Simultaneous adsorption and reduction of hexavalent chromium on the poly(4-vinyl pyridine) decorated magnetic chitosan biopolymer in aqueous solution

2019 ◽  
Vol 293 ◽  
pp. 122038 ◽  
Author(s):  
Chaofan Zheng ◽  
Huaili Zheng ◽  
Yongjun Sun ◽  
Bincheng Xu ◽  
Yili Wang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Hexavalent Chromium ◽  
Magnetic Chitosan ◽  
Simultaneous Adsorption ◽  
Vinyl Pyridine ◽  
Chitosan Biopolymer

Synthesis of titanium cross-linked chitosan composite for efficient adsorption and detoxification of hexavalent chromium from water

2015 ◽  
Vol 3 (1) ◽  
pp. 331-340 ◽  
Author(s):  
Lingfan Zhang ◽  
Wei Xia ◽  
Xin Liu ◽  
Wenqing Zhang
Keyword(s):  
Hexavalent Chromium ◽  
Metal Binding ◽  
Cross Linking ◽  
Binding Reaction ◽  
Simultaneous Adsorption ◽  
Chitosan Biopolymer ◽  
Chitosan Composite

For the simultaneous adsorption and detoxification of hexavalent chromium from water, a new titanium–chitosan (Ti–CTS) composite was synthesized through a metal-binding reaction between titanium ions and the chitosan biopolymer followed by cross-linking with glutaraldehyde.

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

Simultaneous adsorption of nitrogenous heterocyclic compounds by granular activated carbon: parameter optimization and multicomponent isotherm modeling

RSC Advances ◽  
2014 ◽  
Vol 4 (75) ◽  
pp. 39732-39742 ◽  
Author(s):  
Ajay Devidas Hiwarkar ◽  
Vimal Chandra Srivastava ◽  
Indra Deo Mall
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Parameter Optimization ◽  
Heterocyclic Compounds ◽  
Granular Activated Carbon ◽  
Isotherm Modeling ◽  
Simultaneous Adsorption ◽  
Multicomponent Isotherm

Granular activated carbon used for simultaneous adsorption of pyrrole and indole from aqueous solution.

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