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Rhamnolipid biosurfactant transport in agricultural soils

Posted on:2014-08-14Degree:M.SType:Thesis
University:The Florida State UniversityCandidate:Renfro, Tyler DFull Text:PDF
GTID:2451390008458057Subject:Agriculture
Abstract/Summary:
Rhamnolipid biosurfactant is a bacterial biosurfactant produced by several Pseudomonas species, which can wet hydrophobic soils by lowering the cohesive and/or adhesive surface tension, allowing the water to spread out more evenly and better penetrate the hydrophobic soils. Because of its bio-degradability, rhamnolipid biosurfactant applications cause minimal adverse effects to the soil and groundwater as compared with that of chemical wetting agents. Rhamnolipid biosurfactant applications save water consumption during agricultural irrigation, especially under draught conditions. This research was designed to investigate the effectiveness of rhamnolipid biosurfactant applications in agricultural soils and key functioning properties. Performance of the rhamnolipid biosurfactant was explored in intact soil column experiments using agricultural soil. Investigating the impact of the rhamnolipid biosurfactant wetting agent fate and transport of organic concentration. Concluding rhamnolipid biosurfactants work effectively at low concentrations, from 12 to 6 percent and would be suitable for biosurfactant production and use.
Keywords/Search Tags:Biosurfactant, Agricultural soils, Hydrophobic soils
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