Zinc chloride as a coagulant for textile dyes and treatment of generated dye sludge under the solid state fermentation: Hybrid treatment strategy. (January 2015)

• Record Type: Journal Article
• Authors: Kadam, Avinash A.; Lade, Harshad S.; Lee, Dae Sung; Govindwar, Sanjay P.
• Is Part Of: Bioresource technology. Volume 176(2015)
• Page Start: 38
• Page End: 46
• Publication Date: 2015-01
• Subjects: Hybrid technology combining physicochemical and biological process -- Solid state fermentation -- Coagulation of textile dyes -- Decolorization -- Composting; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2014.10.137
• Languages: English
• ISSNs: 0960-8524

Abstract

Abstract : Graphical abstract: Highlights: Novel coagulant ZnCl2 for textile wastewater treatment. Coagulation was studied using UV–vis, FTIR, FE-SEM EDX and FE-TEM. Dye sludge decolorized under SSF solve one of major problem of coagulation process. Scale up to pilot scale coagulation reactor and composting bioreactor. Effective toxicity removal by combining both coagulation and SSF. Abstract: Dye sludge generation is major drawback of coagulation process. Efficient hybrid technology by combining coagulation and solid state fermentation (SSF) has capacity to solve generated dye sludge problem. Coagulation of 100 mg/L Reactive Red 120 (RR120) using ZnCl2 showed 99% color removal. Mixture of textile dyes (MTD) and textile wastewater (TW) showed 96% and 98% ADMI (American Dye Manufacturing Institute) removal after coagulation by ZnCl2 . 92% and 94% ADMI removal from MTD and TW dye sludge and 96% decolorization of RR120 sludge was observed respectively by developed microbial consortium (DCM) in 72 h under SSF. Scale up of coagulation process by coagulation reactor (CR) having 50 L capacity operated for 30 min/cycle. CR showed average 94% ADMI removal from TW in 10 successive cycles. Scale up of SSF composting bioreactor (CB) showed complete dye removal from dye sludge obtained from CR (500 L of TW) in 30 days.