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. 2019 Jan 27;12(3):395. doi: 10.3390/ma12030395

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© 2019 by the authors.

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/).

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Plots of the amounts absorbed of Cu²⁺ at 30 min at each initial concentration of Cu²⁺, (A): Experimental amounts of Cu²⁺ adsorbed at 30 min (q_t), (B): Percentages of removal at 30 min (%).