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Synthesis of MgO micro-rods coated with charred dextrose and its application for the adsorption of selected heavy metals from synthetic and real groundwater.
Environ Sci Pollut Res Int. 2020 May; 27(15):17738-17753.ES

Abstract

MgO micro-rods supported on porous carbon were synthesized by an economical method and applied for the adsorption of three different heavy metals ions (As (III), Cd (II) and Pb (II)). Here, we used dextrose as the source of carbon during the synthesis. The synthesized material has been characterized by different techniques like XRD, TEM, FE-SEM, BET and FT-IR for the determination of various physical properties. Compared with MgO synthesized without dextrose, the carbon-supported MgO or C-MgO demonstrated consistent rod-shaped morphology, higher surface area and better absorptivity. The adsorption data were analysed using various isotherm models and the Freundlich isotherm model seemed to provide the best fit to the data. The adsorption kinetics data on the other hand was well explicated by the pseudo second-order kinetic model. The maximum adsorption capacity of C-MgO was 508.47 mg g-1 for As (III), 566.01 mg g-1 for Cd (II) and 476.19 mg g-1 for Pb (II), respectively after 6 h of reaction. To check the real-life usability and efficiency of C-MgO, it was added to a groundwater sample which had 169.55 ppb of As (III) and within 20 min it was adsorbed with 99% efficiency. Reusability studies reveal that C-MgO could be used up to 6 times with more than 60% efficiency. This study shows that C-MgO has high adsorptive ability, is an economic and non-toxic material with versatile applications and can be used for groundwater remediation in real life.

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Authors+Show Affiliations

Sikdar S
Department of Chemistry, National Institute of Technology Durgapur, 713209, Durgapur, WB, India. Department of Earth and Environmental Studies, National Institute of Technology Durgapur, Durgapur, WB, 713209, India.
Ghosh A
Department of Chemistry, National Institute of Technology Durgapur, 713209, Durgapur, WB, India.
Saha R
Department of Chemistry, National Institute of Technology Durgapur, 713209, Durgapur, WB, India. rnsahanitd@gmail.com.

MeSH

AdsorptionGlucoseGroundwaterKineticsMagnesium OxideMetals, HeavySpectroscopy, Fourier Transform InfraredWater Pollutants, Chemical

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32157541

Citation

Sikdar, Sayanta, et al. "Synthesis of MgO Micro-rods Coated With Charred Dextrose and Its Application for the Adsorption of Selected Heavy Metals From Synthetic and Real Groundwater." Environmental Science and Pollution Research International, vol. 27, no. 15, 2020, pp. 17738-17753.
Sikdar S, Ghosh A, Saha R. Synthesis of MgO micro-rods coated with charred dextrose and its application for the adsorption of selected heavy metals from synthetic and real groundwater. Environ Sci Pollut Res Int. 2020;27(15):17738-17753.
Sikdar, S., Ghosh, A., & Saha, R. (2020). Synthesis of MgO micro-rods coated with charred dextrose and its application for the adsorption of selected heavy metals from synthetic and real groundwater. Environmental Science and Pollution Research International, 27(15), 17738-17753. https://doi.org/10.1007/s11356-020-08106-7
Sikdar S, Ghosh A, Saha R. Synthesis of MgO Micro-rods Coated With Charred Dextrose and Its Application for the Adsorption of Selected Heavy Metals From Synthetic and Real Groundwater. Environ Sci Pollut Res Int. 2020;27(15):17738-17753. PubMed PMID: 32157541.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Synthesis of MgO micro-rods coated with charred dextrose and its application for the adsorption of selected heavy metals from synthetic and real groundwater. AU - Sikdar,Sayanta, AU - Ghosh,Ananya, AU - Saha,Rajnarayan, Y1 - 2020/03/10/ PY - 2019/11/01/received PY - 2020/02/14/accepted PY - 2020/3/12/pubmed PY - 2020/7/11/medline PY - 2020/3/12/entrez KW - Adsorptivity KW - Dextrose KW - Groundwater KW - Heavy metals KW - Magnesium oxide KW - Porous carbon SP - 17738 EP - 17753 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 27 IS - 15 N2 - MgO micro-rods supported on porous carbon were synthesized by an economical method and applied for the adsorption of three different heavy metals ions (As (III), Cd (II) and Pb (II)). Here, we used dextrose as the source of carbon during the synthesis. The synthesized material has been characterized by different techniques like XRD, TEM, FE-SEM, BET and FT-IR for the determination of various physical properties. Compared with MgO synthesized without dextrose, the carbon-supported MgO or C-MgO demonstrated consistent rod-shaped morphology, higher surface area and better absorptivity. The adsorption data were analysed using various isotherm models and the Freundlich isotherm model seemed to provide the best fit to the data. The adsorption kinetics data on the other hand was well explicated by the pseudo second-order kinetic model. The maximum adsorption capacity of C-MgO was 508.47 mg g-1 for As (III), 566.01 mg g-1 for Cd (II) and 476.19 mg g-1 for Pb (II), respectively after 6 h of reaction. To check the real-life usability and efficiency of C-MgO, it was added to a groundwater sample which had 169.55 ppb of As (III) and within 20 min it was adsorbed with 99% efficiency. Reusability studies reveal that C-MgO could be used up to 6 times with more than 60% efficiency. This study shows that C-MgO has high adsorptive ability, is an economic and non-toxic material with versatile applications and can be used for groundwater remediation in real life. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/32157541/Synthesis_of_MgO_micro_rods_coated_with_charred_dextrose_and_its_application_for_the_adsorption_of_selected_heavy_metals_from_synthetic_and_real_groundwater_ DB - PRIME DP - Unbound Medicine ER -