Sustainable triethylenetetramine modified sulfonated graphene oxide/ chitosan composite for enhanced adsorption of Pb(II), Cd(II), and Ni (II) ions
International Journal of Biological Macromolecules(2024)
Abstract
A novel sulfonated group and triethylenetetramine modified GO/chitosan (GO -CS) adsorbent (T-SGO-CS) was successfully prepared and utilized for the adsorption of heavy metal ions from single-metal, binary-metal, and ternary-metal solutions. In a single system, the adsorption capacity was 312.28 mg/g for Pb2+, 260.52 mg/g for Cd2+, and 84.61 mg/g for Ni2+, whereas, Adsorption of Pb(II), Cd(II), and Ni(II) in binary and ternary systems was systematically studied. In tertiary systems, the effect of competitive adsorption was more pronounced. In addition, T-SGO-CS exhibited a high adsorption capacity and was recyclable for Pb2+, Cd2+, and Ni2+. T-SGO-CS is a novel and highly efficient adsorbent for omnidirectionally enhancing the adsorption of Pb2+, Cd2+, and Ni2+, as demonstrated by these results. Therefore, T-SGO-CS could be investigated as a potential new material for future applications in heavy metal removal.
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Key words
Heavy metal ions,T-SGO-CS,Multicomponent adsorbate system,Competitive adsorption
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