Biochemical methane potential (BMP) of vinegar residue and the influence of feed to inoculum ratios on biogas production.
Biochemical methane potential (BMP) of vinegar residue and the influence of feed to inoculum ratios on biogas production.
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DOI：
10.15376/biores.8.2.2487-2498
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发表时间：
2013-03
期刊：
影响因子：
1.5
通讯作者：
Lu Feng;Yeqing Li;Chang Chen;Xiaoying Liu;Xiaolan Xiao;Xinxin Ma;Ruihong Zhang;Yanfeng He;Guang-qing Liu
中科院分区：
文献类型：
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作者：
Lu Feng;Yeqing Li;Chang Chen;Xiaoying Liu;Xiaolan Xiao;Xinxin Ma;Ruihong Zhang;Yanfeng He;Guang-qing Liu
醋渣是食醋生产过程中典型的农工副产物，是中国巨大的环境问题。尽管对食醋渣的利用已引起广泛关注，但目前还没有有效、经济、环保的处理方法。厌氧消化是一种广泛应用于有机废物处理的有效方法，可以将酸性废物转化为沼气能源。进行生化甲烷势测定，测定不同料接种比（F/I）对其的影响。当F/I为1时，甲烷产率最高，为242.69 mL g VS-1；当F/I为6时，甲烷产率最低，为182.94 mL g VS-1。在F/I比为5和6时，TVFA/TA比高于极限值（0.4），表明厌氧消化过程不稳定。建立了修正的Gompertz方程，计算了不同F/I比下的累积甲烷产量。结果表明，醋渣作为一种很有前途的处理此类废弃物的方法，在产气和厌氧消化方面具有广泛的潜力，值得进一步研究。
Vinegar residue, a typical agro-industrial by-product in the vinegar production process, constitutes a huge environmental problem in China. Though utilization of vinegar residue has drawn much attention, there is still no effective, economical, and environmentally friendly method to deal with it. Anaerobic digestion is an effective method widely used in organic waste processing which might be an alternative to convert this acidic waste into biogas energy. A biochemical methane potential assay was conducted, and the influence of different feed to inoculum ratios (F/I) was determined. The highest methane yield of 242.69 mL g VS-1 was achieved at a F/I of 1, while the lowest methane yield of 182.94 mL g VS-1 was obtained at a F/I of 6. The TVFA/TA ratio was higher than the limiting value (0.4) at F/I ratios of 5 and 6, which demonstrated destabilization during the anaerobic digestion process. The modified Gompertz equation was developed to calculate the cumulative methane yields from different F/I ratios. The results suggested that the vinegar residue had extensive potential in biogas production and anaerobic digestion as a promising method that may be applied to deal with such waste, thus it is worth doing further research in the future.