Abstract

CARILLO-NIEVES, Danay; ZUMALACARREGUI-DE CARDENAS, Lourdes; FRANCO-RICO, Rafael  and  SARVARI-HORVATH, Ilona. Kinetic of biogas production from oil palm empty fruit bunches. Dyna rev.fac.nac.minas [online]. 2014, vol.81, n.187, pp.96-101. ISSN 0012-7353.  https://doi.org/10.15446/dyna.v81n186.40570.

The production process of oil from Elaeis guineensis palm produces an organic residual. Oil palm empty fruit bunches (OPEFB) are one of the main waste products, representing 7%. Up to now, OPEFB aren't totally used, being an environmental problem. In this paper, the employment of OPEFB pretreated with NaOH is studied as a raw material for biogas production. The pretreatment time (PT) of the OPEFB influences directly on biogas production achieving conversions of volatile solids to biogas of 96% for PT=60 min and 29 days of reaction. Biogas production is adjusted to a first order kinetic law, with kinetic constants for the generation of CH₄ (0,108 d^-1) and CO₂ (0,107 d^-1) at the reactor operating temperature (55°C). Finally, a general model is obtained to estimate volatile solids conversion to biogas as a function of pretreatment time and of the residence time inside the reactor.

Keywords : Oil palm empty fruit bunches; Biogas; Methane production; Process kinetic.

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