A prudent approach for the removal of copper (II) and cadmium (II) ions from aqueous solutions using indigenous Mactra aequisulcata shells Scientific paper

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Published: Aug 1, 2021
DOI: https://doi.org/10.2298/JSC201228028U
Keywords:
adsorbent heavy metals pollutants remediation wastewater

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Syed Muhammad Rehan Ullah
Department of Chemical Oceanography & Marine Environment, National Institute of Oceanography, St-47, Block-1 Clifton, Karachi−75600, Sindh−74200, Pakistan and Department of Chemistry, University of Karachi, Karachi−75270, Sindh−74200, Pakistan
http://orcid.org/0000-0002-4543-1942
Erum Zahir
Department of Chemistry, University of Karachi, Karachi−75270, Sindh−74200, Pakistan
https://orcid.org/0000-0002-9063-2153
Muhammad Asif Asghar
Food and Feed Safety Laboratory, Food and Marine Resources Research Centre, PCSIR Laboratories Complex, Shahrah-e-Salimuzzaman Siddiqui, Off University Road, Karachi−75280, Sindh−74200, Pakistan
https://orcid.org/0000-0003-0260-0109

Abstract

In this study, the raw seashells of Mactra aequisulcata, of class Bivalvia and phylum Mollusca were employed as an adsorbent to remove copper (II) and cadmium (II) metal ions from aqueous solution. The characterization of shells was performed using FTIR, EDX and SEM, BET isotherm and point of zero charge (pHpzc). Batch experiments were performed to assess various factors on the biosorption efficiency. Maximum adsorption of both metals ions conveniently found at 0.4 g L-1 adsorbent dose, pH 5 and at 303 K. Maximum biosorption capacities for Cu2+ and Cd2+ were 59.57 and 38.12 mg g-1, respectively. The Langmuir isotherm model was found to be the best fit for the acquired equilibrium data. Thermodynamic and kinetic parameters presented that the process was feasible, exothermic and followed pseudo-first order.

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How to Cite
[1]
S. M. Rehan Ullah, E. Zahir, and M. A. Asghar, “A prudent approach for the removal of copper (II) and cadmium (II) ions from aqueous solutions using indigenous Mactra aequisulcata shells: Scientific paper”, J. Serb. Chem. Soc., vol. 86, no. 7-8, pp. 767–780, Aug. 2021.
Issue
Vol. 86 No. 7-8 (2021)
Section
Environmental Chemistry
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Author Biography

Erum Zahir, Department of Chemistry, University of Karachi, Karachi−75270, Sindh−74200, Pakistan

Dr. Erum Zahir is a Professor at the Department of Chemistry, University of Karachi. Her research work focuses on Physicochemical properties of oil extracts and their Kinetics and Thermodynamics study, Neurochemistry, Electro-Instrumental techniques; Analytical Chemistry; Environmental pollution monitoring and assessment; Metals in environment and Biology; Multimedia application in Chemistry Teaching; Environmental Hydrochemistry; Persistent Organic Pollutants (POPs). She is a member of Chemical Society of Pakistan, Systemic Approach to Teaching and Learning Chemistry Club (PS-SATLC) & Chemistry Alumni Welfare Association-Karachi University (CAWA-KU).

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