Research Article
Influence of Sewage Sludge and Leachate on Biochemical Methane Potential of Waste Biomass
| Kanchan Wakadikar1, Avick Sil1, Sunil Kumar2*, Rakesh Kumar1and Ackmez Mudhoo3 | |
| 1National Environmental Engineering Research Institute (NEERI), Council of Scientific and industrial Research (CSIR), Mumbai, India | |
| 2Kolkata Zonal Laboratory, National Environmental Engineering Research Institute (NEERI), Council of Scientific and Industrial Research (CSIR), I-8, Sector “C”, East Kolkata, EM Bypass, Kolkata, 700 107, India | |
| 3Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Mauritius, Réduit, Mauritius | |
| Corresponding Author : | Sunil Kumar Kolkata Zonal Laboratory National Environmental Engineering Research Institute (NEERI) Council of Scientific and Industrial Research (CSIR) I-8, Sector “C”, East Kolkata, EM Bypass Kolkata, 700107, India Tel: + 91-990-363-9925 Fax: +91-22-24936635 E-mail: sunil.kumar730@yahoo.com, sunil_neeri@yahoo.co.in |
| Received May 13, 2012; Accepted June 15, 2012; Published June 18, 2012 | |
| Citation: Wakadikar K, Sil A, Kumar S, Kumar R, Mudhoo A (2012) Influence of Sewage Sludge and Leachate on Biochemical Methane Potential of Waste Biomass. J Bioremed Biodeg S8:002. doi:10.4172/2155-6199.S8-002 | |
| Copyright: © 2012 Wakadikar K, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. | |
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Abstract
In this study, biochemical methane potential assays of mixed municipal solid wastes and other types of waste such as, cellulosic, vegetable and food wastes were performed over 60 days with two different volatile solid amendments, namely domestic sewage sludge and leachate. With sewage sludge, cumulative methane (CH4) production from cellulose, food and vegetable wastes and municipal solid wastes varied from 0.23-1.51, 0.25-0.92, 0.14-0.55 and 0.07-0.21 L/g volatile solids, respectively. With leachate, the corresponding cumulative CH4 generations were 0.93-3.50, 0.97-1.81, 0.24-1.05 and 0.10-0.57 L/g VS, respectively. The individual cumulative CH4 production data fitted very well with the modified Gompertz equation and maximum methane production rates, methane production potential and lag phase time were estimated using the SigmaPlot® 11 software and this was validated by the algorithms of the Grofit software. Results showed that cumulative methane production with leachate were twice as high as with sewage slsudge. The cumulative CH4 production after 60 days varied in the order cellulose wastes>food wastes>vegetable wastes> municipal solid wastes.
