In situ biogas upgrading via cathodic biohydrogen using mitigated ammonia nitrogen during the anaerobic digestion of Taihu blue algae in an integrated bioelectrochemical system (BES)

2021 ◽  
Vol 341 ◽  
pp. 125902
Author(s):  
Huixing Wu ◽  
Han Wang ◽  
Yi Zhang ◽  
Georgia Antonopoulou ◽  
Ioanna Ntaikou ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Ammonia Nitrogen ◽  
Bioelectrochemical System ◽  
Biogas Upgrading

scholarly journals H2 addition through a submerged membrane for in-situ biogas upgrading in the anaerobic digestion of sewage sludge

2019 ◽  
Vol 280 ◽  
pp. 1-8 ◽  
Author(s):  
Natalia Alfaro ◽  
María Fdz-Polanco ◽  
Fernando Fdz-Polanco ◽  
Israel Díaz
Keyword(s):  
Anaerobic Digestion ◽  
Sewage Sludge ◽  
Biogas Upgrading ◽  
H2 Addition

scholarly journals In-situ biogas upgrading during anaerobic digestion of food waste amended with walnut shell biochar at bench scale

2017 ◽  
Vol 35 (6) ◽  
pp. 669-679 ◽  
Author(s):  
Jessica L Linville ◽  
Yanwen Shen ◽  
Patricia A Ignacio-de Leon ◽  
Robin P Schoene ◽  
Meltem Urgun-Demirtas
Keyword(s):  
Anaerobic Digestion ◽  
Food Waste ◽  
Potassium Concentration ◽  
Operating Mode ◽  
Ash Content ◽  
Walnut Shell ◽  
Process Stability ◽  
Biogas Upgrading ◽  
Bench Scale

A modified version of an in-situ CO2 removal process was applied during anaerobic digestion of food waste with two types of walnut shell biochar at bench scale under batch operating mode. Compared with the coarse walnut shell biochar, the fine walnut shell biochar has a higher ash content (43 vs. 36 wt%) and higher concentrations of calcium (31 vs. 19 wt% of ash), magnesium (8.4 vs. 5.6 wt% of ash) and sodium (23.4 vs. 0.3 wt% of ash), but a lower potassium concentration (0.2 vs. 40% wt% of ash). The 0.96–3.83 g biochar (g VSadded)-1 fine walnut shell biochar amended digesters produced biogas with 77.5%–98.1% CH4 content by removing 40%–96% of the CO2 compared with the control digesters at mesophilic and thermophilic temperature conditions. In a direct comparison at 1.83 g biochar (g VSadded)-1, the fine walnut shell biochar amended digesters (85.7% CH4 content and 61% CO2 removal) outperformed the coarse walnut shell biochar amended digesters (78.9% CH4 content and 51% CO2 removal). Biochar addition also increased alkalinity as CaCO3 from 2800 mg L-1 in the control digesters to 4800–6800 mg L-1, providing process stability for food waste anaerobic digestion.

High efficiency in-situ biogas upgrading in a bioelectrochemical system with low energy input

2021 ◽  
Vol 197 ◽  
pp. 117055
Author(s):  
Chuanqi Liu ◽  
Jiewen Xiao ◽  
Haoyong Li ◽  
Qian Chen ◽  
Dezhi Sun ◽  
...  
Keyword(s):  
Energy Input ◽  
High Efficiency ◽  
Low Energy ◽  
Bioelectrochemical System ◽  
Biogas Upgrading

scholarly journals Producing pipeline-quality biomethane via anaerobic digestion of sludge amended with corn stover biochar with in-situ CO2 removal

2015 ◽  
Vol 158 ◽  
pp. 300-309 ◽  
Author(s):  
Yanwen Shen ◽  
Jessica L. Linville ◽  
Meltem Urgun-Demirtas ◽  
Robin P. Schoene ◽  
Seth W. Snyder
Keyword(s):  
Anaerobic Digestion ◽  
Corn Stover ◽  
Co2 Removal

In-situ prevention of hydrogen sulfide formation during anaerobic digestion using zinc oxide nanowires

2018 ◽  
Vol 6 (1) ◽  
pp. 110-118 ◽  
Author(s):  
Robert Lupitskyy ◽  
Dania Alvarez-Fonseca ◽  
Zachary D. Herde ◽  
Jagannadh Satyavolu
Keyword(s):  
Zinc Oxide ◽  
Hydrogen Sulfide ◽  
Anaerobic Digestion ◽  
Zinc Oxide Nanowires ◽  
Oxide Nanowires
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