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РЖ ВИНИТИ 34 (BI12) 95.10-04Б2.261

Chang, Jo-Shu.
Bisorption of Mercury by the inactivated cells of Pseudomonas aeruginosa PU21 (Rip64) [Text] / Jo-Shu Chang, Juan Hong // Biotechnol. and Bioeng. - 1994. - Vol. 44, N 8. - P999-1006 . - ISSN 0006-3592
Перевод заглавия: Биосорбция ртути инактивированными клетками Pseudomonas aeruginosa PU21 (Rip 64)
Аннотация: Biomass of a mercury-resistant strain Pseudomonas aeruginosa PU21 (Rip64) and hydrogen-form cation exchange resin (AG 50W-X8) were investigated for their ability to adsorb mercury. The maximum adsorption capacity was approximately 180 mg Hg/g dry cell in deionized water and 400 mg Hg/g dry cell in sodium phosphate solution at pH 7.4, higher than the maximum mercury uptake capacity in the cation exchange resin (100 mg Hg/g dry resin in deionized water). The mercury selectivity of the biomass over sodium ions was evaluated when 50 mM and 150 mM of Na{+} were present. Biosorption of mercury was also examined in sodium phosphate solution and phosphate-buffered saline solution (pH 7.0), containing 50 mM and 150 mM of Na{+}, respectively. It was found that the presence of Na{+} did not severely affect the biosorption of Hg{2+}, indicating a high mercury selectivity of the biomass over sodium concentrations. The mercury biosorption was most favorable in solium phosphate solution (pH 7.4), with a more than fwofold increase in the maximum mercury uptake capacity. The pH was found to affect the adsorption of Hg{2+} by the biomass and the optimal pH value was approximately 7.4. The adsorption of mercury on the biomass and the ion exchange resin appeared to follow the Langmuir or Freundlich adsorption isotherms. США, Dept Chem. and Biochem. Eng., Univ. California, Irvine, CA 92717

ГРНТИ	34.27.23

ВИНИТИ 341.27.23.15
Рубрики: ОХРАНА ОКРУЖАЮЩЕЙ СРЕДЫ
МЕТАЛЛЫ
ТЯЖЕЛЫЕ МЕТАЛЛЫ
БИОСОРБЦИЯ РТУТИ
PSEUDOMONAS AERUGINOSA
ШТАММ PU21 (RIP 64)

Доп.точки доступа:
Hong, Juan

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