Title

Calcium Lignosulfonate Adsorption and Desorption on Berea Sandstone

Abstract

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.

Department(s)

Geosciences and Geological and Petroleum Engineering

Keywords and Phrases

Adsorption; Berea Sandstone; Calcium Lignosulfonate; Desorption; Effects Of Concentration And Temperature On Sorption; Adsorption Isotherms; PH; Temperature; Brine Hardness; Injection Rates; Salinity

International Standard Serial Number (ISSN)

219797

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2004 Academic Press Inc., All rights reserved.

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