INVESTIGATION OF DESORPTION KINETICS AND EQUILIBRIUM OF AN ANIONIC DYE FROM MAGNETIC POLYMER ADSORBENTS

Date

2015-09-03

Author

Akın, Deniz
Yakar, Arzu
Gündüz, Ufuk

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Dyes, which are used in different industries such as paper, plastics, leather, pharmaceutical, food, cosmetics, textiles, etc., constitute a major class of environmental pollutants. In recent studies, magnetic adsorbents combining magnetic separation technology with the adsorption process has been used to remove dyes from industrial wastewaters. The main advantages of the adsorbents are possible to be easily and simply separated from process media in a short time using the external magnetic field and will be reused. In present work, desorption behavior of the dye adsorbed particles was investigated. For this purpose, magnetic polymeric particles were used as adsorbents and Bromothymol Blue (BB) selected as an anionic dye. In order to determine the desorption pattern of the anionic dye from the magnetic polymeric particles, the particles were suspended in phosphate-buffered saline solution and maintained at 150 rpm. At predetermined time intervals, the samples were removed and the amount of desorbed BB was analyzed with a UV-vis spectrophotometer. The desorption kinetics and equilibrium of BB from the particles with time in pH 7.4 and 5 phosphate buffer solutions have clearly shown that the desorption of BB is affected by the characteristics (nano/micro) of the particles and there are significant differences in the desorption profiles between pH values.

Subject Keywords

Magnetic adsorbent, Desorption, Anionic dye, Regeneration

URI

https://hdl.handle.net/11511/73325
https://cest2015.gnest.org/papers/cest2015_00564_poster_paper.pdf

Conference Name

Proceedings of the 14th International Conference on Environmental Science and Technology (3-5 September 2015)

Collections

Graduate School of Natural and Applied Sciences, Conference / Seminar

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Citation Formats

D. Akın, A. Yakar, and U. Gündüz, “INVESTIGATION OF DESORPTION KINETICS AND EQUILIBRIUM OF AN ANIONIC DYE FROM MAGNETIC POLYMER ADSORBENTS,” presented at the Proceedings of the 14th International Conference on Environmental Science and Technology (3-5 September 2015), Rhodes, Greece, 2015, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/73325.