Effective Removal of Methylene Blue from Simulated Wastewater Using ZnO-Chitosan Nanocomposites: Optimization, Kinetics, and Isotherm Studies

Overview

Journal Molecules

Publisher MDPI

Specialty Biology

Date 2022 Jul 28

PMID 35897923

Authors

Zakariyya Uba Zango

John Ojur Dennis

A I Aljameel

Fahad Usman

Mohammed Khalil Mohammed Ali

Bashir Abubakar Abdulkadir

Saja Algessair

Osamah A Aldaghri

Khalid Hassan Ibnaouf

Affiliations

Soon will be listed here.

Abstract

Successful synthesis of ZnO-chitosan nanocomposites was conducted for the removal of methylene blue from an aqueous medium. Remarkable performance of the nanocomposites was demonstrated for the effective uptake of the dye, thereby achieving 83.77, 93.78 and 97.93 mg g for the chitosan, 5 wt.% ZnO-Chitosan and 10 wt.% ZnO-Chitosan, respectively. The corresponding adsorption efficiency was 88.77, 93.78 and 97.95 for the chitosan, 5 wt.% ZnO-Chitosan and 10 wt.% ZnO-Chitosan, respectively. Upon regeneration, good reusability of the nanocomposites was manifested for the continuous removal of the dye up to six consecutive cycles. The adsorption process was kinetically described by a pseudo-first order model, while the isotherms were best fitted by the Langmuir model.

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