کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
152798 456509 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Statistical optimization of process parameters for the extraction of chromium(VI) from pharmaceutical wastewater by emulsion liquid membrane
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Statistical optimization of process parameters for the extraction of chromium(VI) from pharmaceutical wastewater by emulsion liquid membrane
چکیده انگلیسی

Response surface methodology (RSM) is used to optimize the process parameters for the extraction of chromium from aqueous solution of waste sodium dichromate recovered from the pharmaceutical industry wastewater using emulsion liquid membrane technique. The liquid membrane used was composed of kerosene oil as the solvent, Span-80 as the surfactant and potassium hydroxide as internal reagent and Aliquat-336 as carrier. The process parameters, namely feed concentration, pH, internal reagent concentration and surfactant concentration on the extraction of chromium were optimized using Box-Behnken design. The optimum conditions for the extraction of chromium(VI) were: feed concentration (223.55 ppm), pH (2.73), internal reagent concentration (0.72 N) and surfactant concentration (1.91%, w/w). At the optimized condition the maximum chromium extraction was found to be 97.57%.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 150, Issues 2–3, 1 August 2009, Pages 275–279
نویسندگان
, , ,