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. 2018 Oct 24;5(10):180966. doi: 10.1098/rsos.180966

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© 2018 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 3. — Scanning electron micrographs and energy spectrum analysis of the biochars after adsorbing Zn(II): (a) LEC200, (b) LEC300, (c) LEC400 and (d) LEC500.