The sorption of monovalent cations onto wood flour and holocelluloses of Norway spruce: molecular interactions during LiCl impregnation
Artikel i vetenskaplig tidskrift, 2017

Active functional groups and interactions involved in the sorption of Li+ ions from an aqueous LiCl solution onto the Norway spruce sapwood (sW) flour have been investigated. To this purpose, sW was delignified by peracetic acid (PAA) treatments and the resulting holocelluloses (HC6 h, HC24 h, HC51 h, HC72 h, where the lower case data indicate the PAA treatment time) with various lignin contents were immersed in aqueous solution of LiCl and the sorption effects were studied by flame atomic emission spectroscopy (FAES), attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), and X-ray photoelectron spectroscopy (XPS). The Brunauer- Emmett-Teller (BET) specific surface area increased from 1.5±0.0 m2g−1 to 2.4±0.1 m2g−1 for HC6 h, and from 1.6±0.03 m2g−1 to 2.7±0.6 m2g−1 for HC72 h upon LiCl treatment. It was found that Li+/Cl− retention occurs predominantly via O-containing functionalities and the carbohydrate-rich samples sorbed more Li+. Upon LiCl treatment, the mobility and accessibility of the wood matrix was enhanced, possibly by interference of the introduced ions with the existing intermolecular bonds.

molecular interactions

BET measurements of surface area

wood

flame atomic emission spectroscopy (FAES)

ATR-FTIR spectroscopy

sorption

monovalent cation

X-ray photoelectron spectroscopy (XPS)

delignification by PAA

impregnation with LiCl

Författare

Reddysuresh Kolavali

Kemi och kemiteknik, Kemiteknik, Skogsindustriell kemiteknik

Merima Hasani

Wallenberg Wood Science Center (WWSC)

Kemi och kemiteknik, Kemiteknik, Skogsindustriell kemiteknik

Holzforschung

0018-3830 (ISSN) 1437-434X (eISSN)

Vol. 71 373-381

Ämneskategorier

Polymerkemi

Fysikalisk kemi

Kemiska processer

Kemiteknik

Kemi

Organisk kemi

Drivkrafter

Hållbar utveckling

Styrkeområden

Energi

Materialvetenskap

DOI

10.1515/hf-2016-0075