Sustainable durio zibethinus-derived biosorbents for congo red removal from aqueous solution: Statistical optimization, isotherms and mechanism studies

A. A. Oyekanmi, Akil Ahmad, Siti Hamidah Mohd Setapar, Mohammed B. Alshammari, Mohammad Jawaid, Marlia Mohd Hanafiah, H. P.S. Abdul Khalil, Ashok Vaseashta

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

This investigation reports on the biosorption mechanism of Congo Red dyes (CR) in aqueous solution using acid-treated durian peels, prepared for this study. The biosorbent nature was char-acterized using the Scanning Electron Microscopy (SEM), Fourier Transform infrared spectroscopy (FT-IR) and Brunaure-Emmet-Teller (BET). The effect of process parameters within operational range of pH (2–9), contact time (10–200 min), initial concentration (25–400 mg g−1) and temperature (25–65C) for the optimum removal of CR dyes was investigated using central composite design (CCD) under response surface methodology (RSM), and revealed that the optimum condition of biosorption was achieved around a pH of 5.5, contact time of 105 min at initial concentration of 212.5 mg L−1 within 45C temperature, which corresponds to 95.2% percent removal of CR. The experimental data fitted better to the second order polynomial model, with a correlation coefficient R2 value of 0.9917 and the Langmuir isotherm model with biosorption capacity of 107.52 mg g−1. Gibbs free energy indicated that the adsorption of CR dyes was spontaneous. The mechanism of the adsorption of CR dyes revealed that the biosorption of CR dyes investigated under different operational conditions show that under acidic pH, the adsorption efficiency of the acid treated durian peels is enhanced for the adsorption of CR dye molecules.

Original languageEnglish
Article number13264
JournalSustainability (Switzerland)
Volume13
Issue number23
DOIs
Publication statusPublished - Dec 1 2021
Externally publishedYes

Keywords

  • Biosorption
  • Central composite design
  • Congo Red
  • Durian peels
  • Environmental sustain-ability mechanism

ASJC Scopus subject areas

  • Computer Science (miscellaneous)
  • Geography, Planning and Development
  • Renewable Energy, Sustainability and the Environment
  • Environmental Science (miscellaneous)
  • Energy Engineering and Power Technology
  • Hardware and Architecture
  • Computer Networks and Communications
  • Management, Monitoring, Policy and Law

Fingerprint

Dive into the research topics of 'Sustainable durio zibethinus-derived biosorbents for congo red removal from aqueous solution: Statistical optimization, isotherms and mechanism studies'. Together they form a unique fingerprint.

Cite this