A waste-to-wealth conversion of plastic bottles into effective carbon-based adsorbents for removal of tetracycline antibiotic from water.

Autor: Duong LTK; Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Viet Nam; Department of Chemical Engineering and Food Technology, Nong Lam University, Ho Chi Minh City 700000, Viet Nam., Nguyen TTT; Department of Chemical Engineering and Food Technology, Nong Lam University, Ho Chi Minh City 700000, Viet Nam., Nguyen LM; Institute of Chemical Technology, Vietnam Academy of Science and Technology, 1A TL29, District 12, Ho Chi Minh City 700000, Viet Nam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi 100000, Viet Nam., Hoang TH; Amazon Corporate Headquarters, 440 Terry Ave North, Seattle, WA 98109-5210, United States., Nguyen DTC; Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Viet Nam. Electronic address: ntcduyen@ntt.edu.vn., Tran TV; Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Viet Nam. Electronic address: tranuv@gmail.com.
Jazyk: angličtina
Zdroj: Environmental research [Environ Res] 2024 Aug 15; Vol. 255, pp. 119144. Date of Electronic Publication: 2024 May 14.
DOI: 10.1016/j.envres.2024.119144
Abstrakt: Currently, plastic waste and antibiotic wastewater are two of the most critical environmental problems, calling for urgent measures to take. A waste-to-wealth strategy for the conversion of polyethylene terephthalate (PET) plastic bottles into value-added materials such as carbon composite is highly recommended to clean wastewater contaminated by antibiotics. Inspired by this idea, we develop a novel PET-AC-ZFO composite by incorporating PET plastic-derived KOH-activated carbon (AC) with ZnFe 2 O 4 (ZFO) particles for adsorptive removal of tetracycline (TTC). PET-derived carbon (PET-C), KOH-activated PET-derived carbon (PET-AC), and PET-AC-ZFO were characterized using physicochemical analyses. Central composite design (CCD) was used to obtain a quadratic model by TTC concentration (K), adsorbent dosage (L), and pH (M). PET-AC-ZFO possessed micropores (d ≈ 2 nm) and exceptionally high surface area of 1110 m 2  g -1 . Nearly 90% TTC could be removed by PET-AC-ZFO composite. Bangham kinetic and Langmuir isotherm were two most fitted models. Theoretical maximum TTC adsorption capacity was 45.1 mg g -1 . This study suggested the role of hydrogen bonds, pore-filling interactions, and π-π interactions as the main interactions of the adsorption process. Thus, a strategy for conversion of PET bottles into PET-AC-ZFO can contribute to both plastic recycling and antibiotic wastewater mitigation.
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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