青贮发酵揭示了预处理对甘蔗生物质厌氧消化的影响：青贮添加剂对甲烷潜力的评估。
Ensiling fermentation reveals pre-treatment effects for anaerobic digestion of sugarcane biomass: An assessment of ensiling additives on methane potential.
机构信息
Department of Biochemical Conversion, Deutsches Biomasseforschungszentrum gemeinnützige GmbH, Torgauer Straße 116, 04347 Leipzig, Germany.
Centre for Agricultural Engineering, University of Southern Queensland, Toowoomba, Australia.
出版信息
Bioresour Technol. 2019 May;279:398-403. doi: 10.1016/j.biortech.2019.01.143. Epub 2019 Jan 31.
Ensiling of sugarcane trash (SCT) and sugarcane stalks (SCS) was studied to assess the effects of molasses (MOL) and lactic acid bacteria (LAB) inoculant on methane potential. The experiment was run for 70 days and monitoring parameters were analyzed at days 0, 5, 15 and 70. Biochemical methane potential (BMP) tests performed with fresh and ensiled material at day 70 showed an increase in methane potential by 24.0%, 23.4%, 1.7% and 71.1% for SCS, SCT, SCT and SCT, respectively. Such improved performance is explained by the formation of organic acids (mostly acetate and lactate) which were able to decrease the pH of the silages from 5.7-5.9 to 3.8-4.2 for all SCT treatments and from 5.9 up to 3.4 for SCS treatment. Thus, the ensiling process provided similar effects to a pre-treatment at low acid concentrations, which in turn improved the digestibility of the cellulosic biomass for methane production.
对甘蔗渣（SCT）和甘蔗秸秆（SCS）进行青贮研究，以评估糖蜜（MOL）和乳酸菌（LAB）接种剂对甲烷潜力的影响。该实验进行了 70 天，在第 0、5、15 和 70 天分析监测参数。在第 70 天用新鲜和青贮材料进行生物化学甲烷潜力（BMP）测试，结果表明 SCS、SCT、SCT 和 SCT 的甲烷潜力分别增加了 24.0%、23.4%、1.7%和 71.1%。这种性能的提高是由于形成了有机酸（主要是乙酸和乳酸），这些酸能够将所有 SCT 处理的青贮料的 pH 值从 5.7-5.9 降低到 3.8-4.2，而 SCS 处理的 pH 值从 5.9 降低到 3.4。因此，青贮过程提供了类似于在低酸浓度下进行预处理的效果，从而提高了纤维素生物质的消化率，有利于甲烷的生成。
Zotero 插件