Effect of pH on the static adsorption of foaming surfactants on Malaysian sandstone

Adsorption of surfactants on the reservoir rock is one the most important factors which decide the economic feasibility of recovery process. This study reports the adsorption of two in-house developed CO2-philic foaming surfactants on Malaysian sandstone. The point of zero charge (PZC) of the rock s...

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Main Authors: Mushtaq, M., Tan, I.M., Rashid, U., Sagir, M., Mumtaz, M.
Format: Article
Published: Springer Verlag 2015
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84942550558&doi=10.1007%2fs12517-014-1765-4&partnerID=40&md5=fe06163f708227468e4bbde929e0d31a
http://eprints.utp.edu.my/31657/
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spelling my.utp.eprints.316572022-03-26T03:24:57Z Effect of pH on the static adsorption of foaming surfactants on Malaysian sandstone Mushtaq, M. Tan, I.M. Rashid, U. Sagir, M. Mumtaz, M. Adsorption of surfactants on the reservoir rock is one the most important factors which decide the economic feasibility of recovery process. This study reports the adsorption of two in-house developed CO2-philic foaming surfactants on Malaysian sandstone. The point of zero charge (PZC) of the rock sample was determined to be 8.13. The surfactants contained single tail (FS-1) and two tails (FS-2) in their structures. Static adsorption tests were conducted as traditional bottle test as well as during the foam test experiments. For the bottle tests, it was noted that the FS-2 underwent more adsorption (4.94 mg/g) when compared to FS-1 (4.32 mg/g). The pH effect was significant, and at low pH value (pH 6), the adsorption was almost five times more for both surfactants when compared to the adsorption at high pH (pH 10) conditions. During the foam test at pH 6, the adsorption results for FS-1 and FS-2 were 4.02 and 4.48 mg/g, respectively. The effect of increasing the pH to 10 was comparable to bottle test results, and adsorption was decreased about five times. The bottle test gave slightly high adsorption values primarily because the contact time was longer (24 h) when compared to foaming test adsorption values where time is only about 30 minutes. In foaming tests, sparging of CO2 gas enhanced the shear mixing of contents thereby increasing the adsorption degree resulting in the similar adsorption values despite of less contact time. The study revealed that the adsorption of surfactant depends on many parameters, and one way of effective control is to adjust the pH of the fluid higher than the PZC of the rock. © 2015, Saudi Society for Geosciences. Springer Verlag 2015 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-84942550558&doi=10.1007%2fs12517-014-1765-4&partnerID=40&md5=fe06163f708227468e4bbde929e0d31a Mushtaq, M. and Tan, I.M. and Rashid, U. and Sagir, M. and Mumtaz, M. (2015) Effect of pH on the static adsorption of foaming surfactants on Malaysian sandstone. Arabian Journal of Geosciences, 8 (10). pp. 8539-8548. http://eprints.utp.edu.my/31657/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description Adsorption of surfactants on the reservoir rock is one the most important factors which decide the economic feasibility of recovery process. This study reports the adsorption of two in-house developed CO2-philic foaming surfactants on Malaysian sandstone. The point of zero charge (PZC) of the rock sample was determined to be 8.13. The surfactants contained single tail (FS-1) and two tails (FS-2) in their structures. Static adsorption tests were conducted as traditional bottle test as well as during the foam test experiments. For the bottle tests, it was noted that the FS-2 underwent more adsorption (4.94 mg/g) when compared to FS-1 (4.32 mg/g). The pH effect was significant, and at low pH value (pH 6), the adsorption was almost five times more for both surfactants when compared to the adsorption at high pH (pH 10) conditions. During the foam test at pH 6, the adsorption results for FS-1 and FS-2 were 4.02 and 4.48 mg/g, respectively. The effect of increasing the pH to 10 was comparable to bottle test results, and adsorption was decreased about five times. The bottle test gave slightly high adsorption values primarily because the contact time was longer (24 h) when compared to foaming test adsorption values where time is only about 30 minutes. In foaming tests, sparging of CO2 gas enhanced the shear mixing of contents thereby increasing the adsorption degree resulting in the similar adsorption values despite of less contact time. The study revealed that the adsorption of surfactant depends on many parameters, and one way of effective control is to adjust the pH of the fluid higher than the PZC of the rock. © 2015, Saudi Society for Geosciences.
format Article
author Mushtaq, M.
Tan, I.M.
Rashid, U.
Sagir, M.
Mumtaz, M.
spellingShingle Mushtaq, M.
Tan, I.M.
Rashid, U.
Sagir, M.
Mumtaz, M.
Effect of pH on the static adsorption of foaming surfactants on Malaysian sandstone
author_facet Mushtaq, M.
Tan, I.M.
Rashid, U.
Sagir, M.
Mumtaz, M.
author_sort Mushtaq, M.
title Effect of pH on the static adsorption of foaming surfactants on Malaysian sandstone
title_short Effect of pH on the static adsorption of foaming surfactants on Malaysian sandstone
title_full Effect of pH on the static adsorption of foaming surfactants on Malaysian sandstone
title_fullStr Effect of pH on the static adsorption of foaming surfactants on Malaysian sandstone
title_full_unstemmed Effect of pH on the static adsorption of foaming surfactants on Malaysian sandstone
title_sort effect of ph on the static adsorption of foaming surfactants on malaysian sandstone
publisher Springer Verlag
publishDate 2015
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-84942550558&doi=10.1007%2fs12517-014-1765-4&partnerID=40&md5=fe06163f708227468e4bbde929e0d31a
http://eprints.utp.edu.my/31657/
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score 13.211869