Biomethane Production from Waste Activated Sludge Promoted by Sludge Incineration Bottom Ash: The Distinctive Role of Metal Cations and Inert Fractions

2021 ◽  
Author(s):  
Yanwen Shen ◽  
Changkai Yin ◽  
Chao Li ◽  
Nanwen Zhu
Keyword(s):  
Activated Sludge ◽  
Bottom Ash ◽  
Metal Cations ◽  
Waste Activated Sludge ◽  
Sludge Incineration ◽  
Biomethane Production ◽  
Distinctive Role

scholarly journals Volatile Fatty Acids and Biomethane Recovery from Thickened Waste Activated Sludge: Hydrothermal Pretreatment’s Retention Time Impact

Processes ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. 1580
Author(s):  
Farokh laqa Kakar ◽  
Ahmed El Sayed ◽  
Neha Purohit ◽  
Elsayed Elbeshbishy
Keyword(s):  
Fatty Acids ◽  
Activated Sludge ◽  
Retention Time ◽  
Volatile Fatty Acids ◽  
Oxygen Demand ◽  
Hydrothermal Pretreatment ◽  
Waste Activated Sludge ◽  
Optimum Conditions ◽  
Pretreatment Temperature ◽  
Biomethane Production

The main objective of this study was to evaluate the hydrothermal pretreatment’s retention time influence on the volatile fatty acids and biomethane production from thickened waste activated sludge under mesophilic conditions. Six different retention times of 10, 20, 30, 40, 50, and 60 min were investigated while the hydrothermal pretreatment temperature was kept at 170 °C. The results showed that the chemical oxygen demand (COD) solubilization increased by increasing the hydrothermal pretreatment retention time up to 30 min and stabilized afterwards. The highest COD solubilization of 48% was observed for the sample pretreated at 170 °C for 30 min. Similarly, the sample pretreated at 170 °C for 30 min demonstrated the highest volatile fatty acids yield of 14.5 g COD/Lsubstrate added and a methane yield of 225 mL CH4/g TCODadded compared to 4.3 g COD/Lsubstrate added and 163 mL CH4/g TCODadded for the raw sample, respectively. The outcome of this study revealed that the optimum conditions for solubilization are not necessarily associated with the best fermentation and/or digestion performance.

Anaerobic digestion of waste activated sludge with incineration bottom ash: Enhanced methane production and CO2 sequestration

2018 ◽  
Vol 215 ◽  
pp. 503-511 ◽  
Author(s):  
Changkai Yin ◽  
Yanwen Shen ◽  
Nanwen Zhu ◽  
Qiujie Huang ◽  
Ziyang Lou ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Methane Production ◽  
Co2 Sequestration ◽  
Bottom Ash ◽  
Waste Activated Sludge

scholarly journals Towards a metagenomic understanding on enhanced biomethane production from waste activated sludge after pH 10 pretreatment

2013 ◽  
Vol 6 (1) ◽  
pp. 38 ◽  
Author(s):  
Mabel Ting Wong ◽  
Dong Zhang ◽  
Jun Li ◽  
Raymond Kin Hi Hui ◽  
Hein Min Tun ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Waste Activated Sludge ◽  
Biomethane Production

The role of a newly isolated strain Corynebacterium pollutisoli SPH6 in waste activated sludge alkaline fermentation

Chemosphere ◽  
2020 ◽  
Vol 241 ◽  
pp. 125072 ◽  
Author(s):  
Lina Pang ◽  
Ye He ◽  
Xuna Liu ◽  
Junjie Li ◽  
Ping Yang
Keyword(s):  
Activated Sludge ◽  
Waste Activated Sludge

Genome-Centric Metatranscriptomics Analysis Reveals the Role of Hydrochar in Anaerobic Digestion of Waste Activated Sludge

2021 ◽  
Author(s):  
Zhijian Shi ◽  
Stefano Campanaro ◽  
Muhammad Usman ◽  
Laura Treu ◽  
Arianna Basile ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Waste Activated Sludge
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