Low-Cost Pre-Treatment of Pharmaceutical Wastewater

Authors: A. Abu-Safa, S. Abu-Salah, M. Mosa, S. Gharaibeh

Abstract:

Pharmaceutical industries and effluents of sewage treatment plants are the main sources of residual pharmaceuticals in water resources. These emergent pollutants may adversely impact the biophysical environment. Pharmaceutical industries often generate wastewater that changes in characteristics and quantity depending on the used manufacturing processes. Carbamazepine (CBZ), {5Hdibenzo [b,f]azepine-5-carboxamide, (C15H12N2O)}, is a significant non-biodegradable pharmaceutical contaminant in the Jordanian pharmaceutical wastewater, which is not removed by the activated sludge processes in treatment plants. Activated carbon may potentially remove that pollutant from effluents, but the high cost involved suggests that more attention should be given to the potential use of low-cost materials in order to reduce cost and environmental contamination. Powders of Jordanian non-metallic raw materials namely, Azraq Bentonite (AB), Kaolinite (K), and Zeolite (Zeo) were activated (acid and thermal treatment) and evaluated by removing CBZ. The results of batch and column techniques experiments showed around 46% and 67% removal of CBZ respectively.

Keywords: Azraq bentonite, carbamazepine, pharmaceutical wastewater, zeolite.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1328732

References:

[1] M. Leclercq, O. Mathieu, E. Gomez, and C. Casellas, "Presence and fate of carbamazepine, oxcarbazepine, and seven of their metabolites at wastewater treatment plants," Environmental Toxicology, vol. 56, pp. 408-415, 2009.
[2] K. Tanabe, "Solid Acids and Bases", Academic Press, New York- London, 1970.
[3] H. Jacob, and G. Clarke, "Methods of soil analysis: physical methods, part 4", Soil Science Society of America Book Series, vol. 5, W. Dick. Ed. USA, Madison: Wisconsin, 2002, pp 301-302.
[4] S. Mahmoud, A. Hammoudeh, and M. Al-Noaimi, "Pretreatment effects on the catalytic activity of Jordanian bentonite", Clay and Clay Minerals, vol. 51, no. 1, pp. 52-57, 2003.
[5] R. Mokaya, and W. Jones, "Pillared clays and pillared acid activated clays: A comparative study of physical, acid catalytic properties", Journal of Catalysis, vol. 153, pp. 76-85, 1995.
[6] P.Komadel, J.Madejova, M.Janek, W.Gates, R.Kipkaptrick, and J.Stucki, "Dissolution of hectorite in inorganic acids", Clay and Clay Minerals, vol. 44, no.2, pp. 228-236, 1996.
[7] A.C.D. Newman, "Chemistry of Clay and Clay Minerals", Mineralogical Society Monograph, A. Newman, Ed. Longman Scientific and Technical, 1987, p. 371.
[8] T. Pinnavaia, "Intercalated clay catalyst", Journal of Science, vol. 220, pp. 365-371, 1983.
[9] R. Grim, Applied Clay Mineralogy. New York, McGraw-Hill, 1968, pp. 422.