ASSESSMENT OF PHYSICOCHEMICAL COMPONENTS OF POLLUTED SOIL REMEDIATED WITH LEAF LITTER AND HYDROGEN..

At the Rivers State University Research Farm in Port Harcourt, researchers investigatedthe ability of leaf litter and hydrogen peroxide to remediate a crude oilpolluted soil. There were 14 procedures in all, including 5 replicates. The following treatments were used: T1:100 mL Crude Oil (C/O) + 100 mL Hydrogen Peroxide (H2O2), T2:100 mL C/O + 100 g Leaf Litter (l/l), T3:100 mL C/O + 100 mL Hydrogen Peroxide (H2O2) T3:200 ml C/O + 200 ml H2O2, T4:200 ml C/O + 200 g l/l, T5:300 ml C/O + 300 ml H2O2, T6:300 ml C/O + 300 g l/l, T7:400 ml C/O +400 ml H2O2, T8:400 ml C/O + 400 g l/l T11: no pollution + 500 ml H2O2, T12: no pollution + 500 g l/l, T13: 500 ml C/O + no amendment, T14: no pollution + 500 ml H2O2, T15: no pollution + 500 ml H2O2, T16: no pollution + 500 ml H2O2, T17: no pollution + 500 ml H2O2, T18: As a control, (no pollution+no amendment). Before, after, and after remediation, soil samples were analysed to determine the physicochemical properties. he study lasted for four months. After amending the soils with both H2O2 and leaf litter, the results of physicochemical parameters were reduced to appropriate levels. Phosphate content increased irregularly in all procedures, but T1, T2, T11, and T12 had the highest phosphate content (8.08.5) in the first, second, and third months after remediation, respectively, while phosphorus content decreased after four months.Total organic carbon rose in all treatments in proportion to crude oil emission levels. The highest TOC values were found in T9, T10, and T13 (51.1–53.4), while the lowest TOC values were found in unpolluted and remediated soils, as well as the control, with values ranging from 9.2 to 11.0. Crude oil had a negative impact on potassium levels, which steadily rose over time. After 4 months of remediation, there was a significant reduction in TOC content, with values in the ranges of (2223). Phosphorus content increased irregularly in all treatments until the third month after amendment, then decreased at the fourth month. This inferredthat the soil's excess phosphorus content was reduced by the remediation agents.

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