Document Detail

Screening of marine microalgae for bioremediation of cadmium-polluted seawater.
MedLine Citation:
PMID:  10412204     Owner:  NLM     Status:  MEDLINE    
Twenty four strains out of 191 marine microalgal strains exhibited cadmium (Cd) resistance. They were tested for their Cd removal ability in growth media containing 50 microM Cd. Six strains out of 19 green algae and one out of five cyanobacteria removed more than 10% of total Cd from the medium. The marine green alga Chlorella sp. NKG16014 showed the highest removal of Cd 48.7% of total. Cd removal by NKG16014 was further quantitatively evaluated by measuring the amount of cell adsorption and intracellular accumulation. After 12 days incubation, 67% of the removed Cd was accumulated intracellularly and 25% of the Cd removed was adsorbed on the algal cell surface. The maximum Cd adsorption (qmax) was estimated to be 37.0 mg Cd (g dry cells)-1 using the Langmuir sorption model. The Cd removal by freeze-dried NKG16014 cells was also determined. Cd was more quickly adsorbed by dried cells than that by living cells, with a qmax of 91.0 mg Cd (g dry cells)-1.
T Matsunaga; H Takeyama; T Nakao; A Yamazawa
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of biotechnology     Volume:  70     ISSN:  0168-1656     ISO Abbreviation:  J. Biotechnol.     Publication Date:  1999 Apr 
Date Detail:
Created Date:  1999-08-12     Completed Date:  1999-08-12     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8411927     Medline TA:  J Biotechnol     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  33-8     Citation Subset:  IM    
Department of Biotechnology, Tokyo University of Agriculture and Technology, Japan.
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MeSH Terms
Biodegradation, Environmental
Cadmium / metabolism*
Chlorella / metabolism*
Water Pollutants, Chemical / metabolism*
Reg. No./Substance:
0/Water Pollutants, Chemical; 7440-43-9/Cadmium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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