Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
FACTORS AFFECTING HEXAVALENT CHROMIUM REDUCTION IN PURE CULTURES OF BACTERIA
Autore:
WANG YT; XIAO CS;
Indirizzi:
UNIV KENTUCKY,DEPT CIVIL ENGN LEXINGTON KY 40506
Titolo Testata:
Water research
fascicolo: 11, volume: 29, anno: 1995,
pagine: 2467 - 2474
SICI:
0043-1354(1995)29:11<2467:FAHCRI>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENTEROBACTER-CLOACAE STRAIN; ENZYMATIC REDUCTION; CHROMATE REDUCTION; HO1;
Keywords:
CHROMIUM; ENZYME; REDUCTION; BACTERIA; ELECTRON DONOR; SULFATE; NITRATE; REDOX POTENTIAL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
Y.T. Wang e C.S. Xiao, "FACTORS AFFECTING HEXAVALENT CHROMIUM REDUCTION IN PURE CULTURES OF BACTERIA", Water research, 29(11), 1995, pp. 2467-2474

Abstract

Batch studies were conducted to evaluate the effect of environmental factors on the rate of Cr(VI) reduction by two organisms, Bacillus sp. (a new isolate), and Pseudomonas fluorescens LB 300. Both organisms utilized glucose for Cr(VI) reduction under aerobic conditions. Higher Cr(VI) reduction rates were obtained with higher initial cell concentrations, but the specific rate (normalized against initial cell concentration), was higher at lower initial cell concentrations. The rate of Cr(VI) reduction by Bacillus sp. increased with initial Cr(VI) concentrations ranging from 20 to 70 mg/l and decreased at higher concentrations. The rate of Cr(VI) reduction by LB 300 steadily increased with the initial Cr(VI) concentrations over the entire test range of 20-100 mg/l Cr(VI). Further studies with the new isolate, Bacillus sp., showedthat neither sulfate nor nitrate affected Cr(VI) reduction. Also no correlations were found between the rate of Cr(VI) reduction and the redox potential of culture media. Experiments with cell-free extracts ofBacillus sp. indicated that soluble type of enzymes were responsible for Cr(VI) reduction in this organism.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 05:33:33