Adsorption activity of chemically modified waste from food industry
2024
Koronkiewicz, Kamila | Kalinowska, Monika
Due to the increase in industrialization, the contamination of water and wastewater with heavy metal ions is still growing. Conventional metal ion removal technologies are inefficient and commercially available sorbents are increasingly expensive. As literature data indicates, raw natural sorbents, i.e. fruit pomace have excellent adsorption capacity, biodegradability and non-toxicity in comparison with synthetic sorbents and is also cheaper. There is a great chance of efficient use of apple pomace, which is produced on a large scale all over the world (it has been estimated that the global production of apple pomace was about 5 million in 2023), for designing new biosorbents for heavy and toxic metals removal from water and wastewater. The storage of waste from the agrofood industry carries the risk of mainly microbiological contamination. At the same time, due to the increase in industrialization, the contamination of water and wastewater with heavy metals is growing. Therefore, both problems, which are generally associated with the increase in civilization and human population growth in the world, are a great challenge for modern science. Within the framework of the present study, sorption studies of apple pomace, raw and modified by joint synthesis of hydroxyapatite on its surface were performed. The sorption studies included the effects of contact time, weighting, pH and copper(II) ion concentration. The results confirmed an effective increase in adsorption capacity of the adsorbent due to their chemical modification.
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