Research Article
A Study on Astrazon Black AFDL Dye Adsorption onto Vietnamese Diatomite
Figure 3
The pH effect on the AB adsorption from aqueous solution by diatomite. Adsorption condition: initial AB concentration = 200 mg L−1, mass of adsorbent = 2.0 g, volume of solution = 1000 mL, and stirring speed = 300 rpm. The plot of ΔpH versus initial pH (inset).