Work

Simple synthesis of NiMn2O4/CuMn2O4/chitosan nanocomposites as a novel adsorbent for methyl orange removal from water and investigation of adsorption kinetics and isotherm models

Year: 2026

Type: article

Abstract: The main objective of this research is to develop an efficient nanocomposite adsorbent for the rapid removal of organic pollutants from aqueous media. For this purpose, NiMn 2 O 4 nanostructures (NMO) and NiMn 2 O 4 /CuMn 2 O 4 /chitosan nanocomposites (Ni/Cu/CS) were synthesized using Allium cepa (onion extract) and applied, for the first time, to remove methyl orange (MO) dye. The synthesized materials were characterized. Using response surface methodology (RSM), optimum adsorption conditions were pH = 3, adsorbent dose = 1.2 g/L, MO concentration = 10 mg/L, contact time = 5 min, and agitation speed = 300 rpm. Adsorption followed the Langmuir model (maximum capacity = 416.67 mg/g, KL = 0.01) and pseudo-second-order kinetics (R² = 0.9964). The outstanding and ultra-fast adsorption of Ni/Cu/CS highlights its strong potential for wastewater treatment applications.

Source: Applied Water Science

DOI: 10.1007/s13201-026-02842-w

Authors: Malihe Samadi Kazemi, Zeinab Izanloo, Azam Sobhani

Institutions: Islamic Azad University, Bojnourd Branch, Kosar University of Bojnord

Language: English

Topic: Adsorption and biosorption for pollutant removal

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production

Open Access status: gold

Estimated APC paid: $2,490