Affiliations 

  • 1 College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
  • 2 Institute of Chemical Industry of Forest Products, CAF; National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass; Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing, 210042, China
  • 3 College of Landscape Architecture and Art, Henan Agricultural University, Zhengzhou, 450002, China
  • 4 Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia; Center for Transdisciplinary Research, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
  • 5 Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
  • 6 College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China. Electronic address: licheng@henau.edu.cn
  • 7 Department of Ecoscience, Aarhus University, Frederiksborgvej 399, DK-4000, Roskilde, Denmark. Electronic address: cs@ecos.au.dk
Chemosphere, 2023 May;323:138245.
PMID: 36841450 DOI: 10.1016/j.chemosphere.2023.138245

Abstract

Due to increasing antibiotic pollution in the water environment, green and efficient adsorbents are urgently needed to solve this problem. Here we prepare magnetic bamboo-based activated carbon (MDBAC) through delignification and carbonization using ZnCl2 as activator, resulting in production of an activated carbon with large specific surface area (1388.83 m2 g-1). The influencing factors, such as solution pH, initial sulfadiazine (SD) concentration, temperature, and contact time, were assessed in batch adsorption experiments. The Langmuir isotherm model demonstrated that MDBAC adsorption capacity on SD was 645.08 mg g-1 at its maximum, being higher than majority of previously reported adsorbents. In SD adsorption, the kinetic adsorption process closely followed the pseudo-second kinetic model, and the thermodynamic adsorption process was discovered to be exothermic and spontaneous in nature. The MDBAC exhibited excellent physicochemical stability, facile magnetic recovery and acceptable recyclability properties. Moreover, the synergistic interactions between MDBAC and SD mainly involved electrostatic forces, hydrogen bonding, π-π stacking, and chelation. Within the benefits of low cost, ease of production and excellent adsorption performance, the MDBAC biosorbent shows promising utilization in removing antibiotic contaminants from wastewater.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.