U(VI) adsorption by green and facilely modified Ficus microcarpa aerial roots: Behavior and mechanism investigation

Lulu Wang; Fa Fang; Juan Liu; Jingzi Beiyuan; Jielong Cao; Siyu Liu; Qien Ouyang; Yeliang Huang; Jin Wang; Yanyi Liu; Gang Song; Diyun Chen

doi:10.1016/j.scitotenv.2021.151166

U(VI) adsorption by green and facilely modified Ficus microcarpa aerial roots: Behavior and mechanism investigation

Sci Total Environ. 2022 Mar 1:810:151166. doi: 10.1016/j.scitotenv.2021.151166. Epub 2021 Oct 23.

Authors

Lulu Wang¹, Fa Fang¹, Juan Liu¹, Jingzi Beiyuan², Jielong Cao¹, Siyu Liu¹, Qien Ouyang¹, Yeliang Huang¹, Jin Wang³, Yanyi Liu¹, Gang Song⁴, Diyun Chen⁵

Affiliations

¹ School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China.
² School of Environment and Chemical Engineering, Foshan University, Foshan, Guangdong, China.
³ School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Guangzhou 510006, China. Electronic address: [email protected].
⁴ School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Guangzhou 510006, China. Electronic address: [email protected].
⁵ School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Guangzhou 510006, China.

PMID: 34699818
DOI: 10.1016/j.scitotenv.2021.151166

Abstract

Uranium (U)-containing wastewater poses serious pressure to human health and environmental safety. The treatment of U-bearing wastewater using green and facilely fabricated materials is considered a promising alternative. Herein, the raw and modified aerial roots of Ficus microcarpa (RARF and MARF, respectively) were prepared and applied to the treatment of synthesized U-containing wastewater. The results showed that the adsorption process was spontaneous and chemically controlled, which was in good accordance with the pseudo-second-order kinetic and the Redlich-Peterson isotherm adsorption model. The adsorption mechanisms were proposed to be the complexation between U(VI) and oxygen/phosphorus-containing functional groups on MARF.

Keywords: Adsorption; Biomass-derived adsorbent; Ficus microcarpa; Uranium.

MeSH terms

Adsorption
Ficus*
Humans
Kinetics
Phosphorus
Uranium* / analysis
Wastewater

Substances

Waste Water
Phosphorus
Uranium