Title:
Continuous Versus Batch Acid Pretreatment in Lignocellulosic Ethanol Production. What is Best?
Author(s):
Martínez-Victoria, S., Sánchez, A.
Document(s):
Paper
Poster
Abstract:
This paper explores the role of operation mode (i.e. batch or continuous) of the acid pretreatment stage in bioethanol production using lignocellulosic biomass as feedstock. Sugar recovery after pretreatment, lignocellulosic ethanol (LE) yield, electricity production, and total production cost (TPC) were compared for batch and continuous isothermal pretreatment modes of operation as a function of pretreatment residence time and sulphuric acid percentage (w/w). The study employed a 500 ton/day dry basis sugar cane bagasse biorefinery for a techno-economic analysis. Residence time and acid percentage were shown to be a major factor influencing xylose reaction time, yield and productivity. Results show a TPC of 0.82 USD/l using the continuous pretreatment mode, which is 13% lower than its batch counterpart. However, the biorefinery using the batch reactors produce 3% more LE due to higher xylose yield in the batch reactors.
Keywords:
bioethanol, biorefinery, pretreatment, yield, techno-economic analysis
Topic:
Biomass Technologies and Conversion to Intermediate Bioenergy Carriers and Products of the Bioeconomy
Subtopic:
Biorefineries
Event:
28th European Biomass Conference and Exhibition
Session:
3BV.4.20
Pages:
632 - 637
ISBN:
978-88-89407-20-2
Paper DOI:
10.5071/28thEUBCE2020-3BV.4.20
Price:
FREE
