کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
582590 | 877856 | 2009 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Biological activity during co-composting of sludge issued from the OMW evaporation ponds with poultry manure-Physico-chemical characterization of the processed organic matter
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کلمات کلیدی
CFUCOTOMWC/N - C / NOMS - WHOchemical oxygen demand - تقاضای اکسیژن شیمیاییElectrical conductivity - رسانایی الکتریکیGermination index - شاخص جوانه زنیOlive mill wastewater - فاضلاب زیتون آسیاب شدهorganic matter - ماده آلیCarbon to nitrogen ratio - نسبت کربن به نیتروژنtotal nitrogen - نیتروژن کاملcolony forming units - واحدهای تشکیل دهنده کلنیCod - کادوOrganic carbon - کربن آلیTotal organic carbon - کل کربن آلیPoultry manure - کود مرغیCorg - کورگ
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Olive mill sludge (OMS), a by-product resulting from natural evaporation of olive oil processing effluent, poses a major environmental threat. A current cost-effective practice of OMS management is composting. A mixture of OMS (60%) with poultry manure (PM) was successfully composted for 210 days. During the process, effluents of olive oil mill and confectionary were used to keep moisture at optimal level (40-60%). Biological indicators reflecting stability of the compost (microbial biota respiration and enumeration, and germination index) were analysed for the assessment of the product quality. The composted mixture showed a high microbial activity with a succession of microbial populations depending on the temperature reached during the biodegradation. The pathogen content from PM decreased with composting as did phytotoxic compounds. Phenols and lipids were reduced, respectively, by 40% and 84% while germination index increased with composting progress. Fourier transform infrared (FTIR) spectroscopic analysis revealed that the final compost improved the aromatic content compared to the starting materials, with a decrease in aliphatic groups and a reduction in the easily assimilated components by the microflora acting during the biological process. The final compost was characterized by relatively high organic matter content (26.21%), a low C/N ratio (16.21), an alkaline pH (8.32), a relatively high electrical conductivity (9.21Â mS/cm) and a high level of nutrients. The germination index for Lepidium sativum L. was 87.71% after 210 days of composting, showing that the final compost was not phytotoxic.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 162, Issue 1, 15 February 2009, Pages 402-409
Journal: Journal of Hazardous Materials - Volume 162, Issue 1, 15 February 2009, Pages 402-409
نویسندگان
Salma Hachicha, Fatma Sellami, Juan Cegarra, Ridha Hachicha, Noureddine Drira, Khaled Medhioub, Emna Ammar,