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نوع الوثيقة : مقال في مجلة دورية 
عنوان الوثيقة :
إدمصاص الزئبق الثنائى من محلول مائى بإستخدام بودرة أوراق نبات الأدولسا: دراسات أتزانية وحركية
Adsorption of Hg(II) from Aqueous Solution Using Adulsa (Justicia adhatoda) Leaves Powder: Kinetic and Equilibrium Studies
 
الموضوع : علوم البيئة 
لغة الوثيقة : الانجليزية 
المستخلص : 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. 
ردمد : 2090-9063 
اسم الدورية : Hindawi Publishing Corporation Journal of Chemistry 
المجلد : 2013 
العدد : 11 
سنة النشر : 1434 هـ
2013 م 
نوع المقالة : مقالة علمية 
تاريخ الاضافة على الموقع : Monday, September 9, 2013 

الباحثون

اسم الباحث (عربي)اسم الباحث (انجليزي)نوع الباحثالمرتبة العلميةالبريد الالكتروني
محمد اسلمAslam, Mohd باحث aslam312@gmail.com
Sumbul RaisRais, Sumbul باحث  
Masood ALAMAlam, Masood باحث  
Arulazhagan PugazhendiPugazhendi, Arulazhagan باحث  

الملفات

اسم الملفالنوعالوصف
 35966.pdf pdfAdsorption of Hg(II) from Aqueous Solution Using Adulsa (Justicia adhatoda) Leaves Powder: Kinetic and Equilibrium Studies

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