Premium
Removal of cadmium(II) cations from an aqueous solution with aminothiourea chitosan strengthened magnetic biochar
Author(s) -
Li Ronghua,
Liang Wen,
Huang Hui,
Jiang Shuncheng,
Guo Di,
Li Manlin,
Zhang Zengqiang,
Ali Amajd,
Wang Jim J.
Publication year - 2018
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.46239
Subject(s) - biochar , adsorption , aqueous solution , metal ions in aqueous solution , cadmium , desorption , langmuir adsorption model , chitosan , metal , chemistry , nuclear chemistry , chemical engineering , wastewater , composite number , materials science , composite material , waste management , pyrolysis , organic chemistry , engineering
An aminothiourea chitosan modified magnetic biochar composite (TMBC) was prepared for the efficient removal of Cd(II) from wastewater. The synthesized materials were characterized, and the detailed adsorption mechanisms and thermodynamics were studied. The adsorption experiments revealed that TMBC had a higher affinity for Cd(II) than the magnetic biochar composite, raw biochar, and other carbon‐based adsorbents did. The Cd(II) adsorption process fit the pseudo‐second‐order kinetic model, and the maximum adsorption capacities on the basis of the Langmuir model were 93.72, 121.9, and 137.3 mg/g at 298, 308, and 318 K, respectively. The practical efficacy of the adsorbent was also tested with a real mine water. The metal‐ion‐loaded TMBC could be conveniently collected by a magnet and could be easily regenerated with adsorption efficiencies up to 84% after five adsorption–desorption cycles. The as‐prepared TMBC might be a promising adsorbent for the treatment of heavy‐metal‐ion‐contaminated water or highly mineralized mine water. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 46239.