Studies on Removal of Hexavalent Chromium Ion from Aqueous Solution Using Polyaniline Composite

2016 ◽  
Vol 19 (2) ◽  
pp. 58-68 ◽  
Author(s):  
Emad .M. Al-kinani ◽  
Keyword(s):  
Aqueous Solution ◽  
Hexavalent Chromium ◽  
Chromium Ion

Adsorption Study of Carbonate Hydroxylapatite for Hexavalent Chromium Ion from Aqueous Solution at Different Carbon Content

2011 ◽  
Vol 233-235 ◽  
pp. 1560-1563
Author(s):  
Hai Rong Yin ◽  
Ming Zhen Yang ◽  
Tao Wang ◽  
Min Ge Feng
Keyword(s):  
Aqueous Solution ◽  
Carbon Content ◽  
Adsorption Capacity ◽  
Hexavalent Chromium ◽  
Ph Value ◽  
Adsorption Study ◽  
Adsorption Time ◽  
Chromium Ion ◽  
Carbonate Hydroxylapatite

The adsorption of Cr6+ from aqueous solution by carbonate hydroxylapatite (CHAP) with different carbon content synthesized by precipitation. The CHAP was characterized and analyzed by TEM、FTIR and XRD. And adsorption was effected by the pH value、CHAP usage、adsorption time and other factors. The results show that under certain conditons, adsorption capacity enhanced with the carbon content increasing.

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.

Biosorption of hexavalent chromium from aqueous solution using chemically modifiedSpirulina platensisalgal biomass: an ecofriendly approach

2015 ◽  
Vol 57 (18) ◽  
pp. 8504-8513 ◽  
Author(s):  
Shubha M. Hegde ◽  
R.L. Babu ◽  
E. Vijayalakshmi ◽  
Rajeshwari H. Patil ◽  
M. Naveen Kumar ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Hexavalent Chromium
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