Performance and kinetic evaluation of the semi-continuous anaerobic digestion of sunflower oil cake pretreated with ultrasound

2013 ◽  
Vol 48 (12) ◽  
pp. 1548-1556 ◽  
Author(s):  
Victoria Fernández-Cegrí ◽  
Francisco Raposo ◽  
Rafael Borja
Keyword(s):  
Anaerobic Digestion ◽  
Sunflower Oil ◽  
Kinetic Evaluation ◽  
Sunflower Oil Cake

Anaerobic digestion of sunflower oil cake: a current overview

2013 ◽  
Vol 67 (2) ◽  
pp. 410-417 ◽  
Author(s):  
M. A. De la Rubia ◽  
V. Fernández-Cegrí ◽  
F. Raposo ◽  
R. Borja
Keyword(s):  
Anaerobic Digestion ◽  
Sunflower Oil ◽  
Physical Structure ◽  
Methane Yield ◽  
Organic Loading Rate ◽  
Biochemical Methane Potential ◽  
In Series ◽  
Methane Potential ◽  
Bmp Test ◽  
Sunflower Oil Cake

Due to the chemical and physical structure of a lignocellulosic biomass, its anaerobic digestion (AD) is a slow and difficult process. In this paper, the results obtained from a batch biochemical methane potential (BMP) test and fed-batch mesophilic AD assays of sunflower oil cake (SuOC) are presented. Taking into account the low digestibility shown during one-stage experiments the methane yield decreased considerably after increasing the organic loading rate (OLR) from 2 to 3 g VS L−1 d−1, SuOC was subjected to a two-stage AD process (hydrolytic-acidogenic and methanogenic stages), in two separate reactors operating in series where the methanogenic stage became acidified (with >1,600 mg acetic acid L−1) at an OLR as low as 2 g VS L−1 d−1. More recently, BMP assays were carried out after mechanical, thermal, and ultrasonic pre-treatments to determine the best option on the basis of the methane yield obtained.

Kinetic evaluation on the degradation process of anaerobic digestion fed with piggery wastewater at different OLRs

2016 ◽  
Vol 113 ◽  
pp. 123-132 ◽  
Author(s):  
Qunpeng Cheng ◽  
Zhihua Chen ◽  
Fang Deng ◽  
Yuhua Liao ◽  
Bo Xiao ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Degradation Process ◽  
Piggery Wastewater ◽  
Kinetic Evaluation

A note on the use of the chicken to predict protein digestibility in the small intestine of sheep

1989 ◽  
Vol 48 (2) ◽  
pp. 475-479 ◽  
Author(s):  
P. H. Henning ◽  
J. H. F. Meyer ◽  
J. J. Prinsloo
Keyword(s):  
Small Intestine ◽  
Nitrogen Content ◽  
Sunflower Oil ◽  
Fish Meal ◽  
Protein Digestibility ◽  
Close Correlation ◽  
Cottonseed Oil ◽  
True Digestibility ◽  
Protein Rich ◽  
Sunflower Oil Cake

The true digestibility of protein from diets containing one of the protein-rich foodstuffs, sunflower oil cake, cottonseed oil cake, maize gluten meal and fish meal, was determined in chickens and in the small intestine of sheep. With the exception of maize gluten meal, a close correlation was found between digestibility in the two species (r = +0·98; P < 0·05) and in the sheep small intestine between the true digestibility of utilizable nitrogen and acid-detergent insoluble nitrogen content of the diet (r = -0·96; P < 0·05).

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