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Enhancing dark fermentative biohydrogen and VFA production via ozone pre-treatment
Bioresource Technology ( IF 9.7 ) Pub Date : 2025-01-22 , DOI: 10.1016/j.biortech.2025.132107
M. Eugenia Ibáñez-López, Encarnación Díaz-Domínguez, Francisco J. Fernández-Morales, José L. García-Morales
Bioresource Technology ( IF 9.7 ) Pub Date : 2025-01-22 , DOI: 10.1016/j.biortech.2025.132107
M. Eugenia Ibáñez-López, Encarnación Díaz-Domínguez, Francisco J. Fernández-Morales, José L. García-Morales
This study investigates the effects of ozone pre-treatment on two types of organic wastes: secondary sludge (SS) and wine vinasse (WV). Ozone pre-treatment of SS, a semi-solid waste, significantly increased the Dissolved Organic Carbon (DOC) and Total Volatile Fatty Acids (TVFAs) through hydrolysis. Conversely, ozone pre-treatment of WV, a liquid organic waste, reduced the availability of soluble biodegradable substrates and decreased the concentration of carboxylic acids with carbon chain length higher than 4. Based on these findings, the impact of ozonation on subsequent dark fermentation Biochemical Hydrogen Potential (BHP) was assessed for SS. The results, modeled for an ozone dose of 0.018 g O3 /g TS, indicated a substantial enhancement in bio-hydrogen production by approximately 160% and VFA production by about 350%. In conclusion, ozone pre-treatment shows significant potential to enhance dark fermentation of particulate substrates like secondary sludge, supporting sustainable waste valorization strategies.
中文翻译:
通过臭氧预处理提高深色发酵生物氢和 VFA 的生产
本研究调查了臭氧预处理对两种有机废物的影响:二次污泥 (SS) 和葡萄酒酒糟 (WV)。SS(一种半固体废物)的臭氧预处理通过水解显着增加了溶解有机碳 (DOC) 和总挥发性脂肪酸 (TVFA)。相反,WV(一种液体有机废物)的臭氧预处理降低了可溶性可生物降解底物的可用性,并降低了碳链长度大于 4 的羧酸的浓度。基于这些发现,臭氧化对随后暗发酵的影响 SS 的生化氢势 (BHP) 进行了评估。以 0.018 g O3/g TS 的臭氧剂量建模的结果显示,生物氢产量显着提高约 160%,VFA 产量大幅提高约 350%。总之,臭氧预处理显示出增强次生污泥等颗粒基质的暗发酵的巨大潜力,从而支持可持续的废物价值化战略。
更新日期:2025-01-22
中文翻译:
通过臭氧预处理提高深色发酵生物氢和 VFA 的生产
本研究调查了臭氧预处理对两种有机废物的影响:二次污泥 (SS) 和葡萄酒酒糟 (WV)。SS(一种半固体废物)的臭氧预处理通过水解显着增加了溶解有机碳 (DOC) 和总挥发性脂肪酸 (TVFA)。相反,WV(一种液体有机废物)的臭氧预处理降低了可溶性可生物降解底物的可用性,并降低了碳链长度大于 4 的羧酸的浓度。基于这些发现,臭氧化对随后暗发酵的影响 SS 的生化氢势 (BHP) 进行了评估。以 0.018 g O3/g TS 的臭氧剂量建模的结果显示,生物氢产量显着提高约 160%,VFA 产量大幅提高约 350%。总之,臭氧预处理显示出增强次生污泥等颗粒基质的暗发酵的巨大潜力,从而支持可持续的废物价值化战略。