A Novel Insight into the Adsorption Interactions of Arsenate with a Fe–Si Binary Oxide


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Abstract

In the current investigation, a new insight into the adsorptive interaction of iron–silicon mixed oxide with arsenate was proposed through comparative studying the behavior of arsenate on the mixed oxide and on the parent oxides, i.e., iron hydroxide and silica. All the oxides were characterized by using different physiochemical methods. The arsenate concentration, pH, temperature, co-ion effect, and calcination of adsorbents were the key parameters of this investigation. The Langmuir model was used for the interpretation of the adsorption data. The thermodynamic parameters and spectroscopic evidences of the samples before and after arsenate adsorption confirmed that the mechanisms of arsenate adsorption by Fe(OH)3 and mixed oxide showed close similarity.

About the authors

Salah Ud Din

Department of Chemistry, University of Azad Jammu and Kashmir, Azad Kashmir

Author for correspondence.
Email: salah.mahsud@ajku.edu.pk
Pakistan, Muzaffarabad, 13100

Tahira Mahmood

National Center of Excellence in Physical Chemistry, University of Peshawar

Email: salah.mahsud@ajku.edu.pk
Pakistan, Peshawar, 25120

Abdul Naeem

National Center of Excellence in Physical Chemistry, University of Peshawar

Email: salah.mahsud@ajku.edu.pk
Pakistan, Peshawar, 25120

Noor S. Shah

Department of Environmental Sciences, Comsats Institute of Information Technology Vehari Campus

Email: salah.mahsud@ajku.edu.pk
Pakistan, Vehari, 61100

Sajjad Hussain

School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University

Email: salah.mahsud@ajku.edu.pk
China, Xinxiang, 453007

Muahmmad Imran

Department of Environmental Sciences, Comsats Institute of Information Technology Vehari Campus

Email: salah.mahsud@ajku.edu.pk
Pakistan, Vehari, 61100

Sabiha Sultana

Department of Chemistry, Islamia college University

Email: salah.mahsud@ajku.edu.pk
Pakistan, Peshawar

Atta Ur Rehman

Institute of Chemical Sciences, University of Peshawar

Email: salah.mahsud@ajku.edu.pk
Pakistan, Peshawar

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