Adsorption of metal ions on lignin.
By Xueyan Guo, Shuzhen Zhang, X. Shan. Journal of Hazardous Materials, 2008
723 citations recorded by the source corpus.
This study investigated the adsorption of the heavy metal ions Pb(II), Cu(II), Cd(II), Zn(II), and Ni(II) on a lignin isolated from black liquor, a waste product of the paper industry. Lignin has affinity with metal ions in the following order: Pb(II)>Cu(II)>Cd(II)>Zn(II)>Ni(II). The adsorption kinetic data can be described well with a pseudosecond-order model and the equilibrium data can be fitted well to the Langmuir isotherm. Metal ion adsorption was strongly dependent on pH and ionic strength. Surface complexation modelling was performed to elucidate the adsorption mechanism involved. This shows that lignin surfaces contain two main types of acid sites attributed to carboxylic- and phenolic-type surface groups and the phenolic sites have a higher affinity for metal ions than the carboxylic sites.
Subfields: Analytical Chemistry, Biomedical Engineering, Water Science and Technology
View Paper: https://www.semanticscholar.org/paper/5b423f4ccdaaef9576e1aa0a3daf8e885804bb23
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Citations in the corpus
- Lignin: Recent advances and emerging applications (2014, background): “•• [87] Guo XY, Zhang SZ, Shan XQ.”
- Remediation of Heavy Metals by Biomolecules: A Review (2015, background): “The binding of metals to (γGlu-Cys)4-Gly, a phytochelatin, decreases in the following order: Cd2+ > Zn2+ > Ni2+ >Co2+ (Viswanathan et al., 2012).”
- Development of novel chitosan-lignin composites for adsorption of dyes and metal ions from wastewater. (2014, background): “[3] X.”
- Cr(VI) and Cr(III) removal from aqueous solution by raw and modified lignocellulosic materials: a review. (2010, background): “Lignin accounts for 23–33% of softwood mass, for 16–25% of hardwood mass and for 26–33% of plant biomass [16].”
- Natural antioxidants as stabilizers for polymers (2017, background): “polyphenol structure, lignin has metal ion chelating [152], radical scavenging and stabilizing effect in polymers.”