In-vessel composting of organic fraction of municipal solid waste with sugar industry filter cake and assessment of Phytotoxicity

摘要

The compost obtained from composting of organic fraction of Municipal Solid waste, Sugar industry filter cake and saw dust using different initial mix ratios (1:3, 1:6, 1:9) was used to evaluate phytotoxicity of green gram (Vigna radiata) using seed germination method. The tests were repeated for compost obtained from organic fraction of MSW and saw dust without the addition of sludge. The control germination test was carried out using deionized water. The results showed that composting generally reduced the phytotoxicity of the mixtures. The germination index was highest in mix ratio of 1:6 in the compost obtained from the addition of sugar industry filter cake and germination index was highest in mix ratio of 1:6 in the compost obtained without the addition of sludge. The germination percentage, Germination index and Vigor index values were relatively higher in the compost obtained with the addition of sugar industry filter cake. The maximum vigor index was obtained in the mix ratio of 1:6 from the compost obtained with the addition of sludge.