Researchers from the Department of Chemistry Katarina Jerin and Davor Kovačević in collaboration with researchers from the Institute of Agrophysics, Polish Academy of Sciences, Lublin, Poland (Katarzyna Szewczuk‑Karpisz, Sylwia Kukowska and Katarzyna Grygorczuk‑Płaneta) and with a researcher from the Medical University, Lublin, Poland (Bartosz Kondracki) have published the scientific publication Scavenging of copper(II) ions, phosphate(V) ions and diuron from aqueous media by goethite modified with chitosan or poly(acrylic acid) in the prestigious journal Environmental Science and Pollution Research (IF 5,8) .
In the published paper, the adsorption properties of goethite, a widespread iron oxide mineral, coated with polyelectrolytes chitosan and poly(acrylic acid) were investigated with the aim of removing pollutants from the environment. The adsorption of copper, phosphate and diuron on the mentioned substrates was examined, as well as the stability of such systems. The Langmuir, Freundlich and Redlich–Peterson isotherms were used for the interpretation of the adsorption results. A comparison of the adsorption results on unmodified and modified goethite showed that prior adsorption of poly(acrylic acid) has a more significant effect on the adsorption capacity of goethite than coating the iron oxide surface with a layer of chitosan. Consequently, the modification of goethite with poly(acrylic acid) could be considered more promising for the removal of environmental pollutants.
The research was partially performed as a part of the Croatian-Slovenian bilateral research project Modulation of fruit polyphenolic profile by sustainable postharvest physical treatments (APPLPEMs, IPS-2020-01-6126) funded by the Croatian Science Foundation.
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