Publication detail
Pre- and Post-Treatment Assessment for the Anaerobic Digestion of Lignocellulosic Waste: P-graph
Fan, Y.V. Klemeš, J.J. Lee, C.T.
English title
Pre- and Post-Treatment Assessment for the Anaerobic Digestion of Lignocellulosic Waste: P-graph
Type
conference paper
Language
en
Original abstract
Lignocellulosic waste is one of the most abundant and potential feedstocks for anaerobic digestion (AD), but the energy efficiency is limited by the lignocellulosic composition which is recalcitrant to biodegradation. Pretreatment of feedstock and the post-treatment of biogas and digestate play a significant role in enhancing the AD efficiency as well as the product utilisation. This study aims to determine the cost-optimal pre-and post-treatment pathway for an AD of lignocellulosic waste by applying P-graph. The economic balance between the main operating cost, yield and quality of products were considered. The treatment options were overviewed followed by a case study considered a different combination of physical, chemical and biological pretreatments, biogas post-treatment (combine heat and power, fuel cell, biomethane, biofuel) and digestate treatments. A total of 9 pre-treatments for lignocellulosic waste, 2 digestate post-treatments and 9 post-treatments for biogas were evaluated in this study. Chemical pre-treatment by CaO, post-treatment by H2S removal with membrane separation for biomethane production and without the composting of digestate is suggested as the optimal treatment pathway for lignocellulosic waste.
English abstract
Lignocellulosic waste is one of the most abundant and potential feedstocks for anaerobic digestion (AD), but the energy efficiency is limited by the lignocellulosic composition which is recalcitrant to biodegradation. Pretreatment of feedstock and the post-treatment of biogas and digestate play a significant role in enhancing the AD efficiency as well as the product utilisation. This study aims to determine the cost-optimal pre-and post-treatment pathway for an AD of lignocellulosic waste by applying P-graph. The economic balance between the main operating cost, yield and quality of products were considered. The treatment options were overviewed followed by a case study considered a different combination of physical, chemical and biological pretreatments, biogas post-treatment (combine heat and power, fuel cell, biomethane, biofuel) and digestate treatments. A total of 9 pre-treatments for lignocellulosic waste, 2 digestate post-treatments and 9 post-treatments for biogas were evaluated in this study. Chemical pre-treatment by CaO, post-treatment by H2S removal with membrane separation for biomethane production and without the composting of digestate is suggested as the optimal treatment pathway for lignocellulosic waste.
Keywords in English
Biodegradation; Biogas; Energy efficiency; Feedstocks; Fuel cells; Chemical and biologicals; Chemical pre-treatment; Economic balance; Lignocellulosic wastes; Membrane separation; Optimal treatment; Potential feedstock; Quality of product; Anaerobic digestion
Released
01.05.2018
Publisher
Italian Association of Chemical Engineering - AIDIC
ISBN
978-88-95608-61-7
ISSN
2283-9216
Book
Chemical Engineering Transactions
Volume
63
Number
63
Edition number
63
Pages from–to
1–6
Pages count
6
BIBTEX
@inproceedings{BUT151703,
author="Yee Van {Fan} and Jiří {Klemeš},
title="Pre- and Post-Treatment Assessment for the Anaerobic Digestion of Lignocellulosic Waste: P-graph",
booktitle="Chemical Engineering Transactions",
year="2018",
volume="63",
number="63",
month="May",
pages="1--6",
publisher="Italian Association of Chemical Engineering - AIDIC",
isbn="978-88-95608-61-7",
issn="2283-9216"
}