Development of ion imprinted based magnetic nanoparticles for selective removal of arsenic (III) and arsenic (V) from wastewater

• Published in: Separation science and technology Vol. 57; no. 6; pp. 990 - 999
• Main Authors: Türkmen, Deniz, Özkaya Türkmen, Melike, Akgönüllü, Semra, Denizli, Adil
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis 13.04.2022; Taylor & Francis Ltd
• Subjects: Adsorption; Analogs; Anions; Arsenic; Arsenic ions; Arsenic removal; Buffer solutions; Imprinted polymers; ion-imprinted polymer; magnetic nanoparticles; Nanoparticles; nanotechnology; Pollutant removal; Polymers; Removal; Wastewater; Wastewater treatment
• ISSN: 0149-6395; 1520-5754
• DOI: 10.1080/01496395.2021.1956972

In this study, we fabricated magnetic ion-imprinted polymers (IIP) for arsenic removal. Ion-imprinted method was developed by complexing N-methacryloyl-l-cysteine (MAC) monomer and As(III) and As(V) as template molecules. The utilization of the MAC-As complex was chosen to provide a rebinding of As(III) and As(V) on IIP. The template molecules were removed by using 0.01 M HNO 3 containing 0.05% thiourea solution as a desorption agent. The adsorption of As(III) and As(V) was ideal in buffer solution pH 5.0 for 120 min with removal capacity. The ion-imprinted-based magnetic nanoparticles were selective for arsenic toward other analogs (NO 3 − , PO 4 3- , SO 4 2- as an anion, and AsO 2 − , HAsO 4 − as an oxi-anion). The adsorption isotherm model fitted the Langmuir model with an R 2 value of 0.9935-0.9118 and the Q max values of 91.7 mg/g for As(III)-IIP magnetic nanoparticles and 99.0 mg/g As(V)-IIP nanoparticles, respectively. Finally, IIP-based magnetic nanoparticle adsorbents have been utilized successfully for effective arsenic removal from wastewater samples.