固态厌氧消化马厩废麦秸。
Solid-state anaerobic digestion of spent wheat straw from horse stall.
机构信息
Department of Food, Agricultural, and Biological Engineering, The Ohio State University/Ohio Agricultural Research and Development Center, 1680 Madison Ave., Wooster, OH 44691-4096, USA.
出版信息
Bioresour Technol. 2011 Oct;102(20):9432-7. doi: 10.1016/j.biortech.2011.07.062. Epub 2011 Jul 26.
The spent wheat straw from horse stall bedding has lower cellulose and hemicellulose contents, but higher volatile fatty acid content than raw wheat straw. Biogas production from solid-state anaerobic digestion (SS-AD) of spent wheat straw and raw wheat straw was compared in this study. The SS-AD tests were conducted at 22% total solids (TS) content using inoculum from a liquid AD system at three feedstock-to-inoculum (F/I) ratios of 2.0, 4.0, and 6.0. Daily methane yields of spent wheat straw peaked 8 and 3 days earlier than those of raw wheat straw at F/I ratios of 2.0 and 4.0, respectively. The highest methane yield of 150.0 L/kg volatile solids (VS) was obtained from spent wheat straw at an F/I ratio of 4.0, which was 56.2% higher than that of raw wheat straw. The corresponding cellulose and hemicellulose degradation of spent wheat straw was 24.1% and 49.4% higher than those of raw wheat straw, respectively.
马厩垫料用后的小麦秸秆的纤维素和半纤维素含量较低，但挥发性脂肪酸含量较高。本研究比较了固态厌氧消化（SS-AD）中用过的小麦秸秆和生小麦秸秆的沼气产量。SS-AD 试验在总固体（TS）含量为 22%的条件下进行，使用液体 AD 系统中的接种物，在 2.0、4.0 和 6.0 三个进料比（F/I）下进行。在 F/I 比为 2.0 和 4.0 时，用过的小麦秸秆的每日甲烷产量分别比生小麦秸秆早 8 天和 3 天达到峰值。在 F/I 比为 4.0 时，用过的小麦秸秆获得了 150.0 L/kg 挥发性固体（VS）的最高甲烷产量，比生小麦秸秆高 56.2%。用过的小麦秸秆的纤维素和半纤维素降解率分别比生小麦秸秆高 24.1%和 49.4%。
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