Remediation of Anionic Dye (Bromphenol Blue) from Aqueous Solutions by Solvent Sublation
DOI:
https://doi.org/10.20535/1810-0546.2015.2.91691Keywords:
Dye, Bromphenol Blue, Optimum conditions, Mathematical model, Sublatе spectrophotometryAbstract
Background. The accumulation of toxic effluent components is a considerable hazard to water resources potential of the country. It particularly relates to waste water pollutants belonging to II–IV hazard classes such as organic dyes and diluents.
Objective. The goal of this research was to investigate the main principles of Bromphenol Blue remediation from water by solvent sublation technique and to determine optimum process conditions.
Methods. Bromophenol blue (BB), an anionic dye, was removed from aqueous solution by solvent sublation of a BB – hexadecylpyridium complex (sublate) into isopentanol. The pH of the solution was determined by potentiometric method. Dye concentrations of the sample solutions were measured with the use of absorption spectroscopy.
Results. The effects of the following parameters on the solvent sublation were experimentally studied: the molar ratio of hexadecylpyridium chloride (HPC) to BB, pH of the aqueous phase, the removal process duration, type of organic solvent, the size of bubbles generated in the sparger and the addition of electrolytes (like KCl) and nonhydrophobic organic compounds (like ethanol). By making central composite orthogonal design and deriving second order mathematical model with the aid of MS Excel 2003 it was found that the maximum efficiency of depicted process can be attained in a case of carrying it out under the following optimum conditions: temperature 10 °C, surfactant/dye molar ratio 1.94:1; process duration – 15.3 min.
Conclusions. Within this research the main principles of Bromophenol Blue removal from water by solvent sublation were investigated. The second order experiment statistical model was derived with the use of central composite orthogonal design. The maximum relative standard deviation was equal to 4,7 %. Optimum conditions were determined: According to obtained results the highest level of BB elimination reached within the experiment was equal to 97.5 % and the residual dye content didn’t exceed the maximum allowable concentration (the M.A.C.) of acidic dyes 0.25 mg/dm3.References
E. Forgacs et al., “Removal of synthetic dyes from wastewaters: a review”, Environment Int., vol. 30, pp. 953–971, 2004.
L. Nesterova and H. Saribekov, “The efficiency of the use of circulating water consumption systems in textile plants”, South-European J. Adv. Technol., vol. 4/8, no. 46, pp. 25–28, 2010.
L. Singh and V.P. Singh, “Biodegradation of textile dyes, Bromophenol blue and Congo red by fungus Aspergillus Flavus”, Environ. We Int. J. Sci. Tech., vol. 5, pp. 235–242, 2010.
T. Robinson et al., “Remediation of dyes in textile effluent: a critical review on current treatment technologies with a proposed alternative”, Bioresource Technology, vol. 77, pp. 247–255, 2001.
K.T. Valsaraj et al., “Thibodeaux L.J. Nonfoaming adsorptive bubble separation processes. Review”, Separations Technol., vol. 1, pp. 234–244, 1991.
Bi P et al., “The recent progress of solvent sublation. Review”, J. Chromatography A, vol. 1217, pp. 2716–2725, 2010.
F. Sebba, Ion Flotation. New York: Elsevier, 1962.
K. Sobianowska et al., “Principles and application of solvent sublation – a Review”, Ars Separatoria Acta, vol. 7, pp. 23–38, 2009/2010.
Y. Lu et al., “The Removal of Bromphenol blue from water by solvent sublation”, Separation Sci. Technol., vol. 36, no. 16, pp. 3763–3776, 2001.
А. Kontsevoy et al., Computer Workshop on the Subject “Research Methodology”. Kyiv, Ukraine: NTUU “KPI”, 2013, 286 p. (in Ukrainian).
А. Kontsevoy et al., Algorithmization and Programming of Scientific & Technical and Technological Calculations. Study Guide. Kyiv, Ukraine: NTUU “KPI”, 2013, 116 p. (in Ukrainian).
Downloads
Published
Issue
Section
License
Copyright (c) 2017 NTUU KPI Authors who publish with this journal agree to the following terms:- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under CC BY 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work
