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New Findings from University of Mazandaran in Applied Surface Science Provides New Insights

February 7, 2014



By a News Reporter-Staff News Editor at Science Letter -- Investigators discuss new findings in Science. According to news reporting originating in Babol Sar, Iran, by NewsRx journalists, research stated, "Hierarchical zeolite consists of both microporous and unordered mesoporous structures. A composite of Polypyrrole/thiol-functionalized Beta/MCM-41 (PPy/SH-Beta/MCM-41) was prepared, characterized by FE-SEM, FT-IR, XRD, TGA and BET analysis and applied in the investigation of its adsorption characteristics for the removal of Hg2+ ions from aqueous solutions."

The news reporters obtained a quote from the research from the University of Mazandaran, "Thiol-functionalized Beta/MCM-41 ( SH-Beta/MCM41) was prepared by 3-mercaptopropyltrimethoxysilane (MPTMS) in the presence of aerosil-200 as a silica source by two-step hydrothermal crystallization procedure. Batch mode experiments were conducted and three kinetic models were used to describe the adsorption process. The experimental data fitted very well with the Pseudo-second-order kinetic model. The calculated thermodynamic parameters (AH, AS and AG) revealed that the adsorption of Hg2+ onto PPy/SH-Beta/MCM-41 is an endothermic and spontaneous process. It was found that temperature has a positive effect on the removal efficiency and that PPy/SH-Beta/MCM-41 is potentially able to remove Hg2+ ions from aqueous solutions at even high concentrations (400 mg L-1)."

According to the news reporters, the research concluded: "The recovery of Hg2' from the PPy/SH-Beta/MCM-41 adsorbent was found to be more than 90% using 0.5 M H-2 SO4, and the ability of the absorbent to be reused for removal of Hg2+ was investigated."

For more information on this research see: Application of novel Polypyrrole/thiol-functionalized zeolite Beta/MCM-41 type mesoporous silica nanocomposite for adsorption of Hg2+ from aqueous solution and industrial wastewater: Kinetic, isotherm and thermodynamic studies. Applied Surface Science, 2014;289():487-494. Applied Surface Science can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Applied Surface Science - www.elsevier.com/wps/product/cws_home/505669)

Our news correspondents report that additional information may be obtained by contacting H. Javadian, Univ Mazandaran, Dept. of Chem, Polymer Chem Res Lab, Babol Sar 4741695447, Iran (see also Science).

Keywords for this news article include: Iran, Asia, Science, Babol Sar

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Source: Science Letter


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