TY - JOUR
T1 - Producción de biogás mediante codigestión de estiércol bovino y residuos de cosecha de tomate (Solanum lycopersicum l.)
AU - Castro Rivera, Rigoberto
AU - Solís Oba, María Myrna
AU - Chicatto Gasperín, Vanesa
AU - Solís Oba, Aída
N1 - Publisher Copyright:
© 2020, Centro de Ciencias de la Atmosfera, UNAM. All rights reserved.
PY - 2020
Y1 - 2020
N2 - Anaerobic digestion is an alternative to reduce pollution problems due to the open sky disposal of waste, such as manures and agricultural residues; besides, it is an option for the generation of alternative energies due to biogas production. The aim of this work was to evaluate the co-digestion of cattle waste with tomato crop residues. The experimental design was completely randomized under a 2 × 2 factorial arrangement, considering two levels of manure (20 and 50 %) and two pH initial levels (6.8 and 7.5). It was found that by adjusting the pH to 7.5 using 20 or 50 % manure, the total production of biogas and methane increased 100 %, compared to that obtained in di-gesters starting at pH 6.8. In digesters where 50 % of manure and 50 % of tomato crop residues were used, the methane content reached 45 %, which is the minimum to be used as combustible. The use of 20 % manure and 80% tomato crop residues produced 35 to 37 % methane. The 50:50 proportion manure:tomato residues best treatment was in with pH adjust at 7.5 . The resulting digestate did not present phytotoxicity in the test with lettuce seeds, and its coliform and salmonella was below those indicated in standard NOM 004-SEMARNAT.
AB - Anaerobic digestion is an alternative to reduce pollution problems due to the open sky disposal of waste, such as manures and agricultural residues; besides, it is an option for the generation of alternative energies due to biogas production. The aim of this work was to evaluate the co-digestion of cattle waste with tomato crop residues. The experimental design was completely randomized under a 2 × 2 factorial arrangement, considering two levels of manure (20 and 50 %) and two pH initial levels (6.8 and 7.5). It was found that by adjusting the pH to 7.5 using 20 or 50 % manure, the total production of biogas and methane increased 100 %, compared to that obtained in di-gesters starting at pH 6.8. In digesters where 50 % of manure and 50 % of tomato crop residues were used, the methane content reached 45 %, which is the minimum to be used as combustible. The use of 20 % manure and 80% tomato crop residues produced 35 to 37 % methane. The 50:50 proportion manure:tomato residues best treatment was in with pH adjust at 7.5 . The resulting digestate did not present phytotoxicity in the test with lettuce seeds, and its coliform and salmonella was below those indicated in standard NOM 004-SEMARNAT.
KW - Alternative energies
KW - Digestate
KW - Methane
UR - http://www.scopus.com/inward/record.url?scp=85089368825&partnerID=8YFLogxK
U2 - 10.20937/RICA.53545
DO - 10.20937/RICA.53545
M3 - Artículo
AN - SCOPUS:85089368825
SN - 0188-4999
VL - 36
SP - 529
EP - 539
JO - Revista Internacional de Contaminacion Ambiental
JF - Revista Internacional de Contaminacion Ambiental
IS - 3
ER -