I need help in research work regarding adsorption technique for waste water treatment.for that i want perform desorption study of adsorbents.plsease guide me the procedure to perform desorption study.it will be great help.
Dear Dr. Patel: The answers should be in these sorption - desorption kinetics and mechanisms publications.
69 Donald S. Gamble and Marc Lamoureux. Analytical chemical methods for determining reaction mechanisms in soils and sediments. Department of Chemistry, Saint Mary’s University. Halifax Nova Scotia B3H 3C3. Refereed proceedings, EnviroAnalysis 2006, The 6th Biennial Conference on Monitoring and Measurement of the Environment Toronto, Canada from May 15-17, (2006).
70 Donald S. Gamble. Atrazine Sorption kinetics in a characterized soil: Predictive calculations. Environ. Sci. Technol. 42, 1537 - 1541 (2008).
71 Donald S. Gamble. Herbicide sorption by immersed soils: Stoichiometry and the law of mass action in support of predictive kinetics. Environ. Sci. Technol. 43(6), 1930 - 1934 (2009).
72 D. S. Gamble, G. R. Barrie Webster, Marc Lamoureux, Quantitative Prediction Of Atrazine Sorption In A Manitoba Soil Using Conventional Chemical Kinetics Instead Of Empirical Parameters. J. Phys. Chem. C 2010, 114, 20055-20061. Internet.
73 Donald S. Gamble, G. R. Barrie Webster, and Marc Lamoureux. Pesticide reaction mechanism in soil: an interactive spreadsheet model based on conventional chemical kinetics. J. Environ. Monit., 2012, 14 (4), 1166 - 1172. Advance Article DOI: 10.1039/C2EM10366D
74 Donald S. Gamble. Discoveries Leading To Conventional Chemical Kinetics For Pesticides In Soils: A Review. Chapter 6. In, Donald L. Sparks, Ed. Advances In Agronomy Volume 120, June 2013.
75 Heather A. Gamble1, Donald S. Gamble2. A Quantitative LC-MS/MS Study of the
Partitioning, Transport, and Fate of Pesticide Residues on Soil. Journal of Environmental Protection, 2016, 7, 331-340. http://dx.doi.org/10.4236/jep.2016.73029 .
76 Donald S. Gamble and Aldo G. Bruccoleri. Pesticide regulations for agriculture: Chemically flawed regulatory practice. Journal of Environmental Science and Health, Part B. 2016, Vol. 0, No. 0, 1–7. http://dx.doi.org/10.1080/03601234.2016.1171646.
More than a dozen predictive spreadsheet models are available. Collaboration might also be available.
Donald Gamble [email protected]
Dear Patel,
I don't know what kind of experimental set up you have. Batch or Column system? Adsorption columns are generally used in wastewater treatment. The desorption of the columns can be done using EDTA. After exhaust the column, draine it off for the remaining aqueous solution. Desorption of solute from loaded adsorbent PCA can be carried out by solvent elution method using 0.05 M EDTA as eluent. Pump the EDTA solution into the column at constant temperature at a fixed flow rate (You should search appropriate flow rates for your WWT method). After the regeneration, the adsorbent column can be washed with distilled water to remove EDTA from the column before the influent wastewater will be reintroduced for the subsequent adsorption-desorption cycles. Adsorption-desorption cycles should be performed thrice using the same bed to check the sustainability of the bed for repeated use (Column Adsorption and Desorption Studies of Fluoride on Perchloric Acid
Cross-Linked Calcium Alginate Beads Y. VIJAYA and A. KRISHNAIAH. E-Journal of Chemistry http://www.e-journals.net 2010, 7(1), 265-270)
Good luck.
Dear Dr Patal
by adsorbing method you can treat wastewater , if the attached file can help you in this matter I would be glad.
Dear Olcayto Keskinkan
thank you so much for your quick response.it will be helpful for me.but i need information for Batch analysis.please guide me for same.
Dear Patel,
Please inform us about your wastewater. For example, does it contains volatile compounds? or what kind of pollutants it contains?
Dear Olcayto Keskinkan
I am working on textile wastewater contains basic dyes.
Dear Dr. Patel:
Batch and column methods have both been mentioned. In chemical engineering terms, a column experiment is described in terms of theoretical plates. A batch experiment would relate separately to each of the theoretical plates. The publications for which I gave you references report kinetics and reaction mechanisms investigated by a batch method. Predictive spreadsheet models are available. Good luck
Donald Gamble. [email protected]
Dear Patel,
The textile industry contains pollutants that are difficult to remove from the wastewater. Regeneration after adsorption is also difficult. However I suggest you electrochemical regeneration. Because you are working batch system. So check out the article I sent to you. Please inform us whether it is appropriate method for you or not..
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