Using Natural Stone Pumice in Van Region on Adsorption of Some Textile Dyes

Abstract

Toxic effect of textile dyes their increasing quantities in air, soil and water environments, because of growing of industrial actives, they must be taken into consideration since they harm to environment. We come across textile dyes in natural wetlands as result of uncontrolled industrial wasted. Textile dyes that can accumulate easily in their environments may show toxic effects.

Pumice, accruing as result of volcanic events and durable against chemical factors, is a rock that has porous structure. Pumices have a porous structure because of sudden cooling of the rock and sudden leaving of gases a result of volcanic events. Thanks to these pores, pumices heat and sound insulation are quite high. The most distinctive feature of pumice from other rocks is that it has different colors and there is not crystal water in its porous structure.

Adsorption studies are applied with Van Pumice at pH = 6, the adsorption mechanism and changing metal concentration. As result of these researches, it has been found that there are different adsorption movements at pH 6 between textile dyes and Van Pumice. The result of this study shows that the Pumice found in Lake Van gives a better fit for the Langmuir Isotherm (model) and the amount of adsorption increases with the temperature.

It is thereby concluded that the Pumice located in Lake Van is a recommended adsorbent for filtering the used textile dye in aqueous medium.

Keywords

• Textile dyes,Adsorption,Isotherm,Van Pumice

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