Low ambient temperature elevates plasma triiodothyronine concentrations while reducing digesta mean retention time and methane yield in sheep

2014 ◽  
Vol 99 (3) ◽  
pp. 483-491 ◽  
Author(s):  
M. C. Barnett ◽  
J .R. McFarlane ◽  
R. S. Hegarty
Keyword(s):  
Ambient Temperature ◽  
Retention Time ◽  
Methane Yield ◽  
Mean Retention Time ◽  
Plasma Triiodothyronine ◽  
Low Ambient Temperature

scholarly journals Effect of dietary orange peel extract on physiological, biochemical, and metabolic responses of Japanese quail reared under low ambient temperature

2016 ◽  
Vol 40 ◽  
pp. 288-297 ◽  
Author(s):  
Mehmet ÇİFTÇİ ◽  
Ülkü Gülcihan ŞİMŞEK ◽  
Bestami DALKILIÇ ◽  
Mehmet Ali AZMAN ◽  
Ökkeş YILMAZ ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Japanese Quail ◽  
Orange Peel ◽  
Metabolic Responses ◽  
Orange Peel Extract ◽  
Peel Extract ◽  
Low Ambient Temperature

Acting mechanism of low ambient temperature on wall-impinging diesel spray ignition at an extensive range

Fuel ◽  
2021 ◽  
Vol 304 ◽  
pp. 121344
Author(s):  
Yaozong Li ◽  
Xiangrong Li ◽  
Weiren Cao ◽  
Zhicheng Shi ◽  
Yaqing Bo ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Diesel Spray ◽  
Extensive Range ◽  
Acting Mechanism ◽  
Low Ambient Temperature

Effect of hydraulic retention time on pretreatment of blended municipal sludge

2011 ◽  
Vol 64 (4) ◽  
pp. 967-973
Author(s):  
S. Koyunluoglu-Aynur ◽  
R. Riffat ◽  
S. Murthy
Keyword(s):  
Retention Time ◽  
Volatile Fatty Acids ◽  
Hydraulic Retention Time ◽  
Operating Conditions ◽  
Methane Yield ◽  
Municipal Sludge ◽  
Volatile Solids ◽  
Significant Difference ◽  
Autothermal Thermophilic Aerobic Digestion ◽  
Pretreatment Processes

The objective of the present work was to evaluate the effect of hydraulic retention time (HRT) on hydrolysis and acidogenesis for the pretreatment processes: acid phase digestion (APD) and autothermal thermophilic aerobic digestion (ATAD) using blended municipal sludge. The effect of the different pretreatment steps on mesophilic anaerobic digestion (MAD) was evaluated in terms of methane yield, keeping the operating conditions of the MAD the same for all systems. Best operating conditions for both APD and ATAD were observed for 2.5 d HRT with high total volatile fatty acids (tVFA), and the highest methane yield observed for MAD. No significant difference was observed between the two processes in terms of overall volatile solids (VS) reduction with same total HRT. The autothermal process produced heat of 14,300 J/g VS removed from hydrolytic and acetogenic reactions without compromising overall methane yields when the HRT was 2.5 d or lower and the total O2 used was 0.10 m3 O2/g VS added or lower. However, the process needs the input of oxygen and engineering analysis should balance these differences when considering the relative merits of the two pretreatment processes. This is the first study of its kind directly comparing these two viable pretreatment processes with the same sludge.

Analysis of the autothermal operability of the Sabatier reaction in a heat-recirculating microreactor using CFD

2019 ◽  
Vol 4 (10) ◽  
pp. 1823-1833 ◽  
Author(s):  
Aswathy K. Raghu ◽  
Niket S. Kaisare
Keyword(s):  
Ambient Temperature ◽  
Temperature Profile ◽  
Methane Yield ◽  
Stable Operation ◽  
Heat Recirculation ◽  
Sabatier Reaction ◽  
Micro Reactor

The Sabatier reaction in a U-bend micro-reactor benefits from a favourable temperature profile owing to heat recirculation, which improves methane yield and enables stable operation even with feed at ambient temperature.

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