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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Effect of contact time on boron adsorption efficiency using the Ce-CTS composite hydrogel beads. The inserted figure is the effect of contact time with initial boron concentrations of 20 and 200 mg/dm3.