Decolorization and detoxification of real textile dyes wastewater using free and immobilized indigenous bacterial consortium in semi-pilot scale
El-Liethy, M., Hemdan, B., Hellal, M., Kamal, K., abou hammad, A., Aboutaleb, E., El Nahrawy, A., El-Taweel, G. (2024). Decolorization and detoxification of real textile dyes wastewater using free and immobilized indigenous bacterial consortium in semi-pilot scale. EKB Journal Management System, 67(1), 353-370. doi: 10.21608/ejchem.2023.215695.8094
Mohamed Azab El-Liethy; Bahaa Hemdan; Mohammed Saad Hellal; Kholod Hamdy Kamal; Ali Belal abou hammad; Enas Aboutaleb; Amany M. El Nahrawy; Gamila E. El-Taweel. "Decolorization and detoxification of real textile dyes wastewater using free and immobilized indigenous bacterial consortium in semi-pilot scale". EKB Journal Management System, 67, 1, 2024, 353-370. doi: 10.21608/ejchem.2023.215695.8094
El-Liethy, M., Hemdan, B., Hellal, M., Kamal, K., abou hammad, A., Aboutaleb, E., El Nahrawy, A., El-Taweel, G. (2024). 'Decolorization and detoxification of real textile dyes wastewater using free and immobilized indigenous bacterial consortium in semi-pilot scale', EKB Journal Management System, 67(1), pp. 353-370. doi: 10.21608/ejchem.2023.215695.8094
El-Liethy, M., Hemdan, B., Hellal, M., Kamal, K., abou hammad, A., Aboutaleb, E., El Nahrawy, A., El-Taweel, G. Decolorization and detoxification of real textile dyes wastewater using free and immobilized indigenous bacterial consortium in semi-pilot scale. EKB Journal Management System, 2024; 67(1): 353-370. doi: 10.21608/ejchem.2023.215695.8094

Decolorization and detoxification of real textile dyes wastewater using free and immobilized indigenous bacterial consortium in semi-pilot scale

Egyptian Journal of Chemistry
Volume 67, Issue 1, January 2024, Page 353-370  XML PDF (940.76 K)
Document Type: Original Article
DOI: 10.21608/ejchem.2023.215695.8094
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Authors
Mohamed Azab El-Liethy email orcid 1; Bahaa Hemdan1; Mohammed Saad Hellalorcid 1; Kholod Hamdy Kamal1; Ali Belal abou hammadorcid 2; Enas Aboutaleborcid 1; Amany M. El Nahrawyorcid 2; Gamila E. El-Taweel1
1Water Pollution Research Department, National Research Centre, Dokki, 12622, Giza, Egypt
2Solid State Physics Department, Physics Research Institute, National Research Centre, Dokki, 12622, Giza, Egypt
Abstract
Most of the liquid and solid effluents from textile industries are treated by physical and chemical methods such as flocculation, adsorption, filtration and oxidation. Most of the physical methods, however, simply accumulate and concentrate dyes and create solid wastes, and this problem of disposal still exists. Therefore, the main aim of this study was to evaluate the recently developed semi-pilot system using combined biological and nanocomposites treatment for decolorizing and degrading dyes from real textile effluent. Moreover, biodegradation of synthetic and real wastewater using bacteria have been used on bench scale to optimizing the biodegradation conditions. After optimizing the condition, semi-pilot plant was operated by three mixed biocarriers, free and immobilized mixed consortium, and bio-sorption using composite nanoparticles. The obtained results showed that, a good biodegradation and decolorization process where, following all phases and semi-pilot system effluents, all measured parameters significantly decreased. Moreover, the removal percent of chemical oxygen demand (COD), biological oxygen demand (BOD) and color of the effluent of real textile wastewater in semi-pilot system under anaerobic condition reached to 67, 78.71 and 87.80%, respectively. While, the removal percent of COD, BOD and color reached to 72.35, 67.71 and 90.81% under aerobic condition, respectively. The toxicity results indicated that the treated effluent of real wastewater in the semi-pilot system was nontoxic (EC50≥100) under both aerobic and anaerobic condition.
Keywords
textile wastewater; decolorization; detoxification; biological treatment; nano-composite
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