Wastewater pollution is a major issue requiring advanced treatment methods such as nanotechnologies. In particular, nanocelluloses appear promising as adsorbents due to their elevated surface area, which can be functionalized. Here we review cellulose-based beads with focus on preparation, properties, kinetics, adsorption isotherm modeling and application for wastewater treatment, especially for the removal of metal ions and dyes. Preparation of cellulose-based beads is mainly done by the ionotropic gelation method. High adsorption capacities up to 568.62 mg g⁻¹ for heavy metal ions and 1550.55 mg g⁻¹ for dyes have been reported. We also discuss the regeneration capability of cellulose-based beads.

废水污染是一个需要先进处理方法（如纳米技术）的主要问题。特别是，纳米纤维素因其高表面积而有望用作吸附剂，并且可以进行功能化。在这里，我们回顾了基于纤维素的珠子，重点是制备、性质、动力学、吸附等温线建模和废水处理应用，尤其是去除金属离子和染料。纤维素基珠粒的制备主要采用离子凝胶法。据报道，对重金属离子的吸附容量高达 568.62 mg g ^{-1 ，对染料的吸附容量高达 1550.55 mg g -1}。我们还讨论了基于纤维素的珠子的再生能力。