Simple and Eco-Friendly Route from Agro-Food Waste to Water Pollutants Removal

Overview

Journal Materials (Basel)

Publisher MDPI

Date 2020 Dec 2

PMID 33260595

Authors

Alena Opalkova Siskova

Tomas Dvorak

Timea Simonova Baranyaiova

Erik Simon

Anita Eckstein Andicsova

Helena Svajdlenkova

Andrej Opalek

Peter Krizik

Martin Nosko

Affiliations

Soon will be listed here.

Abstract

The current study reflects the demand to mitigate the environmental issues caused by the waste from the agriculture and food industry. The crops that do not meet the supply chain requirements and waste from their processing are overfilling landfills. The mentioned wastes contain cellulose, which is the most abundant carbon precursor. Therefore, one of the possibilities of returning such waste into the life cycle could be preparing the activated carbon through an eco-friendly and simple route. Herein, the carrot pulp from the waste was used. Techniques such as thermogravimetric analysis (TGA), elemental analysis (EA), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, and x-ray diffraction (XRD) were used to investigate the thermal treatment effect during the carbon material preparation. The development of microstructure, phase formation, and chemical composition of prepared material was evaluated. The obtained carbon material was finally tested for water cleaning from a synthetic pollutant such as rhodamine B and phloxine B. An adsorption mechanism was proposed on the base of positron annihilation lifetime spectroscopy (PALS) results and attributed to the responsible interactions. It was shown that a significant carbon sorbent from the organic waste for water purification was obtained.

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