Title: Discarded Mushroom Residue as an Amendment for Aerobic Composting of Silkworm Waste
Abstract: In this study,mushroom residue was introduced as an amendment for aerobic composting of silkworm waste containing 10% mulberry twigs and 5% mulberry leaves to study organic fertilizer preparation technology using silkworm waste,a by-product in large quantity from silkworm rearing.Effects of various proportions of mushroom residue on composting conditions including temperature,pH value,moisture content and nutrient in aerobic composting of silkworm waste were investigated.The results showed that the highest composting temperature(64.4,66.0 and 68.3 ℃ respectively)could be reached at 6 h when the compost was consisted of 90% silkworm waste+10% mushroom residue(treatment 1),75% silkworm waste+25% mushroom residue(treatment 2),or 100% silkworm waste(control).However,the sustained duration of treatment 1 was relatively short.That of treatment 2 and the control lasted over 5 d,attaining the requirements of sanitary standard for non-hazardous treatment.The moisture content in treatment 1 and the control was relatively high,while moisture content and pH value of the compost were both lowered in treatment 2.From the nutrient point of view,the contents of phosphor and potassium were increased in all treatments.Yet the content of nitrogen declined in treatment 1 and the control(declined by 0.62% and 5.84% respectively).On contrary,because of dec-line of pH value in the compost,the content of nitrogen in treatment 2 was increased by 4.19%.Taken together,addition of 25% mushroom residue as amendment for aerobic composting of silkworm waste is favorable for improving composting conditions and increasing the content of nitrogen nutrient.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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Cited By Count: 1
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