Document Details

Document Type : Article In Journal 
Document Title :
Adsorption of Hg(II) from Aqueous Solution Using Adulsa (Justicia adhatoda) Leaves Powder: Kinetic and Equilibrium Studies
إدمصاص الزئبق الثنائى من محلول مائى بإستخدام بودرة أوراق نبات الأدولسا: دراسات أتزانية وحركية
 
Subject : Enviromental sciences 
Document Language : English 
Abstract : The ability of Adulsa leaves powder (ALP) to adsorb Hg(II) from aqueous solutions has been investigated through batch experiments. The ALP biomass was characterized by Fourier transform infrared spectroscopy and scanning electron microscopy. The experimental parameters that were investigated in this study included pH, adsorbent dosage, and effect of contact time along with initial metal ion concentration.Theadsorption processwas relatively fast, and equilibriumwas achieved after 40 min of contact time.Themaximumremoval ofHg(II), 97.5%was observed atpH6.Theadsorption datawere correlated with Langmuir, Freundlich, and Temkin isotherms. Isotherms results were amply fitted by the Langmuir model determining a monolayermaximum adsorption capacity (q𝑚) of ALP biomass equal to 107.5mg g−1 and suggesting a functional group-limited sorption process. The kinetic process of Hg(II) adsorption onto ALP biomass was tested by applying pseudofirst-order, pseudosecond-order, Elovich, and intraparticlediffusion models to correlate the experimental data and to determine the kinetic parameters. It was found that the pseudosecond order kinetic model for Hg(II) adsorption fitted very well. The rate determining step is described by intraparticle diffusion model. These studies considered the possibility of using Adulsa plant leaves biomass as an inexpensive, efficient, and environmentally safe adsorbent for the treatment of Hg(II) contaminated wastewaters. 
ISSN : 2090-9063 
Journal Name : Hindawi Publishing Corporation Journal of Chemistry 
Volume : 2013 
Issue Number : 11 
Publishing Year : 1434 AH
2013 AD 
Article Type : Article 
Added Date : Monday, September 9, 2013 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
محمد اسلمAslam, Mohd Researcher aslam312@gmail.com
Sumbul RaisRais, Sumbul Researcher  
Masood ALAMAlam, Masood Researcher  
Arulazhagan PugazhendiPugazhendi, Arulazhagan Researcher  

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