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The study examined the sorption properties of beech, chestnut, and pine sawdust, as well as pine pellets, focusing on their ability to remove heavy metal ions from aqueous solutions. The kinetics of sorption were analyzed using CuSO4-5H2O and FeSO4-7H2O solutions (10?5-10?- M) over 1, 2, 4, 24, and 48 hours. Sorbents were modified with HCl and NaCl, and their efficiency was evaluated by measuring pH and electrical conductivity before and after sorption. Chestnut sawdust demonstrated the highest sorption capacity, ...

Currently, the food industry accounts for the largest amount of waste, a third of which is waste from the processing of fruits into natural fruit juices, the consumption of which has recently increased significantly due to health problems among the population. The transition to a healthier and more natural lifestyle involves reducing the consumption of soft drinks, which can contain high concentrations of sugars, artificial colors, preservatives, and increasing the production of natural juices. Studies were carrie...