Volume: 3, 2024
3rd International PhD Student’s Conference at the University of Life Sciences in Lublin, Poland:
ENVIRONMENT – PLANT – ANIMAL – PRODUCT
Abstract number: T008
DOI: https://doi.org/10.24326/ICDSUPL3.T008
Published online: 24 April 2024
ICDSUPL, 3, T008 (2024)
Modified biochar as an effective adsorbent of organic dyes
Barbara Wawrzaszek1*, Barbara Charmas1, Katarzyna Jedynak2
1 Department of Chromatography, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska 3, 20-031 Lublin, Poland
2 Institute of Chemistry, Faculty of Natural Sciences, Jan Kochanowski University, Uniwersytecka 7, 25-406 Kielce, Poland
* Corresponding author: barbara.wawrzaszek@mail.umcs.pl
Abstract
Water pollution has become one of the main environmental problems in the world. Human industrial activity contributes to this, as a result of which many toxic compounds are released into the environment, having a negative impact on the health and life of living organisms. Most water purification processes, such as reverse osmosis, advanced oxidation processes, ion exchange, or ozonation, are both complicated and expensive. Among them, adsorption is considered the most promising method due to its simplicity, efficiency, and the possibility of using various types of adsorbents. Biochar is considered an economical and environmentally friendly material that is widely used in the process of removing pollutants from the water phase. Biochar is a carbon-rich material obtained during the pyrolysis of biomass. It is characterized by surface and porosity, the presence of surface oxygen functional groups, and the ability to exchange ions. Its additional advantage is the possibility of obtaining them from waste organic materials, which helps to reduce the amount of residual waste. Many activation methods are used to develop the physicochemical parameters of biochars, but some of them require the use of additional chemical reagents. Mechanochemical treatment allows for the development of the specific surface and porosity of biochars in a simple, repeatable, and economical way, improving the physicochemical parameters of the materials, which translates into the possibility of their use in removing a wide range of contaminants from water. The work aimed to investigate the effect of mechanochemical milling on the physicochemical properties of biochars and their adsorption capacity towards organic dyes. Biochar was obtained from mixed wood sawdust and it was subjected to mechanochemical processing using various process parameters. The physicochemical properties of the obtained materials were examined. Moreover, the adsorption tests were performed to determine the total sorption capacity for the dyes: methylene blue and methyl orange. Research has shown that mechanochemical modification is a simple and effective way to improve the physicochemical parameters of biochars. The obtained materials had a well-developed surface and porosity and contained on the surface oxygen functional groups. The determined sorption capacities indicate that mechanochemically modified biochars are promising adsorbents of organic dyes that can be used in water purification processes.
Keywords: biochar, mechanochemical treatment, adsorption, dyes
How to cite
B. Wawrzaszek, B. Charmas, K. Jedynak, 2024. Modified biochar as an effective adsorbent of organic dyes. In: 3rd International PhD Student’s Conference at the University of Life Sciences in Lublin, Poland: Environment – Plant – Animal – Product. https://doi.org/10.24326/ICDSUPL3.T008