Biphasic pretreatment excels over conventional sulfuric acid in pinewood biorefinery: An environmental analysis.

Autor: Khounani Z; Department Electrical Engineering, College of Engineering (CoE), Institute of Energy Infrastructure (IEI), Universiti Tenega Nasional (UNITEN), Jalan IKRAM-UNITEN, Selangor, Malaysia., Abdul Razak NN; Department Electrical Engineering, College of Engineering (CoE), Institute of Energy Infrastructure (IEI), Universiti Tenega Nasional (UNITEN), Jalan IKRAM-UNITEN, Selangor, Malaysia. Electronic address: normy@uniten.edu.my., Hosseinzadeh-Bandbafha H; Biofuel Research Team (BRTeam), Terengganu, Malaysia., Madadi M; Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China., Sun F; Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China., Mohammadi P; Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia., Mahlia TMI; Centre for Technology in Water and Wastewater, University of Technology Sydney, NSW, 2220, Australia., Aghbashlo M; Department of Mechanical Engineering of Agricultural Machinery, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran. Electronic address: maghbashlo@ut.ac.ir., Tabatabaei M; Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia; Department of Biomaterials, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Chennai, 600 077, India. Electronic address: meisam.tabatabaei@umt.edu.my.
Jazyk: angličtina
Zdroj: Environmental research [Environ Res] 2024 May 01; Vol. 248, pp. 118286. Date of Electronic Publication: 2024 Jan 26.
DOI: 10.1016/j.envres.2024.118286
Abstrakt: This study assesses the environmental impact of pine chip-based biorefinery processes, focusing on bioethanol, xylonic acid, and lignin production. A cradle-to-gate Life Cycle Assessment (LCA) is employed, comparing a novel biphasic pretreatment method (p-toluenesulfonic acid (TsOH)/pentanol, Sc-1) with conventional sulfuric acid pretreatment (H 2 SO 4 , Sc-2). The analysis spans biomass handling, pretreatment, enzymatic hydrolysis, yeast fermentation, and distillation. Sc-1 yielded an environmental impact of 1.45E+01 kPt, predominantly affecting human health (96.55%), followed by ecosystems (3.07%) and resources (0.38%). Bioethanol, xylonic acid, and lignin contributed 32.61%, 29.28%, and 38.11% to the total environmental burdens, respectively. Sc-2 resulted in an environmental burden of 1.64E+01 kPt, with a primary impact on human health (96.56%) and smaller roles for ecosystems (3.07%) and resources (0.38%). Bioethanol, xylonic acid, and lignin contributed differently at 22.59%, 12.5%, and 64.91%, respectively. Electricity generation was predominant in both scenarios, accounting for 99.05% of the environmental impact, primarily driven by its extensive usage in biomass handling and pretreatment processes. Sc-1 demonstrated a 13.05% lower environmental impact than Sc-2 due to decreased electricity consumption and increased bioethanol and xylonic acid outputs. This study highlights the pivotal role of pretreatment methods in wood-based biorefineries and underscores the urgency of sustainable alternatives like TsOH/pentanol. Additionally, adopting greener electricity generation, advanced technologies, and process optimization are crucial for reducing the environmental footprint of waste-based biorefineries while preserving valuable bioproduct production.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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