Radia Khatib, Naseem F. Usmani, Farhat R. Malik, S.Shahid Husain
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Chemical composition of putrescible vegetable matter in municipal waste from Karachi—a case study
During studies on ‘Refuse Recycling Processes in Karachi’ for the United Nations Centre for Human Settlement (UNCHS-Habitat), a chemical evaluation of organic putrescible matter, a major component of recyclable materials, was carried out. The average putrescible matter (after sorting) had pH 6·1; moisture 39·5%; organic matter 56%; carbon 34%; nitrogen 1·2%; and C/N 28. These figures are in conformity with the optimum values needed for aerobic composting and hence this portion of refuse is a suitable material for bioconversion.
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