An Advanced Review Focusing on the Production of Secondary Plant Biomass‐Derived Cellulose Nanocrystal‐Activated Char‐Based Polyfunctional Bionanoadsorbents for Bulk‐Scale Industrial Wastewater Purification: A Fixed‐Bed Column Adsorption Study With Mechanism and Modeling - Rahman, Md. Mahmudur; Asa, Md. Asik Uzzaman; Ahmed, Jubayer; Knani, Salah; Akter, Mst. Arbhiya; Morshed, Mosfiqur Rahman; Alam, Mosabbir; Khatun, Mst. Ima; Bardhan, Munmun (International Journal of Polymer Science, 2026)