Calcium lignosulfonate adsorption and desorption on Berea sandstone

被引:42
作者
Grigg, RB [1 ]
Bai, BJ [1 ]
机构
[1] New Mexico Inst Min & Technol, New Mexico Petr Recovery Res Ctr, Socorro, NM 87801 USA
关键词
calcium lignosulfonate; Berea sandstone; adsorption; desorption; effects of concentration and temperature on sorption;
D O I
10.1016/j.jcis.2004.06.035
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
This paper describes adsorption and desorption studies carried out with calcium lignosulfonate (CLS) on Berea sandstone. Circulation experiments were performed to determine CLS adsorption isotherms and the effects of CLS concentration, temperature, salinity, brine hardness, and injection rate on adsorption density. Flow-through experiments were performed to assess the reversibility of CLS adsorption and the influence of postflush rate, brine concentration, brine hardness, brine pH, and temperature on the desorption process. Results indicate that CLS adsorption isotherms on Berea sandstone follow the Freundlich isotherm law. The results presented in this paper on the effects of CLS adsorption and desorption on Berea sandstone show that: (1) increasing CLS concentration and salinity increases CLS adsorption density; (2) increasing temperature will decrease adsorption density; (3) increasing injection rate of CLS solution will slightly decrease CLS adsorption density; (4) postflush rate and salinity of brine have a large impact on the CLS desorption process; (5) the adsorption and desorption process are not completely reversible; and (5) temperature and pH of the postflush brine have little effect on desorption. (C) 2004 Elsevier Inc. All rights reserved.
引用
收藏
页码:36 / 45
页数:10
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