Sensibility analysis of the cogeneration using biomass on life cycle assessment for palm oil biodiesel
The objective of this work is to evaluate the impact of a biomass fueled cogeneration system over the life cycle assessment (LCA) for palm oil biodiesel by introducing some residues from the oil extraction process to generate electricity from steam with high parameters and modern technologies. The appropriate use of these residues in cogeneration systems could make the process not only self-sufficient but profitable in terms of surplus energy that could be supplied to the grid, by replacing fossil sources, and it is also environmentally friendly because it reduces GHG generation. Several efficient thermal schemes for co-generation in the palm oil industry with a condensing-extraction turbine and high pressure boilers were simulated by using Gatecycle software version 5.0.1 in order to calculate the mass and the energy balances. Different sources and levels of biomass utilization were evaluated as a fuel in the boiler, considering the potential of fibers, shells, EFB and biogas produced. In all of the cases it was possible to make an estimation of the electrical energy surplus, granting energy sufficiency and satisfying the criterion of thermal parity of the process. These results were considered in the biodiesel production life cycle, energy balance and environmental impact evaluation by using SimaPro software version 7.01. The LCA was carried out from "cradle to gate", considering the stages of agricultural, extraction, refining, trans-esterification and transport for a functional unit of 1 kg of biodiesel, using for the analysis the IMPACT 2002+ method from Ecoinvent.
| Main Authors: | , , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Fedepalma
2008
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| Online Access: | https://publicaciones.fedepalma.org/index.php/palmas/article/view/1363 |
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