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حذف رنگهای Reactive Red 120 و Direct Red 81 از محلول های آبی توسط پامیس

محوی, امیرحسین ، هیبتی, بهزاد (1390) حذف رنگهای Reactive Red 120 و Direct Red 81 از محلول های آبی توسط پامیس. Research Journal of Chemistry and Environment ــ 16 (1). ص.ص.62-68. شاپا 0972-0626

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عنوان انگليسي

Removal of Reactive Red 120 and Direct Red 81 dyes from aqueous solutions by Pumice

خلاصه انگلیسی

Dyes are the main pollutants existing in wastewater of textile industries. Dyes are produced naturally or artificially and can cause fabrics to take different colors. The main objective of this work was to investigate adsorption of Reactive Red 120 (RR 120) and Direct Red 81 (DR 81) dyes by pumice. This fundamental-practical study was conducted in labscale batch system. Chemical structure and composition of Pumice was determined by X-Ray Fluorescence (XRF), Scanning Electron Microscopy (SEM) and electronic microscope. The effects of contact time and initial solution pH on adsorption process were also evaluated. The Freundlich and Langmuir isotherms were used to describe adsorption equilibrium. The results of adsorption isotherm experiments show that the removal of RR120 and DR81 dyes follow Langmuir (R2>0.964) and Freundlich (R2>0.932) isotherm models. It was found that the affinity coefficients, Kf, for DR81 and RR120 dyes were 10.56 and 2.32 respectively, indicating higher adhesion of pumice to DR81 than RR120. In general, the results of the study showed that pumice can be used as a cheap and effective adsorbent for removal of dye from textile industrial effluents.

نوع سند :مقاله
زبان سند : انگلیسی
نویسنده اول :امیرحسین محوی
نویسنده مسئول :بهزاد هیبتی
اطلاعات اضافی :impact factor of 0.636 indexed abstracted in : Science Citation Index Expanded SCOPUS, Chemical Abstracts and , Journal Citation Reports
کلید واژه ها (انگلیسی):Adsorption , Pumice , isotherm , Direct Red 81 , Reactive Red 120
موضوعات :WA بهداشت عمومي > WA 30 بهداشت محيط
WA بهداشت عمومي > WA 30 بهداشت محيط

WA بهداشت عمومي
WA بهداشت عمومي
بخش های دانشگاهی :دانشکده بهداشت > گروه بهداشت محیط
کد شناسایی :4167
ارائه شده توسط : آقای بهزاد هیبتی
ارائه شده در تاریخ :18 شهریور 1392 08:21
آخرین تغییر :18 شهریور 1392 08:21

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