Optimización de los procesos de co-digestión anaerobia de purín de cerdo a partir de subproductos agrícolas como co-sustratos y heces de vacuno como co-inóculo
Morazán Nuñez, Henris Jobany
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Anaerobic fermentation of the slurry allows for, i) Taking advantage of waste energy and ii) Reduce the emission of harmful (NH3) and greenhouse gases (e.g. CH4 and N2O). Generation of pig slurry, in those areas with a high concentration of pig farms (e.g. Catalonia and Aragon), became an environmental problem but also constitute abundant resource for energy-recycling. The slurry potential as a substrate for anaerobic fermentation is low, however this performance can be improved by synergic combination with other substrate as agro-industrial by-products. The objective of the present assay was to study the in vitro potential of some local by-products (i.e. wheat straw, apple pulp and sugar beet pulp) as a co-substrate and ruminant faeces as co-inoculum to optimize CH4 under anaerobic fermentation. The use of referred co-substrates improved significantly biogas and CH4 production although a negative relationship between methane production and slurry dilution was detected (4 and 6% vs. 2% slurry DM, P <0.05).
Is part of41 Jornadas de Estudio : XIV Jornadas sobre Producción Animal : 17 y 18 de mayo de 2011, Zaragoza, tomo I, p. 46-48
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Effect of slurry dilution, structural carbohydrates, and exogenous archaea supply on in vitro anaerobe fermentation and methanogens population of swine slurry Morazán Nuñez, Henris Jobany; Seradj, Ahmad Reza; Álvarez Rodríguez, Javier; Abecia, Leticia; Babot Gaspa, Daniel; Yañez-Ruiz, David R.; Balcells Terés, Joaquim (American Institute of Chemical Engineers (AIChE), 2015-01)Artificial slurry (4% dry matter) was prepared using fresh feces and urine obtained from four pregnant sows fed with commercial diet. Freeze-dried dairy cattle feces were used (external archaea) as co-inoculum (Co-i) and ...
Estudio de la evolución de las poblaciones metanógenas en la digestión anaerobia del purín y su relación con el aporte exógeno de carbohidratos estructurales o arqueas exógenas Seradj, Ahmad Reza; Morazán Nuñez, Henris Jobany; Álvarez Rodríguez, Javier; Abecia, Leticia; Babot Gaspa, Daniel; Yañez-Ruiz, David R.; Balcells Terés, Joaquim (Asociación Interprofesional para el Desarrollo Agrario, 2013)Three agricultural by products (CHO:wheat straw, apple pulp and sugar beet pulp) as substrate plus 2 levels of freeze-dried cow’s feces (C0-i: 5 and 10 %) as co-inoculum were assigned in quadruplicate during 56 days of in ...
Nutritional strategies to cope with reduced litter weight gain and total tract digestibility in lactating sows Álvarez Rodríguez, Javier; Mir, L.; Seradj, Ahmad Reza; Morazán Nuñez, Henris Jobany; Balcells Terés, Joaquim; Babot Gaspa, Daniel (Wiley, 2017-09-15)Twelve lactating sows were used to evaluate the effects of reducing dietary crude protein (CP) (14% vs. 12%) and increasing neutral detergent fibre (NDF) levels (18% vs. 22%) on litter performance, total tract ...