Lignin-containing cellulose nanocrystals/sodium alginate beads as highly effective adsorbents for cationic organic dyes

Mingshuai Ma; Zhong Liu; Lanfeng Hui; Zhen Shang; Shaoyu Yuan; Lin Dai; Pengtao Liu; Xinliang Liu; Yonghao Ni

doi:10.1016/j.ijbiomac.2019.08.022

Lignin-containing cellulose nanocrystals/sodium alginate beads as highly effective adsorbents for cationic organic dyes

Int J Biol Macromol. 2019 Oct 15:139:640-646. doi: 10.1016/j.ijbiomac.2019.08.022. Epub 2019 Aug 2.

Authors

Mingshuai Ma¹, Zhong Liu², Lanfeng Hui³, Zhen Shang¹, Shaoyu Yuan³, Lin Dai⁴, Pengtao Liu⁵, Xinliang Liu⁶, Yonghao Ni¹

Affiliations

¹ Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China; Department of Chemical Engineering, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada.
² Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China. Electronic address: mglz@tust.edu.cn.
³ Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China.
⁴ Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China; Department of Chemical Engineering, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada. Electronic address: dailin@tust.edu.cn.
⁵ Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China; Guangxi Key Laboratory of Clean Pulp & Paper and Pollution Control, Guangxi University, Nanning 530004, China.
⁶ Guangxi Key Laboratory of Clean Pulp & Paper and Pollution Control, Guangxi University, Nanning 530004, China.

PMID: 31381920
DOI: 10.1016/j.ijbiomac.2019.08.022

Abstract

Cellulose nanocrystals (CNCs) is an exciting class of sustainable and carbohydrate material, which has great potential applications in molecular adsorption. However, the complex preparation process and limited adsorption capacity of CNCs hinder its commercial application. In this study, we design a novel functional cellulose nanocrystals-based adsorbent by an ingenious mixing of lignin-containing cellulose nanocrystals (LCNCs), sodium alginate (SA), and calcium chloride solution. Benefiting from the sulfonate groups of lignin, carboxyl groups of SA, the maximum adsorptive capability of LCNCs/SA beads for methylene blue was found to be 1181 mg g^-1, which was significantly higher than previously reported biomass-based adsorbents. More importantly, LCNCs/SA beads can be reused several times. This strategy can not only improve the adsorption performance of CNCs-based materials, but also simplify the production technology of CNCs, which greatly promote the commercial application of CNCs materials.

Keywords: Adsorption; Cellulose nanocrystals; Lignin.

MeSH terms

Adsorption
Alginates / chemistry*
Biomass
Calcium Chloride / chemistry
Cations
Cellulose / chemistry*
Coloring Agents / chemistry*
Hydrogels / chemistry
Hydrogen-Ion Concentration
Kinetics
Lignin / chemistry*
Methylene Blue / chemistry
Nanoparticles / chemistry*
Organic Chemicals / chemistry
Reproducibility of Results
Thermodynamics

Substances

Alginates
Cations
Coloring Agents
Hydrogels
Organic Chemicals
Cellulose
Lignin
Calcium Chloride
Methylene Blue