Development of a chitosan/nanosilica biocomposite with arene functionalization via hydrothermal synthesis for acid red 88 dye removal

Wu R 1 , Abdulhameed AS 2 , Jawad AH 3 , Yong SK 4 , Li H 5 , ALOthman ZA 6 Show all authors , Wilson LD 7 , Algburi S 8

Affiliations 

  • 1 Department of Chemistry, Hengshui University, 053500, Hebei Province, Hengshui, China; Advanced Biomaterials and Carbon Development Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
  • 2 Department of Pharmaceutical Chemistry, College of Pharmacy, University of Anbar, Ramadi, Iraq
  • 3 Advanced Biomaterials and Carbon Development Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia. Electronic address: ali288@uitm.edu.my
  • 4 Soil Assessment and Remediation Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
  • 5 Department of Chemistry, Hengshui University, 053500, Hebei Province, Hengshui, China
  • 6 Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
  • 7 Department of Chemistry, University of Saskatchewan, Saskatoon, SK S7N5C9, Canada
  • 8 College of Engineering Technology, Al-Kitab University, Kirkuk, Iraq
Int J Biol Macromol, 2023 Dec 01;252:126342.
PMID: 37591432 DOI: 10.1016/j.ijbiomac.2023.126342

Abstract

Herein, the polymer nanomatrix of chitosan/SiO2 (CHI/n-SiO2) was enriched with a π-π electron donor-acceptor system using diaromatic rings of benzil (BEZ) assisted via a hydrothermal process to obtain an effective adsorbent of chitosan-benzil/SiO2 (CHI-BEZ/n-SiO2). The polymer nanomatrix (CHI/n-SiO2) and the resulting adsorbent (CHI-BEZ/n-SiO2) were applied to remove the anionic acid red 88 (AR88) dye from aqueous media in a comparative mode. Box-Behnken design (BBD) was adopted to optimize AR88 adsorption onto CHI/n-SiO2 and CHI-BEZ/n-SiO2 with respect to variables that influence AR88 adsorption (adsorbent dose: 0.02-0.1 g/100 mL; pH: 4-10; and time: 10-90). The adsorption studies at equilibrium were conducted with a variety of initial AR88 dye concentrations (20-200 mg/L). The adsorption isotherm results reveal that the AR88 adsorption by CHI/n-SiO2 and CHI-BEZ/n-SiO2 are described by the Langmuir model. The kinetic adsorption profiles of AR88 with CHI/n-SiO2 and CHI-BEZ/n-SiO2 reveal that the pseudo-first-order model provides the best fit results. Interestingly, CHI-BEZ/n-SiO2 has a high adsorption capacity (261.2 mg/g), which exceeds the adsorption capacity of CHI/n-SiO2 (215.1 mg/g) that relates to the surface effects of SiO2 and the functionalization of chitosan with BEZ. These findings show that CHI-BEZ/n-SiO2 represents a highly efficient adsorbent for the removal of harmful pollutants from water, which outperforming the CHI/n-SiO2 system.

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

MeSH terms
Similar publications