Skip to Main Content
Aldehyde-functionalized porous nanocellulose for effective removal of heavy metal ions from aqueous solutionsAuthor(s): C. Yao; F. Wang; Z. Cai; X. Wang
Source: RSC Adv. 6(95): 92648-92654
Publication Series: Scientific Journal (JRNL)
Station: Forest Products Laboratory
Download Publication (703.0 KB)
DescriptionNanoscale sorption is a promising strategy for catalyst and purification system design. In this paper, cellulose nanofibrils (CNFs) were densely attached with aldehyde functional groups on the surface via a mild periodate oxidation process, and then applied as mesoporous sorbents to remove Cu(II) and Pb(II) from aqueous solutions. In the studied concentration range (0.6–1.0 mmol L-1), a removal capacity of 0.75 mmol g-1 for Pb(II) and 0.58 mmol g-1 for Cu(II) was obtained. It is higher than most reported results over a much broader concentration range. Furthermore, the physical chemistry of the sorption process was studied in terms of sorption kinetics, sorption isotherm study and thermodynamic study. The results showed that the sorption process is under the combined influences of reaction kinetics, film diffusion and intraparticle diffusion, and follows the Langmuir model of monolayer adsorption. The sorption is spontaneous and endothermic. This development demonstrates an ecofriendly and costeffective method with high level effectiveness of metal ion removal.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationYao, C.; Wang, F.; Cai, Z.; Wang, X. 2016. Aldehyde-functionalized porous nanocellulose for effective removal of heavy metal ions from aqueous solutions. Royal Society of Chemistry Advances. 6(95): 92648-92654.
KeywordsCellulose nanofibrils, penodate oxidation, heavy metal removal
- Solution chemistry effects on orthophosphate adsorption by cationized solid wood residues
- Orthophosphate sorption onto lanthanum-treated lignocellulosic sorbents
- Eliminating inhibition of enzymatic hydrolysis by lignosulfonate in unwashed sulfite-pretreated aspen using metal salts
XML: View XML