A Comparative Electrochemical-Ozone Treatment for Removal of Phenolphthalein

<div>(a) Influence of the COD removal; (b) UV-Vis spectra: (<svg height="5.44961pt" id="M33" style="vertical-align:-0.04982042pt" version="1.1" viewbox="-0.0498162 -5.39979 10.7996 5.44961" width="10.7996pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M744 70V414H76V70H744Z"></path><glyph.data ascent="900" descent="-389" horiz-adv-x="820" vert-adv-y="820"></glyph.data></g></svg>) PHPH solution in the electrooxidation treatment to pH (<svg height="8.76399pt" id="M34" style="vertical-align:-0.9893103pt" version="1.1" viewbox="-0.0498162 -7.77468 9.05108 8.76399" width="9.05108pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M659 255L343 571L27 255L343 -61L659 255ZM582 255L343 16L104 255L343 494L582 255Z" id="g117-130"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="686" vert-adv-y="686"></glyph.data></g></svg>) 9, (<svg height="7.34169pt" id="M35" style="vertical-align:-0.3499303pt" version="1.1" viewbox="-0.0498162 -6.99176 7.75925 7.34169" width="7.75925pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M540 9V501H48V9H540Z" id="g114-154"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="587" vert-adv-y="587"></glyph.data></g></svg>) 7, and (○) 3.</div>

Journal of Chemistry

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Figure 4

Figure 4: A Comparative Electrochemical-Ozone Treatment for Removal of Phenolphthalein 