Short staple microfibers (SSM) based on chitosan (CS) or silk fibroin (SF) were fabricated via the wet-rotate-spinning technique and employed to adsorb hexavalent chromium from aqueous solution. Adsorption efficiencies, physicochemical and morphological properties of CS and SF-SSM were systematically investigated and evaluated before and after adsorption of Cr(VI) using different techniques like ATR-FTIR, TGA, XRD, XPS, and SEM. CS and SF-SSM showed removal efficiency (>90 %) toward Cr(VI) ions. Pseudo-second order kinetic and Langmuir isotherm models could describe the Cr(VI) ions uptake process. Considering the inexpensive, sustainability and higher adsorption capacity of CS and SF-SSM hold great promising applications as natural adsorbent materials for removing different hazardous metals from aqueous medium.

CEITEC Central European Institute of Technology Brno University of Technology Purkyňova 9 656 123 Brno 612 00 Czechia; SCITEG a s Brno Czechia; Department of Pretreatment and Finishing of Cellulosic based Textiles Textile Industries Research Division National Research Centre 33 EL Buhouth St Dokki Giza 12622 Egypt

CEITEC Central European Institute of Technology Brno University of Technology Purkyňova 9 656 123 Brno 612 00 Czechia; SCITEG a s Brno Czechia; Faculty of Chemistry Institute of Materials Chemistry Brno University of Technology Purkyňova 464 118 Brno 612 00 Czechia

Department of Chemistry Faculty of Science Damanhour University Damanhour 25111 Egypt

Faculty of Chemistry Materials Research Centre Brno University of Technology Purkyňova 464 118 Brno 612 00 Czechia

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