Bio-remediation of colored industrial wastewaters by the white-rot fungi Phanerochaete chrysosporium and Pleurotus ostreatus and their enzymes

被引:101
作者
Faraco, V. [1 ,2 ]
Pezzella, C. [1 ]
Miele, A. [1 ]
Giardina, P. [1 ]
Sannia, G. [1 ]
机构
[1] Univ Naples Federico 2, Dept Organ Chem & Biochem, I-80126 Naples, Italy
[2] Univ Naples Federico 2, Sch Biotechnol Sci, I-80126 Naples, Italy
关键词
Textile dyes decolourization; Industrial effluent treatment; Ligninolytic fungi; Laccase; Manganese-peroxidase; Color industry; BLUE-R DECOLORIZATION; REACTIVE AZO DYES; TEXTILE DYES; MANGANESE PEROXIDASE; IMMOBILIZED LACCASE; EFFLUENT; PURIFICATION; DEGRADATION; MINERALIZATION; STREPTOMYCES;
D O I
10.1007/s10532-008-9214-2
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
The effect of Phanerochaete chrysosporium and Pleurotus ostreatus whole cells and their ligninolytic enzymes on models of colored industrial wastewaters was evaluated. Models of acid, direct and reactive dye wastewaters from textile industry have been defined on the basis of discharged amounts, economic relevance and representativeness of chemical structures of the contained dyes. Phanerochaete chrysosporium provided an effective decolourization of direct dye wastewater model, reaching about 45% decolourization in only 1 day of treatment, and about 90% decolourization within 7 days, whilst P. ostreatus was able to decolorize and detoxify acid dye wastewater model providing 40% decolourization in only 1 day, and 60% in 7 days. P. ostreatus growth conditions that induce laccase production (up to 130,000 U/l) were identified, and extra-cellular enzyme mixtures, with known laccase isoenzyme composition, were produced and used in wastewater models decolourization. The mixtures decolorized and detoxified the acid dye wastewater model, suggesting laccases as the main agents of wastewater decolourization by P. ostreatus. A laccase mixture was immobilized by entrapment in Cu-alginate beads, and the immobilized enzymes were shown to be effective in batch decolourization, even after 15 stepwise additions of dye for a total exposure of about 1 month.
引用
收藏
页码:209 / 220
页数:12
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