Upcycling crab shell waste into biochar for treatment of palm oil mill effluent via microwave pyrolysis and activation.

Autor: Yang Y; Henan Province International Collaboration Lab of Forest Resources Utilization, School of Forestry, Henan Agricultural University, Zhengzhou, 450002, China; Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030, Terengganu, Kuala Nerus, Malaysia., Foong SY; Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030, Terengganu, Kuala Nerus, Malaysia., He Y; Henan Province International Collaboration Lab of Forest Resources Utilization, School of Forestry, Henan Agricultural University, Zhengzhou, 450002, China. Electronic address: heyifeng310@163.com., Liew RK; NV WESTERN PLT, No. 208B, Second Floor, Macalister Road, Georgetown, 10400, Penang, Malaysia., Ma NL; BIOSES Research Interest Group, Faculty of Science & Marine Environment, 21030, Universiti Malaysia Terengganu, Malaysia; Center for Global Health Research (CGHR), Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, India., Yek PNY; Centre for Research of Innovation and Sustainable Development, University of Technology Sarawak, No.1, Jalan Universiti, 96000, Sibu, Sarawak, Malaysia. Electronic address: peter.yek@uts.edu.my., Ge S; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China., Naushad M; Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia., Lam SS; Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030, Terengganu, Kuala Nerus, Malaysia; Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan, Taiwan. Electronic address: lam@umt.edu.my.
Jazyk: angličtina
Zdroj: Environmental research [Environ Res] 2024 May 01; Vol. 248, pp. 118282. Date of Electronic Publication: 2024 Jan 29.
DOI: 10.1016/j.envres.2024.118282
Abstrakt: The escalating consumer demand for crabs results in a growing amount of waste, including shells, claws, and other non-edible parts. The resulting crab shell waste (CSW) is disposed of via incineration or landfills which causes environmental pollution. CSW represents a potential biological resource that can be transformed into valuable resources via pyrolysis technique. In this study, microwave pyrolysis of CSW using self-purging, vacuum, and steam activation techniques was examined to determine the biochar production yield and its performance in treating palm oil mill effluent (POME). The biochar produced through microwave pyrolysis exhibits yields ranging from 50 to 61 wt%, showing a hard texture, low volatile matter content (≤34.1 wt%), and high fixed carbon content (≥58.3 wt%). The KOH-activated biochar demonstrated a surface area of up to 177 m 2 /g that is predominantly composed of mesopores, providing a good amount of adsorption sites for use as adsorbent. The biochar activated with steam removed 8.3 mg/g of BOD and 42 mg/g of COD from POME. The results demonstrate that microwave pyrolysis of CSW is a promising technology to produce high-quality biochar as an adsorbent for POME treatment.
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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