Results 241 to 250 of about 23,325 (291)

Decolorization of Azo Dyes in Bioelectrochemical Systems

Environmental Science & Technology, 2009
Azo dyes are ubiquitously used in the textile industry. These dyes need to be removed from the effluent prior to discharge to sewage due to their intense color and toxicity. In this study we investigated the use of a bioelectrochemical system (BES) to abioticlly cathodic decolorization of a model azo dye, Acid Orange 7 (AO7), where the process was ...
Mu, Yang, Rabaey, Korneel, Rozendal, Rene A., Yuan, Zhiguo, Keller, Jurg   +4 more
openaire   +3 more sources

Exploring new strains of dye-decolorizing bacteria

Journal of Bioscience and Bioengineering, 2012
This study unveiled a new strategy to explore new indigenous strains with excellent decolorization capabilities from freshwaters and seawaters. Two new bacterial decolorizers DX2b and SH7b, which have the capability to decolorize textile dyes, were isolated from Cross-Strait Taiwan and China. According to PCR-augmented 16S rRNA gene analyses for strain
Han, Jing-Long, Ng, I-Son, Wang, Yanni, Zheng, Xuesong, Chen, Wen-Ming, Hsueh, Chung-Chuan, Liu, Shi-Qi, Chen, Bor-Yann   +7 more
openaire   +3 more sources

Microbial agents for decolorization of dye wastewater

Biotechnology Advances, 1991
Colored dye wastewater presents a formidable task for biological treatment. Depending on how it is generated, wide pH spans and high salt concentrations such as chloride ion often add to the difficulties. Systematic screening for dye decolorizing and/or degrading bioagents from soil and water samples discovered fungi which show dramatic color removal ...
D G, Mou, K K, Lim, H P, Shen
openaire   +2 more sources

Decolorization of azo dyes by Geobacter metallireducens

Applied Microbiology and Biotechnology, 2012
Geobacter metallireducens was found to be capable of decolorizing several azo dyes with different structures to various extents. Pyruvate, ethanol, acetate, propionate, and benzoate could support 66.3 ± 2.6-93.7 ± 2.1 % decolorization of 0.1 mM acid red 27 (AR27) in 40 h.
Guangfei, Liu, Jiti, Zhou, Congcong, Chen, Jing, Wang, Ruofei, Jin, Hong, Lv   +5 more
openaire   +2 more sources

Isolation of Dye Decolorization Bacteria and the Study on the Conditions of Dyes Decolorization

2010 4th International Conference on Bioinformatics and Biomedical Engineering, 2010
A bacterium which had the ability of decoloration on Malachite Green was isolated from Zhenjiang printworks and was identified as Pseudomonas aeruginosa. The effects of concentration of the dye concentration、cultural time、cultural temperature and initial pH of cultural medium on the efficiency of decoloration were investigated. The result
Huixing Liang, Aihui Chen, Xin Chen, Zhaoxia Li, Cheng Ding   +4 more
openaire   +1 more source

Microbial Decolorization of Triphenylmethane Dyes

2014
Synthetic dyes belong to important class of organic compounds extensively used in textile, paper printing, color photography, leather, plastics, food, cosmetic, and pharmaceutical industries (Ali, Water Air Soil Poll 213:251–273, 2010; Rauf and Ashraf, Chem Eng J 209:520–530, 2012).
Anna Jasińska, Katarzyna Paraszkiewicz, Mirosława Słaba, Jerzy Długoński   +3 more
openaire   +1 more source

Fungal decolorization of dye wastewaters: a review

Bioresource Technology, 2001
In recent years, there has been an intensive research on fungal decolorization of dye wastewater. It is becoming a promising alternative to replace or supplement present treatment processes. This paper examines various fungi, living or dead cells, which are capable of decolorizing dye wastewaters; discusses various mechanisms involved; reports some ...
Y, Fu, T, Viraraghavan
openaire   +2 more sources

Bacterial Decolorization and Degradation of Azo Dyes

International Biodeterioration & Biodegradation, 2007
Color has always been a part of human life since long. All colorants, until the middle of nineteenth century, were of natural origin. Manufacturing of synthetic dyes started in 1856 and the first compound to be synthesized was aniline purple. By the beginning of the twenteeth century, synthetic dyes almost completely replaced natural compounds ...
Anjali Pandey, Poonam Singh, Leela Iyengar   +2 more
openaire   +1 more source

The multihued palette of dye-decolorizing peroxidases

Archives of Biochemistry and Biophysics, 2015
Dye-decolorizing peroxidases (DyPs; EC 1.11.1.19) are heme enzymes that comprise a family of the dimeric α+β barrel structural superfamily of proteins. The first DyP, identified relatively recently in the fungus Bjerkandera adusta, was characterized for its ability to catalyze the decolorization of anthraquinone-based industrial dyes. These enzymes are
Rahul Singh, Lindsay D. Eltis
openaire   +2 more sources

Decolorization of azo dyes by Rhodobacter sphaeroides

Biotechnology Letters, 2003
Rhodobacter sphaeroides AS1.1737 decolorized more than 90% of several azo dyes (200 mg dyes l(-1)) in 24 h. The optimal culture conditions were: anaerobic illumination (1990 1x), peptone as carbon source, temperature 35-40 degrees C and pH 7-8. Intracellular crude enzyme from this strain had azoreductase activity, optimized temperature as 45-50 degrees
Zhi-yong, Song, Ji-ti, Zhou, Jing, Wang, Bin, Yan, Cui-hong, Du   +4 more
openaire   +2 more sources