Application of response surface methodology for thorium(IV) removal using Amberlite IR-120 and IRA-400 : Ion exchange equilibrium and kinetics
- سال انتشار: 1396
- محل انتشار: نشریه علوم و فناوری ذرات، دوره: 3، شماره: 2
- کد COI اختصاصی: JR_JPST-3-2_005
- زبان مقاله: انگلیسی
- تعداد مشاهده: 497
نویسندگان
Department of Chemical Engineering, Collage of Engineering, University of Tehran, Tehran, Iran
Nuclear Fuel Cycle School, Nuclear Science and Technology Research Institute, Tehran, Iran
Department of Chemical Engineering, Collage of Engineering, University of Tehran, Tehran, Iran
چکیده
In this work, thorium(IV) removal from aqueous solutions was investigated in batch systems of cationic and anionic resins of Amberlite IR-120 and IRA-400. In this way, the effects of pH, initial Th(IV) concentration and the amount of adsorbent were investigated. A Central composite design (CCD) under response surface methodology (RSM) was employed to determine the optimized condition. The results showed that the maximum removal efficiency of Th(IV) onto IR-120 and IRA-400 either discretely or in combination, albeit with equal mass fraction, was determined as follows: 98.09% , 65.70% and 72.19% at pH=3.23, 6 and 4.07, initial Th(IV) concentration of 78.2,30 and 55.4 mg.L-1 and 2.08, 2.5 and 2.2 g.L-1 of resin, respectively. The kinetic and equilibrium data were accurately described by the pseudo-second order and Langmuir models. The results showed that IR-120 is a suitable adsorbent for thorium removal from aqueous solutionsکلیدواژه ها
Th(IV) removal,Response surface methodology (RSM),Central composite design,Ion exchange resin,,مقالات مرتبط جدید
اطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.