Comparison of the effectiveness of removing PAHs from the aquatic environment with the use of biochars
DOI:
https://doi.org/10.36119/15.2023.10.7Keywords:
adsorption, biochar, sewage sludge, chicken manure, polycyclic aromatic hydrocarbons, waterAbstract
The aim of the study was to compare the effectiveness of removing PAHs from the aquatic environment as a result of adsorption on biochars obtained from chicken manure and municipal sewage sludge. The sorption process was carried out for doses of biochars of 50 and 100 mg/L. For each dose of biochar, the contact time with PAHs was 90 and 120 minutes. The best results were obtained for a biochar dose of 100 mg/L and a contact time of 120 minutes. For biochar from chicken manure and sewage sludge, the concentration of benzo(a)pyrene decreased by 87.2 and 78.7%, respectively, while for four PAHs standardized in drinking water, the total concentration decreased by 83.5 and 80.2%, respectively. For the remaining PAHs, higher sorption was observed for dibenzo(a,h)anthracene, the concentration of this compound decreased by 83.2%. The smallest changes were shown for naphthalene, the concentration of which decreased by 68.5%. There were no statistically significant differences between sorption on biochar from chicken manure and sewage sludge.
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References
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