[Retracted] Synthesis and Optimization of Cr (VI) Removal from Aqueous Solution by Activated Carbon with Magnetic Fe<sub>3</sub>O<sub>4</sub>Nanoparticles by Response Surface Methodology

<div>(a) Langmuir and (b) Freundlich isotherm curves at the values for best adsorption.</div>

Adsorption Science & Technology

fig6

Figure 6

Figure 6: [Retracted] Synthesis and Optimization of Cr (VI) Removal from Aqueous Solution by Activated Carbon with Magnetic Fe<sub>3</sub>O<sub>4</sub>Nanoparticles by Response Surface Methodology 

Figure 6 | [Retracted] Synthesis and Optimization of Cr (VI) Removal from Aqueous Solution by Activated Carbon with Magnetic Fe3O4Nanoparticles by Response Surface Methodology 