Evaluation of magnetic material IIP@GO-Fe3O4 based on Kesambi wood (Schleichera oleosa) as a potential adsorbent for the removal of Cr(VI) from aqueous solutions

• Published in: Reactive & functional polymers Vol. 166; p. 105000
• Main Authors: Neolaka, Yantus A.B., Lawa, Yosep, Naat, Johnson, Riwu, Arsel A.P., Lindu, Yeskiel E., Darmokoesoemo, Handoko, Widyaningrum, Bernadeta Ayu, Iqbal, Munawar, Kusuma, Heri Septya
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.09.2021; Elsevier BV
• Subjects: Adsorbents; Adsorption; Adsorptivity; Aqueous solutions; Chemical precipitation; Composite materials; Graphene-oxide magnetic (GO-Fe3O4); Hexavalent chromium; Imprinting polymer; Iron oxides; Magnetic materials; Polymer matrix composites; Polymers; Selectivity; Studies; Wastewater; Water sampling; Hexavalent chromium; Imprinting polymer; Adsorption; Wastewater; Graphene-oxide magnetic (GO-Fe3O4)
• ISSN: 1381-5148; 1873-166X
• DOI: 10.1016/j.reactfunctpolym.2021.105000

Magnetic composite material modified ion imprinting polymer (IIP@GO-Fe3O4) based on GO from kesambi wood (Schleichera oleosa)was successfully synthesized by using a precipitation method. The physico-chemical characterization uses XRD, FTIR, BET-BJH and SEM-EDX. IIP@GO-Fe3O4 was applied to adsorb Cr(VI) from the water sample by utilizing the batch system. Various adsorption parameters for Cr(VI) such as adsorbent mass, pH, contact time and temperature were optimized in this investigation. The Cr(VI) maximum adsorption occurred when the adsorbent mass usage 0.04 g, pH 2, 40 min of contacts and at the temperature of 323 K. In this study ten kinetic and eight isothermal adsorption models were used to investigate the adsorption mechanism of Cr(VI) onto IIP@GO-Fe3O4. The kinetic modelling shows that the adsorption of Cr(VI) onto IIP@GO-Fe3O4 corresponds to the pseudo-second-order (PSO) model, while the adsorption isotherm corresponds to the Dubinin-Radushkevich (DKR) model with an adsorption capacity of 8.502 mg/g. The thermodynamic study has shown that the adsorption process can take place at a temperature of 323 K. The result showed that a higher adsorption selectivity on IIP@GO-Fe3O4 compares to NIP@GO-Fe3O4. The adsorbent materials gave better reusability because their adsorptive capacity remained at the same level (although it was used at least ten times). [Display omitted] •IIP@GO-Fe3O4 based on kesambi wood (Schleichera oleosa) was successfully synthesized;•The magnetic composite material showed good adsorption ability of Cr(VI);•The kinetic and isotherm modellings are based on the pseudo-second-order (PSO) and Dubinin-Radushkevich (DKR) models;•The IIP@GO-Fe3O4 material has a high adsorption selectivity toward Cr(VI);•The material IIP@GO-Fe3O4 has shown a sufficient reusability factor for the adsorption of Cr(VI)