Influence of water hardness, substrate nature and temperature on heterogeneous calcium carbonate nucleation

Amor, Mohamed Ben; Zgolli, D.; Tlili, Mohamed; Manzola, A.S.

doi:10.1016/j.desal.2004.06.061

Cited by 73 publications

(14 citation statements)

References 6 publications

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“…The commonly occurring scales are calcium carbonate, calcium sulfate, barium sulfate, calcium phosphate, calcium oxalate, etc. and among them, calcium sulfate is considered the most prominent [5][6][7][8]. To eliminate or to reduce these problems, waters used in cooling systems are treated with inhibitive formulations.…”

Section: Introductionmentioning

confidence: 99%

Performance of an environmentally friendly anti-scalant in CaSO4 scale inhibition

Wang

Liu

Huang

et al. 2015

Desalination and Water Treatment

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2015) Performance of an environmentally friendly anti-scalant in CaSO 4 scale inhibition, Desalination and Water Treatment, 53:1, 8-14, A B S T R A C TThe precipitation of calcium sulfate (CaSO 4 ) scale on heat transfer surfaces widely occurs in numerous industrial processes. For the control of calcium sulfate scale, a novel environmentally friendly type of scale inhibitor Acrylic acid-oxalic acid-allypolyethoxy carboxylate (AA-APEM9) was synthesized and characterized, and the anti-scale property of the AA-APEM9 copolymer towards calcium sulfate in the artificial cooling water was studied through static scale inhibition tests. It was shown that AA-APEM9 exhibited excellent ability to control calcium sulfate scale, with approximately 97.1% calcium sulfate inhibition at a level of 4 mg/L AA-APEM9. Scanning electron microscopy and X-ray powder diffraction studies have been performed to identify the change in crystal surfaces by the addition of the copolymer. Inhibition mechanism is proposed that PAA can recognize and react with positively charged calcium ions on the surface of inorganic minerals and water-compatible PEG segments increase its solubility in water.

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Section: Introductionmentioning

confidence: 99%

Performance of an environmentally friendly anti-scalant in CaSO4 scale inhibition

Wang

Liu

Huang

et al. 2015

Desalination and Water Treatment

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“…In fully laminar the formation was in a slow growth while in fully turbulent the formation was easily found in the angels (Amor et al, 2004). The flow of the fouling is described as having pronounced rippling and surface waves of partially laminar and partially turbulent nature.As the turbulent also will enhance the mass transfer,the rate of crystal deposition can also be promoted (Gourdon, 2011).…”

Section: Introductionmentioning

confidence: 96%

Calcium Carbonate Scale Formation in Copper Pipes on Laminar Flow

Raharjo

Bayuseno

Muryanto

2016

MATEC Web of Conferences

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Calcium carbonate is commonly precipitated as a scale in the transportation pipes of water. The presence of this mineral deposit becomes problematic, because it can block the pipes and lead to a decline in piping performance. Calcium carbonate precipitation from the synthetic solution was experimentally investigated in the present study. The aim of research was to predict the occurrence of precipitates and characterize the scale precipitated from the solutions. The synthetic solutions were prepared using CaCl2 and Na2CO3, which was mixed with distilled water (H2O). The concentrations of Ca 2+ at 2000, 3000, 4000 and 5000 ppm. in the solution were adjusted and the solution flow in the Cu pipes at the different flow rate of 30, 40 and 50 ml/min. It was found that in all the experiments, the conductivity decreased abruptly after a certain induction period. Higher temperature produced more mass of the scale indicating that the increasing temperature promote scale formation. SEM analysis showed that the scale was rhombohedral, while EDS revealed that the elemental composition of the scale consisted of Ca, C and O. The crystalinity of the scale was found to be mostly calcit as shown by the XRD

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“…Due to its low solubility, calcium carbonate is the major salt which may lead to the formation of scale in the pipes [1][2][3]. The appearance and persistence of the three crystalline polymorphs, calcite, aragonite and vaterite are highly dependent on the local condition of precipitation temperature, supersaturation and the presence of additives in water.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of scaling control by a non-phosphorous polymer: polyaspartic acid

Martinod

Neville

Euvrard

2009

Desalination and Water Treatment

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Influence of water hardness, substrate nature and temperature on heterogeneous calcium carbonate nucleation

Cited by 73 publications

References 6 publications

Performance of an environmentally friendly anti-scalant in CaSO4 scale inhibition

Performance of an environmentally friendly anti-scalant in CaSO4 scale inhibition

Calcium Carbonate Scale Formation in Copper Pipes on Laminar Flow

Experimental investigation of scaling control by a non-phosphorous polymer: polyaspartic acid

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