کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4996779 | 1368274 | 2017 | 11 صفحه PDF | دانلود رایگان |
- Dry anaerobic digestion of solid wastes using textile reactor is a novel technology.
- Methane yield using acclimated bacteria was 290Â NmlCH4/gVS of manure and straw.
- Digestate was affirmed suitable as supplement for soil deficient of major nutrients.
- Industrial concept for dry anaerobic digestion using textile reactor was proposed.
- Economic analysis shows dry-AD using textile bioreactor is a cost effective solution.
The aim of this work was to study dry anaerobic digestion (dry-AD) of manure bedded with straw using textile-based bioreactor in repeated batches. The 90-L reactor filled with the feedstocks (22-30% total solid) and inoculum without any further treatment, while the biogas produced were collected and analyzed. The digestate residue was also analyzed to check its suitability as bio-fertilizer. Methane yield after acclimatization increased from 183 to 290Â NmlCH4/gVS, degradation time decreased from 136 to 92Â days and the digestate composition point to suitable bio-fertilizer. The results then used to carry out economical evaluation, which shows dry-AD in textile bioreactors is a profitable method of handling the waste with maximum payback period of 5Â years, net present value from $7,000 to $9,800,000 (small to large bioreactors) with internal rate of return from 56.6 to 19.3%.
Journal: Bioresource Technology - Volume 245, Part A, December 2017, Pages 549-559