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. 2016 Apr 27;5:542. doi: 10.1186/s40064-016-2191-8

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© Kuang et al. 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 4 — Effects of pH on the adsorption of Cd(II) by kaolinite and the composite of kaolinite + EPS. Data are presented as average value ± standard deviation