Optimization of Sorption Parameters for Color Removal of Textile Dye by Cross-linked Chitosan Beads Using Box-Behnken DesignAli H. Jawad, Nur Shazwani Abdul Mubarak and W. I. NawawiMATEC Web of Conferences, 47 (2016) 05009DOI: https://doi.org/10.1051/matecconf/20164705009