Arsenite (III) removal via manganese-decoration on cellulose nanocrystal -grafted polyethyleneimine nanocomposite

Tingting Luo; Runkai Wang; Fei Chai; Lei Jiang; Pinhua Rao; Lili Yan; Xinjian Hu; Wei Zhang; Lianghuan Wei; Alireza Khataee; Ning Han

doi:10.1016/j.chemosphere.2022.134925

Arsenite (III) removal via manganese-decoration on cellulose nanocrystal -grafted polyethyleneimine nanocomposite

Chemosphere. 2022 Sep;303(Pt 1):134925. doi: 10.1016/j.chemosphere.2022.134925. Epub 2022 May 10.

Authors

Tingting Luo¹, Runkai Wang², Fei Chai³, Lei Jiang¹, Pinhua Rao¹, Lili Yan¹, Xinjian Hu¹, Wei Zhang⁴, Lianghuan Wei⁵, Alireza Khataee⁶, Ning Han⁷

Affiliations

¹ School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China.
² School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China. Electronic address: wrk007@163.com.
³ School of Metallurgy and Environment, Central South University, Changsha, 410083, China.
⁴ Department of Materials Engineering, KU Leuven, Leuven, 3001, Belgium.
⁵ College of Chemistry and Environmental Science, Kashi University, Kashi, 844000, China.
⁶ Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran; Department of Environmental Engineering, Faculty of Engineering, Gebze Technical University, 41400, Gebze, Turkey; Department of Material Science and Physical Chemistry of Materials, South Ural State University, 454080 Chelyabinsk, Russian Federation.
⁷ Department of Materials Engineering, KU Leuven, Leuven, 3001, Belgium. Electronic address: ning.han@kuleuven.be.

PMID: 35561766
DOI: 10.1016/j.chemosphere.2022.134925

Abstract

The manganese is successfully induced as a "bridge joint" to fabricate a new adsorbent (CNC-Mn-PEI) connecting cellulose nanocrystal (CNC) and polyethyleneimine (PEI) respectively. It was used to remove As (III) from waste water. It has been proved that the incompact CNC and PEI were successfully connected by Mn ions, which induced the formation of O-Mn-O bonds and the removal efficiency is maintained in the broad pH range of 4-8, even with the influence of NO₃^- and CO₃^2-. The CNC-Mn-PEI was characterized by Brunauer-Emmett-Telley (BET) method and the results showed that the nanoparticle of the specific surface area was 106.5753 m²/g, it has a significant improvement, compared with CNC-Mn-DW (0.1918 m²/g). The isotherm and kinetic parameters of arsenic removal on CNC-Mn-PEI were well-fitted by the Langmuir and pseudo-second-order models. The maximum adsorption capacities toward As (III) was 78.02 mg/g. After seven regeneration cycles, the removal of As (III) by the adsorbent decreased from 80.78% to 68.2%. Additionally, the hypothetical adsorption mechanism of "bridge joint" effect was established by FTIR and XPS, which provided the three activated sites from CNC-Mn-PEI can improve the arsenic removal efficiency, and providing a new stratagem for the arsenic pollution treatment.

Keywords: Arsenic removal; Cellulose nanocrystal; Manganese; PEI.

MeSH terms

Adsorption
Arsenic* / chemistry
Arsenites* / chemistry
Cellulose / chemistry
Hydrogen-Ion Concentration
Ions
Kinetics
Manganese / chemistry
Nanocomposites*
Nanoparticles* / chemistry
Polyethyleneimine / chemistry
Water Pollutants, Chemical* / analysis

Substances

Arsenites
Ions
Water Pollutants, Chemical
Manganese
Polyethyleneimine
Cellulose
Arsenic