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Title: The nucleation kinetics of strontium sulfate in NaCl solutions up to 6 m and 90 C with or without inhibitors

Abstract

The nucleation kinetics of strontium sulfate in NaCl solutions from 0 to 6 m at temperatures from 25 to 90 C was studied by measuring the induction period in the absence and presence3 of scale inhibitors. Employing the classical nucleation theory, the interfacial tension between strontium sulfate and supersaturated solutions with NaCl was estimated to be about 67 mJ/m{sup 2} (1 m NaCl) at 25 C. It decreases slightly with increasing temperature (to 56 mJ/m{sup 2} in 1 m NaCl solutions at 90 C). It was observed that the length of the induction period generally decreases with increasing concentrations of electrolytes up to 3 m and then starts to increase slightly to 6 m at a given temperature and saturation index. In the case of NaCl electrolyte solutions, the induction period only decreases to 1 m and then starts to increase to 6 m, probably because of substitution of small ions (Na{sup +}) into SrSO{sub 4} nuclei and the crystal lattice. The accelerated nucleation rate of SrSO{sub 4} in electrolyte solutions was a result of enhanced solubility of SrSO{sub 4} and resultant lowered interfacial tension. Threshold inhibitors 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP), bishexamethylenetriaminetetra (methylene) phosphonic acid (BHTP), and phosphinopolycarboxylic acid (PPPC) aremore » effective in inhibiting SrSO{sub 4} nucleation in NaCl solutions. Prolonged induction periods in the presence of inhibitors can be interpreted in terms of an elevation in the interfacial tension (up to 90 mJ/m{sup 2} with 10 mg/liter HEDP).« less

Authors:
; ;  [1]
  1. Rice Univ., Houston, TX (United States). Dept. of Environmental Science and Engineering
Publication Date:
OSTI Identifier:
106235
Resource Type:
Journal Article
Journal Name:
Journal of Colloid and Interface Science
Additional Journal Information:
Journal Volume: 174; Journal Issue: 2; Other Information: PBD: 15 Sep 1995
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 03 NATURAL GAS; 15 GEOTHERMAL ENERGY; STRONTIUM SULFATES; PRECIPITATION; OIL WELLS; SCALE CONTROL; NATURAL GAS WELLS; GEOTHERMAL WELLS; CORROSION INHIBITORS; PERFORMANCE TESTING; SODIUM CHLORIDES; SURFACE TENSION; INTERFACES; TEMPERATURE DEPENDENCE; DISSOLUTION

Citation Formats

He, S, Oddo, J E, and Tomson, M B. The nucleation kinetics of strontium sulfate in NaCl solutions up to 6 m and 90 C with or without inhibitors. United States: N. p., 1995. Web. doi:10.1006/jcis.1995.1398.
He, S, Oddo, J E, & Tomson, M B. The nucleation kinetics of strontium sulfate in NaCl solutions up to 6 m and 90 C with or without inhibitors. United States. https://doi.org/10.1006/jcis.1995.1398
He, S, Oddo, J E, and Tomson, M B. Fri . "The nucleation kinetics of strontium sulfate in NaCl solutions up to 6 m and 90 C with or without inhibitors". United States. https://doi.org/10.1006/jcis.1995.1398.
@article{osti_106235,
title = {The nucleation kinetics of strontium sulfate in NaCl solutions up to 6 m and 90 C with or without inhibitors},
author = {He, S and Oddo, J E and Tomson, M B},
abstractNote = {The nucleation kinetics of strontium sulfate in NaCl solutions from 0 to 6 m at temperatures from 25 to 90 C was studied by measuring the induction period in the absence and presence3 of scale inhibitors. Employing the classical nucleation theory, the interfacial tension between strontium sulfate and supersaturated solutions with NaCl was estimated to be about 67 mJ/m{sup 2} (1 m NaCl) at 25 C. It decreases slightly with increasing temperature (to 56 mJ/m{sup 2} in 1 m NaCl solutions at 90 C). It was observed that the length of the induction period generally decreases with increasing concentrations of electrolytes up to 3 m and then starts to increase slightly to 6 m at a given temperature and saturation index. In the case of NaCl electrolyte solutions, the induction period only decreases to 1 m and then starts to increase to 6 m, probably because of substitution of small ions (Na{sup +}) into SrSO{sub 4} nuclei and the crystal lattice. The accelerated nucleation rate of SrSO{sub 4} in electrolyte solutions was a result of enhanced solubility of SrSO{sub 4} and resultant lowered interfacial tension. Threshold inhibitors 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP), bishexamethylenetriaminetetra (methylene) phosphonic acid (BHTP), and phosphinopolycarboxylic acid (PPPC) are effective in inhibiting SrSO{sub 4} nucleation in NaCl solutions. Prolonged induction periods in the presence of inhibitors can be interpreted in terms of an elevation in the interfacial tension (up to 90 mJ/m{sup 2} with 10 mg/liter HEDP).},
doi = {10.1006/jcis.1995.1398},
url = {https://www.osti.gov/biblio/106235}, journal = {Journal of Colloid and Interface Science},
number = 2,
volume = 174,
place = {United States},
year = {1995},
month = {9}
}