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EXPERIMENTAL STUDIES ON CONGO RED ADSORPTION BY TEA WASTE IN THE PRESENCE OF SILICA AND Fe۲O۳ NANOPARTICLES

محل انتشار: مجله علوم و فن آوری نفت، دوره: 3، شماره: 2
سال انتشار: 1392
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 60

فایل این مقاله در 10 صفحه با فرمت PDF قابل دریافت می باشد

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این مقاله:
https://civilica.com/doc/1858673

شناسه ملی سند علمی:

JR_JPSTR-3-2_004

تاریخ نمایه سازی: 29 آذر 1402

چکیده مقاله:

In this work, the adsorption of the anionic dye, Congo red (CR), from aqueous solution by using tea waste (TW) has been carried out at ۳۰ °C. The equilibrium sorption isotherms and kinetics were investigated. The equilibrium adsorption was studied by the Langmuir and Freundlich models of adsorption. The experimental results manifested that the Langmuir isotherm was the best model for the adsorption of CR by TW and implied the monolayer adsorption of CR on TW with the adsorption capacity of ۴۰.۶ mg/g at ۳۰ °C. The kinetic data resulted from batch experiments were analyzed using pseudo-first-order and pseudo-second-order models. It was found that pseudo-second-order model provided the best fit for the experimental data (R۲>۰.۹۹). The results illustrated that both silica and Fe۲O۳ nanoparticles increased the adsorption of CR on TW by about ۵% and ۱۰% at ۳۰ °C, respectively. The results suggested that TW should be a potential low-cost adsorbent for the removal of CR from aqueous solution.

کلیدواژه ها:

Tea Waste ، Congo Red ، Adsorption ، Silica Nanoparticles ، Fe۲O۳ Nanoparticles

نویسندگان

Alireza Shojamoradi

college of engineering university of Tehran

Hosein Abolghasemi

college of engineering university of Tehran

Mohammad Esmaili

college of engineering university of Tehran

Mohammad Foroughi-dahr

college of engineering university of Tehran

Hooman Fatoorechi

college of engineering university of Tehran

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