| Adsorption of Ionic Liquids From Aqueous Solutions By Activated Carbon
Ionic liquids have been used in many areas such as food industry, cellulose processes, nuclear industry, solar energy applications, hydrogen storage, and waste recycling.
The increase of ionic liquids caused a lot of environmental problems. Therefore suitable treatment systems are required to remove these substances from waters.
Adsorption is a widely used process to remove organic and inorganic pollutants from waters.
The aim of this study to produce activated carbons from Turkish coals and to use those activated carbons in the removal of ionic liquids. In this study different activated carbons were produced and used to remove ionic liquids. Physical and chemical activation methods were used. The best results were obtained for the adsorbents produced using physical methods.
Experiments were carried out as a function of time, initial concentration and temperature. Results of kinetic experiments were evaluated using Lagergen equation. The Langmuir and Freundlich isotherms were used and the constants of these isotherms were calculated.
Thermodynamic parameters were calculated and it was shown that adsorption process for each ionic liquid solution was exothermic. It was also found that entropy change of adsorption process for each ionic liquid solution was less than zero. Change of free energy for each ionic liquid solution was found to be less than zero. This result shown that adsorption process for each ionic liquid was spontaneous.
ZEYLAN Burcu
Danışman : Yrd. Doç. Dr. Tuba ŞİŞMANOĞLU
Anabilim Dalı : Kimya
Programı : Fiziksel Kimya
Mezuniyet Yılı : 2011
Tez Savunma Jürisi : Yrd. Doç. Dr. Tuba ŞİŞMANOĞLU
ProF.Dr. Ayşe Zehra AROĞUZ
Prof.Dr. Gülten ATUN
Prof.Dr. Ayben KİLİSLİOĞLU
Prof.Dr.Bahriye FİLİZ ŞENKAL
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