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Rhamnolipid Foam Enhanced Remediation of Cadmium and Nickel Contaminated Soil

Wang, Suiling ; Mulligan, Catherine

Water, Air, and Soil Pollution, 2004, Vol.157(1), pp.315-330 [Tạp chí có phản biện]

ISSN: 0049-6979 ; E-ISSN: 1573-2932 ; DOI: 10.1023/B:WATE.0000038904.91977.f0

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  • Nhan đề:
    Rhamnolipid Foam Enhanced Remediation of Cadmium and Nickel Contaminated Soil
  • Tác giả: Wang, Suiling ; Mulligan, Catherine
  • Chủ đề: biosurfactant ; cadmium ; foam ; nickel ; remediation ; rhamnolipid ; soil ; surfactant ; Triton X100
  • Là 1 phần của: Water, Air, and Soil Pollution, 2004, Vol.157(1), pp.315-330
  • Mô tả: Column experiments were conducted to evaluate the feasibility of using a rhamnolipid foam to remove heavy metals (Cd and Ni) from a sandy soil contaminated with Cd (1706 ppm) and Ni (2010 ppm). Best results were obtained from the foam generated by a 0.5% rhamnolipid solution with an initial pH value of 10.0 after flushing with 20-pore-volume of solution. These conditions removed 73.2% of the Cd and 68.1% of the Ni. Removal efficiencies by foam generated by a chemical surfactant, Triton X-100, were investigated as a comparison. It removed 65.5% of the Cd and 57.3% of the Ni under the same conditions. After a 20-pore-volume liquid solution flushing, 0.5% rhamnolipid (initial pH 10.0) without foam generation removed 61.7% of the Cd and 51.0% of the Ni, whereas 0.5% Triton X-100 (initial pH 10.0) removed 52.8% of the Cd and 45.2% of the Ni. Distilled water with adjusted pH only was also used to flush through the contaminated soil column as a control. It removed 17.8% of the Cd and 18.7% of the Ni. This study shows that rhamnolipid foam technology can be an effective means for the remediation of cadmium and nickel contaminated soil.
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0049-6979 ; E-ISSN: 1573-2932 ; DOI: 10.1023/B:WATE.0000038904.91977.f0
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     ©2016 Library and Information Center, Vietnam National University, Hanoi. All Right Reserved.
     ©2016 Library and Information Center, Vietnam National University, Hanoi. All Right Reserved.
  Nhà C1T, Đại học Quốc gia Hà Nội
144 Xuân Thủy, Cầu Giấy, Hà Nội
  (024) 3754 6545    lic@vnu.edu.vn

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