Development of iron oxide/activated carbon nanoparticle composite for the removal of Cr(VI), Cu(II) and Cd(II) ions from aqueous solution

6533b823fe1ef96bd127e312

RESEARCH PRODUCT

Development of iron oxide/activated carbon nanoparticle composite for the removal of Cr(VI), Cu(II) and Cd(II) ions from aqueous solution

Monika Jain Mithilesh Yadav Vinod Kumar Garg Mika Sillanpää Manu Lahtinen Tomas Kohout

subject

Langmuir lcsh:Management. Industrial management XRD Activated carbon Geography Planning and Development 116 Chemical sciences Iron oxide 215 Chemical engineering 02 engineering and technology 010501 environmental sciences 01 natural sciences chemistry.chemical_compound symbols.namesake Adsorption INDUSTRIAL WASTE-WATER Desorption EFFICIENT ADSORBENTS medicine rautaoksidit Freundlich equation iron oxide nanoparticle ta116 0105 earth and related environmental sciences Water Science and Technology Aqueous solution MODIFIED MAGNETIC NANOPARTICLES pH CHROMIUM VI REMOVAL iron oxide nanoparticles Langmuir adsorption model 021001 nanoscience & nanotechnology NANO-PARTICLES chemistry lcsh:HD28-70 OXIDE COMPOSITE aktiivihiili COPPER IONS symbols TEM LEAD(II) REMOVAL nanohiukkaset HEXAVALENT CHROMIUM 0210 nano-technology Activated carbon medicine.drug Nuclear chemistry

description

Iron oxide (Fe3O4) and iron oxide/activated carbon (Fe3O4/AC) were fabricated by co-precipitation method for the removal of Cr(VI), Cu(II) and Cd(II) ions from aqueous solution in batch mode. These nanoparticles were characterized by BET, FTIR, XRD, SEM/TEM and VSM. The optimum conditions for the removal of ions were pH = 2 for Cr(VI) and 6 for Cu(II) and Cd(II), initial metal ion concentration = 50 mg L−1, nanoparticle dose = 50 mg/10 mL, temperature = 25 ± 1 °C, shaking speed = 180 rpm and contact time = 3 h. The equilibrium data of ions sorption were well described by Langmuir, Freundlich, Redlich-Peterson and Intraparticle Diffusion model. The R2 values obtained by Langmuir model were highest by Fe3O4/AC for Cr(VI) = 0.9994,Cu(II) = 0.9998 and Cd(II)= 0.9750. The temperature dependent study in the range of 288–328 K confirmed that the adsorption process was endothermic in nature. Desorption studies with 0.1 M HCl stated that these nanoparticles can be regenerated effectively and can be used after four adsorption-desorption cycles without any mass loss. Keywords: Activated carbon, pH, XRD, TEM, Iron oxide nanoparticles

year	journal	country	edition	language
2018-12-01

10.1016/j.wri.2018.10.001 http://hdl.handle.net/10138/267628