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Titolo:
Microbial decolorization of azo dyes by Proteus mirabilis
Autore:
Chen, KC; Huang, WT; Wu, JY; Houng, JY;
Indirizzi:
Natl Tsing Hua Univ, Dept Chem Engn, Hsinchu, Taiwan Natl Tsing Hua Univ Hsinchu Taiwan niv, Dept Chem Engn, Hsinchu, Taiwan
Titolo Testata:
JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY
fascicolo: 1, volume: 23, anno: 1999,
pagine: 686 - 690
SICI:
1367-5435(199907)23:1<686:MDOADB>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHANEROCHAETE-CHRYSOSPORIUM; TRIPHENYLMETHANE DYES; REDUCTION; DEGRADATION; TOXICITY;
Keywords:
azo dyes; biodegradation; biosorption; enzymatic reduction; Proteus mirabilis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Chen, KC Natl Tsing Hua Univ, Dept Chem Engn, Hsinchu, Taiwan Natl Tsing Hua Univ Hsinchu Taiwan Chem Engn, Hsinchu, Taiwan
Citazione:
K.C. Chen et al., "Microbial decolorization of azo dyes by Proteus mirabilis", J IND MIC B, 23(1), 1999, pp. 686-690

Abstract

A bacterium identified as Proteus mirabilis was isolated from acclimated sludge from a dyeing wastewater treatment plant, This strain rapidly decolorized a deep red azo dye solution (RED RBN), Features of the decolorizing process related to biodegradation and biosorption were also studied. AlthoughP. mirabilis displayed good growth in shake culture, color removal was best in anoxic static cultures. For color removal, the optimal pH and temperature were 6.5-7.5 and 30-35 degrees C, respectively, The organism exhibited a remarkable color removal capability, even at a high concentration of azo dye. More than 95% of azo dye was reduced within 20 h at a dye concentration of 1.0 g L-1. Decolorization appears to proceed primarily by enzymatic reduction associated with a minor portion, 13-17%, of biosorption to inactivated microbial cells.

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Documento generato il 15/07/20 alle ore 03:13:37