Hydrothermal conversion of beef cattle manure can enhance energy recovery in confined feedlots

2020 ◽  
Vol 6 (4) ◽  
pp. 1125-1138 ◽  
Author(s):  
Roy Posmanik ◽  
Ran Darzi ◽  
Refael Glicksberg ◽  
Ariel Shabtay ◽  
Miri Cohen-Zinder
Keyword(s):  
Beef Cattle ◽  
Energy Recovery ◽  
Resource Recovery ◽  
Hydrothermal Liquefaction ◽  
Cattle Manure ◽  
Hydrothermal Conversion ◽  
Cattle Feedlots

A novel engineering perspective on the ability of hydrothermal liquefaction (HTL) to enhance resource recovery and maximize energy return in beef cattle feedlots.

The development in beef cattle manure of Petriellidium boydii (Shear) Malloch, a potential pathogen for man and cattle

1976 ◽  
Vol 22 (4) ◽  
pp. 552-556 ◽  
Author(s):  
R. G. Bell
Keyword(s):  
Beef Cattle ◽  
Room Temperature ◽  
Pathogenic Fungus ◽  
Health Hazard ◽  
Cattle Manure ◽  
Potential Pathogen ◽  
Cattle Feedlots

Petriellidium boydii (Allescheria boydii) dominated the mycoflora of manure samples from three beef cattle feedlots after incubation at room temperature for 4 months. The possible dangers associated with this pathogenic fungus, which causes mycotic abortion in livestock, pulmonary allescheriasis in man, and mycetomas in both man and animals, are discussed. This fungus could create a health hazard in feedlots where in situ manure decomposition is encouraged.

scholarly journals Bio-Crude Production Improvement during Hydrothermal Liquefaction of Biopulp by Simultaneous Application of Alkali Catalysts and Aqueous Phase Recirculation

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4492
Author(s):  
Komeil Kohansal ◽  
Kamaldeep Sharma ◽  
Saqib Sohail Toor ◽  
Eliana Lozano Sanchez ◽  
Joscha Zimmermann ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Hydrothermal Liquefaction ◽  
Biofuel Production ◽  
Hydrothermal Conversion ◽  
Simultaneous Application ◽  
Heating Value ◽  
Production Improvement ◽  
Catalytic Experiment ◽  
Alkali Catalysts ◽  
Alkali Elements

This study focuses on the valorization of the organic fraction of municipal solid waste (biopulp) by hydrothermal liquefaction. Thereby, homogeneous alkali catalysts (KOH, NaOH, K2CO3, and Na2CO3) and a residual aqueous phase recirculation methodology were mutually employed to enhance the bio-crude yield and energy efficiency of a sub-critical hydrothermal conversion (350 °C, 15–20 Mpa, 15 min). Interestingly, single recirculation of the concentrated aqueous phase positively increased the bio-crude yield in all cases, while the higher heating value (HHV) of the bio-crudes slightly dropped. Compared to the non-catalytic experiment, K2CO3 and Na2CO3 effectively increased the bio-crude yield by 14 and 7.3%, respectively. However, KOH and NaOH showed a negative variation in the bio-crude yield. The highest bio-crude yield (37.5 wt.%) and energy recovery (ER) (59.4%) were achieved when K2CO3 and concentrated aqueous phase recirculation were simultaneously applied to the process. The inorganics distribution results obtained by ICP reveal the tendency of the alkali elements to settle into the aqueous phase, which, if recovered, can potentially boost the circularity of the HTL process. Therefore, wise selection of the alkali catalyst along with aqueous phase recirculation assists hydrothermal liquefaction in green biofuel production and environmentally friendly valorization of biopulp.

Investigations into the Beneficial Uses of Ash from the Combustion of Manure from Beef Cattle Feedlots

2010 ◽  
Author(s):  
Robert E DeOtte ◽  
B A Stewart ◽  
Anthony J Megel ◽  
Murali Darapuneni ◽  
Clay A Robinson ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Beneficial Uses ◽  
Cattle Feedlots

SURFACE AMENDMENTS TO MINIMIZE AMMONIA EMISSIONS FROM BEEF CATTLE FEEDLOTS

2001 ◽  
Vol 44 (3) ◽  
Author(s):  
Y. Shi ◽  
D. B. Parker ◽  
N. A. Cole ◽  
B. W. Auvermann ◽  
J. E. Mehlhorn
Keyword(s):  
Beef Cattle ◽  
Ammonia Emissions ◽  
Surface Amendments ◽  
Cattle Feedlots

Beef Cattle: Manure Management

2011 ◽  
pp. 83-86
Author(s):  
N. Andy Cole ◽  
Michael S. Brown ◽  
Vince Varel
Keyword(s):  
Beef Cattle ◽  
Cattle Manure ◽  
Manure Management

scholarly journals Nitrous Oxide Fluxes from a Commercial Beef Cattle Feedlot in Kansas

2014 ◽  
Vol 7 ◽  
pp. ASWR.S12841 ◽  
Author(s):  
Orlando A. Aguilar ◽  
Ronaldo Maghirang ◽  
Charles W. Rice ◽  
Steven L. Trabue ◽  
Larry E. Erickson
Keyword(s):  
Nitrous Oxide ◽  
Beef Cattle ◽  
Agricultural Soils ◽  
Environmental Concern ◽  
Surface Condition ◽  
Emission Rates ◽  
Surface Conditions ◽  
Air Temperatures ◽  
Cattle Feedlots ◽  
Cattle Feedlot

Emission of greenhouse gases, including nitrous oxide (N2O), from open beef cattle feedlots is becoming an environmental concern; however, research measuring emission rates of N2O from open beef cattle feedlots has been limited. This study was conducted to quantify N2O emission fluxes as affected by pen surface conditions, in a commercial beef cattle feedlot in the state of Kansas, USA, from July 2010 through September 2011. The measurement period represented typical feedlot conditions, with air temperatures ranging from -24 to 39°C. Static flux chambers were used to collect gas samples from pen surfaces at 0, 15, and 30 minutes. Gas samples were analyzed with a gas chromatograph and from the measured concentrations, fluxes were calculated. Median emission flux from the moist/muddy surface condition was 2.03 mg m−2 hour−1, which was about 20 times larger than the N2O fluxes from the other pen surface conditions. In addition, N2O peaks from the moist/muddy pen surface condition were six times larger than emission peaks previously reported for agricultural soils.

Hydrothermal liquefaction and gasification of biomass and model compounds: a review

2020 ◽  
Vol 22 (23) ◽  
pp. 8210-8232
Author(s):  
Chuang Yang ◽  
Shuzhong Wang ◽  
Jianqiao Yang ◽  
Donghai Xu ◽  
Yanhui Li ◽  
...  
Keyword(s):  
Hydrothermal Liquefaction ◽  
Model Compounds ◽  
Hydrothermal Conversion ◽  
Biocrude Oil

Catalytic hydrotreatment of HTL biocrude oil, SCWG of biomass, and hydrothermal conversion of model compounds are reviewed.

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