Preparation and characterization of a novel activated carbon from wheat dust and its adsorption mechanism for tetracycline hydrochloride--颗粒学报PARTICUOLOGY

Fu, H., Song, X., Liu, Y., Zhang, J., Zhao, J., Wang, F., . . . Zhang, H. (2025). Preparation and characterization of a novel activated carbon from wheat dust and its adsorption mechanism for tetracycline hydrochloride. Particuology, 97, 12-24. https://doi.org/10.1016/j.partic.2024.11.017

Preparation and characterization of a novel activated carbon from wheat dust and its adsorption mechanism for tetracycline hydrochloride

Hailong Fu^a, Xue Song^{a b}, Yongde Liu^{a b *}, Jie Zhang^c, Jihong Zhao^d, Feiyue Wang^e, Zeying Zhang^a, Zengchen Su^a, Han Zhang^a

a College of Environmental Engineering, Henan University of Technology, Zhengzhou, Henan, 450001, China
b Zhengzhou Key Laboratory of Organic Waste Resource Utilization, Zhengzhou, Henan, 450001, China
c College of Food Science and Engineering, Henan University of Technology, Zhengzhou, Henan, 450001, China
d Henan Open University, Zhengzhou, Henan, 450001, China
e College of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou, Henan, 450001, China

10.1016/j.partic.2024.11.017

Volume 97, February 2025, Pages 12-24

Received 25 September 2024, Revised 28 November 2024, Accepted 29 November 2024, Available online 7 December 2024, Version of Record 30 December 2024.

E-mail: liuyongde@haut.edu.cn

Highlights

• Optimal activated carbon has a high surface area of 2821.58 m²/g.

• Activated carbon displays outstanding adsorption capacity for TCH of 1414.64 mg/g.

• Activated carbon shows excellent reusability and stability in various conditions.

• Puffing pretreatment was efficient to enhance activated carbon's adsorption for TCH.

Abstract

In this study, a method for preparing activated carbon (AC) from wheat dust (WD) was developed to achieve efficient removal of tetracycline hydrochloride (TCH). The AC, prepared through response surface methodology with a carbonization temperature of 590 °C, a NaOH to WD ratio of 4:1, and an activation temperature of 800 °C, exhibited a high specific surface area of 2821.58 m²/g. It demonstrated a remarkable TCH removal capacity of 1414.65 mg/g in aqueous solution. The AC retained an adsorption capacity of 1035.36 mg/g after five cycles and maintained over 80% of its adsorption capacity in different water bodies. The adsorption of TCH by AC, primarily controlled by surface sites through chemical and physical interactions, involved mechanisms such as pore-filling, electrostatic interactions, hydrogen bonding, π-cation interactions, and π-π interactions. This study highlights the potential of WD in preparing effective adsorbents, providing valuable insights for the comprehensive utilization of similar byproducts.

Graphical abstract

Keywords

Adsorption; Wheat dust; Activated carbon; Response surface methodology; Tetracycline hydrochloride

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