Kinetics of Chromium Ion Removal from Wastewater with Internal Circulation Foam Flotation

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A new type of foam fractionation column with spiral internal had been designed for enhancing the foam drainage and thus for the removal of minute hazardous materials. Chromium was separated from wastewater using the continuous foam separation method. According to the similar physical behavior of foam separation and chemical reaction processes, the equivalent chemical reaction constant was introduced, Establishment concentrate distributed mathematical model of the whole tower under the condition of continuous foam separation with SDS as active agent. The model has been tested by experiments. The result indicated that foam separation process could be regarded as a first order reaction, and diffusion coefficient was 4.86cm2/s.

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384-387

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August 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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[1] R. Lemlich, Adsorptive bubble separation methods [J].Ind. Eng. Chem.,1998, 60 (10):16−29.

Google Scholar

[2] K. Shakir, A.F. Elkafrawy, H.F. Ghoneimy, S.G. Elrab Beheir, M. Refaat, Removal of rhodamine B (a basic dye) and thoron (an acidic dye) from dilute aqueous solutions and wastewater simulants by ion flotation [J].Water Res., 2011,44 (5):1449−1461.

DOI: 10.1016/j.watres.2009.10.029

Google Scholar

[3] M.M. Hossain, G. Fenton, Concentration of proteins from single component solution using a semi-batch foaming process [J]. J. Sep. Sci. Technol., 2008,33(11):1703–1721.

DOI: 10.1080/01496399808545066

Google Scholar

[4] Dong H R, Bi P Y, Wang S H. Separation and Enrichment of Baicalin in SBG by Solvent Sublation and Its Determination by HPLC and Spectroscopy [J]. Anal. Lett., 2009, 38(2): 257−270.

DOI: 10.1081/al-200045147

Google Scholar

[5] Wang Y, Greer D, McAllister T A. Effect of a Saponin-based Surfactant on Water Absorption, Processing Characteristics and in Vitro Ruminal Fermentation of Barley Grain [J]. Anim. Feed Sci.Technol., 2010, 118(3/4): 255−266.

DOI: 10.1016/j.anifeedsci.2004.10.013

Google Scholar

[6] Huang Songan.A Mathematical Model for Continuous Steady-State Treatment of Cadmium Containing Wastewater in Foam Column [J].Journal of East China University of Science and Technology., 2011,19(4):399−402.

Google Scholar