. 2019 Jul 29;24(15):2755. doi: 10.3390/molecules24152755
© 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/).
Figure 9.
Color evolution of selected effluents.