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Sustainability 2017, 9(1), 62; doi:10.3390/su9010062

Characterization of Polyethylene Oxide and Sodium Alginate for Oil Contaminated-Sand Remediation

Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA 70803, USA
Department of Civil and Environmental Engineering, Incheon National University, Incheon 22012, Korea
Incheon Disaster Prevention Research Centre, Incheon National University, Incheon 22012, Korea
Author to whom correspondence should be addressed.
Academic Editor: Marc Rosen
Received: 27 September 2016 / Revised: 21 December 2016 / Accepted: 27 December 2016 / Published: 4 January 2017
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Biopolymers have been employed in many soil applications, such as oil-contaminated soil remediation, due to their environmentally friendly characteristics. This study focused on changes in the wettability and viscosity of polyethylene oxide (PEO) and sodium alginate (SA), according to the variation in concentration and their impact on oil-contaminated soil remediation using biopolymer-decane displacement tests. The contact angle and interfacial tension vary with concentration by adding biopolymer to water; however both parameters yield relatively constant values within the range of 2–10 g/L for the concentration of PEO and SA. In this study, their influence on fluid invasion patterns is insignificant compared to viscosity and flow rate. Viscosity increases with the concentration of PEO and SA, within the range of 0–10 g/L, which causes the biopolymer-decane displacement ratio to increase with concentration. Biopolymer-decane displacement increases with injected fluid velocity. At low flow rates, the effect of the biopolymer concentration on the displacement ratio is prominent. However the effect decreases with an increase in flow rate. Thus both biopolymer concentration and injection velocity should be considered to achieve the economic efficiency of soil remediation. The experimental results for the distribution of soils with different grain sizes indicate that the displacement ratio increases with the uniformity of the coefficient of soils. View Full-Text
Keywords: remediation; polyethylene oxide; alginic acid sodium salt remediation; polyethylene oxide; alginic acid sodium salt

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Jung, J.; Hu, J.W. Characterization of Polyethylene Oxide and Sodium Alginate for Oil Contaminated-Sand Remediation. Sustainability 2017, 9, 62.

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