Ong Siew TengChi-Kien Seou2025-01-032025-01-032014-1210.1080/19443994.2013.830684https://dspace-cris.utar.edu.my/handle/123456789/9903Removal of reactive black 5 from aqueous solution using chitosan beads: optimization by Plackett–Burman design and response surface analysisjournal-article