title: Cr(VI) reduction by Pseudomonas aeruginosa immobilized in a polyvinyl alcohol/sodium alginate matrix containing multi-walled carbon nanotubes.
abstract: Pseudomonas aeruginosa (P. aeruginosa) was immobilized with polyvinyl alcohol (PVA), sodium alginate and multiwalled carbon nanotubes (MCNTs). After immobilization, the beads were subjected to freeze-thawing to enhance mechanical strength. When exposed to 80 mg/L Cr(VI), the immobilized bacteria were able to reduce 50% of them in 84 h, however the free cells were deactivated at this concentration. The beads were used to reduce 50 mg/L Cr(VI) for nine times, with the reduction efficiency above 90% in the first five times and 65% in the end.
authors.affiliation: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.
authors.forename: Ya
authors.initials: Y
authors.lastname: Pang
authors.forename: Guang-Ming
authors.initials: GM
authors.lastname: Zeng
authors.forename: Lin
authors.initials: L
authors.lastname: Tang
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhang
authors.forename: Yuan-Yuan
authors.initials: YY
authors.lastname: Liu
authors.forename: Xiao-Xia
authors.initials: XX
authors.lastname: Lei
authors.forename: Meng-Shi
authors.initials: MS
authors.lastname: Wu
authors.forename: Zhen
authors.initials: Z
authors.lastname: Li
authors.forename: Can
authors.initials: C
authors.lastname: Liu
mesh_terms: D000464:Alginates / Q000494:pharmacology*; D001673:Biodegradation, Environmental / Q000187:drug effects; D018914:Cells, Immobilized / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D002857:Chromium / Q000378:metabolism* / Q000494:pharmacology; D020723:Glucuronic Acid / Q000494:pharmacology; D006603:Hexuronic Acids / Q000494:pharmacology; D008863:Microspheres; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010084:Oxidation-Reduction / Q000187:drug effects; D011142:Polyvinyl Alcohol / Q000494:pharmacology*; D011550:Pseudomonas aeruginosa / Q000166:cytology / Q000187:drug effects / Q000378:metabolism*; D013997:Time Factors
chemical_list: D000464:Alginates; D006603:Hexuronic Acids; D037742:Nanotubes, Carbon; D002857:Chromium; D020723:Glucuronic Acid; D011142:Polyvinyl Alcohol