Functionalization of chitosan biopolymer with SiO2 nanoparticles and benzaldehyde via hydrothermal process for acid red 88 dye adsorption: Box-Behnken design optimization

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

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 Soil Assessment and Remediation Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
  • 4 Department of Chemistry, Hengshui University, 053500, Hebei Province, Hengshui, China
  • 5 Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
  • 6 Chemistry Department, 110 Science Place - Room 165 Thorvaldson Building, University of Saskatchewan, Saskatoon, SK S7N 5C9, Canada
  • 7 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
Int J Biol Macromol, 2023 Aug 30;247:125806.
PMID: 37453635 DOI: 10.1016/j.ijbiomac.2023.125806

Abstract

An effective hydrothermally prepared chitosan-benzaldehyde/SiO2 adsorbent (CTA-BZA/SiO2) employed functionalization of a CTA biopolymer with SiO2 nanoparticles and BZA. CTA-BZA/SiO2 is an adsorbent that was utilized for the adsorption of an acidic dye (acid red 88, AR88) from synthetic wastewater. The fundamental adsorption variables (A: CTA-BZA/SiO2 dosage (0.02-0.1 g); B: pH (4-10); and C: duration (10-60)) were optimized via the Box-Behnken design (BBD). The Langmuir and Freundlich isotherms (coefficients of determination R2 = 0.99) agreed well with empirical data of AR88 adsorption by CTA-BZA/SiO2. The pseudo-first-order model showed reasonable agreement with the kinetic data of AR88 adsorption by CTA-BZA/SiO2. The maximal AR88 adsorption capacity (qmax) for CTA-BZA/SiO2 was identified to be 252.4 mg/g. The electrostatic attractions between both the positively charged CTA-BZA/SiO2 adsorbent and the AR88 anions, plus the n-π, π-π, and H-bond interactions contribute to the favourable adsorption process. This study reveals that CTA-BZA/SiO2 has the capacity to be a suitable adsorbent for the removal of a wider range of organic dyes from industrial effluents.

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

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