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Evaluation of Microbial Stripping of Dyed Cotton Fabric

Thesis Info

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Author

Chatha, Shahzad Ali Shahid

Program

PhD

Institute

University of Agriculture

City

Faisalabad

Province

Punjab

Country

Pakistan

Thesis Completing Year

2011

Thesis Completion Status

Completed

Subject

Chemistry

Language

English

Link

http://prr.hec.gov.pk/jspui/handle/123456789/776

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726127405

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Chemical color stripping processes not only reduces the quality of fabric but also induces an extensive attention to expensive treatments and the safe disposal of persistent and toxic chemical wastes. This research project was planned to investigate the potential of the biochemical stripping of cotton fabric that had been dyed with a C.I Reactive Black B dye to a bluish black/grey shade using five indigenous strains of white rot fungi including Pleurotus ostreatsus IBL-02, Phanerochaete chrysosporium IBL-03, Coriolus versicolor IBL-04, G. lucidum IBL-05, and Schizophyllum commune IBL-06 in a Kirk''s basal salts medium. The color stripping was measured in terms of color strength (K/S value), before and after treatment. Among the five strains of WRF, G. lucidum IBL-05 showed best stripping in 15 days of incubation under continuous shaking conditions (120 rpm) at pH 4.5 and 35 0C. The biochemical stripping process was optimized by studying the effects of temperature, pH, additional carbon and nitrogen sources, low molecular weight mediators and metal ions on the synthesis of ligninolytic enzymes and the stripping of dyed cotton fabric by G. lucidum IBL-05. The addition of carbon based sources (glucose, starch, glycerol, wheat bran) and nitrogen containing additives (corn steep liquor, maize gluten 60%, yeast extract, peptone), mediators of ligninolytic enzymes (veratryl alcohol, MnSO4, Guaicol, ABTS and H2O2) and metal salts (CuSO4, FeSO4, ZnSO4, Cd (NO3)2, CaCl2) enhanced the formation of ligninolytic enymes by G. lucidum IBL-05 and fabric color stripping. Maximum color stripping (90.59%) achieved by use of the maximum activities of LiP (712 U/mL), MnP (422U/mL) and laccase (82U/mL) was achieved after 15 days of incubation at pH 4 and 350C using Kirk''s basal nutrient medium supplemented with wheat bran (1g/100ml) as a carbon source, and peptone (0.2g/100mL) as a nitrogen source, with MnSO4 as a mediator and ZnSO4 as a metal salt. The biological stripping was superior to the chemical stripping process. The effluent generated in chemical stripping was highly polluted as compared to that obtained from the biological process in terms of pH, TSS, DO, BOD, COD and TOC. Biological color stripping is gentle and does not excessively deteriorate the fabric quality or reduce the fabric weight.
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منھج القرآن الكريم في تربية الشباب المسلم

In the present age, youth occupy an important position and can play a very important role in reforming and improving the world conditions. In Quran several methods are suggested for character building of youth for example following “Uswa-e-Hasna” and by preaching and motivation of youth the fear Allah, the crated in their heard for reforming them. In some cases, the punishment can also reformed of youth. Youth is an important entity of any human society. Particularly in an Islamic society, youth has great significance. Youth is considered as a junction of past, present and future. The role of young generation cannot be neglected in the building of character, changes in circumstances and development of society. Youth should play a positive and effective role against various evils, which are prevalent in human society. What can be the religious social, political, ethical and educational duties of the Muslim? How can they play their role in reformation of society? How can they be bright stars of their country by fulfilling their duties? How can the whole humanity and particularly Islamic Ummah get benefits from their youth? The answers to these questions are central idea and theme of this article, generally in the light of Islam and particularly in the light of seerah-un-nabwiyia. In following lines, it has been tried to impart feelings of high self-esteem in the young generation who have forgotten it. It is an effort to motivate the youth for practical actions.

Stability Analysis of Self-Gravitating Collapsing Systems

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