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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2785
Title: Treatment of dairy wastewater by inorganic coagulants: Parametric and disposal studies
Authors: Kushwaha J.P.
Chandra Srivastava V.
Mall I.D.
Published in: Water Research
Abstract: Present study reports treatment of simulated dairy wastewater (SDW) by inorganic coagulants such as poly aluminum chloride (PAC), ferrous sulphate (FeSO4) and potash alum (KAl(SO4)2·12H2O). Batch coagulation experiments were conducted to evaluate the influence of initial pH (pHi: 5-10) and coagulant dosage (m: 100-5000 mg/L) on chemical oxygen demand (COD) removal from SDW. Residual COD and system pH were observed as function of time. Optimum pHi (pHi,op) was found to be 8.0 for all the three coagulants. Optimum m (mop) was found to be 300, 800 and 500 mg/L for PAC, FeSO4 and KAl(SO4)2·12H2O, respectively, giving 69.2, 66.5 and 63.8% COD removal efficiency in 30 min. Heating values of the sludge generated by the coagulants PAC, FeSO4 and KAl(SO4)2·12H2O were found to be 20.7, 29.6 and 17.3 MJ/kg, respectively. © 2010 Elsevier Ltd.
Citation: Water Research (2010), 44(20): 5867-5874
URI: https://doi.org/10.1016/j.watres.2010.07.001
http://repository.iitr.ac.in/handle/123456789/2785
Issue Date: 2010
Publisher: Elsevier Ltd
Keywords: Coagulation
Dairy wastewater
Disposal
Ferrous sulphate
PAC
Potash alum
ISSN: 431354
Author Scopus IDs: 36087515800
35565811700
55664368900
Author Affiliations: Kushwaha, J.P., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
Chandra Srivastava, V., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
Mall, I.D., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
Corresponding Author: Mall, I.D.; Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India; email: id_mall2000@yahoo.co.in
Appears in Collections:Journal Publications [CH]

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