کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1694383 1519067 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modified halloysite as an adsorbent for prometryn from aqueous solutions
ترجمه فارسی عنوان
هالویزیت اصلاح شده به عنوان یک جاذب برای پرومتین از محلول های آبی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
چکیده انگلیسی


• Prometryn removal from water was performed using halloysite adsorbents.
• The best modification of halloysite was the treatment with 96% H2SO4.
• The adsorption occurred most effectively at pH 5.
• Prometryn desorbed from halloysite only to small degree.

Adsorption behavior of prometryn (2,4-bis (isopropylamino)-6-methylthio-s-triazine) on halloysite minerals has been studied in order to consider the application of such adsorbents in water purification. Halloysite, activated in various ways, was characterized by ASAP, SEM/EDS. Batch mode and flow system have been employed, using prometryn aqueous solutions. Various parameters were studied for both systems. Adsorption capacity was determined as a function of adsorbate concentration, of optimum contact time, optimum dose and adsorbent fragmentation. It was found that at pH = 5 the best adsorptive properties for prometryn are obtained for halloysite treated with 96% H2SO4. Such adsorption matches Langmuir and Freundlich models and is in a good agreement with pseudo-second order kinetic model. The desorption of prometryn from halloysite was also studied. The performed studies show that halloysite treated with 96% H2SO4 holds the great potential for removal of water impurities such as prometryn.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Clay Science - Volume 114, September 2015, Pages 321–329
نویسندگان
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