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Water 2017, 9(4), 250; doi:10.3390/w9040250

Adsorptive Removal of Carbamazepine and Diatrizoate in Iron Oxide Nanoparticles Amended Sand Column Mimicing Managed Aquifer Recharge

1
Department of Environment Engineering, INHA University, Incheon 22212, Korea
2
Department of Biotechnology, Karunya University, Coimbatore 641114, India
*
Author to whom correspondence should be addressed.
Academic Editors: Niels Hartog and Pieter J. Stuyfzand
Received: 6 February 2017 / Revised: 29 March 2017 / Accepted: 30 March 2017 / Published: 2 April 2017
(This article belongs to the Special Issue Water Quality Considerations for Managed Aquifer Recharge Systems)
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Abstract

The sorption–desorption of recalcitrant pharmaceuticals in sand/soil columns can be used to infer performance of managed aquifer recharge. Removal of carbamazepine (CBZ) and diatrizoate (DTZ) from synthetic wastewater, containing 100 µg·L−1 of each pharmaceuticals, was studied in recirculating sand columns amended with uncoated or methacrylic acid (MAA) coated magnetite nanoparticles. Removal of CBZ and DTZ in MAA-magnetite column (68.34% and 61.91%, respectively) was much higher than that with uncoated magnetite (53.47% and 50.26%, respectively). Rapid decrease of dissolved organic carbon concentrations across nanoparticle amended columns (between 42.28% and 50.08% on Day 1), followed by slow recuperation suggests adsorption–desorption dynamics and competition of dissolved organic matter for sorption sites. Core-level binding energy and charge analysis for Fe(2s) and O(1s) in X-ray photoelectron spectroscopy suggests involvement of physisorption process on the NP surfaces. View Full-Text
Keywords: MAR; column test; pharmaceutical pollutants; methacrylic acid; magnetite MAR; column test; pharmaceutical pollutants; methacrylic acid; magnetite
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Yoon, S.U.; Mahanty, B.; Kim, C.G. Adsorptive Removal of Carbamazepine and Diatrizoate in Iron Oxide Nanoparticles Amended Sand Column Mimicing Managed Aquifer Recharge. Water 2017, 9, 250.

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