032060/pdf
DOI  :  10.1088/1755-1315/199/3/032060

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The characteristics of the extracellular polymeric substances (EPS) extracted with eight different extraction protocols from two different types of aerobic granular sludge were studied. The efficiency of four single methods including NaOH, sonication, heating and cationic exchange resin (CER) and four their combination methods was compared with each other. The EPS of the aerobic granular sludge investigated are predominantly composed of polysaccharides, proteins, and humic-like substances. The nucleic acid content of the EPS extracted show that the extraction whether induce abnormal cellular lysis or not. The EPS content in each biochemical compound varies depending on the sludge type and extraction technique used. Combination methods can provide more EPS than every single method, which suggests that there is a complementary and mutual promoting relationship between each method.