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Heat treatment is effective for removing petroleum hydrocarbons from soil. However, high heat reduces the fertility of soils. This study determined the effect of temperature, and crude oil and salt additions on the fertility of four soils. Effects were assessed immediately after thermal treatment and following an equilibration/stabilization period. Soils were heated at four controlled temperatures (65, 300, 425, and 550°C) and also in an uncontrolled smoldering device, with 0 or 50 g kg -1 oil added and with 3 levels of salt solution added (0, 1, or 3 ms cm -1 ). Soils were ‘rapidly weathered’ via wet / dry cycles at 37°C for five weeks. Initial changes in soil fertility were extreme enough to inhibit plant growth. Soil pH values were positively related to temperature, exceeding pH 8.5 at 550°C. The severity of changes was markedly reduced following incubations, showing that post heat treatment fertility will rebound with time and water.
Jake Mowrer. 2026. \u201cLong-Term Soil Fertility Changes Following Thermal Desorption to Remove Crude Oil are Favorable to Revegetation Strategies\u201d. Global Journal of Science Frontier Research - H: Environment & Environmental geology GJSFR-H Volume 22 (GJSFR Volume 22 Issue H6): .
Crossref Journal DOI 10.17406/GJSFR
Print ISSN 0975-5896
e-ISSN 2249-4626
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Total Score: 133
Country: United States
Subject: Global Journal of Science Frontier Research - H: Environment & Environmental geology
Authors: Jake Mowrer, Tony Provin, Steve Perkins (PhD/Dr. count: 0)
View Count (all-time): 172
Total Views (Real + Logic): 1437
Total Downloads (simulated): 33
Publish Date: 2026 01, Fri
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Heat treatment is effective for removing petroleum hydrocarbons from soil. However, high heat reduces the fertility of soils. This study determined the effect of temperature, and crude oil and salt additions on the fertility of four soils. Effects were assessed immediately after thermal treatment and following an equilibration/stabilization period. Soils were heated at four controlled temperatures (65, 300, 425, and 550°C) and also in an uncontrolled smoldering device, with 0 or 50 g kg -1 oil added and with 3 levels of salt solution added (0, 1, or 3 ms cm -1 ). Soils were ‘rapidly weathered’ via wet / dry cycles at 37°C for five weeks. Initial changes in soil fertility were extreme enough to inhibit plant growth. Soil pH values were positively related to temperature, exceeding pH 8.5 at 550°C. The severity of changes was markedly reduced following incubations, showing that post heat treatment fertility will rebound with time and water.
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