Effect of lysozyme combined with hydrothermal pretreatment on excess sludge and anaerobic digestion
作者：
Xiuqin Cao*;Songyue Li;Chaolei Liu
通讯作者：
Xiuqin Cao
作者机构：
School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
Key Laboratory of Urban Storm water System and Water Environment (Ministry of Education), Beijing University of Civil Engineering and Architecture, Beijing 100044, China
通讯机构：
School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
Key Laboratory of Urban Storm water System and Water Environment (Ministry of Education), Beijing University of Civil Engineering and Architecture, Beijing 100044, China
语种：
英文
关键词：
Excess sludge,Lysozyme,Hydrothermal pre-treatment,Anaerobic digestion,Gas production
期刊：
环境科学学报(英文版)
ISSN：
1001-0742
年：
2025
卷：
147
页码：
36-49
摘要：
Anaerobic digestion (AD) is widely employed for sludge stabilization and waste reduction. However, the slow hydrolysis process hinders methane production and leads to prolonged sludge issues. In this study, an efficient and eco-friendly lysozyme pre-treatment method was utilized to address these challenges. By optimizing lysozyme dosage, hydrolysis and cell lysis were maximized. Furthermore, lysozyme combined with hydrothermal pretreatment enhanced overall efficiency. Results indicate that: (1) When lysozyme dosage reached 90 mg/g TS after 240 min of pretreatment, SCOD, soluble polysaccharides, and protein content reached their maxima at 855.00, 44.09, and 204.86 mg/L, re...
