International Journal of Engineering، جلد ۲۷، شماره ۶، صفحات ۸۳۹-۸۵۴
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Adsorption of Malachite Green from Aqueous Solution using Activated Ntezi Clay: Optimization, Isotherm and Kinetic Studies
چکیده انگلیسی مقاله The adsorption of malachite green from aqueous solution using a local low cost adsorbent, acid activated Ntezi clay, was investigated. The low cost adsorbent was activated with different concentrations of sulphuric acid and the physicochemical properties of the adsorbent were determined and the structural properties were analyzed using XRF and XRD. The adsorption process was studied as a function of different process parameters such as temperature, adsorbent dosage, contact time, particle size and stirring speed. These process parameters were optimized using response surface methodology (RSM). The significance of the different process parameters and their combined effect on the adsorption efficiency has been established through a full factorial central composite design. The equilibrium modeling was analyzed using Langmuir, Freundlich, Dubini-Radushkevich and Temkin isotherm equation and the results of the experimental data follows the Langmuir adsorption isotherm. Adsorption kinetics follows the pseudo-second order with intra-particle diffusion as the rate-determining step. This investigation has shown that local clay mineral can be modified and used as a good adsorbent in the removal of impurities from contaminated water.
کلیدواژه‌های انگلیسی مقاله
نویسندگان مقاله Regina Ajemba |
Chemical Engineering, Nnamdi Azikiwe University, Awka, Nigeria

نشانی اینترنتی http://www.ije.ir/article_72317_089fb829a676bd55e856d3b59e3efd40.pdf
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/409/article-409-2062704.pdf
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات