نتایج جستجو برای: ion separation

تعداد نتایج: 323472  

Journal: :International Journal for Ion Mobility Spectrometry 2011

Journal: :Trends in chemistry 2021

Major technologies for metal ion recovery from water and wastewater include chemical precipitation, membrane filtration, adsorption, electrochemical separation. Recent studies have focused on membrane, methods, sophisticating them to obtain high selectivity recovery. Membrane filtration plays an important role in separating monovalent divalent ions. Metal–organic frameworks (MOFs), covalent org...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی شیمی 1387

در این تحقیق ، هدف جداسازی ناخالصی های یدید، از اسید استیک با استفاده از فرآیند تبادل یونی می باشد. اسید استیک، در تولید محصولات مختلفی، مورد استفاده قرار می گیرد که مهمترین، مورد استفاده آن در تولید مونومر وینیل استات (vam) می باشد. با توجه به اینکه ، متیل یدید در تولید اسید استیک به کار می رود همواره پس از جداسازی های متعدد، توسط روش هایی مثل تقطیر مقدار کمی متیل یدید، در اسید باقی می ماند، ک...

2008
Olivier L. Collin Carolyn M. Zimmermann Glen P. Jackson

The analysis of nine explosive compounds by gas chromatography tandem mass spectrometry (GC–MS/MS) using negative chemical ionization (NCI) was performed under two different conditions: first, a conventional GC separation coupled with a standard ion dissociation method in a quadrupole ion trap (QIT) was performed in segmented selected reaction monitoring mode; second, a fast GC separation on a ...

Journal: :Advanced sustainable systems 2022

Electrochemical ion separation is a promising technology to recover valuable ionic species from water. Pseudocapacitive materials, especially 2D are up-and-coming electrodes for electrochemical separation. For implementation, it essential understand the interplay of intrinsic preference specific (by charge/size), kinetic mobility), and crystal structure changes. Ti3C2Tz MXene chosen here invest...

2017
Zbigniew Hubicki Monika Wawrzkiewicz Grzegorz Wójcik Dorota Kołodyńska Anna Wołowicz

Ion exchange has been widely applied in technology of chemical separation of noble met‐ al ions. This is associated with dissemination of methods using various ion exchange res‐ ins which are indispensable in many fields of chemical industry. Due to small amounts of noble elements in nature and constant impoverishment of their natural raw materials, of particular importance are physicochemical ...

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