Efficient methane fermentation from the waste of a novel straw alkali-heat pretreatment-butyric acid fermentation process

ABSTRACTThe butyric acid biorefinery technology for straw is highly significant for environmental protection and the restructuring of the energy system. However, this process produces waste from alkali-heat pretreatment (PW) and butyric acid fermentation (FW). In this study, the feasibility of metha...

Description complète

Détails bibliographiques
Publié dans:Environmental technology. - 1993. - 46(2025), 11 vom: 03. Apr., Seite 2011-2021
Auteur principal: Li, Jianzheng (Auteur)
Autres auteurs: Liu, Jiazhi, Pan, Zhen, Gao, Wenlin, Zhang, Yupeng, Li, Jiuling, Meng, Jia
Format: Article en ligne
Langue:English
Publié: 2025
Accès à la collection:Environmental technology
Sujets:Journal Article Rice straw acidogenic fermentation alkali-heat pretreatment methane fermentation waste Methane OP0UW79H66 Butyric Acid 107-92-6 plus... Alkalies Biofuels
Description
Résumé:ABSTRACTThe butyric acid biorefinery technology for straw is highly significant for environmental protection and the restructuring of the energy system. However, this process produces waste from alkali-heat pretreatment (PW) and butyric acid fermentation (FW). In this study, the feasibility of methane fermentation from the wastes was confirmed, with the methane production from PW and FW of 351.1 ± 11.8 and 741.5 ± 14.2 mLCH4/gVS, respectively. The initial pH and VFW/VPW of methane fermentation using the mixed waste of PW and FW were optimized at 7.5 and 1.8, respectively. The methane fermentation using the mixed waste was also verified by operating two anaerobic digesters in sequencing batch mode. At the VFW/VPW of 0.25 (actual ratio), methane production was 301.20 mLCH4/gVS with the waste load of 0.64 kgVS/m³/d. When the VFW/VPW was 1.8 (optimal ratio), methane production reached 396.45 mLCH4/gVS at the waste load of 1.20 kgVS/m3/d. This study facilitates the comprehensive utilization of all components within rice straw
Description:Date Completed 24.04.2025
Date Revised 24.04.2025
published: Print-Electronic
Citation Status MEDLINE
ISSN:1479-487X
DOI:10.1080/09593330.2024.2416092