Federal University of Fronteira Sul (UFFS), Laboratory of Microbiology and Bioprocesses, RS 135, Km 72, 99700-000 Erechim, RS, Brazil.
Federal University of Santa Catarina (UFSC), Department of Chemical and Food Engineering, Florianópolis, SC, Brazil.
Bioresour Technol. 2018 Oct;266:116-124. doi: 10.1016/j.biortech.2018.06.069. Epub 2018 Jun 21.
Different pretreatments were evaluated on corn stalk (Zea mays) applied as a lignocellulosic source in anaerobic co-digestion with swine manure, using sulfuric acid (HSO) and hydrogen peroxide (HO) for biogas production purposes. Using HSO we achieved a 75.1% removal of the hemicellulose fraction, in low acid concentrations (0.75% v.v). However, this technique inhibited the co-digestion process. Pretreatment with 12% of HO (pH 11.5) increased the cellulose fraction by 73.4% and reduced the lignin content by 71.6%. This pretreatment is recommended for biogas production, as it increased the final volume of biogas by 22% and reduced the digestion time by one third. So, a promising alternative was obtained in order to facilitate the anaerobic digestion of the carbohydrates present in this biomass.
不同的预处理方法被评估应用于玉米秸秆（Zea mays）作为木质纤维素源与猪粪进行厌氧共消化，使用硫酸（HSO）和过氧化氢（HO）用于沼气生产目的。使用 HSO，我们在低酸浓度（0.75% v.v）下实现了 75.1%的半纤维素部分去除。然而，该技术抑制了共消化过程。用 12%的 HO（pH 11.5）预处理增加了 73.4%的纤维素部分，减少了 71.6%的木质素含量。这种预处理方法推荐用于沼气生产，因为它增加了沼气的最终体积 22%，并将消化时间缩短了三分之一。因此，获得了一种有前途的替代方法，以促进生物质中存在的碳水化合物的厌氧消化。
