کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
625475 1455423 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Extraction equilibria of picolinic acid from aqueous solution by tridodecylamine (TDA)
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Extraction equilibria of picolinic acid from aqueous solution by tridodecylamine (TDA)
چکیده انگلیسی

Pyridine compounds having a carboxyl side chain at the 2-position are attracting considerable attention for their ability. Chromium, manganese, iron, copper, zinc, and molybdenum are present as chelating agents in the human body. Picolinic acid acts as a chelating agent instead of these elements. In this study, the extraction of picolinic acid was studied using tridodecylamine (TDA) with respect to the functional groups of the diluents. All experiments reported on the extraction of picolinic acid by tridodecylamine (TDA) dissolved in different two different acetates (ethyl acetate and propyl acetate), two different alcohols (1-octanol and 1-decanol), and two different ketones (2-heptanone and 2-octanone), as well as single solvents. The experimental results of batch extraction experiments are reported as distribution coefficients, (KD=CPA*CPA), loading factors, Z, and extraction efficiency, E. All measurements were carried out at 298.15 K. The highest distribution coefficient has been obtained by 1-octanol value of 4.121 and its extraction efficiency is 80%. Linear Solvation Energy Relationship (LSER) model has been applied to the experimental data with good regression coefficient, R2:0.90. Model results are close to experimental results.

Graphical AbstractFigure optionsDownload as PowerPoint slideResearch Highlights
► Pyridine compounds, with a carboxyl side chain at the 2-position, are attracting considerable attention for their ability. This compound needs purifications like this study.
► The obtained experimental data have been modeled according to Linear Solvation Energy (LSER) model. Model results are close to experimental results.
► There are no available data about picolinic acid extraction with this extraction system TDA + diluent in the literature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 268, Issues 1–3, 1 March 2011, Pages 134–140
نویسندگان
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