Construction of a Carbon/Lignosulfonate Adsorbent to Remove Pb²⁺ and Cu².

ABSTRACT: Removing heavy metal ions from water is an important issue to improve water quality. However, using cost-effective and more environmentally friendly adsorbents to achieve efficient adsorption capacity remains a challenge. Carbon spheres were prepared by the hydrothermal method and then combined with sodium lignosulfonate to form a lignosulfonate carbon (C/SL) adsorbent. C/SL achieved the adsorption of Pb²⁺ and Cu²⁺ after 60 min (the adsorption capacity was 281 mg g^-1 for Pb²⁺ and 276mg g^-1 for Cu²⁺) and had good selectivity and reusability (5 cycles). The simulated experimental data show that the pseudo-second-order kinetics and Langmuir isotherm are closer to the actual adsorption. Thermodynamic studies show that the adsorp

SUBMITTER: Bai L 

PROVIDER: S-EPMC8756795 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature