Abstract

MARTINEZ-HERNANDEZ, Carlos M.; OECHSNER, Hans; GARCIA-LOPEZ, Yaser  and  LOPEZ-GONZALEZ, Lisbet. Study of Enzymes Pre-Treatments in Biomasses Dedicated to Biogas Production. Rev Cie Téc Agr [online]. 2017, vol.26, n.2, pp. 55-64. ISSN 2071-0054.

This work presents a study of the influence of an enzyme pre-treatment application to different substrates utilized for biogas production. The substrates studied were biomass of agricultural origin (sorghum-R-132, sunflower JE-94, cornand dasheen) and a tavern residual (white bread). The pre-treatment consisted on the addition of one enzyme (ZY maXX XL 200) in dose of 100 µL/syringes per 350 mg substrates diluted in 30 mL of inoculum. Substrates underwent a biodigestion process and the results were compared with those obtained in absence of the enzyme pre-treatment. Increments were achieved in the maximum specific biogas yield in the substrates. The best results took place with Colocacia esculenta (1918,07 L_CH4/kgSV); bread (1792,81 L_CH4/kgSV); sunflower JE-94 (1676, 06 L_CH4/kgSV); sorghum R-132 (1145,78 L_CH4/kgSV) and corn (1139,03 L_CH4/kgSV) being obtained more than 100% increment in the maximum specific biogas yield when the treatment is used with enzymes and pig inoculum. On the other hand, it was observed that pH evolves in a similar way in substrates evaluated with enzyme treatment and without pre-treatment

Keywords : Substrate; Wastes; Agricultural origin; Bovine; swine inoculum.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )