Biohydrogen and methane production via silage-based dark co-fermentation using vinasse and filter cake

Q1 Environmental Science Bioresource Technology Reports Pub Date : 2024-08-06 DOI:10.1016/j.biteb.2024.101927

{"title":"Biohydrogen and methane production via silage-based dark co-fermentation using vinasse and filter cake","authors":"","doi":"10.1016/j.biteb.2024.101927","DOIUrl":null,"url":null,"abstract":"<div>Vinasse and filter cake (FC) are promising substrates for hydrogen (H2) production via dark fermentation. Silage, an anaerobic storage technique, helps break down macromolecules into simpler ones like xylose, fructose, and glucose. This study evaluated different ensiling durations (0, 20, 40, 80, and 100 days) on FC and its co-fermentation with sugarcane vinasse for H2 production, using the digestate for methane (CH4) production. The inoculum underwent an acid pretreatment to select H2-producing bacteria. The 40-day ensiling period yielded the best H2 performance (95 NmLH2 gVS−1, 43 % H2 concentration). Longer durations (80 and 100 days) were inefficient. The main metabolic pathways for H2 production were acetic and butyric acid production. The best CH4 yield was from 20-day silage (311 NmLCH4 gVS−1). Predominant microorganisms were Firmicutes and Actinobacteria. Ensiling effectively pre-treats for H2 and CH4 production, improving yield, and efficiency.</div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bioresource Technology Reports","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2589014X24001683","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Environmental Science","Score":null,"Total":0}

引用次数: 0

Abstract

Vinasse and filter cake (FC) are promising substrates for hydrogen (H₂) production via dark fermentation. Silage, an anaerobic storage technique, helps break down macromolecules into simpler ones like xylose, fructose, and glucose. This study evaluated different ensiling durations (0, 20, 40, 80, and 100 days) on FC and its co-fermentation with sugarcane vinasse for H₂ production, using the digestate for methane (CH₄) production. The inoculum underwent an acid pretreatment to select H₂-producing bacteria. The 40-day ensiling period yielded the best H₂ performance (95 NmLH₂ gVS⁻¹, 43 % H₂ concentration). Longer durations (80 and 100 days) were inefficient. The main metabolic pathways for H₂ production were acetic and butyric acid production. The best CH₄ yield was from 20-day silage (311 NmLCH₄ gVS⁻¹). Predominant microorganisms were Firmicutes and Actinobacteria. Ensiling effectively pre-treats for H₂ and CH₄ production, improving yield, and efficiency.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

利用沼渣和滤饼进行青贮暗合发酵，生产生物氢和甲烷

蔗渣和滤饼（FC）是通过暗发酵生产氢气（H2）的理想底物。青贮是一种厌氧贮藏技术，有助于将大分子分解为木糖、果糖和葡萄糖等更简单的物质。本研究评估了不同的青贮期（0、20、40、80 和 100 天）对 FC 及其与甘蔗渣共同发酵产生 H2 的影响，并利用沼渣生产甲烷（CH4）。接种物经过酸预处理，以筛选出产 H2 的细菌。40 天的沼渣贮存期产生的 H2 效能最好（95 NmLH2 gVS-1，43 % 的 H2 浓度）。更长的时间（80 天和 100 天）则效率较低。产生 H2 的主要代谢途径是乙酸和丁酸的产生。20 天青贮的 CH4 产量最高（311 NmLCH4 gVS-1）。主要微生物是固氮菌和放线菌。青贮可有效预处理 H2 和 CH4 的产生，提高产量和效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊