Polyamidoamine dendrimers modified silica gel for uranium(VI) removal from aqueous solution using batch and fixed–bed column

2008 ◽  
Vol 102 ◽  
pp. 197-210 ◽  
Author(s):  
A.F. Shaaban ◽  
A.A. Khalil ◽  
T.A. Lasheen ◽  
El Said A. Nouh ◽  
Huda Ammar
Keyword(s):  
Aqueous Solution ◽  
Silica Gel ◽  
Fixed Bed ◽  
Modified Silica ◽  
Modified Silica Gel ◽  
Fixed Bed Column ◽  
Polyamidoamine Dendrimers

Selective Extraction and Detection of Hg2+in Aqueous Solution by using Rhodamine Dye-Modified Silica Gel

2014 ◽  
Vol 49 (17) ◽  
pp. 2721-2727 ◽  
Author(s):  
Zhuqing Wang ◽  
Chen Dong ◽  
Min Wang ◽  
Youcun Chen ◽  
Genhua Wu
Keyword(s):  
Aqueous Solution ◽  
Silica Gel ◽  
Selective Extraction ◽  
Modified Silica ◽  
Modified Silica Gel ◽  
Rhodamine Dye

Synthesis Process and Structure of Al/Mg Modified Silica-gel Particle.

2000 ◽  
Vol 116 (1) ◽  
pp. 56-61
Author(s):  
Tatsuo YAMAGUCHI ◽  
Toshiaki NAKAI ◽  
Kunihiko TAKEDA
Keyword(s):  
Silica Gel ◽  
Synthesis Process ◽  
Modified Silica ◽  
Modified Silica Gel

Breakthrough analysis for hexavalent chromium removal from drinking water in a fixed bed column

2009 ◽  
Vol 9 (6) ◽  
pp. 661-670 ◽  
Author(s):  
S. P. Dubey ◽  
K. Gopal
Keyword(s):  
Aqueous Solution ◽  
Hexavalent Chromium ◽  
Fixed Bed ◽  
Entropy Change ◽  
Spectroscopic Technique ◽  
Fixed Bed Column ◽  
Chromium Vi ◽  
Fixed Bed Adsorption ◽  
Optimal Column ◽  
Eucalyptus Bark

The activated carbon of Eucalyptus globulus was tested for their effectiveness in removing hexavalent chromium from aqueous solution using column experiments. Result revealed that adsorption of chromium(VI) on eucalyptus bark carbon was endothermic in nature. Thermodynamic parameters such as the entropy change, enthalpy change and Gibbs free energy change were found to be 1.39 kJ mol−1 K−1, 1.08 kJ mol−1 and −3.85 kJ mol−1, respectively. Different chromium concentrations were used for the fixed bed adsorption studies. The pre- and post-treated adsorbents were characterized using a FTIR spectroscopic technique. It was concluded that Eucalyptus bark carbon column could be used effectively for removal of hexavalent chromium from aqueous solution at optimal column conditions. This study showed that this biological material is potential adsorbent of Cr(VI) from water.

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