Removal of Chromium from Aqueous Solution by Thermally Treated Mgal Layered Double Hydroxide

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Submitted: December 21, 2016
Published: Jan 11, 2017
DOI: 10.29328/journal.acee.1001001
Keywords:
Layered double hydroxide, Thermal treatment, Adsorption, Chromium

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Enkhtur Otgonjargal
Laboratory of Inorganic Chemistry, Institute of Chemistry and Chemical Technology of Mongolian Academy of Science, Peace Avenue, Ulaanbaatar 13330, Mongolia
Byambasuren Nyamsuren
Laboratory of Inorganic Chemistry, Institute of Chemistry and Chemical Technology of Mongolian Academy of Science, Peace Avenue, Ulaanbaatar 13330, Mongolia
Enkhtuul Surenjav
Laboratory of Inorganic Chemistry, Institute of Chemistry and Chemical Technology of Mongolian Academy of Science, Peace Avenue, Ulaanbaatar 13330, Mongolia
Gunchin Burmaa
Laboratory of Inorganic Chemistry, Institute of Chemistry and Chemical Technology of Mongolian Academy of Science, Peace Avenue, Ulaanbaatar 13330, Mongolia
Jadambaa Temuujin
Laboratory of Materials Science and Technology, Institute of Chemistry and Chemical Technology of Mongolian Academy of Science, Peace Avenue, Ulaanbaatar 13330, Mongolia
Dashkhuu Khasbaatar
Laboratory of Inorganic Chemistry, Institute of Chemistry and Chemical Technology of Mongolian Academy of Science, Peace Avenue, Ulaanbaatar 13330, Mongolia

Abstract

MgAl based layered double hydroxide (MgAl-LDH) was used as adsorbent for the removal of chromium oxyanion from an aqueous solution. MgAl-LDH was synthesized successfully using co-precipitation method, and was characterized by X-Ray Diffractometer (XRD), Scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX). MgAl-LDH was thermally treated for improving the chromium adsorption. Samples were treated at 220°C and 450°C. A negligible difference of total chromium adsorption capacities was observed between MgAl-LDH000 and MgAl-LDH220 as 12.56 mg/g and 11.01 mg/g. The maximum chromium adsorption capacity of MgAl-LDH was 88.07 mg/g at 500g/l chromium concentration for MgAl-LDH which has been thermally treated at 450°C (MgAl-LDH450). The results indicated that memory effects of thermally treated MgAl-LDH at certain temperatures were retained and enhanced chromium removal efficiency.

Article Details

Otgonjargal, E., Nyamsuren, B., Surenjav, E., Burmaa, G., Temuujin, J., & Khasbaatar, D. (2017). Removal of Chromium from Aqueous Solution by Thermally Treated Mgal Layered Double Hydroxide. Annals of Civil and Environmental Engineering, 1(1), 001–008. https://doi.org/10.29328/journal.acee.1001001
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Copyright (c) 2017 Otgonjargal E, et al.

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