Calcium carbonate scale control, effect of material and inhibitors

2004 ◽  
Vol 49 (2) ◽  
pp. 153-159 ◽  
Author(s):  
J. Macadam ◽  
S.A. Parsons
Keyword(s):  
Calcium Carbonate ◽  
Dose Range ◽  
Physical Nature ◽  
Copper Surface ◽  
Scale Formation ◽  
Calcium Carbonate Precipitation ◽  
Control Effect ◽  
Iron And Zinc ◽  
Scale Control ◽  
Calcium Carbonate Scale

This paper focuses on developing a reproducible method for reducing calcium carbonate scale formation on heated surfaces where scaling can cause serious problems. It is known that calcium carbonate precipitation is sensitive to impurity ions, such as iron and zinc, even at trace concentration levels. In this paper two sets of experiments are reported. The first experiments were undertaken to investigate the effect of zinc, copper and iron dosing on CaCO3 nucleation and precipitation. Results from the experiments showed that the most effective inhibitor of CaCO3 precipitation was zinc and the effect was linked to dose levels and temperature. Copper and iron had little effect on precipitation in the dose range investigated. The second trial was undertaken to translate the precipitation data to scale formation. These tests were undertaken at 70°C. 5 mg.L-1 zinc dose reduced the scale formation by 35%. The effect of iron on calcium carbonate scaling rate was not significant. The physical nature of the material on which the scale is formed also influences the scaling. The scaling experiment was also used to investigate the effect of different surface material (stainless steel, copper and aluminium) on CaCO3 scale formation. Copper surface scaled the most.

Top-down model of calcium carbonate scale formation in turbulent pipe flows

2021 ◽  
pp. 101141
Author(s):  
L. Moriconi ◽  
T. Nascimento ◽  
B.G. B. de Souza ◽  
J.B.R. Loureiro
Keyword(s):  
Calcium Carbonate ◽  
Scale Formation ◽  
Top Down ◽  
Pipe Flows ◽  
Calcium Carbonate Scale

Effect of Electronic Water Treatment System on Calcium Carbonate Scale Formation in Landfill Leachate Collection Piping

2019 ◽  
Vol 145 (9) ◽  
pp. 04019052 ◽  
Author(s):  
Bishow N. Shaha ◽  
Daniel E. Meeroff ◽  
Kevin Kohn ◽  
Timothy G. Townsend ◽  
John D. Schert ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Water Treatment ◽  
Landfill Leachate ◽  
Scale Formation ◽  
Treatment System ◽  
Water Treatment System ◽  
Leachate Collection ◽  
Calcium Carbonate Scale

Calcium Carbonate Scale Formation on Heated Metal Surfaces

Geothermics ◽  
1989 ◽  
Vol 18 (1-2) ◽  
pp. 83-88 ◽  
Author(s):  
Evangelos Dalas ◽  
Petros G. Koutsoukos
Keyword(s):  
Calcium Carbonate ◽  
Metal Surfaces ◽  
Scale Formation ◽  
Calcium Carbonate Scale ◽  
Heated Metal

scholarly journals Calcium Carbonate Scale Inhibition with Ultrasonication and a Commercial Antiscalant

Water ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 3428
Author(s):  
Chanbasha Basheer ◽  
Amjad A. Shaikh ◽  
Eid M. Al-Mutairi ◽  
Mokhtar Noor El Deen ◽  
Khurram Karim Qureshi
Keyword(s):  
Calcium Carbonate ◽  
Scale Formation ◽  
Sample Treatment ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scale Inhibition ◽  
Irradiation Sample ◽  
Calcium Carbonate Deposition ◽  
Calcium Carbonate Scale ◽  
Scale Deposits

In this study, ultrasonication-assisted calcium carbonate scale inhibition was investigated compared with a commercial antiscalant ATMP (amino tris(methyl phosphonic acid)). The effects of varying ultrasound amplitude, pH, and inhibition duration were evaluated. The inhibition of calcium carbonate scale formation was measured based on the concentration of calcium in the solution after subjecting to different conditions. Scale deposits were also characterized using scanning electron microscopy and X-ray diffraction spectroscopy. Inhibition of scale formation was supported at a pH of 7 for an ultrasound amplitude of 150 W. A 94% calcium carbonate inhibition was recorded when the experiment was carried out with ultrasonication. The use of 5 mg/L ATMP achieved a 90% calcium carbonate inhibition of ATMP. The result of the characterization revealed that the morphology of the crystals was unaffected by ultrasonic irradiation. Sample treatment was performed with two different membranes to evaluate the calcium carbonate deposition, and data reveals that, at identical conditions, ultrasonication provides less deposition when compared to the control experiments.

scholarly journals Calcium Carbonate Scale Formation, Prediction and Treatment (Case Study Gumry Oilfield-PDOC)

2013 ◽  
Vol 17 ◽  
pp. 47-58 ◽  
Author(s):  
A. Saifelnasr ◽  
M. Bakheit ◽  
K. Kamal ◽  
A. Lila
Keyword(s):  
Calcium Carbonate ◽  
Produced Water ◽  
Saturation Index ◽  
Water Injection ◽  
Stability Index ◽  
Scale Formation ◽  
Injection Process ◽  
Langelier Saturation Index ◽  
Calcium Carbonate Scale

In this study the predictions and probabilities of calcium carbonate scale formation and corrosion occurrence inside Gumry Field Process Facilities (GFPF) and produced water injection process units (PWTP) was carried out. This was done calculating the Langelier Saturation Index (LSI), Ryznar Stability Index (RSI), Puckorius Scaling Index (PSI). The samples results for LSI index and PSI index were compared and found that all samples under threaten of calcium carbonate scale. The samples results for RSI index and found that all samples under formation of heavy calcium carbonate scale. Special excel computer program was designed to calculate the (LSI, RSI, PSI). The scale was cleaned and removed by 10% diluted hydrochloric acid and commercial scale inhibitor.

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