Comparative evaluation of the biochemical methane potential of waste activated sludge acetic acid and cellulose substrates under mesophilic and thermophilic anaerobic digestion

2020 ◽  
Vol 2 (9) ◽  
Author(s):  
Getachew Dagnew Gebreeyessus
Keyword(s):  
Acetic Acid ◽  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Comparative Evaluation ◽  
Waste Activated Sludge ◽  
Biochemical Methane Potential ◽  
Thermophilic Anaerobic Digestion ◽  
Cellulose Substrates ◽  
Methane Potential

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

Improvement of the thermophilic anaerobic digestion and hygienisation of waste activated sludge by synergistic pretreatment

2019 ◽  
Vol 54 (7) ◽  
pp. 694-700 ◽  
Author(s):  
Klaudiusz Grübel ◽  
Stanisław Wacławek ◽  
Mariusz Kuglarz ◽  
Maria Wacławek ◽  
Miroslav Černík
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Waste Activated Sludge ◽  
Thermophilic Anaerobic Digestion

Solubilization of waste activated sludge by alkaline pretreatment and biochemical methane potential (BMP) tests for anaerobic co-digestion of municipal organic waste

2003 ◽  
Vol 48 (8) ◽  
pp. 211-219 ◽  
Author(s):  
N.-H. Heo ◽  
S.-C. Park ◽  
J.-S. Lee ◽  
H. Kang
Keyword(s):  
Activated Sludge ◽  
Food Waste ◽  
Organic Waste ◽  
Waste Activated Sludge ◽  
Feed Mixture ◽  
Biochemical Methane Potential ◽  
Methane Recovery ◽  
Attractive Option ◽  
Methane Potential ◽  
Anaerobic Digestibility

Biochemical methane potential (BMP) tests have been carried out to determine the anaerobic digestibility of the waste activated sludge (WAS) and the sludge pretreated by NaOH (PWAS). The optimal NaOH dosage was determined to be 45 meq NaOH/L. The maximum SCOD solubilization was 27.7, 31.4 and 38.3% at the temperatures of 25, 35 and 55°C respectively after 4 hours reaction. The final methane yield of simulated food waste (SFW) was 430 ml CH4/g VSadded, and those of PWAS (25°C), PWAS (35°C) and PWAS (55°C) was 274, 286 and 310 ml CH4/g VSadded respectively after 20 days. The figures were 66%, 73% and 88% higher than that of WAS. The methane production in anaerobic co-digestion is considerably affected by the fraction of SFW and PWAS in the feed. The anaerobic digestibility of the feed mixture (SFW with PWAS) is higher than that of the feed mixture (SFW with WAS). Anaerobic co-digestion of food waste with the PWAS is found to be an attractive option to reduce the solid waste volume with improved methane recovery.

Performance and energy aspects of single and two phase thermophilic anaerobic digestion of waste activated sludge

2016 ◽  
Vol 86 ◽  
pp. 1324-1331 ◽  
Author(s):  
Wanderli Rogério Moreira Leite ◽  
Marco Gottardo ◽  
Paolo Pavan ◽  
Paulo Belli Filho ◽  
David Bolzonella
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Waste Activated Sludge ◽  
Two Phase ◽  
Thermophilic Anaerobic Digestion ◽  
Energy Aspects

Analysis of microbial community structure and diversity in the thermophilic anaerobic digestion of waste activated sludge

2008 ◽  
Vol 57 (8) ◽  
pp. 1199-1205 ◽  
Author(s):  
T. Kobayashi ◽  
Y. Y. Li ◽  
H. Harada
Keyword(s):  
Microbial Community ◽  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Real Time ◽  
Waste Activated Sludge ◽  
Methanosarcina Thermophila ◽  
Acetoclastic Methanogen ◽  
Thermophilic Anaerobic Digestion ◽  
Bacterial Clone ◽  
Polymerase Chain

The microbial community structures in the thermophilic anaerobic digestion (TAD) of waste activated sludge (WAS) and WAS were analyzed with molecular biological techniques including real-time polymerase chain reaction (PCR) and cloning. The microbial community of TAD had less diversity than that of WAS, and the sequences obtained in WAS were not present in TAD by the cloning analysis. In the TAD bacterial clone library, 97.5% of total clones were affiliated with the phylum Firmicutes and 73.1% with the genus Coprothermobacter. Real-time PCR and cloning analysis revealed that the number of Methanosarcina thermophila, which is an acetoclastic methanogen, is larger than that of Methanoculleus thermophilus, which is a hydrogenotrophic methanogen, in terms of the numbers of copies of 16S ribosomal DNA (rDNA).

scholarly journals Acidification of Waste Activated Sludge During Thermophilic Anaerobic Digestion

2012 ◽  
Vol 16 ◽  
pp. 391-400 ◽  
Author(s):  
Xiuyun Sun ◽  
Wei Wang ◽  
Can Chen ◽  
Changyin Luo ◽  
Jiansheng Li ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Waste Activated Sludge ◽  
Thermophilic Anaerobic Digestion

Methane-rich biogas production from waste-activated sludge with the addition of ferric chloride under a thermophilic anaerobic digestion system

RSC Advances ◽  
2015 ◽  
Vol 5 (48) ◽  
pp. 38538-38546 ◽  
Author(s):  
Bao Yu ◽  
Dongling Zhang ◽  
Aidang Shan ◽  
Ziyang Lou ◽  
Haiping Yuan ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Activated Sludge ◽  
Ferric Chloride ◽  
Biogas Production ◽  
Waste Activated Sludge ◽  
Thermophilic Anaerobic Digestion ◽  
System P ◽  
Favourable Environment

Three ferric salts, i.e. Fe(NO3)3, Fe2(SO4)3 and FeCl3 were introduced to test the potential effects on sludge thermophilic anaerobic digestion, and a favourable environment was created with the addition of FeCl3.

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