title: Production of novel microbial flocculants by Klebsiella sp. TG-1 using waste residue from the food industry and its use in defecating the trona suspension.
abstract: A microbial-flocculants-producing (MBF-producing) bacterium, named TG-1, was isolated from waste water of a starch factory, and identified as Klebsiella sp. TG-1. The microbial flocculants (MBF) produced by TG-1, named as MBF-TG-1, was applied to defecating the strong basic trona suspension in the trona industry. After optimizing medium and culturing conditions with single-factor and orthogonal designs, the highest flocculation rate of 86.9% was achieved. Chemical analysis showed that the purified microbial flocculants (MBF-TG-1) was mainly composed of polysaccharides (84.6%), with a small amount of protein or amino acid (11.1%). Bridging mechanism was supposed as the main flocculation mechanism by analyzing the flocculation process and the biochemistry properties of MBF-TG-1. The high flocculation rate (84%) was also achieved with a low-cost medium (the solid residue of tofu production from food industry).
authors.affiliation: School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, PR China. hgxyliuzy@hotmail.com
authors.forename: Zhan-Ying
authors.initials: ZY
authors.lastname: Liu
authors.forename: Zhi-Quan
authors.initials: ZQ
authors.lastname: Hu
authors.forename: Tao
authors.initials: T
authors.lastname: Wang
authors.forename: Yan-Ying
authors.initials: YY
authors.lastname: Chen
authors.forename: Jianbin
authors.initials: J
authors.lastname: Zhang
authors.forename: Jing-Ran
authors.initials: JR
authors.lastname: Yu
authors.forename: Tong
authors.initials: T
authors.lastname: Zhang
authors.forename: Yong-Feng
authors.initials: YF
authors.lastname: Zhang
authors.forename: Yong-Li
authors.initials: YL
authors.lastname: Li
mesh_terms: D000596:Amino Acids / Q000378:metabolism; D001639:Bicarbonates / Q000737:chemistry*; D001673:Biodegradation, Environmental / Q000187:drug effects; D002244:Carbon / Q000494:pharmacology; D003365:Costs and Cost Analysis; D003470:Culture Media / Q000494:pharmacology; D005427:Flocculation / Q000187:drug effects; D019649:Food Industry; D006860:Hydrogen Bonding; D007220:Industrial Waste; D007709:Klebsiella / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism*; D009584:Nitrogen / Q000494:pharmacology; D013535:Suspensions; D013696:Temperature; D023382:Toxicity Tests, Acute
chemical_list: D000596:Amino Acids; D001639:Bicarbonates; D003470:Culture Media; D007220:Industrial Waste; D013535:Suspensions; D002244:Carbon; D009584:Nitrogen; C029065:Magadi soda