A series of novel carbohydrate-based carbon adsorbents were synthesized by self-propagating combustion for tetracycline removal

• Published in: Bioresource technology Vol. 332; p. 125059
• Main Authors: Wang, Wei, Gao, Ming, Cao, Mengbo, Liu, Xun, Yang, Hongbing, Li, Yongsheng
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01.07.2021
• Subjects: adsorbents; Adsorption; Carbohydrate-based carbon adsorbents; Carbohydrates; Carbon; combustion; glucose; hospitals; humic acids; Hydrogen-Ion Concentration; Kinetics; maltose; Self-propagating combustion; sorption isotherms; starch; technology; Tetracycline; wastewater; Water Pollutants, Chemical - analysis; zinc oxide; Self-propagating combustion; Carbohydrate-based carbon adsorbents; Adsorption; Tetracycline
• DOI: 10.1016/j.biortech.2021.125059
• ISSN: 0960-8524; 1873-2976

[Display omitted] •A series of novel adsorbents was prepared from glucose, maltose, and starch.•The self-propagating combustion (SCS) is facile and time-saving (30 min).•SCS has universality for the preparation of soluble carbohydrate carbon materials.•The adsorbents prepared by SCS have excellent adsorption capacity (>375 mg/g).•SCS can provide inspiration for the preparation of carbon-based materials. Herein, a series of novel adsorbents derived from glucose, maltose, and starch zinc oxide (ZnO) loaded carbohydrate-based carbon materials (Zn-Cs) were synthesized by a fast and efficient self-propagating combustion synthesis method (SCS). The experimental results show that Zn-Cs exhibits excellent adsorption performance (>375 mg/g) to tetracycline, and the pseudo-second-order model and Freundlich model can better describe the adsorption data. The adsorption capacities of Zn-Cs were over 300 mg/g throughout the wide pH range (6–9), while various coexisting ions in the concentration range of 0–10 mg/L and the presence of humic acid had nearly no impact on the adsorption of tetracycline. Moreover, the adsorption experiment of simulated hospital wastewater shows that the adsorption capacity of Zn-Cs for tetracycline exceeds 185 mg/g. The adsorption mechanism of tetracycline are H-bond, complexation, and conjugation effect. This work provides an efficient, excellent versatility and time-saving strategy for preparing high-performance carbohydrate-based carbon materials for adsorbents.