화학공학소재연구정보센터
Bioresource Technology, Vol.245, 549-559, 2017
Cost effective dry anaerobic digestion in textile bioreactors: Experimental and economic evaluation
The aim of this work was to study dry anaerobic digestion (dry-AD) of manure bedded with straw using textilebased 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 290 NmlCH(4)/gVS, degradation time decreased from 136 to 92 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 5 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%.