AI Article Synopsis
- This study explored how different concentrations of hydrogen peroxide (HO) affect the efficiency of a Fenton-like system using biochar for removing diethyl phthalate (DEP).
- The research focused on the physical structure of biochar and the role of environmental persistent free radicals (EPFRs) formed during the DEP removal process.
- Results showed a strong positive correlation between EPFR concentrations in biochar and the rates of DEP removal, with the highest removal efficiency achieved at a HO concentration of 5 mM.
Article Abstract
To investigate the impact of different HO concentrations on the Fenton-like systems of HO/biochar, this study examined the mechanism of the physical structure and environmental persistent free radicals (EPFRs) of biochar during diethyl phthalate (DEP) removal by the Fenton-like system. The peak-splitting method was utilized to differentiate EPFRs types in cotton stalk biochar produced at different temperatures. High-temperature environments promote π-electron delocalization, which facilitates phenyl π free radicals and σ-π oxygen-containing free radicals. By analyzing relationships between the removal rate K and removal constant K of DEP with the structural properties of biochar, it was discovered that EPFRs concentrations in biochar had a significant positive correlation with K (r = 0.92) and K (r = 0.97). Different HO concentrations added to the biochar removal system resulted in varied DEP removal efficiency. Among them, CS, CS, and CS exhibited superior DEP removal efficiency when HO concentration was 5 mM.
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| http://dx.doi.org/10.1016/j.envpol.2024.124499 | DOI Listing |
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