Effect of polyvinyl alcohol hydrogel as a biocarrier on volatile fatty acids production of a two-stage thermophilic anaerobic membrane bioreactor

2014 ◽  
Vol 168 ◽  
pp. 100-105 ◽  
Author(s):  
Supawat Chaikasem ◽  
Amila Abeynayaka ◽  
Chettiyappan Visvanathan
2015 ◽  
Vol 196 ◽  
pp. 290-300 ◽  
Author(s):  
Zaineb Trad ◽  
Julius Akimbomi ◽  
Christophe Vial ◽  
Christian Larroche ◽  
Mohammad J. Taherzadeh ◽  
...  

2019 ◽  
Vol 283 ◽  
pp. 120-128 ◽  
Author(s):  
Mohd Atiqueuzzaman Khan ◽  
Huu Hao Ngo ◽  
Wenshan Guo ◽  
Soon Woong Chang ◽  
Dinh Duc Nguyen ◽  
...  

2021 ◽  
Vol 129 ◽  
pp. 20-25
Author(s):  
Gamal K. Hassan ◽  
Rhys Jon Jones ◽  
Jaime Massanet-Nicolau ◽  
Richard Dinsdale ◽  
M.M. Abo-Aly ◽  
...  

Processes ◽  
2019 ◽  
Vol 7 (12) ◽  
pp. 879 ◽  
Author(s):  
Xiaolan Xiao ◽  
Wansheng Shi ◽  
Wenquan Ruan

The performance and microbial community structure for treating lipids-rich kitchen waste slurry in mesophilic Anaerobic Membrane Bioreactor (m-AnMBR) and thermophilic AnMBR (t-AnMBR) were compared in this study. Higher Organic Loading Rate (OLR) of 12 kg-COD/(m3·d), better Chemical Oxygen Demand (COD) removal efficiency over 98%, stronger stability with Volatile Fatty Acids (VFAs)/alkalinity below 0.04, higher flux with 18 L/(m2·h) and lower Long Chain Fatty Acids (LCFAs) concentration of 550 mg/L were obtained in the m-AnMBR. Directly increasing temperature from 39 to 55 °C resulted in a collapse of the t-AnMBR. Acclimation via gradually increasing temperature made the t-AnMBR run successfully with lower OLR and COD removal efficiency of 7.5 kg-COD/(m3·d) and 96%. An obvious discrepancy of microbial community structure was presented between the m-AnMBR and t-AnMBR via the 16S rRNA gene sequence analysis. The Methanomethylovorans and Methanoculleus were dominant in the t-AnMBR instead of Methanobacterium and Methanothrix in the m-AnMBR.


2020 ◽  
Vol 259 ◽  
pp. 110034 ◽  
Author(s):  
Ana Flávia Rezende Silva ◽  
Natalie Cristine Magalhães ◽  
Paulo Vitor Martinelli Cunha ◽  
Miriam Cristina Santos Amaral ◽  
Konrad Koch

2020 ◽  
Vol 11 (10) ◽  
pp. 5239-5246 ◽  
Author(s):  
Edoardo Righetti ◽  
Simone Nortilli ◽  
Francesco Fatone ◽  
Nicola Frison ◽  
David Bolzonella

Abstract A pilot scale biorefinery platform for the treatment of agro-waste and the production of hydrogen, methane and volatile fatty acids was studied in real environment. The system adopted was a two stage anaerobic process where hydrogen and volatile fatty acids were produced in the first phase (fermentation) and methane in the second one (digestion). The study demonstrated the possibility to produce a biogas composed by hydrogen and methane (10% and 55%, respectively) while recovering volatile fatty acids. The yield for acids production was equivalent to 0.13 gVFA/gTVS (as COD) with acetate and butyrate as dominant observed species. Graphic Abstract


2021 ◽  
Vol 321 ◽  
pp. 124456
Author(s):  
Umarin Jomnonkhaow ◽  
Clarisse Uwineza ◽  
Amir Mahboubi ◽  
Steven Wainaina ◽  
Alissara Reungsang ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document