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A New Composite Adsorbent Produced by Chemical Activation of Elutrilithe with Zinc Chloride

โœ Scribed by Zhonghua Hu; E.F. Vansant


Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
211 KB
Volume
176
Category
Article
ISSN
0021-9797

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โœฆ Synopsis


The aim of the present paper is to study the transfer from We tried to utilize elutrilithe, coal waste, as a starting material coal waste to a useful adsorbent material. Because of its to produce a low-cost adsorbent as a substitute for activated carnatural properties, the elutrilithe exhibited a low adsorption bons. The elutrilithe was chemically activated with zinc chloride. capacity. Elutrilithe contains a considerable amount of car-The activated products were characterized by nitrogen adsorption bon materials, which may be activated, thus changing the isotherms, thermogravimetric analysis (TGA), and atomic absorpsubstrate to a porous structure. Chemical activation is one tion spectrometry (AAS). The BET and a s -plot method were used method to improve the adsorption properties of carbon mateto evaluate surface area and micropore volume of the samples. A rials. Metallic chlorides are effective activating agents for systematic investigation of the effect of ZnCl 2 /elutrilithe ratios, the development of carbonaceous materials (16, 17). Thereactivation temperatures, and activation time on the properties of the adsorbents was carried out. Since the carbon in the matrix was fore, in this investigation elutrilithe was impregnated with a activated, the elutrilithe became a highly microporous material so solution of ZnCl 2 . After drying, the mixture was pyrolyzed. that the adsorption behavior of the substrate was significantly In this way, an effective carbon-aluminosilicate composite improved. As a result, the new composite adsorbent exhibited high adsorbent could be produced. Characterization of these samaffinities toward organic compounds and an adsorption capacity ples was performed by using nitrogen adsorption isotherms, comparable to a commercial activated carbon. thermogravimetric analysis (TGA), and atomic absorption


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