Process Simulation and Economic Assessment of Hydrothermal Pretreatment and Enzymatic Hydrolysis of Multi-feedstock Lignocellulose - Separate vs Combined Processing

Muhammad Tahir Ashraf, Jens Ejbye Schmidt*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Biorefinery based on multi-feedstock lignocellulose can be viable where a sustainable supply of a single substrate is limited, for example in arid regions. Processing of mixed feedstocks has been studied in lab scale, however, its economics are less studied. In this study, an economic comparison was made between separate and combined (mixed) processing approaches for multi-feedstock lignocellulose for the production of monomeric sugars. This modular approach of focusing on sugar platform makes the results applicable for many applications using the sugars as feedstock. Feedstock considered in this study were the green and woody lignocellulose residues: Bermuda grass, Jasmine hedges, and date palm fronds. Results showed that, at an identical total feed rate, combined processing was more advantageous as compared to separate processing. A further sensitivity analysis on mixed combined processing showed that the cellulase enzyme price and feed price are the two major factors affecting the production cost.
Original languageEnglish
JournalBioresource Technology
Volume249
Pages (from-to)835-843
ISSN0960-8524
DOIs
Publication statusPublished - 2018
Externally publishedYes

Keywords

  • Hydrothermal pretreatment
  • Enzymatic hydrolysis
  • Process simulation
  • Lignocellulose
  • Economic

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