Sulfonated modification of cotton linter and its application as adsorbent for high-efficiency removal of lead(II) in effluent

- The role of sulfonated cellulose on adsorption of Pb2+ was first studied.
- Adsorption of Pb2+ on sulfonated cellulose can reach equilibrium within 8 min.
- The kinetics of adsorption followed the pseudo-second-order kinetic model.
- The adsorption process is non-spontaneous and endothermic.