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In the present research, the performance of the cellulose sulfate microfibers (CSMFs) was investigated for the removal of cadmium sulfide nanoparticles (CdS NPs). At first, cotton waste was sulfonated by chlorosulfonic acid. The high sulfur content of the CSMFs (6.54%) and the absorbance bands appeared at 610 cm−1 (symmetric stretching vibrations) and 1205 and 1180 cm−1 (asymmetric stretching vibrations)...