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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:59 |
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Conference: Bucharest University Faculty of Physics 2022 Meeting
Section: Physics and Technology of Renewable and Alternative Energy Sources
Title:
Removal of pharmaceutical compounds from water using natural filtering materials
Authors:
Ioana Diana SOMOIAG (1), Sanda VOINEA (1), Cornelia NICHITA (1,2)
Affiliation:
1)University of Bucharest, Faculty of Physics, 3Nano-SAE Research Center, MG-38, 405 Atomistilor Street, 077125, Magurele, Romania, cornelia.nichita@unibuc.ro, cornelia@3nanosae.org
2)National Institute for Chemical – Pharmaceutical Research and Development, 112 Vitan Avenue, 031299, Bucharest, Romania, cornelia@yahoo.com
E-mail
cornelia.nichita@unibuc.ro, cornelia@3nanosae.org
Keywords:
pharmaceutical pollution, water environment, natural filtering
Abstract:
The pharmaceutical industry is in continuous development both due to the high demand of the consumer market and due to the scientific progress, which has led to the very rapid development of new therapeutic molecules, generating as a side effect, the acceleration of environmental pollution. The environment and health are directly or indirectly affected by pharmaceuticals in water, especially in the vicinity of industrial pharmaceutical areas. Furthermore, it has been found that active substances (drugs) and metabolites from residential and hospital areas as well as improper disposal of expired products have a detrimental effect on the aquatic environment. Once in the environment, natural transformation processes act on drugs and produce degradation compounds that create difficulties in both environmental analysis and decontamination processes. In the present paper, the removal effect from water of some pharmaceutical’s diclofenac sodium, paracetamol and spaverin (drotaverine hydrochloride) using filter materials was evaluated by UV-VIS spectroscopy (Jasco, Japan, V-570 spectrophotometer). Spectra of the samples were acquired in the range of 200-800 nm and their monitoring highlighted the decreasing of the absorbance value at the wavelengths corresponding to the analysed pollutants. Also, the absorption capacity (CA%) of some natural filtering materials: montmorillonite clay, micronized activated zeolite and activated carbon was also evaluated. Following the application of the removal methods, it was found that montmorillonite clay is the most efficient filter material (CA = 51%), followed by micronized activated zeolite (CA = 43%) and activated carbon (41%). The study also included testing the combinations between these materials and found that the combination of the three is the most effective, having a value of absorption capacity, CA = 81%.
Acknowledgement:
The support from the CTT 3 Nano-SAE Research Centre and the support from the Materials and Devices are thankfully acknowledged.
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