کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7070609 | 1459925 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of vermicomposting on concentration and speciation of heavy metals in sewage sludge with additive materials
ترجمه فارسی عنوان
اثر ورمی کمپوستینگ بر غلظت و شکل گیری فلزات سنگین در لجن فاضلاب با مواد افزودنی
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کلمات کلیدی
لجن فاضلاب، ورمی کمپوستینگ، فلزات سنگین، خاصیت، مواد افزودنی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
The aim of this work was to evaluate the total content and speciation of heavy metals (As, Cr, Cd, Cu, Fe, Mn, Ni, Pb and Zn) during vermicomposting of sewage sludge by Eisenia fetida earthworm with different additive materials (soil, straw, fly ash and sawdust). Results showed that the pH, total organic carbon were reduced, while the electric conductivity and germination index increased after a combined composting - vermicomposting process. The addition of bulking agents accelerated the stabilization of sludge and eliminated its toxicity. The total heavy metals after vermicomposting in 10 scenarios were lowered as compared with the initial values and the control without amendment. BCR sequential extraction indicated that vermicomposting significantly decreased the mobility of all heavy metals by increasing the residual fractions. The activity of earthworms and appropriate addition of amendment materials played a positive role in sequestering heavy metals during the treatment of sewage sludge.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 218, October 2016, Pages 867-873
Journal: Bioresource Technology - Volume 218, October 2016, Pages 867-873
نویسندگان
Xin He, Yaxin Zhang, Maocai Shen, Guangming Zeng, Mucen Zhou, Meirong Li,