alexa Co-composting of green waste and food waste at low C N ratio.
Environmental Sciences

Environmental Sciences

Journal of Bioremediation & Biodegradation

Author(s): Kumar M, Ou YL, Lin JG

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Abstract In this study, co-composting of food waste and green waste at low initial carbon to nitrogen (C/N) ratios was investigated using an in-vessel lab-scale composting reactor. The central composite design (CCD) and response surface method (RSM) were applied to obtain the optimal operating conditions over a range of preselected moisture contents (45-75\%) and C/N ratios (13.9-19.6). The results indicate that the optimal moisture content for co-composting of food waste and green waste is 60\%, and the substrate at a C/N ratio of 19.6 can be decomposed effectively to reduce 33\% of total volatile solids (TVS) in 12days. The TVS reduction can be modeled by using a second-order equation with a good fit. In addition, the compost passes the standard germination index of white radish seed indicating that it can be used as soil amendment. Copyright 2009 Elsevier Ltd. All rights reserved. This article was published in Waste Manag and referenced in Journal of Bioremediation & Biodegradation

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