Abstract
The effect of Na2CO3 on the cloud point in Na2CO3/surfactant/brine was investigated using two series of nonionic surfactants, C13EOx and C17EOx. The cloud point, Tcp, was found to decrease linearly with increasing Na2CO3 concentration. This was attributed to Na+ and particularly to CO3 2−salting-out effect. The slope a = dTcp/d[Na2CO3] became more and more negative as the degree of ethoxylation is increased, suggesting that the higher the number of ethylene oxide (EO) groups the stronger is the cloud point depression for a given increment in Na+and CO3 2−ions in solution. This was also illustrated by the linear variation of ΔTcp = Tcp,0 − Tcp,[Na2CO3] with the surfactant degree of ethoxylation.
| Original language | English |
|---|---|
| Pages (from-to) | 1223-1229 |
| Number of pages | 7 |
| Journal | Journal of Surfactants and Detergents |
| Volume | 19 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Nov 1 2016 |
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Keywords
- Cloud point
- Enhanced oil recovery
- Nonionic surfactant
- Salting-out effect
- Soap
ASJC Scopus subject areas
- Chemical Engineering(all)
- Surfaces, Coatings and Films
- Physical and Theoretical Chemistry
Cite this
Effect of Sodium Carbonate on the Cloud Point in Alkyl Ether/Brine Systems : Apparent Relation with Dynamic Interfacial Tension Minimum. / Hadji, Moundher; Aoudia, Mohamed; Al-Rubkhi, Adil; Al-Maamari, Rashid S.; Hadj-Ziane-Zafour, Amel.
In: Journal of Surfactants and Detergents, Vol. 19, No. 6, 01.11.2016, p. 1223-1229.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of Sodium Carbonate on the Cloud Point in Alkyl Ether/Brine Systems
T2 - Apparent Relation with Dynamic Interfacial Tension Minimum
AU - Hadji, Moundher
AU - Aoudia, Mohamed
AU - Al-Rubkhi, Adil
AU - Al-Maamari, Rashid S.
AU - Hadj-Ziane-Zafour, Amel
PY - 2016/11/1
Y1 - 2016/11/1
N2 - The effect of Na2CO3 on the cloud point in Na2CO3/surfactant/brine was investigated using two series of nonionic surfactants, C13EOx and C17EOx. The cloud point, Tcp, was found to decrease linearly with increasing Na2CO3 concentration. This was attributed to Na+ and particularly to CO3 2−salting-out effect. The slope a = dTcp/d[Na2CO3] became more and more negative as the degree of ethoxylation is increased, suggesting that the higher the number of ethylene oxide (EO) groups the stronger is the cloud point depression for a given increment in Na+and CO3 2−ions in solution. This was also illustrated by the linear variation of ΔTcp = Tcp,0 − Tcp,[Na2CO3] with the surfactant degree of ethoxylation.
AB - The effect of Na2CO3 on the cloud point in Na2CO3/surfactant/brine was investigated using two series of nonionic surfactants, C13EOx and C17EOx. The cloud point, Tcp, was found to decrease linearly with increasing Na2CO3 concentration. This was attributed to Na+ and particularly to CO3 2−salting-out effect. The slope a = dTcp/d[Na2CO3] became more and more negative as the degree of ethoxylation is increased, suggesting that the higher the number of ethylene oxide (EO) groups the stronger is the cloud point depression for a given increment in Na+and CO3 2−ions in solution. This was also illustrated by the linear variation of ΔTcp = Tcp,0 − Tcp,[Na2CO3] with the surfactant degree of ethoxylation.
KW - Cloud point
KW - Enhanced oil recovery
KW - Nonionic surfactant
KW - Salting-out effect
KW - Soap
UR - http://www.scopus.com/inward/record.url?scp=84986325492&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84986325492&partnerID=8YFLogxK
U2 - 10.1007/s11743-016-1870-3
DO - 10.1007/s11743-016-1870-3
M3 - Article
AN - SCOPUS:84986325492
VL - 19
SP - 1223
EP - 1229
JO - Journal of Surfactants and Detergents
JF - Journal of Surfactants and Detergents
SN - 1097-3958
IS - 6
ER -