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Gold nanoparticle is the active catalyst for CO oxidation at low temperature. This feature of gold base catalysts is suitable to overcome the problem of cold-start problem of automobile exhaust TWC converters. In this study gold nanoparticle were deposited on modified NH4-Y type zeolite. The activity of synthesized catalyst was measured in a fixed-...
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Abstract
Background and Objectives: Existence arsenic in underground water puts drinking water consumers’ health at
risk. Due to lack of drinking water sources in Iran, maximizing the allowable amount of arsenic is essential. The
aim of this study was investigate the modified zeolite clinoptilolite with MgO arsenic for removal the arsenic from wate...
Zeolite and vermicompost applications to soil may improve K fertility of soils. For this purpose, these materials were added to five representative calcareous soils collected from southern Iran. The treatments included (1) control, (2) 20 g/kg zeolite, (3) 20 g/kg vermicompost, and (4) 20 g/kg vermicompost + zeolite (1:1). The samples were incubate...
In order to study the effects of cattle manure and zeolite applications on physiological and biochemical changes in soybean grown under conditions of water stress, an experiment was conducted at Varamin, Iran during 2011 growing season.
This paper concerned the removal of Zn 2+ and Cr 6+ ions from waste water using a naturally occurring zeolite from semnan region in Iran. A continuous fixed-column study was carried out by using zeolite as a low-cost adsorbent for the removal of Zn 2+ and Cr 6+ ions from aqueous solution under the effect of various process parameters such as, grain...
Surfactant-modified clinoptilolite-rich tuff was used for the removal of methyl tert-butyl ether (MTBE) from aqueous solutions. Clinoptilolite zeolite from Miyaneh region of Iran was treated with sodium chloride and then modified with hexadecyltrimethylammonium chloride (HDTMA-Cl) and n-Cetylpyridinium bromide (CPB) to be used in different experime...
