Biosynthesis and Analytical Characterization of Iron Oxide Nanobiocomposite for In-Depth Adsorption Strategy for the Removal of Toxic Metals from Drinking Water

Ashfaque Ali Bhutto, Jameel Ahmed Baig, Sirajuddin, Tasneem Gul Kazi, Reyes Sierra-Alvarez, Khalil Akhtar, Sajjad Hussain, Hassan Imran Afridi, Aysen Hol, Suraya Samejo

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The biosynthesis of the iron oxide nanoparticles was done using Ixoro coccinea leaf extract, followed by the fabrication of iron oxide nanobiocomposites (I-Fe3O4-NBC) using chitosan biopolymer. Furthermore, the synthesized I-Fe3O4-NPs and I-Fe3O4-NBC were characterized, and I-Fe3O4-NBC was applied to remove toxic metals (TMs: Cd, Ni, and Pb) from water. The characterization study confirmed that the nanostructure, porous, rough, crystalline structure, and different functional groups of chitosan and I-Fe3O4-NPs in I-Fe3O4-NBCs showed their feasibility for the application as excellent adsorbents for quantitative removal of TMs. The batch mode strategy as feasibility testing was done to optimize different adsorption parameters (pH, concentrations of TMs, dose of I-Fe3O4-NBC, contact time, and temperature) for maximum removal of TMs from water by Fe3O4-NBC. The maximum adsorption capacities using nanocomposites for Cd, Ni, and Pb were 66.0, 60.0, and 66.4 mg g−1, respectively. The adsorption process follows the Freundlich isotherm model by I-Fe3O4-NBC to remove Cd and Ni, while the Pb may be adsorption followed by multilayer surface coverage. The proposed adsorption process was best fitted to follow pseudo-second-order kinetics and showed an exothermic, favorable, and spontaneous nature. In addition, the I-Fe3O4-NBC was applied to adsorption TMs from surface water (%recovery > 95%). Thus, it can be concluded that the proposed nanocomposite is most efficient in removing TMs from drinking water up to recommended permissible limit.

Original languageEnglish (US)
Pages (from-to)7411-7424
Number of pages14
JournalArabian Journal for Science and Engineering
Volume48
Issue number6
DOIs
StatePublished - Jun 2023

Keywords

  • Adsorption
  • I-FeO-NBC
  • I-FeO-NPs
  • Kinetics
  • Surface water
  • Thermodynamics
  • Toxic metals

ASJC Scopus subject areas

  • General

Fingerprint

Dive into the research topics of 'Biosynthesis and Analytical Characterization of Iron Oxide Nanobiocomposite for In-Depth Adsorption Strategy for the Removal of Toxic Metals from Drinking Water'. Together they form a unique fingerprint.

Cite this