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Biochemical diversity of the bacterial strains and their biopolymer producing capabilities in wastewater sludge.

Abstract：

:The biochemical characterization of 13 extracellular polymeric substances (EPS) producing bacterial strains were carried out by BIOLOG. The bacterial strains were cultured in sterilized sludge for EPS production. Flocculation and dewatering capabilities of produced EPS (broth, crude slime and capsular) were examined using kaolin suspension combined with calcium (150 mg of Ca(2+)/L of kaolin suspension). BIOLOG revealed that there were 9 Bacillus, 2 Serratia and 2 Yersinia species. Most of these bacterial strains had the capability to utilize wide spectrum of carbon and nitrogen sources. EPS concentration of more than 1g/L was produced by most of the bacterial strains. Concentration of EPS produced by different Bacillus strains was higher than that of Serratia and Yersinia. Broth EPS revealed flocculation activity more than 75% for Bacillus sp.7, Bacillus sp.4 and Bacillus sp.6, respectively. Flocculation activity higher than 75% was attained using very low concentrations of broth EPS (1.12-2.70 mg EPS/g SS).

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

More TT,Yan S,John RP,Tyagi RD,Surampalli RY

doi

10.1016/j.biortech.2012.06.103

subject

Has Abstract

pub_date

2012-10-01 00:00:00

pages

304-11

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(12)01017-6

journal_volume

121

pub_type

杂志文章

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