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Sustainability 2016, 8(3), 205; doi:10.3390/su8030205

Engineering Behavior and Characteristics of Water-Soluble Polymers: Implication on Soil Remediation and Enhanced Oil Recovery

1,†
,
2,†
,
3,4,†
and
5,*
1
Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA 70803, USA
2
Department of Civil, Architectural and Environmental Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USA
3
Department of Civil and Environmental Engineering, Incheon National University, Incheon 22012, Korea
4
Incheon Disaster Prevention Research Center, Incheon National University, Incheon 22012, Korea
5
Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA 70803, USA
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Muge Mukaddes Darwish
Received: 5 October 2015 / Revised: 5 February 2016 / Accepted: 19 February 2016 / Published: 25 February 2016
View Full-Text   |   Download PDF [4678 KB, uploaded 25 February 2016]   |  

Abstract

Biopolymers have shown a great effect in enhanced oil recovery because of the improvement of water-flood performance by mobility control, as well as having been considered for oil contaminated-soil remediation thanks to their mobility control and water-flood performance. This study focused on the wettability analysis of biopolymers such as chitosan (85% deacetylated power), PEO (polyethylene oxide), Xanthan (xanthan gum), SA (Alginic Acid Sodium Salt), and PAA (polyacrylic acid), including the measurements of contact angles, interfacial tension, and viscosity. Furthermore, a micromodel study was conducted to explore pore-scale displacement phenomena during biopolymer injection into the pores. The contact angles of biopolymer solutions are higher on silica surfaces submerged in decane than at atmospheric conditions. While interfacial tensions of the biopolymer solutions have a relatively small range of 25 to 39 mN/m, the viscosities of biopolymer solutions have a wide range, 0.002 to 0.4 Pa·s, that dramatically affect both the capillary number and viscosity number. Both contact angles and interfacial tension have effects on the capillary entry pressure that increases along with an applied effective stress by overburden pressure in sediments. Additionally, a high injection rate of biopolymer solutions into the pores illustrates a high level of displacement ratio. Thus, oil-contaminated soil remediation and enhanced oil recovery should be operated in cost-efficient ways considering the injection rates and capillary entry pressure. View Full-Text
Keywords: biopolymer; enhanced oil recovery; contact angle; interfacial tension; micromodel; capillary pressure biopolymer; enhanced oil recovery; contact angle; interfacial tension; micromodel; capillary pressure
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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MDPI and ACS Style

Cao, S.C.; Bate, B.; Hu, J.W.; Jung, J. Engineering Behavior and Characteristics of Water-Soluble Polymers: Implication on Soil Remediation and Enhanced Oil Recovery. Sustainability 2016, 8, 205.

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