Evaluation of anaerobic digestion of food waste and waste activated sludge: Soluble COD versus its chemical composition

2018 ◽  
Vol 643 ◽  
pp. 21-27 ◽  
Author(s):  
Yingqun Ma ◽  
Jun Gu ◽  
Yu Liu
Keyword(s):  
Anaerobic Digestion ◽  
Chemical Composition ◽  
Activated Sludge ◽  
Food Waste ◽  
Waste Activated Sludge

Anaerobic Co-Digestion of Food Waste and Thermal Pretreated Waste Activated Sludge: Synergetic Effect and Energy Assessment

2021 ◽  
Author(s):  
Jian Zhang ◽  
Peng Gan ◽  
Ru-yi Wang ◽  
Tian Xie ◽  
Yang Liu ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Food Waste ◽  
Methane Production ◽  
Synergetic Effect ◽  
Gompertz Model ◽  
Waste Activated Sludge ◽  
Thermal Pretreatment ◽  
Energy Assessment ◽  
Modified Gompertz Model

Abstract Thermal pretreatment was an effective method to improve the anaerobic digestion of waste activated sludge. However its application in China was still hindered by the high energy demand. In order to balance the energy consumption of sludge thermal pretreatment integrated with anaerobic digestion, food waste was introduced as co-substrate to achieve an energy self-sustainable sludge treatment system. Anaerobic biodegradability test was performed using thermal pretreated sludge and food waste in order to clarify the kinetics and mechanism of co-digestion, especially the synergetic effect on specific methane yield. The prominent synergetic effect was an initial acceleration of cumulative methane production by 20.7- 23.8% observed during the first 15 days, and the cumulative methane production of feedstock can be calculated proportionately from its composition. Between the evaluated models, modified Gompertz model presented a better agreement of the experimental results and it was able to describe the synergetic effect, assessed by the relative deviation between theoretical estimation and the experimental results of co-digestion tests. This feature made modified Gompertz model a suitable tool for methane production prediction of mono- and co-digestion. Energy assessment shown that co-digestion with food waste was a sustainable solution to maintain the integration of thermal pretreatment and anaerobic digestion energy neutral or even positive. Besides, the performance of sludge dewatering was a crucial factor for the energy balance.

Elucidating a synergistic effect of food waste addition on the enhanced anaerobic digestion of waste activated sludge

2015 ◽  
Vol 32 (8) ◽  
pp. 1542-1546 ◽  
Author(s):  
Yeo-Myeong Yun ◽  
Si-Kyung Cho ◽  
Hyun-Woo Kim ◽  
Kyung-Won Jung ◽  
Hang-Sik Shin ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Synergistic Effect ◽  
Activated Sludge ◽  
Food Waste ◽  
Waste Activated Sludge ◽  
Effect Of Food

Occurrence, effect, and fate of residual microplastics in anaerobic digestion of waste activated sludge: A state-of-the-art review

2021 ◽  
pp. 125035
Author(s):  
Zhang-Wei He ◽  
Wen-Jing Yang ◽  
Yong-Xiang Ren ◽  
Hong-Yu Jin ◽  
Cong-Cong Tang ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
State Of The Art ◽  
Waste Activated Sludge

Modified ADM1 disintegration/hydrolysis structures for modeling batch thermophilic anaerobic digestion of thermally pretreated waste activated sludge

2009 ◽  
Vol 43 (14) ◽  
pp. 3479-3492 ◽  
Author(s):  
Ivan Ramirez ◽  
Alexis Mottet ◽  
Hélène Carrère ◽  
Stéphane Déléris ◽  
Fabien Vedrenne ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Waste Activated Sludge ◽  
Thermophilic Anaerobic Digestion

scholarly journals Experimental and mathematical characterisation of the rheological instability of concentrated waste activated sludge subject to anaerobic digestion

2018 ◽  
Vol 349 ◽  
pp. 318-326 ◽  
Author(s):  
Peng Wei ◽  
Qiuman Tan ◽  
Wim Uijttewaal ◽  
Jules B. van Lier ◽  
Merle de Kreuk
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Waste Activated Sludge

Low temperature thermo-chemical pretreatment of dairy waste activated sludge for anaerobic digestion process

2012 ◽  
Vol 103 (1) ◽  
pp. 415-424 ◽  
Author(s):  
R. Uma Rani ◽  
S. Adish Kumar ◽  
S. Kaliappan ◽  
Ick-Tae Yeom ◽  
J. Rajesh Banu
Keyword(s):  
Anaerobic Digestion ◽  
Low Temperature ◽  
Activated Sludge ◽  
Waste Activated Sludge ◽  
Chemical Pretreatment ◽  
Anaerobic Digestion Process ◽  
Digestion Process ◽  
Dairy Waste
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