Role of organic loading rate in bioenergy generation from palm oil mill effluent in a two-stage up-flow anaerobic sludge blanket continuous-stirred tank reactor

2017 ◽  
Vol 142 ◽  
pp. 3044-3049 ◽  
Author(s):  
Santhana Krishnan ◽  
Lakhveer Singh ◽  
Mimi Sakinah ◽  
Sveta Thakur ◽  
Zularisam A. Wahid ◽  
...  
Keyword(s):  
Loading Rate ◽  
Organic Loading Rate ◽  
Anaerobic Sludge ◽  
Continuous Stirred Tank Reactor ◽  
Organic Loading ◽  
Bioenergy Generation ◽  
Continuous Stirred Tank ◽  
Palm Oil Mill ◽  
Anaerobic Sludge Blanket

scholarly journals Predominance of syntrophic bacteria, Methanosaeta and Methanoculleus in a two-stage up-flow anaerobic sludge blanket reactor treating coffee processing wastewater at high organic loading rate

2018 ◽  
Vol 268 ◽  
pp. 158-168 ◽  
Author(s):  
Wilmar Alirio Botello Suárez ◽  
Juliana da Silva Vantini ◽  
Rose Maria Duda ◽  
Poliana Fernanda Giachetto ◽  
Leandro Carrijo Cintra ◽  
...  
Keyword(s):  
Loading Rate ◽  
Organic Loading Rate ◽  
Anaerobic Sludge ◽  
Organic Loading ◽  
Two Stage ◽  
Syntrophic Bacteria ◽  
Anaerobic Sludge Blanket

Start-Up Strategy to Achieve Excellent Efficiency of Degradation Acetate,Ethanol and Propionate in UASB

2011 ◽  
Vol 71-78 ◽  
pp. 2103-2106
Author(s):  
Ming Yue Zheng ◽  
Ming Xia Zheng ◽  
Kai Jun Wang ◽  
Hai Yan
Keyword(s):  
Loading Rate ◽  
Anaerobic Treatment ◽  
Upflow Anaerobic Sludge Blanket ◽  
Organic Loading Rate ◽  
Anaerobic Sludge ◽  
Organic Loading ◽  
Metabolic Intermediate ◽  
Loading Rates ◽  
Start Up ◽  
Anaerobic Sludge Blanket

The performance of upflow anaerobic sludge blanket (UASB) fed with three metabolic intermediate (acetate, ethanol, and propionate) respectively was studied. The degradation of metabolic intermediate were investigated to discuss the reason for propionate inhibition problem in anaerobic treatment. The hydraulic retention time (HRT) in the reactors started with 8.0h.The yield rate of biogas were 237ml/gCOD, 242ml/gCOD, 218ml/gCOD for acetate, ethanol and propionate, respectively when finishing start-up under OLR of 5.0 kgCOD/(m3·d) (HRT=9.6h).The HRT remained constant 9.6h,and the substrate concentration was gradually increased from 1,000 to 16,000mg/L as COD,and the organic loading rates(OLR) was from 3.0 to 40.0 kgCOD/(m3·d).The maximum propionate concentration was 41.6 gHPr-COD/L at the organic loading rate of 43.9 kgCOD/(m3·d) (HRT, 9.6h) as well as acetate and ethanol.

Influence of organic loading rates on the production of methane from anaerobic digestion of sewage concentrate

2018 ◽  
Vol 29 (7) ◽  
pp. 1130-1141 ◽  
Author(s):  
Emmanuel Alepu Odey ◽  
Kaijun Wang ◽  
Zifu Li ◽  
Ruiling Gao
Keyword(s):  
Methane Production ◽  
Loading Rate ◽  
Biogas Production ◽  
Stirred Tank ◽  
Organic Loading Rate ◽  
Continuous Stirred Tank Reactor ◽  
Organic Loading ◽  
Stirred Tank Reactor ◽  
Tank Reactor ◽  
Continuous Stirred Tank

This study investigated the efficiency of biogas production from sewage concentrate through anaerobic digestion. A continuous stirred tank reactor with a 900-mL working volume was used. The experiment was designed to investigate the influence of organic loading rate on the efficiency of biogas production and to determine the most suitable organic loading rate condition for methane production from sewage concentrate by using continuous stirred tank reactor. The reactor was operated at different organic loading rates of 1.8, 0.8, and 0.6 gCOD/(L.d). The methane composition of the biogas produced from the treatment organic loading rate (OLR). The beginning of the experiment recorded low methane production because of the high organic loading rate. However, the later part of the experiment recorded high and stable biogas production because of the relatively low OLR. Results suggested that a 0.6 gCOD/(L.d) OLR was the most efficient setup parameter for ideal methane production from sewage concentrate by using continuous stirred tank reactor.

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