Simultaneous sorption behaviors of UV filters on the virgin and aged micro-high-density polyethylene under environmental conditions

Justyna Kapelewska; Urszula Klekotka; Ewa Żadziłko; Joanna Karpińska

doi:10.1016/j.scitotenv.2021.147979

Simultaneous sorption behaviors of UV filters on the virgin and aged micro-high-density polyethylene under environmental conditions

Sci Total Environ. 2021 Oct 1:789:147979. doi: 10.1016/j.scitotenv.2021.147979. Epub 2021 May 24.

Authors

Justyna Kapelewska¹, Urszula Klekotka², Ewa Żadziłko³, Joanna Karpińska³

Affiliations

¹ Department of Analytical and Inorganic Chemistry, Faculty of Chemistry, University of Bialystok, Ciolkowskiego 1K Street, 15-245 Bialystok, Poland. Electronic address: j.kapelewska@uwb.edu.pl.
² Department of Physical Chemistry, Faculty of Chemistry, University of Bialystok, Ciolkowskiego 1K Street, 15-245 Bialystok, Poland.
³ Department of Analytical and Inorganic Chemistry, Faculty of Chemistry, University of Bialystok, Ciolkowskiego 1K Street, 15-245 Bialystok, Poland.

PMID: 34082205
DOI: 10.1016/j.scitotenv.2021.147979

Abstract

The simultaneous sorption behaviors of four analytes from the UV filters group, benzophenone (BPh), 4-methylbenzylidene camphor (4MBC), benzophenone 3 (BPh3), and benzophenone 2 (BPh2) on virgin and aged high-density polyethylene (HDPE) with a particle size of 125 μm in milliQ and river water were examined in this study. The aging processes of HDPE particles were carried out with the use of simulated sunlight. Conducted research revealed that the sorption of UV filters on HDPE particles follows pseudo-second-order kinetics. A Temkin isothermal model best described the adsorption process for 4BMC, BPh, BPh3, BPh2 on aged HDPE in river water, and 4MBC, BPh, BPh3 on virgin HDPE in milliQ water. The adsorption of BPh2 onto virgin MPs in milliQ water was consistent with the Langmuir isothermal model. Environmental conditions and physicochemical properties of analytes influenced the sorption mechanism between UV filters and MPs particles. It was observed that the main mechanisms responsible for the sorption of BPh, 4MBC, BPh3, and BPh2 on the surface of HDPE are hydrophobic interactions, that may change through the involvement of electrostatic interactions.

Keywords: Aged; Emerging contaminants; Kinetic; Micro-HDPE; Microplastics; Sorption; UV filters.

MeSH terms

Adsorption
Hydrophobic and Hydrophilic Interactions
Plastics
Polyethylene*
Water Pollutants, Chemical* / analysis

Substances

Plastics
Water Pollutants, Chemical
Polyethylene