Journal
BIORESOURCE TECHNOLOGY
Volume 102, Issue 22, Pages 10733-10736Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.08.078
Keywords
Immobilized microorganism; MCNTs; Pseudomonas aeruginosa; Cr(VI) reduction
Funding
- Fundamental Research Funds for the Central Universities
- Hunan University
- National Natural Science Foundation of China [50608029, 50978088]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT0719]
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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. (C) 2011 Elsevier Ltd. All rights reserved.
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