Humic acids extracted from compost as amendments for Fenton treatment of diesel-contaminated soil

Environmental Science and Pollution Research International
Daniela ZingarettiRenato Baciocchi

Abstract

In this study, we investigate the performance of a Fenton-like process carried out adding as amendments humic acids extracted from compost obtained from organic wastes. Namely, Fenton-like lab-scale tests with different dosages of the extracted humic acids and traditional stabilizing agent (KH2PO4) were performed on a diesel-contaminated soil collected in a former gasoline station. The performed tests showed a beneficial effect of the extracted humic acids on the hydrogen peroxide stability. Namely, the H2O2 lifetime in the tests carried out without the addition of any amendments proved to be quite limited, resulting equal to around 1 h. The adoption of the extracted humic acids alone entailed a limited increase of the hydrogen peroxide stability that anyhow was detected in solution for 24 h using 10 g/L of extracted HA. When the humic acids (10 g/L) were used in combination with KH2PO4 (8.2 g/L), the hydrogen peroxide lifetime increased up to around 150 h. A beneficial effect of the humic acids extracted from compost for a Fenton-like process was also observed in terms of diesel removal. Namely, without any amendment, a contaminant removal of around 55% was observed. Using KH2PO4 or HA alone, the contaminant removal raised up ...Continue Reading

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May 8, 2018·The Science of the Total Environment·Daniela ZingarettiRenato Baciocchi
Nov 7, 2019·Environmental Science and Pollution Research International·Yuehua ChangYongsheng Zhao

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Citations

Jun 7, 2021·Environmental Science and Pollution Research International·Chen QiuZhang Lin

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