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The effective removal of heavy metals from water by activated carbon adsorbents of Albizia lebbeck and Melia azedarach seed shells

Author

Listed:
  • Mohib Ullah

    (Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, Harbin, P.R. China
    Department of Chemistry, Kohat University of Science and Technology, Kohat, Pakistan)

  • Ruqia Nazir

    (Department of Chemistry, Kohat University of Science and Technology, Kohat, Pakistan)

  • Muslim Khan

    (Department of Chemistry, Kohat University of Science and Technology, Kohat, Pakistan)

  • Waliullah Khan

    (Department of Chemistry, Abdul Wali Khan University Mardan, Mardan, Pakistan)

  • Mohib Shah

    (Department of Botany, Abdul Wali Khan University Mardan, Mardan, Pakistan)

  • Sahib Gul Afridi

    (Department of Biochemistry, Abdul Wali Khan University Mardan, Mardan, Pakistan)

  • Amir Zada

    (Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, Harbin, P.R. China
    Department of Chemistry, Abdul Wali Khan University Mardan, Mardan, Pakistan)

Abstract

The removal of toxic metals like lead (Pb) and cadmium (Cd) is very urgent keeping their hazardous effects in view. In this work, seeds of Albizia lebbeck and Melia azedarach trees were converted into activated carbon adsorbents and applied for the adsorptive removal of Pb and Cd metals from an aqueous solution. The as prepared adsorbents were characterised by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The removal efficiencies of both metals were strongly dependent on their initial concentration, contact time, pH, temperature and the quantity of adsorbents. 0.2 g of both adsorbents removed respectively 75 and 62% Pb and 77 and 66% Cd from from 100 ml of a 40 mg/l concentrated solution in 120 min at pH 5 and a temperature of 20°C. Both the Freundlich and Langmuir isotherms were well fitted to the experimental data. We believe that this work will provide a convenient way to synthesise low cost activated carbon adsorbents for the remediation of highly toxic metals from wastewater to safeguard our environment for future generations.

Suggested Citation

  • Mohib Ullah & Ruqia Nazir & Muslim Khan & Waliullah Khan & Mohib Shah & Sahib Gul Afridi & Amir Zada, 2020. "The effective removal of heavy metals from water by activated carbon adsorbents of Albizia lebbeck and Melia azedarach seed shells," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 15(1), pages 30-37.
    • Handle: RePEc:caa:jnlswr:v:15:y:2020:i:1:id:212-2018-swr
    DOI: 10.17221/212/2018-SWR
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    References listed on IDEAS

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    1. Maher E. SALEH & Ahmed A. EL-REFAEY & Amal H. MAHMOUD, 2016. "Effectiveness of sunflower seed husk biochar for removing copper ions from wastewater: a comparative study," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 11(1), pages 53-63.
    2. Michaela VYTOPILOVÁ & Václav TEJNECKÝ & Luboš BORŮVKA & Ondřej DRÁBEK, 2015. "Sorption of heavy metals in organic horizons of acid forest soils at low added concentrations," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 10(1), pages 1-9.
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    1. Ruqia Nazir & Muslim Khan & Riaz Ur Rehman & Shaukat Shujah & Mansoor Khan & Mohib Ullah & Amir Zada & Nasir Mahmood & Irshad Ahmad, 2020. "Adsorption of selected azo dyes from an aqueous solution by activated carbon derived from Monotheca buxifolia waste seeds," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 15(3), pages 166-172.

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