Study on the Use of Activated Clay in Removal of Molasses from Wastewater in Wastewater Treatment Processes
the author of the article can submit here a request for assignment of a DOI number to this resource!
Cost of the service: euros 10,00 (for a DOI)
Different treatment techniques; based on physical, chemical or biological processes, are used in the removal of organic pollutants from wastewater streams. One of the widely used physical processes is the adsorption process using activated carbon. A modified process utilizing a combined activated carbon-clay mixture was adopted in the present study providing improved efficiency. The present work investigated the effect of the acid and alkali activated clay on the removal efficiency of molasses from a wastewater stream. Acid activated clay resulted in improved efficiency (85%) compared with alkali activated clay. The efficiency of removal increased with increasing the contact time, decreasing the initial pollutant concentration and increasing the solid to liquid ratio. The use of air circulation resulted in an increase in the rate of adsorption since the adsorption process is exothermic. It was also observed that the concentration of microorganisms produced increased as the process is left for an extended period of time. Finally, it was found that the Freundlich isotherm successfully described the adsorption process at all conditions while the Langmuir isotherm described the process only at low concentration of activated clay
Copyright © 2014 Praise Worthy Prize - All rights reserved.
Ricca F,.1972, Adsorption-Desorption Phenomena, Academic Press, New York, (1972).
R. Lal, Encyclopedia of Soil Science, (2006).
R. E. G See, R. W. Grimshaw, The Chemistry and Physics of Clays and Allied Ceramic Materials, 4th ed. (1971).
S. Guggenheim, R. T. Martin, Definition of clay and clay mineral, Clay and Clay Minerals, 43, pp. 255-256, (1995).
B. S. G. De, M. Tschapek 1972. Thermodynamics of water-vapour adsorption by mixtures of montmorillonite.
D. Tunega, G. Haberhauer, M.H. Gerzabek and H. Lischka, Theoretical study of adsorption sites on the surfaces of 1:1 clay minerals, Langmuir 18, 139-147.
Stockmeyer M. R. 1991. Applied Clay Science.Adsorption of organic compounds on bentonites. Vol. 6, Iss. 1 , pp. 39-57.
R. S. Juang; C. Wuf; R. L. Tseng, The ability of activated clay for the adsorption of dyes from aqueous solution, Vol. 18, No. 5, pp. 525-53, (1997).
G. Jiwchar, S. Nir, J. Cama, The effect of kaolinite on oxalate (bio)degradation at 25°C, and possible implications for adsorption isotherm measurements, Chemical Geology. Vol. 177, Iss. 3-4 , pp. 431-442. (2001).
A. G. Espantaleón, J. A. Nieto, M. Fernández, A. Marsal, Use of activated clays in the removal of dyes and surfactants from tannery waste waters, Applied Clay Science, Vol. 24, Iss. 1-2, pp. 105-110, (2003).
O. Hocine, M. Boufatit, A. Khouider, Use of montmorillonite clays as adsorbents of hazardous polluants, Desalination, Vol. 167 , pp. 141-145, (2004).
Y. Nuray, G. Rüya, K. Hülya, Ç. Ayla, Adsorption of benzoic acid and hydroquinone by organically modified bentonites, Colloids and Surfaces Physicochemical and Engineering Aspects, Vol. 260, Iss. 1-3, pp. 87-94, (2005).
S. S. Tahir, R. Naseem, Removal of a cationic dye from aqueous solutions by adsorption onto bentonite clay, Chemosphere 63, 1842-1848, (2006).
S. S. Tahir, R. Naseem, Removal of Cr(III) from tannery wastewater by adsorption onto bentonite clay, Separation and Purification Technology, 53, pp. 312–321, (2007).
S. Veli, B. Alyüz, Adsorption of copper and zinc from aqueous solutions by using natural clay, Journal of Hazardous Materials 149, 226–233, (2007).
L. S. Clescerl (Editor), A. G. Greanberg (Editor), A. D. Eaton (Editor), Standard method for examination of water and wastewater, 20th Ed., American Public health Association, N.Y. 2000.
R. E. Treybal, Mass-Transfer Operations, 3rd Ed., McGraw-Hill, Singapore, (1986).
- There are currently no refbacks.
Please send any question about this web site to email@example.com
Copyright © 2005-2020 Praise Worthy Prize