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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/4160

Title: Wet Oxidation-An Option for Enhancing Biodegradability of Leachate Derived From Municipal Solid Waste (MSW) Landfill
Authors: GARG, A
MISHRA, A
Keywords: paper-mill effluent
air oxidation
phenol
water
pretreatment
degradation
catalysts
radicals
kinetics
pulp
Issue Date: 2010
Publisher: AMER CHEMICAL SOC
Citation: INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 49(12), 5575-5582
Abstract: The present study reports the treatment of municipal solid waste (MSW) derived landfill leachate (initial pH = 7.82 and chemical oxygen demand (COD) = 6400 mg L(-1)) using catalytic wet oxidation (WO) process. The reaction was performed under moderate conditions (110-150 degrees C temperature and 0.7 MPa total pressures) in the presence of a CuSO(4) catalyst. The effect of the promoter (Na(2)SO(3)) was also seen on the COD removal. The results were compared with that obtained for Fe(2+) and H(2)O(2) combination. Among all tested combinations, (CuSO(4) + Na(2)SO(3) + air) exhibited the best performance with similar to 90% COD reduction at 150 degrees C temperature and 0.7 MPa pressures. Under these conditions, the biodegradability of the treated effluent was improved to 0.66 (from an initial value of 0.38). The average oxidation state of carbon (AOSC) value and Fourier transform infrared (FTIR) spectroscopy confirmed the presence of carboxylic acids in the treated effluent.
URI: http://dx.doi.org/10.1021/ie100003q
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4160
http://hdl.handle.net/10054/4160
ISSN: 0888-5885
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