Improving volatile fatty acid yield from sludge anaerobic fermentation through self-forming dynamic membrane separation

2016 ◽  
Vol 218 ◽  
pp. 92-100 ◽  
Author(s):  
Hongbo Liu ◽  
Yuanyuan Wang ◽  
Bo Yin ◽  
Yanfang Zhu ◽  
Bo Fu ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Volatile Fatty Acid ◽  
Membrane Separation ◽  
Anaerobic Fermentation ◽  
Dynamic Membrane ◽  
Acid Yield

Volatile fatty acid (VFA) and methane generation from sewage sludge and banana straw: influence of pH and two-phase anaerobic fermentation

2019 ◽  
Vol 152 ◽  
pp. 208-213
Author(s):  
Shun He ◽  
Qinghua Deng ◽  
Ping Xian ◽  
Zhongtang Li ◽  
Songfan Tan ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Sewage Sludge ◽  
Volatile Fatty Acid ◽  
Anaerobic Fermentation ◽  
Two Phase ◽  
Methane Generation ◽  
Influence Of Ph

Anaerobic fermentation of organic solid wastes: volatile fatty acid production and separation

2014 ◽  
Vol 69 (10) ◽  
pp. 2132-2138 ◽  
Author(s):  
H. Yesil ◽  
A. E. Tugtas ◽  
A. Bayrakdar ◽  
B. Calli
Keyword(s):  
Fatty Acid ◽  
Volatile Fatty Acid ◽  
Production Efficiency ◽  
Anaerobic Fermentation ◽  
Fold Increase ◽  
Feed Solution ◽  
Caproic Acid ◽  
Fatty Acid Production ◽  
Ph Values ◽  
Recycle Rate

Anaerobic fermentation of organic municipal solid waste was investigated using a leach-bed reactor (LBR) to assess the volatile fatty acid (VFA) production efficiency. The leachate recycle rate in the LBR affected the VFA composition of the leachate. A six-fold increase in the recycle rate resulted in an increase of the acetic acid fraction of leachate from 24.7 to 43.0%. The separation of VFAs via leachate replacement resulted in higher total VFA production. VFA separation from synthetic VFA mix and leachate of a fermented organic waste was assessed via a counter-current flow polytetrafluoroethylene (PTFE) membrane contactor. Acetic and propionic acid permeation fluxes of 13.12 and 14.21 g/m2.h were obtained at low feed pH values when a synthetic VFA mix was used as a feed solution. The highest selectivity was obtained for caproic acid compared to that of other VFAs when synthetic VFA mix or leachate was used as a feed solution. High pH values and the presence of suspended solids in the leachate adversely affected the permeation rate.

Carbide slag pretreatment enhances volatile fatty acid production in anaerobic fermentation of four grass biomasses

2019 ◽  
Vol 199 ◽  
pp. 112009 ◽  
Author(s):  
Xue Tao ◽  
Panyue Zhang ◽  
Guangming Zhang ◽  
Mohammad Nabi ◽  
Siqi Wang ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Acid Production ◽  
Volatile Fatty Acid ◽  
Anaerobic Fermentation ◽  
Fatty Acid Production ◽  
Carbide Slag
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