کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6584511 | 456358 | 2015 | 42 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ion exchange treatment of saline solutions using Lanxess S108H strong acid cation resin
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کلمات کلیدی
EABStemperature (K)MPSDKTHDVBQmaxCEHCSGSSEIsotherm - ایزوترمIon exchange - تبادل یونیHybrid - ترکیبیKYN - جنسیتCoal seam - جوش زغال سنگdivinyl benzene - دیوینیل بنزنResin - رزینColumn - ستونSodium chloride - سدیم کلریدEquivalents - معادلaverage relative error - میانگین خطای نسبیARE - هستندCoal seam gas - گاز زغال سنگ
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Common to many types of water and wastewater is the presence of sodium ions which can be removed by desalination technologies, such as reverse osmosis and ion exchange. The focus of this investigation was ion exchange as it potentially offered several advantages compared to competing methods. The equilibrium and column behaviour of a strong acid cation (SAC) resin was examined for the removal of sodium ions from aqueous sodium chloride solutions of varying normality as well as a coal seam gas water sample. The influence of the bottle-point method to generate the sorption isotherms was evaluated and data interpreted with the Langmuir Vageler, Competitive Langmuir, Freundlich, and Dubinin-Astakhov models. With the constant concentration bottle point method, the predicted maximum exchange levels of sodium ions on the resin ranged from 61.7 to 67.5Â g Na/kg resin. The general trend was that the lower the initial concentration of sodium ions in the solution, the lower the maximum capacity of the resin for sodium ions. In contrast, the constant mass bottle point method was found to be problematic in that the isotherm profiles may not be complete, if experimental parameters were not chosen carefully. Column studies supported the observations of the equilibrium studies, with maximum sodium loading of ca. 62.9Â g Na/kg resin measured, which was in excellent agreement with the predictions of the data from the constant concentration bottle point method. Equilibria involving coal seam gas water were more complex due to the presence of sodium bicarbonate in solution, albeit the maximum loading capacity for sodium ions was in agreement with the results from the more simple sodium chloride solutions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 280, 15 November 2015, Pages 525-535
Journal: Chemical Engineering Journal - Volume 280, 15 November 2015, Pages 525-535
نویسندگان
Graeme J. Millar, Sara J. Couperthwaite, Mitchell de Bruyn, Chun Wing Leung,