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An experimental investigation on the impact of brine composition on silica solubility at high temperature

The theory of silica-water system or silica solubility is quite complex as it involves dissolution, polymerization and precipitation processes to form the silicate scale. The type and amount of silicate scale observed is dependent on several factors including pH, salinity, magnesium concentration, a...

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Main Authors: Ahmed, F.A., Elraies, A.K., Ayoub, A.M., Gaafar, R.G.
Format: Article
Published: North Atlantic University Union 2016
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85000578163&partnerID=40&md5=4a0c3ccfd3cd34ffd81dbee53e7bd358
http://eprints.utp.edu.my/25415/
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spelling my.utp.eprints.254152021-08-27T13:00:51Z An experimental investigation on the impact of brine composition on silica solubility at high temperature Ahmed, F.A. Elraies, A.K. Ayoub, A.M. Gaafar, R.G. The theory of silica-water system or silica solubility is quite complex as it involves dissolution, polymerization and precipitation processes to form the silicate scale. The type and amount of silicate scale observed is dependent on several factors including pH, salinity, magnesium concentration, and the ratio of calcium to magnesium. This paper describes the impact of some factors including brine salinity and composition on silica solubility using crash quartz sandstone core samples. Synthetic brine with different salinities ranged between 20,000ppm to 60,000ppm were utilized to determine the change in soluble silica at 80°C. The amount of silica dissolved from the sandstone sample was measured using Silicomolybdate method and validated using Energy Dispersive X-RAY and X-RAY Diffraction techniques. The results clearly showed that the composition of the brine has a significant effect on the silica solubility. The amount of silica dissolution increased from 41.0mg/L to 67.8mg/L when the brine salinity increased from 20,000ppm to 60,000ppm, due to the increasing in salt contents of the brine. It was also observed that the addition of magnesium and calcium with ratio 1:1 to the brine would greatly affect the silica solubility. This has been confirmed by analyzing the samples before and after saturation by the use of Energy Dispersive X-RAY. © 2016, North Atlantic University Union. All rights reserved. North Atlantic University Union 2016 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85000578163&partnerID=40&md5=4a0c3ccfd3cd34ffd81dbee53e7bd358 Ahmed, F.A. and Elraies, A.K. and Ayoub, A.M. and Gaafar, R.G. (2016) An experimental investigation on the impact of brine composition on silica solubility at high temperature. International Journal of Mechanics, 10 . pp. 23-26. http://eprints.utp.edu.my/25415/
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 The theory of silica-water system or silica solubility is quite complex as it involves dissolution, polymerization and precipitation processes to form the silicate scale. The type and amount of silicate scale observed is dependent on several factors including pH, salinity, magnesium concentration, and the ratio of calcium to magnesium. This paper describes the impact of some factors including brine salinity and composition on silica solubility using crash quartz sandstone core samples. Synthetic brine with different salinities ranged between 20,000ppm to 60,000ppm were utilized to determine the change in soluble silica at 80°C. The amount of silica dissolved from the sandstone sample was measured using Silicomolybdate method and validated using Energy Dispersive X-RAY and X-RAY Diffraction techniques. The results clearly showed that the composition of the brine has a significant effect on the silica solubility. The amount of silica dissolution increased from 41.0mg/L to 67.8mg/L when the brine salinity increased from 20,000ppm to 60,000ppm, due to the increasing in salt contents of the brine. It was also observed that the addition of magnesium and calcium with ratio 1:1 to the brine would greatly affect the silica solubility. This has been confirmed by analyzing the samples before and after saturation by the use of Energy Dispersive X-RAY. © 2016, North Atlantic University Union. All rights reserved.
format Article
author Ahmed, F.A.
Elraies, A.K.
Ayoub, A.M.
Gaafar, R.G.
spellingShingle Ahmed, F.A.
Elraies, A.K.
Ayoub, A.M.
Gaafar, R.G.
An experimental investigation on the impact of brine composition on silica solubility at high temperature
author_facet Ahmed, F.A.
Elraies, A.K.
Ayoub, A.M.
Gaafar, R.G.
author_sort Ahmed, F.A.
title An experimental investigation on the impact of brine composition on silica solubility at high temperature
title_short An experimental investigation on the impact of brine composition on silica solubility at high temperature
title_full An experimental investigation on the impact of brine composition on silica solubility at high temperature
title_fullStr An experimental investigation on the impact of brine composition on silica solubility at high temperature
title_full_unstemmed An experimental investigation on the impact of brine composition on silica solubility at high temperature
title_sort experimental investigation on the impact of brine composition on silica solubility at high temperature
publisher North Atlantic University Union
publishDate 2016
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85000578163&partnerID=40&md5=4a0c3ccfd3cd34ffd81dbee53e7bd358
http://eprints.utp.edu.my/25415/
_version_ 1738656726842867712
score 13.211869

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