Research Article
Effective and Simple NaOH-Modification Method to Remove Methyl Violet Dye via Ipomoea aquatica Roots
Figure 7
Regeneration studies of NaOH-KR spent on adsorption of MV for 5 consecutive cycles with acid (pink bar), base (purple bar), water (yellow bar), and control experiment (blue bar) (mass of g; concentration of mg L-1).