Effect of Biochar from Banana Peel on the Stability of Methane Production from Food Waste at Different Organic Loading Rates

2021 ◽  
Vol 31 (4) ◽  
Author(s):  
Chatchawin Nualsri ◽  
Sirawit Dangwongjaroenporn ◽  
Chakkrit Sreela-or ◽  
Thanwamas Kassanuk ◽  
Khongdet Phasinam
Keyword(s):  
Food Waste ◽  
Methane Production ◽  
Banana Peel ◽  
Organic Loading ◽  
Loading Rates ◽  
The Stability

Anaerobic digestion of food waste to volatile fatty acids and hydrogen at high organic loading rates in immersed membrane bioreactors

2020 ◽  
Vol 152 ◽  
pp. 1140-1148 ◽  
Author(s):  
Steven Wainaina ◽  
Mukesh Kumar Awasthi ◽  
Ilona Sárvári Horváth ◽  
Mohammad J. Taherzadeh
Keyword(s):  
Fatty Acids ◽  
Anaerobic Digestion ◽  
Food Waste ◽  
Volatile Fatty Acids ◽  
Membrane Bioreactors ◽  
Organic Loading ◽  
Loading Rates

Impact of goethite dosed continuous stirred tank reactor on continuous methane production at different organic loading rates

2019 ◽  
Vol 92 (2) ◽  
pp. 173-176 ◽  
Author(s):  
Zhanghong Wan ◽  
Shuchuan Peng ◽  
Xun Zhang ◽  
Jin Wang ◽  
Xiangming Li ◽  
...  
Keyword(s):  
Methane Production ◽  
Stirred Tank ◽  
Continuous Stirred Tank Reactor ◽  
Organic Loading ◽  
Stirred Tank Reactor ◽  
Tank Reactor ◽  
Loading Rates ◽  
Continuous Stirred Tank

Comparison of the biodegradability of the grey fraction of municipal solid waste of Barcelona in mesophilic and thermophilic conditions

2003 ◽  
Vol 48 (4) ◽  
pp. 21-28 ◽  
Author(s):  
S. Mace ◽  
D. Bolzonella ◽  
F. Cecchi ◽  
J. Mata-Alvarez
Keyword(s):  
Kinetic Study ◽  
Methane Production ◽  
Kinetic Constant ◽  
Order Kinetic ◽  
Organic Loading ◽  
First Order ◽  
Loading Rates ◽  
Start Up ◽  
Constant Operation ◽  
Thermophilic Conditions

The results of the start-up of two digesters in mesophilic and thermophilic conditions, together with its steady results at several organic loading rates are described. A kinetic study is also carried out which allows one to estimate the ultimate methane production, together with the first-order kinetic constant. Operation at thermophilic temperature yields better results as it allows a more loaded reactor and the methane production is slightly higher.

scholarly journals Progressive Microbial Community Networks with Incremental Organic Loading Rates Underlie Higher Anaerobic Digestion Performance

mSystems ◽  
2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Linwei Wu ◽  
Xiaoyu Shan ◽  
Si Chen ◽  
Qiuting Zhang ◽  
Qi Qi ◽  
...  
Keyword(s):  
Methane Production ◽  
Environmental Changes ◽  
Matrix Theory ◽  
Biotic Interactions ◽  
Environmental Parameters ◽  
Microbial Interactions ◽  
Microbial Interaction ◽  
Organic Loading ◽  
Loading Rates ◽  
Vs Removal

ABSTRACT Although biotic interactions among members of microbial communities have been conceived to be crucial for community assembly, it remains unclear how changes in environmental conditions affect microbial interaction and consequently system performance. Here, we adopted a random matrix theory-based network analysis to explore microbial interactions in triplicate anaerobic digestion (AD) systems, which is widely applied for organic pollutant treatments. The digesters were operated with incremental organic loading rates (OLRs) from 1.0 g volatile solids (VS)/liter/day to 1.3 g VS/liter/day and then to 1.5 g VS/liter/day, which increased VS removal and methane production proportionally. Higher resource availability led to networks with higher connectivity and shorter harmonic geodesic distance, suggestive of more intense microbial interactions and quicker responses to environmental changes. Strikingly, a number of topological properties of microbial network showed significant (P < 0.05) correlation with AD performance (i.e., methane production, biogas production, and VS removal). When controlling for environmental parameters (e.g., total ammonia, pH, and the VS load), node connectivity, especially that of the methanogenic archaeal network, still correlated with AD performance. Last, we identified the Methanothermus, Methanobacterium, Chlorobium, and Haloarcula taxa and an unclassified Thaumarchaeota taxon as keystone nodes of the network. IMPORTANCE AD is a biological process widely used for effective waste treatment throughout the world. Biotic interactions among microbes are critical to the assembly and functioning of the microbial community, but the response of microbial interactions to environmental changes and their influence on AD performance are still poorly understood. Using well-replicated time series data of 16S rRNA gene amplicons and functional gene arrays, we constructed random matrix theory-based association networks to characterize potential microbial interactions with incremental OLRs. We demonstrated striking linkage between network topological features of methanogenic archaea and AD functioning independent of environmental parameters. As the intricate balance of multiple microbial functional groups is responsible for methane production, our results suggest that microbial interaction may be an important, previously unrecognized mechanism in determining AD performance.

High-solids anaerobic co-digestion of food waste and rice husk at different organic loading rates

2015 ◽  
Vol 102 ◽  
pp. 149-153 ◽  
Author(s):  
Maliha Jabeen ◽  
Zeshan ◽  
Sohail Yousaf ◽  
Muhammad Rizwan Haider ◽  
Riffat Naseem Malik
Keyword(s):  
Rice Husk ◽  
Food Waste ◽  
High Solids ◽  
Organic Loading ◽  
Loading Rates

Role of trace elements in single and two-stage digestion of food waste at high organic loading rates

Energy ◽  
2017 ◽  
Vol 121 ◽  
pp. 185-192 ◽  
Author(s):  
M.A. Voelklein ◽  
R. O' Shea ◽  
A. Jacob ◽  
J.D. Murphy
Keyword(s):  
Trace Elements ◽  
Food Waste ◽  
Organic Loading ◽  
Two Stage ◽  
Loading Rates
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