New insights into the enhanced performance of high solid anaerobic digestion with dewatered sludge by thermal hydrolysis: Organic matter degradation and methanogenic pathways

2018 ◽  
Vol 342 ◽  
pp. 1-9 ◽  
Author(s):  
Sisi Chen ◽  
Ning Li ◽  
Bin Dong ◽  
Wentao Zhao ◽  
Lingling Dai ◽  
...  
Keyword(s):  
Organic Matter ◽  
Anaerobic Digestion ◽  
Thermal Hydrolysis ◽  
Organic Matter Degradation ◽  
High Solid ◽  
Dewatered Sludge

Effects of thermal hydrolysis on organic matter solubilization and anaerobic digestion of high solid sludge

2015 ◽  
Vol 264 ◽  
pp. 174-180 ◽  
Author(s):  
Yonggang Xue ◽  
Huajie Liu ◽  
Sisi Chen ◽  
Norbert Dichtl ◽  
Xiaohu Dai ◽  
...  
Keyword(s):  
Organic Matter ◽  
Anaerobic Digestion ◽  
Thermal Hydrolysis ◽  
High Solid

Study of thermal hydrolysis as a pretreatment to mesophilic anaerobic digestion of pig slurry

2001 ◽  
Vol 44 (4) ◽  
pp. 109-116 ◽  
Author(s):  
A. Bonmatí ◽  
X. Flotats ◽  
L. Mateu ◽  
E. Campos
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Limiting Factor ◽  
Pig Slurry ◽  
Thermal Hydrolysis ◽  
Organic Matter Degradation ◽  
Thermal Pretreatment ◽  
Digestion Process ◽  
Degradation Tests ◽  
Thermal Phenomena

Feasibility of anaerobic digestion of pig slurry is dependent, among other factors, on the biogas production rate, which is low compared with other organic wastes, and on the profitable uses of surplus thermal energy produced, a limiting factor in warm geographical areas. The objectives of this work are determining whether low temperature thermal pretreatment (<90°C) improves pig slurry anaerobic digestion, and determining whether organic matter degradation during the thermal pretreatment is due to thermal phenomena (80°C) or to enzymatic ones (60°C). The thermal degradation tests showed that hydrolysis occurring during the thermal pretreatment is due to thermal phenomena. The increase in soluble substances were significantly larger at 80°C than at 60°C (both during 3 h). Two types of slurry were used in the batch anaerobic digestion tests. The effect of thermal pretreatment differed with the type of slurry: it was positive with almost non-degraded slurries containing low NH4+-N concentration, and negative (inhibition of the anaerobic digestion process) when using degraded slurries with high NH4+-N content.

Influence of thermal hydrolysis pretreatment on organic transformation characteristics of high solid anaerobic digestion

2017 ◽  
Vol 244 ◽  
pp. 836-843 ◽  
Author(s):  
Yun Han ◽  
Yang Zhuo ◽  
Dangcong Peng ◽  
Qian Yao ◽  
Huijuan Li ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Thermal Hydrolysis ◽  
High Solid
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