Influence of PZC (Point of Zero Charge) on the Static Adsorption of Anionic Surfactants on a Malaysian Sandstone

被引:30
|
作者
Mushtaq, Muhammad [1 ]
Tan, Isa M. [1 ]
Ismail, Lukman [1 ]
Nadeem, Muhammad [2 ]
Sagir, Muhammad [1 ]
Azam, Rizwan [1 ]
Hashmet, Rehan [3 ]
机构
[1] Univ Teknol PETRONAS, Dept Chem Engn, Tronoh, Malaysia
[2] PETRONAS Res Sdn Bhd, Subsurface Technol, Kajang, Selangor, Malaysia
[3] Univ Teknol PETRONAS, Dept Petr Engn, Tronoh, Malaysia
关键词
surfactants; EOR; point of zero charge; adsorption isotherm; Adsorption;
D O I
10.1080/01932691.2013.785362
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Static adsorption studies of two anionic surfactants produced in our lab are reported. The adsorption of surfactants on the rock samples was investigated with and without the presence of alkali. The point of zero charge (PZC) values were determined for the sandstone samples employing three titrimetric methods and it was found to be at pH 7.98. The relationship between the adsorption degree and pH value of brine below and above the PZC is discussed. It was found that at the pH of solution exceeds the PZC of the rock, the adsorption was 0.43 and 0.86mg/g of rock for the two surfactants. However, at pH values below PZC, the adsorption as high as 3.66 and 4.49mg/g for the two surfactants. The synthesized surfactants are found to be suitable for the EOR applications at pH values higher than the PZC of the rock sample.
引用
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页码:343 / 349
页数:7
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