Characteristics of co-composts produced from raw faecal sludge and organic market waste in Osun state, southwest Nigeria
سال انتشار: 1399
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 225
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شناسه ملی سند علمی:
JR_ROWA-9-4_001
تاریخ نمایه سازی: 18 بهمن 1400
چکیده مقاله:
Purpose Faecal sludge (FS) and organic market waste (MW) have resources that could be recovered by co-composting though not fully explored under changing climatic conditions in Nigeria. This study explored the characteristics and nutrient quality of co-composts produced from pre-treated FS and MW feedstocks in Nigeria. Methods The study was exploratory and analytical in design and co-composting was purposively selected for resource-recovery. The raw faecal sludge (FS) was harvested from septic tanks of households (۵۰%) and institutions (۵۰%) through mechanical evacuation service trucks and dewatered using ۰.۱% gradient sand filter. The biodegradable MW was sorted and used for further studies. The dewatered FS (DFS) and MW were mixed in ratios ۱:۳, ۱:۵ and ۱:۷, respectively with DFS and MW as controls. Each of the mixes was made into ۱m۳ heap and co-composted using the windrow method. The experiments were monitored for ۸۸ days with fortnight composite sampling from each mix (۱۳-weeks). The samples were analyzed for temperature, pH, moisture-contents, micronutrients, macronutrients and pollutants using Standard Methods. Results At maturity, N:P:K (%) indicate good composts at ۹: ۵: ۴, ۱۸: ۷: ۱۹ and ۳: ۳: ۱ in the ۱: ۳, ۱: ۵ and ۱: ۷ mixes, respectively, while those of controls were: ۱۹:۱۲:۱۲ (DFS) and ۱۷:۱۴:۱۱(MW) with no significant differences between experimental and control mixes. Also, four factors extracted (pollutants, agronomic, macronutrients and micronutrients), explained ۷۸.۲% variability. Conclusion The matured co-compost satisfied nutrients and pollutants quality for agricultural use, recovered organic fertiliser from raw domestic and institutional faecal sludge and market waste.
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نویسندگان
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Department of Environmental Health Sciences, Faculty of Public Health, University of Ibadan, Nigeria
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Department of Environmental Health Sciences, Faculty of Public Health, University of Ibadan, Nigeria
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Department of Environmental Health Sciences, Faculty of Public Health, University of Ibadan, Nigeria
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Department of Environmental Health Sciences, Faculty of Public Health, University of Ibadan, Nigeria
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Department of Community Health, College of Health Sciences, Obafemi Awolowo University, Nigeria
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