CATEGORY: PRODUCED WATER
Journal of the Chinese Chemical Society, Volume
60, Issue 6, pages 625–631, June 2013
Separation
and Determination of Diol Pollutants Come from Demulsifier in the Produced
Water of Oil Fields
Bahram Mokhtari (1), (2), Nasser Dalali (1), Kobra Pourabdollah (2)
mokhtari@iaush.ac.ir
1 Phase Separation & FIA Lab., Department of Chemistry, Faculty of Science,
Zanjan University, Zanjan 45195-313, Iran
2 Razi Chemistry Research Center (RCRC), Shahreza Branch, Islamic Azad
University, Shahreza, Iran
Abstract
Describes
an innovative test method for determination of the main demulsifier-based
pollutants in the produced water of oil wells, before draining to seawater. The
type, concentration and distribution of diols depend on the demulsifier of
interest. However, the main chemical species are the same. The novelty of this
work is selective extraction and preconcentration of low chain diols in the
produced water of oil fields.
In this extraction method, dispersive solvent containing extraction
solvent was rapidly injected into the water sample containing analytes, and a
cloudy solution was formed. After centrifugation, these droplets were
sedimented in the bottom of the conical test tube. Then 2.0 mL of sedimented
phase containing preconcentrated analytes was injected into the gas
chromatograph with flame ionization detector. The parameters affecting the
extraction efficiency were evaluated and optimized. Factors such as the kind
and volume of both extraction and disperser solvents, extraction and
centrifugation times, pH and temperature, and salt effect were studied and
optimized.
Full Text Source (Subscription or Fee): http://onlinelibrary.wiley.com/doi/10.1002/jccs.201200311/abstract
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