Phosphoric acid-activated biochar derived from sunflower seed husk: Selective antibiotic adsorption behavior and mechanism

Thi-Kim-Tuyen Nguyen; Thanh-Binh Nguyen; Wei-Hsin Chen; Chiu-Wen Chen; Anil Kumar Patel; Xuan-Thanh Bui; Linjer Chen; Reeta Rani Singhania; Cheng-Di Dong

doi:10.1016/j.biortech.2023.128593

Phosphoric acid-activated biochar derived from sunflower seed husk: Selective antibiotic adsorption behavior and mechanism

Bioresour Technol. 2023 Mar:371:128593. doi: 10.1016/j.biortech.2023.128593. Epub 2023 Jan 9.

Authors

Thi-Kim-Tuyen Nguyen¹, Thanh-Binh Nguyen¹, Wei-Hsin Chen², Chiu-Wen Chen³, Anil Kumar Patel¹, Xuan-Thanh Bui⁴, Linjer Chen⁵, Reeta Rani Singhania¹, Cheng-Di Dong⁶

Affiliations

¹ Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan.
² Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan; Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411, Taiwan.
³ Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan.
⁴ Key Laboratory of Advanced Waste Treatment Technology, Ho Chi Minh City University of Technology (HCMUT), Vietnam National University Ho Chi Minh (VNU-HCM), Thu Duc City, Ho Chi Minh City 700000, Viet Nam; Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, Viet Nam.
⁵ Key Laboratory of Advanced Waste Treatment Technology, Ho Chi Minh City University of Technology (HCMUT), Vietnam National University Ho Chi Minh (VNU-HCM), Thu Duc City, Ho Chi Minh City 700000, Viet Nam.
⁶ Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan. Electronic address: cddong@nkust.edu.tw.

PMID: 36634881
DOI: 10.1016/j.biortech.2023.128593

Abstract

In recent years, the unnecessary overuse of antibiotics has increased globally, resulting in antibiotic contamination of water, which has become a significant environmental concern. This study aims to examine the adsorption behavior of antibiotics (Tetracycline TC, Ciprofloxacin CIP, Ibuprofen IBP, and Sulfamethoxazole SMX) onto H₃PO₄-activated sunflower seed husk biochar (PSF). The results demonstrated that H₃PO₄ could enhance the specific surface area (378.8 m²/g) and create a mesoporous structure of biochar. The adsorption mechanism was investigated using kinetic models, isotherms, and thermodynamics. The maximum adsorption capacities (q_max) of TC, CIP, SMX, and IBP are 429.3, 361.6, 251.3, and 251.1 mg g^-1, respectively. The adsorption mechanism of antibiotics on PSF was governed by complex mechanisms, including chemisorption, external diffusion, and intraparticle diffusion. This research provides an environmentally friendly method for utilizing one of the agricultural wastes for the removal of a variety of antibiotics from the aquatic environment.

Keywords: Adsorption; Antibiotic; Biochar; H(3)PO(4); Sunflower seed husk.

MeSH terms

Adsorption
Anti-Bacterial Agents
Charcoal / chemistry
Helianthus*
Kinetics
Sulfamethoxazole
Water Pollutants, Chemical* / analysis

Substances

Anti-Bacterial Agents
biochar
phosphoric acid
Charcoal
Sulfamethoxazole
Water Pollutants, Chemical