Title:
Sustainability Analysis of Two Biochemical Platform Biorefineries for Lignocellulosic Biofuels Production
Author(s):
Magaña, G., Solis, M., Partida, I., Sanchez, S., Sanchez, A.
Document(s):
Paper
Abstract:
This work presents the environmental and economic sustainability analysis of two biorefineries for bioethanol and electricity co-production. The first scheme is a bioethanol production facility using a conventional biochemical platform named Single Product Biorefinery (SPB). The other one is a multi-input multiproduct scheme (MPB) that produces bioethanol from cellulose and hydrogen and biogas using the waste streams of the dairy (cheese whey) and tequila (vinasses) industries. Both schemes use wheat straw as feedstock and the plant capacity is 500 ton/day. In the MPB scheme an additional stream (cheese whey) is included for hydrogen production in a dark fermentation stage and the vinasses stream is fed to the waste water treatment to enhance the biogas production. Six indicators for each domain (environmental and economic) were evaluated. In general, the biggest impacts were obtained for the MPB scheme. The “End use Energy Ratio” (EER), the “total production cost” (TPC) and the “yield” indicators were the most important contributors to the sustainability. The SPB is the most sustainable scheme with the largest bioethanol production, the cheapest CTP and the highest EER, and a global sustainability value of -2.59E-02 USD/MJout. Deriving the pentoses stream to hydrogen production decreases the MPB scheme sustainability (-7.39E-02 USD/MJout).
Keywords:
bioethanol, biofuel, economics, sustainability, environmental impacts
Topic:
Biomass Policies, Markets and Sustainability
Subtopic:
Sustainability assessment and criteria
Event:
23rd European Biomass Conference and Exhibition
Session:
4AV.1.26
Pages:
1492 - 1497
ISBN:
978-88-89407-516
Paper DOI:
10.5071/23rdEUBCE2015-4AV.1.26
Price:
FREE
