Novel magnetic adsorbents of Clinoptilolite/Fe 3 O 4 (Clin/Fe 3 O 4) nanocomposite powders and Alginate/Clinoptilolite/Fe 3 O 4 (Alg/Clin/Fe 3 O 4) nanocomposite granules were synthesized to efficient removal of the cationic crystal violet (CV) dye in single and CV/methylene blue (MB) binary syst…