Effect of pH on volatile fatty acid production and the microbial community during anaerobic digestion of Chinese cabbage waste

2021 ◽  
pp. 125338
Author(s):  
Xiaonan Zhou ◽  
Yu Lu ◽  
Liu Huang ◽  
Qi Zhang ◽  
Xiangyou Wang ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Microbial Community ◽  
Anaerobic Digestion ◽  
Chinese Cabbage ◽  
Acid Production ◽  
Volatile Fatty Acid ◽  
Fatty Acid Production ◽  
Effect Of Ph

Effect of pH on volatile fatty acid production from anaerobic digestion of potato peel waste

2020 ◽  
Vol 316 ◽  
pp. 123851 ◽  
Author(s):  
Yu Lu ◽  
Qi Zhang ◽  
Xiangyou Wang ◽  
Xiaonan Zhou ◽  
Jiying Zhu
Keyword(s):  
Fatty Acid ◽  
Anaerobic Digestion ◽  
Acid Production ◽  
Volatile Fatty Acid ◽  
Potato Peel ◽  
Fatty Acid Production ◽  
Effect Of Ph

A Techno-Economic case for Volatile Fatty Acid Production for Increased Sustainability in the Wastewater Treatment Industry

2021 ◽  
Author(s):  
Ganesh K Veluswamy ◽  
Andy Ball ◽  
Richard Dinsdale ◽  
Alan Guwy ◽  
Kalpit Shah
Keyword(s):  
Wastewater Treatment ◽  
Fatty Acid ◽  
Anaerobic Digestion ◽  
Acid Production ◽  
Volatile Fatty Acid ◽  
Fugitive Emissions ◽  
Fatty Acid Production

Methane, the final product of methanogenesis during anaerobic digestion is a low value product (0.1$/m3). Concerns over fugitive emissions from methane coupled with recent reduction in costs of solar and...

scholarly journals Can salt-tolerant sludge mitigate the salt inhibition to acidogenic fermentation of food waste? Insight into volatile fatty acid production microbial community

2021 ◽  
Author(s):  
Jun Yin ◽  
Xiaozheng He ◽  
Ting Chen
Keyword(s):  
Salt Stress ◽  
Fatty Acid ◽  
Microbial Community ◽  
Food Waste ◽  
Acid Production ◽  
Biological Treatment ◽  
Volatile Fatty Acid ◽  
Salt Tolerant ◽  
Fatty Acid Production ◽  
Acidogenic Fermentation

Abstract For treatment of saline wastewater, the feasible approach to mitigate the salt inhibition is using the acclimated salt-tolerant sludge. The aim of this work was to verify if the use of the acclimated sludge (AS) also could alleviate salinity stress on acidogenic fermentation of food waste (FW) under saline environment. The responses of volatile fatty acid (VFA) production and the microbial community to salt stress were investigated. Results showed that VFA production was reduced by high salinity (30 g/L and 70 g/L NaCl) compared with the control (0 g/L NaCl), especially for groups inoculated with the AS, whereas inoculating with the non-acclimated sludge (non-AS) caused less reduction. The impact of salinity was seen on VFA production with accumulation of more propionic acid and acetic acid along with traces of butyric acid. Significant shift on microbial community composition occurred upon biomass exposure to salt. The microbial communities of the non-AS and AS groups at the same NaCl concentrations converged over time. The non-AS groups contained a more proportion of the phyla Bacteroidetes, Atribacteria and Chloroflexi at high salt levels. These findings demonstrate that the non-AS was more conducive to VFA production due to the presence of higher proportions of hydrolytic and fermenting bacteria.Statement of NoveltyAlthough anaerobic digestion (AD) would be the most cost‐effective and sustainable technology, the salinity is considered to be inhibitory to anaerobic biological treatment processes. The recent applications of salt‐tolerant cultures for the treatment of saline wastewaters suggest that biological treatment is promising. Previous studies also reported that acidogenic fermentation as the first step of AD process is inhibited under saline conditions. However, no study to date has focused on acidogenic fermentation for volatile fatty acid production from food waste using salt-tolerant sludge. Therefore, there is a need for improved understanding of high salt stress to resource recovery from organic wastes. This understanding can help in the design of an operating strategy to alleviate the inhibition of waste treatment by salinity.

Evaluating properties of protein in waste activated sludge for volatile fatty acid production: effect of pH

2015 ◽  
Vol 73 (9) ◽  
pp. 5047-5056 ◽  
Author(s):  
Xiaoling Liu ◽  
Xuejing Hu ◽  
Jian Wang ◽  
Yonghui Song ◽  
Mengmeng Wang ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Activated Sludge ◽  
Acid Production ◽  
Volatile Fatty Acid ◽  
Waste Activated Sludge ◽  
Fatty Acid Production ◽  
Effect Of Ph ◽  
Production Effect

Effect of total solids content on methane and volatile fatty acid production in anaerobic digestion of food waste

2014 ◽  
Vol 32 (10) ◽  
pp. 947-953 ◽  
Author(s):  
Flavia Liotta ◽  
Giuseppe d’Antonio ◽  
Giovanni Esposito ◽  
Massimiliano Fabbricino ◽  
Eric D van Hullebusch ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Anaerobic Digestion ◽  
Food Waste ◽  
Acid Production ◽  
Volatile Fatty Acid ◽  
Fatty Acid Production ◽  
Total Solids ◽  
Solids Content

scholarly journals Substrate Type And Pretreatment Type Effects On VFA Production

2021 ◽  
Author(s):  
Gamsathvani Sivanantham
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Anaerobic Digestion ◽  
Food Waste ◽  
Acid Production ◽  
Volatile Fatty Acid ◽  
Volatile Fatty Acids ◽  
Carbohydrate Content ◽  
Substrate Type ◽  
Fatty Acid Production

In the following report, the effects of substrate type and pretreatment type on the production of volatile fatty acids during anaerobic digestion was analyzed. First, the effects on volatile fatty acid production due to substrate type were investigated. It was determined that wastes that consisted of higher concentrations of carbohydrates would generate higher concentrations of volatile fatty acids during anerobic digestion. In the investigation it was evident that food waste had higher volatile fatty acid yields compared to sludge due to the carbohydrate content. Furthermore, the effects on volatile fatty acid production due to pretreatment type were also investigated. Thermal, chemical, physical and combined pretreatments were analysed. The various types of the different pretreatments and their effects on volatile fatty acid production during anaerobic digestion were discussed in depth.

scholarly journals Substrate Type And Pretreatment Type Effects On VFA Production

2021 ◽  
Author(s):  
Gamsathvani Sivanantham
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Anaerobic Digestion ◽  
Food Waste ◽  
Acid Production ◽  
Volatile Fatty Acid ◽  
Volatile Fatty Acids ◽  
Carbohydrate Content ◽  
Substrate Type ◽  
Fatty Acid Production

In the following report, the effects of substrate type and pretreatment type on the production of volatile fatty acids during anaerobic digestion was analyzed. First, the effects on volatile fatty acid production due to substrate type were investigated. It was determined that wastes that consisted of higher concentrations of carbohydrates would generate higher concentrations of volatile fatty acids during anerobic digestion. In the investigation it was evident that food waste had higher volatile fatty acid yields compared to sludge due to the carbohydrate content. Furthermore, the effects on volatile fatty acid production due to pretreatment type were also investigated. Thermal, chemical, physical and combined pretreatments were analysed. The various types of the different pretreatments and their effects on volatile fatty acid production during anaerobic digestion were discussed in depth.

Sign in / Sign up

Export Citation Format

Share Document