Calcium Carbonate Scale Inhibition with Ultrasonication and a Commercial Antiscalant

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.

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Development of Poly(aspartic-co-glutamic acid) Green Antiscalant for Calcium Carbonate Scale Inhibition

Advanced Science Engineering and Medicine ◽

10.1166/asem.2020.2488 ◽

2020 ◽

Vol 12 (2) ◽

pp. 198-206

Author(s):

S. S. Barkade ◽

P. G. Bansod ◽

V. R. Doss ◽

S. P. Mardikar

Keyword(s):

Calcium Carbonate ◽

Glutamic Acid ◽

Polymer System ◽

Physicochemical Characterization ◽

X Ray Diffraction ◽

Cooling Systems ◽

Scale Inhibition ◽

And Performance ◽

Catalyst Effect ◽

Calcium Carbonate Scale

The performance of heat exchangers and water cooling systems is mainly affected by the major problem of calcium carbonate/sulphate based scale formation. Herein present paper, we are reporting synthesis, characterization and performance of novel aspartic-co-glutamic acid based polymer system as a green antiscalant. Aspartic-co-glutamic acid based polymer was developed using aspartic acid and glutamic acid as reactants and phosphoric acid as catalyst. Effect of different operating parameters viz. temperature, molar concentration of reactants, reaction time, etc. was studied thoroughly. The as-synthesized material was characterized by various physicochemical characterization techniques including fourier transform-Infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and X-ray diffraction (XRD) spectroscopy. The scale inhibition properties of the as-synthesised product were studied with respect to calcium carbonate at various pH and temperature range. Experimental results unveil that at 200 ppm concentration, the anti-scaling property of the as-synthesized material was found to be close to that of commercial antiscalant (KT-RO).

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Magnetic Water Treatment to Inhibit Calcium Carbonate Scale Deposition in the Drainage System of an Old Tunnel in Seoul, South Korea

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.594-597.2045 ◽

2012 ◽

Vol 594-597 ◽

pp. 2045-2055 ◽

Cited By ~ 3

Author(s):

Eric Yee ◽

Jongh Wi Lee ◽

Dae Sung Lim ◽

Byung Sik Chun

Keyword(s):

Calcium Carbonate ◽

South Korea ◽

Drainage System ◽

Test Results ◽

Water Flow Velocity ◽

Treated Water ◽

Scale Inhibition ◽

Traffic Tunnel ◽

Calcium Carbonate Scale ◽

Scale Deposits

Drainage inlets at the Namsan #3 traffic tunnel in Seoul, South Korea were found to be clogged with calcium carbonate scale deposits. Officials were concerned the clogged drains would further stress the already deteriorating traffic tunnel and wanted to see if there were any practical and economical solutions in removing or preventing scale deposits. A tunnel drainage simulator was constructed to determine the feasibility of using magnets to inhibit scale precipitation and deposition. Test results from the simulation show 6.0 and 4.4 g of deposited calcium carbonate in pipes inclined at 2° and 5° respectively, while magnetically treated water resulted in 10.8 and 4.3 g of deposited calcium carbonate in pipes inclined at 2° and 5° respectively. Calcium carbonate scale samples from the tunnel drainage test underwent x-ray diffraction analysis and showed the magnetically treated water to precipitate more aragonite. The solubility product and crystalline structures of calcite and aragonite are able to help explain tunnel drainage test results and suggest water flow velocity to be a potentially important factor in calcium scale inhibition if magnets are used.

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In-situ monitoring the inhibiting effect of polyphosphinocarboxylic acid on CaCO3 scale formation by synchrotron X-ray diffraction

Chemical Engineering Science ◽

10.1016/j.ces.2008.09.036 ◽

2009 ◽

Vol 64 (5) ◽

pp. 912-918 ◽

Cited By ~ 19

Author(s):

Tao Chen ◽

Anne Neville ◽

Ken Sorbie ◽

Zhong Zhong

Keyword(s):

Scale Formation ◽

In Situ Monitoring ◽

X Ray Diffraction ◽

X Ray ◽

Inhibiting Effect

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Comments on sample treatment in the X-ray diffraction analysis of the oxidation products of lead

Journal of Power Sources ◽

10.1016/0378-7753(90)80035-c ◽

1990 ◽

Vol 32 (1) ◽

pp. 71-80 ◽

Cited By ~ 4

Author(s):

T. Laitinen ◽

G. Sundholm ◽

J.K. Vilhunen

Keyword(s):

Diffraction Analysis ◽

Oxidation Products ◽

Sample Treatment ◽

X Ray Diffraction ◽

X Ray

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A flow cell forin situsynchrotron x-ray diffraction studies of scale formation under Bayer processing conditions

Review of Scientific Instruments ◽

10.1063/1.3183494 ◽

2009 ◽

Vol 80 (8) ◽

pp. 084102 ◽

Cited By ~ 11

Author(s):

Nathan A. S. Webster ◽

Ian C. Madsen ◽

Melissa J. Loan ◽

Nicola V. Y. Scarlett ◽

Kia S. Wallwork

Keyword(s):

Flow Cell ◽

Scale Formation ◽

Processing Conditions ◽

X Ray Diffraction ◽

X Ray

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The influence of magnetic fields on calcium carbonate scale formation within monoethylene glycol solutions at regeneration conditions

Journal of Petroleum Science and Engineering ◽

10.1016/j.petrol.2018.09.100 ◽

2019 ◽

Vol 173 ◽

pp. 158-169 ◽

Cited By ~ 7

Author(s):

Ammar Al Helal ◽

Adam Soames ◽

Stefan Iglauer ◽

Rolf Gubner ◽

Ahmed Barifcani

Keyword(s):

Calcium Carbonate ◽

Magnetic Fields ◽

Scale Formation ◽

Monoethylene Glycol ◽

Calcium Carbonate Scale

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Effects of Rotation Speeds and Media Density on Ground Calcium Carbonate during Ultrafine Grinding Process in Planetary Mill

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.997.542 ◽

2014 ◽

Vol 997 ◽

pp. 542-545

Author(s):

Yan Ru Chen ◽

Yi Chen Lu ◽

Xiao Min Lian ◽

Chao Yang Li ◽

Shui Lin Zheng

Keyword(s):

Particle Size ◽

Calcium Carbonate ◽

Rotational Speed ◽

Planetary Mill ◽

X Ray Diffraction ◽

X Ray ◽

Dry Grinding ◽

Ultrafine Grinding ◽

Effects Of Rotation ◽

Ground Calcium Carbonate

Superfine ground calcium carbonate (GCC) produced by carbonate minerals is a widely used inorganic powder material. In order to get a finer GCC powder with narrow distribution span, the effect of rotational speed and media density on ground GCC were studied by dry grinding GCC in a planetary ball mill under different rotational speed and various media density. The grinding limit-particle size and distribution of grinding calcium carbonate were measured by centrifugal sedimentation granulometer. The structure of GCC was measured by X-ray diffraction. The result shows that low rotational speed and high-density media is conducive to get a product with smaller particle size and narrow size distribution; crystal plane (012) and (122) are more stable than (018) and (116).

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