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Barium-Encapsulated Biodegradable Polycaprolactone for Sulfate Removal

Department of Environmental Engineering, Inha University, Incheon 22212, Korea
Center for Nanoscale Multifunctional Materials, Mechanical & Material Engineering, Wright State University, Dayton, OH 45431, USA
Authors to whom correspondence should be addressed.
Water 2018, 10(12), 1789;
Received: 14 September 2018 / Revised: 17 November 2018 / Accepted: 28 November 2018 / Published: 6 December 2018
(This article belongs to the Special Issue Advances in Water and Wastewater Monitoring and Treatment Technology)
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Various compositions of barium carbonate (BaCO3) loaded polycaprolactone (PCL) composites were prepared, including 2.5/97.5, 10/90, 30/70, 50/50 and 90/10 (PCL/BaCO3), via re-precipitation technique. Small-scale column tests were conducted to study the efficiency of sulfate removal using the PCL/BaCO3 composites. The composites before and after their use to remove sulfate were extensively characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), high-resolution TEM (HR-TEM), and thermogravimetric analysis (TGA). As PCL is a biodegradable polymer, these composites are environmentally friendly and have several advantages over barium sulfate precipitation in overcoming clogging issues in filters or resins due to collection of natural organic matter (NOM). The media used in this study exhibited high capacity and was able to remove more than 90% sulfate from synthetic sulfate containing waters and NOM samples collected from the Ohio River. View Full-Text
Keywords: barium sulfate; biodegradable polymer; polycaprolactone; environmental remediation; water treatment barium sulfate; biodegradable polymer; polycaprolactone; environmental remediation; water treatment

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Han, C.; Nadagouda, M.N. Barium-Encapsulated Biodegradable Polycaprolactone for Sulfate Removal. Water 2018, 10, 1789.

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