Adsorptive Degradation of Hexavalent Chromium from Aqueous Solution using Coconut shell as a green adsorbent

2009 ◽

Vol 9 (6) ◽

pp. 661-670 ◽

Cited By ~ 2

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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Optimization of Adsorption Parameters for Effective Removal of Hexavalent Chromium Using Simarouba glauca from Aqueous Solution

Water Conservation Science and Engineering ◽

10.1007/s41101-021-00106-z ◽

2021 ◽

Author(s):

Alka Banchhor ◽

Madhurima Pandey ◽

Piyush Kant Pandey

Keyword(s):

Aqueous Solution ◽

Hexavalent Chromium ◽

Adsorption Parameters ◽

Effective Removal ◽

Simarouba Glauca

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Effective removal of Hexavalent Chromium from aqueous solution by ZnCl2 modified biochar: effects and response sequence of the functional groups

Journal of Molecular Liquids ◽

10.1016/j.molliq.2021.116149 ◽

2021 ◽

pp. 116149

Author(s):

Niandong Guo ◽

Xiaofan Lv ◽

Qi Yang ◽

Xing Xu ◽

Haiyan Song

Keyword(s):

Aqueous Solution ◽

Functional Groups ◽

Hexavalent Chromium ◽

Response Sequence ◽

Modified Biochar ◽

Effective Removal

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

Desalination and Water Treatment ◽

10.1080/19443994.2015.1019370 ◽

2015 ◽

Vol 57 (18) ◽

pp. 8504-8513 ◽

Cited By ~ 5

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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Adsorption of Phenol from Aqueous Solution Using Activated Carbon prepared from Coconut Shell

Journal of Chemical Engineering ◽

10.3329/jce.v29i1.33812 ◽

2017 ◽

Vol 29 (1) ◽

pp. 9-13

Author(s):

Masuma Sultana Ripa ◽

Rafat Mahmood ◽

Sabrina Khan ◽

Easir A Khan

Keyword(s):

Aqueous Solution ◽

Activated Carbon ◽

Adsorption Isotherm ◽

Iodine Number ◽

Chemical Engineering ◽

Coconut Shell ◽

Physical Activation ◽

Batch Adsorption ◽

Adsorption Model ◽

Solution Ph

Adsorption separation of phenol from aqueous solution using activated carbon was investigated in this work. The adsorbent was prepared from coconut shell and activated by physical activation method. The coconut shell was first carbonized at 800°C under nitrogen atmosphere and activated by CO2 at the same temperature for one hour. The prepared activated carbon was characterized by Scanning Electron Microscope (SEM) and BET Surface Analyzer and by the determination of iodine number as well as Boehm titration. The iodine number indicates the degree of relative activation of the adsorbent. The equilibrium adsorption isotherm phenol from aqueous solution was performed using liquid phase batch adsorption experiments. The effect of experimental parameters including solution pH, agitation time, particle size, temperature and initial concentration was investigated. The equilibrium data was analyzed using Langmuir and Freundlich adsorption model to describe the adsorption isotherm and estimate the adsorption isotherm parameters. The results indicate the potential use of the adsorbent for removal of phenol from the aqueous solution.Journal of Chemical Engineering, Vol. 29, No. 1, 2017: 9-13

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