Supercritical CO₂ Assisted Synthesis of EDTA-Fe₃O₄ Nanocomposite with High Adsorption Capacity for Hexavalent Chromium

Figure 7

Effect of contact time for adsorption of chromium (VI) on IONPs and MIONPs at initial concentration 1000 mg/L, adsorbent dosage 10 mg, pH 2, and temperature 298 K.