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Swapan Das
Bidyut Bhattacharyya
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Bidyut Bhattacharyya
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Journal of Environment and Waste Management

Selective organic fraction of municipal solid waste degradation under controlled composting conditions

Swapan Das*, Bidyut Kr. Bhattacharyya

Department of Mechanical Engineering, Indian Institute of Engineering Science and Technology, Shibpur, Howrah-711103, India.

Accepted 05 April, 2017

Citation: Swapan D, Bidyut B (2017). Selective organic fraction of municipal solid waste degradation under controlled composting conditions. Journal of Environment and Waste Management 4(1): 156-163.

Copyright: © 2017 Das 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 cited.


Municipal solid waste (MSW) analysis in Kolkata indicates a presence of a high percentage of biodegradable organic matter (82%), acceptable moisture content (42%) and C/N ratio (32). These parameters are suitable for windrow composting. Because optimum moisture content for windrow composting is in the range of 40-50%. Windrow composting is a process that reduces the volume of the waste and produces a crumbly earthy smelling soil-like compost material. In the proposed scheme, we improve the quality of the compost material using selected organic material from the collected waste. In the practical implementation phased of proposed scheme, it has found all the quality parameters in compost samples within the acceptable limits set by international standard. The pH ranged between 6.7-8.2, organic matter 48%, moisture 23.02% and have an acceptable amount of plant nutrients C (16.03%), H (0.44%), N (1.26%), O2 (1.3%),  P (0.89%) and K (1.23%). The result would play an extremely important role in substantially reducing the burden of waste disposal, saving soil resources, controlling leachate and achieving malodorous gas reduction. Besides, it could also increase organic fertilizers in place of some chemical fertilizers and protect water resources.

Keywords: Organic matter, segregation, chemical characteristics, process control, quality of compost.