کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9442402 | 1301821 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chemical and spectroscopic analysis of organic matter transformation during composting of sewage sludge and green plant waste
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
علوم زیست محیطی (عمومی)
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چکیده انگلیسی
When a mixture of thick sewage sludge (10 m3) and green waste (5 m3) was composted, the thermogenic phase (72 °C) improved the hygiene of the final product. After 135 days of composting, overall decomposition reached 60%, with percentage decomposition of hemicellulose, cellulose and lignin 70%, 61% and 37%, respectively. The C/N ratio was 12 and the NH4+/NO3â ratio was 0.24, illustrating the maturity of the final product. During composting, the humification process resulted in an increase in humic acids from 26 to 39.5 mg gâ1, and a decrease in fulvic acids from 38 to 18 mg gâ1. The different humification indices and the Fourrier transform infra-red (FTIR) spectroscopic analysis revealed an increase in aromaticity and degree of polycondensation, with a decrease in aliphatic groups and a reduction in the easily assimilated peptide and carbohydrate components. The germination index for both lettuce (Lactuca sativa) and turnip seed (Brassica rapa) was 98% after 135 days of composting, showing that the final compost was not phytotoxic.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Biodeterioration & Biodegradation - Volume 56, Issue 2, September 2005, Pages 101-108
Journal: International Biodeterioration & Biodegradation - Volume 56, Issue 2, September 2005, Pages 101-108
نویسندگان
Abdelmajid Jouraiphy, Soumia Amir, Mohamed El Gharous, Jean-Claude Revel, Mohamed Hafidi,