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首页> 外文期刊>Ecological engineering: The Journal of Ecotechnology >Potential application of a biosurfactant in phytoremediation technology for treatment of gasoline-contaminated soil
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Potential application of a biosurfactant in phytoremediation technology for treatment of gasoline-contaminated soil

机译：生物表面活性剂在植物修复技术中处理汽油污染土壤的潜在应用

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摘要

Biosurfactants are amphiphilic compounds excreted extracellularly that contain hydrophobic and hydrophilic moieties, allowing them to accumulate between the fluid phases on an organism and thus reduce the surface and interfacial tension. The objectives of this study were to evaluate the potential application of a biosurfactant to the phytoremediation of gasoline-contaminated soil and compare it to other additives such as hydrocarbon degrading bacteria, sodium dodecyl sulphate (SDS) and bacterial culture supernatant. The results showed that the biosurfactant removed a significant amount (up to 93.5%) of the total petroleum hydrocarbons (TPH) compared with the other additives that removed only 85.4% (bacteria), 70.3% (culture supernatant) and 86.3% (SDS). Kinetic analysis showed that the phytoremediation of gasoline-contaminated soils by the biosurfactant fitted pseudo-second-order kinetics with a coefficient of determination (R-2) of 0.9318 and a second-order rate constant (k(2)) of 0.0032 (g TPH/kg plant d). Thus, biosurfactants have strong potential as supporting biocatalysts to increase the performance of phytoremediation technology for soil treatment. (C) 2015 Elsevier B.V. All rights reserved.
机译：生物表面活性剂是两性化合物，它们通过细胞外排泄，其中含有疏水和亲水部分，从而使它们能够在生物体的液相之间积聚，从而降低表面和界面张力。这项研究的目的是评估生物表面活性剂在汽油污染土壤的植物修复中的潜在应用，并将其与其他添加剂（如烃降解细菌，十二烷基硫酸钠（SDS）和细菌培养上清液）进行比较。结果表明，与其他仅去除85.4％（细菌），70.3％（培养上清液）和86.3％（SDS）的添加剂相比，生物表面活性剂去除了大量的石油烃（TPH）（高达93.5％）。 。动力学分析表明，生物表面活性剂对拟南芥汽油污染土壤的植物修复具有拟二级动力学特性，测定系数（R-2）为0.9318，二级速率常数（k（2））为0.0032（g）。 TPH / kg植物d）。因此，生物表面活性剂作为支持生物催化剂具有强大的潜力，可以提高植物修复技术在土壤处理中的性能。 （C）2015 Elsevier B.V.保留所有权利。

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