scholarly journals Formation and Inhibition of Calcium Carbonate Crystals under Cathodic Polarization Conditions

Crystals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 275
Author(s):  
Kun Sheng ◽  
Honghua Ge ◽  
Xin Huang ◽  
Yi Zhang ◽  
Yanfang Song ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Lattice Distortion ◽  
Inhibition Efficiency ◽  
Cathode Surface ◽  
Cathodic Polarization ◽  
Gravimetric Analysis ◽  
Inhibition Effect ◽  
Good Surface ◽  
Scale Inhibition ◽  
Inhibition Performance

The formation of CaCO3 crystals on the cathode surface and the scale-inhibition performance of scale inhibitor 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) on the cathode surface were studied by methods of solution analysis, gravimetric analysis, SEM, FTIR, and XRD techniques. They were then compared with the results of the formation and suppression of CaCO3 crystals in aqueous solution. PBTCA had a good solution-scale-inhibition performance and good lattice-distortion effects on CaCO3 crystals in solution, which could change the CaCO3 from calcite to vaterite and aragonite crystals. The solution-scale-inhibition efficiency exceeded 97% when the PBTCA concentration reached 8 mg/L. Under cathodic polarization conditions, the surface-scale-inhibition efficiency of the cathode and solution-scale-inhibition efficiency near the cathode surface both exceed 97% at polarization potential of −1V. The addition of PBTCA significantly reduced the amount of CaCO3 crystals formed on the cathode surface and had good surface and solution-scale-inhibition effect. However, the lattice-distortion effect of PBTCA on CaCO3 crystals disappeared on the cathode surface, and the resulting CaCO3 contained only calcite crystals. The high-scale-inhibition effect of PBTCA under cathodic polarization was mainly due to the inhibition of the formation of calcium carbonate crystals by PBTCA, and not because of the lattice distortion of CaCO3 crystals.

Research on Corrosion and Scale Inhibition Performance of HEDP

2012 ◽  
Vol 535-537 ◽  
pp. 1180-1184
Author(s):  
Mao Dong Li ◽  
Bin Zeng ◽  
Lin Yang ◽  
Jun Ming Zhao ◽  
Yu Hui Du ◽  
...  
Keyword(s):  
Corrosion Inhibition ◽  
Concentration Ratio ◽  
Inhibition Efficiency ◽  
Total Iron ◽  
Water Medium ◽  
Boiler Water ◽  
Inhibition Effect ◽  
Scale Inhibition ◽  
Industrial Boiler ◽  
Inhibition Performance

The static scale inhibition method will be used to evaluate the scale inhibition performance of HEDP. In order to study the corrosion inhibition of 20A steel with additive of HEDP in the industrial boiler water medium，the total iron ions in the solution are determined through autoclave static experiments. The results indicated that the scale inhibition efficiency，in the simulation boiler water with a certain concentration ratio and temperature，reached the maximum when CHEDP is 7 mg/L. It has a good corrosion inhibition effect on the 20A steel when the HEDP concentration exceeds 15ppm.

Calcium carbonate scale inhibition of a cathode surface under polarization by 2-phosphonobutane-1, 2, 4-tricarboxylic acid

2021 ◽  
Vol 210 ◽  
pp. 91-102
Author(s):  
Kun Sheng ◽  
Yanfang Song ◽  
Fang Ge ◽  
Xin Huang ◽  
Yi Zhang ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Cathode Surface ◽  
Tricarboxylic Acid ◽  
Scale Inhibition ◽  
Calcium Carbonate Scale

Formation and Mitigation of BaSO4 Scale in Oil Fields

2015 ◽  
Vol 814 ◽  
pp. 278-285
Author(s):  
Ming Zhu ◽  
Cheng Qiang Ren ◽  
Yuan Yuan Meng ◽  
Li Liu ◽  
Yun Ping Zheng
Keyword(s):  
Inhibition Efficiency ◽  
Oil Fields ◽  
Scale Inhibitor ◽  
Conductivity Method ◽  
Environment Friendly ◽  
Scale Inhibition ◽  
Negative Role ◽  
Corrosion Inhibition Efficiency ◽  
Effects Of Temperature ◽  
Inhibition Performance

The deposition of BaSO4scale is always found in the oilfield. It is difficult to be removed. Therefore, it plays a negative role to the production. The effects of temperature and water chemistry on BaSO4scale have been investigated by using the conductivity method in this work. An environment-friendly copolymer was prepared to control the scaling of BaSO4. The copolymer was proved by static scale inhibition method, and weight-loss test that it has excellent scale inhibition performance and corrosion inhibition efficiency. Furthermore, FTIR spectra was used to prove that the scale inhibitor was polyepoxysuccinic acid (PESA).

Synthesis and Properties of the ESA/AMPS Copolymer

2012 ◽  
Vol 164 ◽  
pp. 194-198 ◽  
Author(s):  
Zhan Liu ◽  
Xin Wang ◽  
Zhen Fa Liu
Keyword(s):  
Calcium Carbonate ◽  
Calcium Phosphate ◽  
Succinic Acid ◽  
Ferric Oxide ◽  
Sulfonic Acid ◽  
Inhibition Rate ◽  
Biodegradation Rate ◽  
Scale Inhibition ◽  
Inhibition Performance ◽  
Better Than

A copolymer was prepared from epoxy succinic acid (ESA) and 2-acrylamido-2-methyl propane sulfonic acid (AMPS). The structure of the ESA/AMPS copolymer was characterized by means of FTIR. The performances of scale inhibition, dispersion and biodegradability of the ESA/AMPS copolymer were studied. The results showed that the scale inhibition performance of the ESA/AMPS copolymer on calcium phosphate and dispersing performance on ferric oxide were much better than PESA. The scale inhibition rate on calcium carbonate was 85% when the ESA/AMPS copolymer was 8mg/L. The scale inhibition rate on calcium phosphate was 65% when the ESA/AMPS copolymer was 30mg/L. The ESA/AMPS copolymer had good biodegradation performance and biodegradation rate could reach 65% after 28 days.

Study on the Polyaspartic Acid Derivative Synthesis and the Scale Inhibition Performance of Calcium Carbonate

2012 ◽  
Vol 610-613 ◽  
pp. 1513-1517
Author(s):  
Gang Lu ◽  
Yue Huang
Keyword(s):  
Electron Microscope ◽  
Calcium Carbonate ◽  
Inhibition Rate ◽  
Polyaspartic Acid ◽  
Static State ◽  
Scale Inhibition ◽  
Overall Performance ◽  
Inhibition Performance ◽  
Intermediate Vector ◽  
Scanning Electron

Intermediate vector polysuccinimide (PSI) was prepared by polymerization of malefic acid and ammonia at 180°Cin this article. Hydrophilic polyaspartic acid (PASP) derivative was prepared from amino-sulfonic and PSI; Lipophilic PASP derivative was prepared from PSI and diisopropylamine. Their scale inhibition rates of calcium carbonate were evaluated by static scale experiments. The inhibition rate of calcium carbonate was 90.2% when n(amino-sulfonic): n(PSI) =1:14 and the dosage of pharmaceutical was 12mg / L. The inhibition rate of calcium carbonate was 87.6% when n(diisopropylamine):n(PSI)=1:8 and the dosage of pharmaceutical was 15mg /L. The calcium carbonate that collected from static state experiments was analysised by scanning electron microscope (SEM). The results showed that polyaspartic acid derivatives were synthesized which had the best overall performance when n (amino-sulfonic): n (PSI) = 1:14.

Highly effective scale inhibition performance of amino trimethylenephosphonic acid on calcium carbonate

Desalination ◽  
2017 ◽  
Vol 422 ◽  
pp. 165-173 ◽  
Author(s):  
Yan Ji ◽  
Yun Chen ◽  
Jinxun Le ◽  
Mengqi Qian ◽  
Ying Huan ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Scale Inhibition ◽  
Highly Effective ◽  
Inhibition Performance

Research on the Scale Inhibition Performance of AA/SAS Binary Polymer

2013 ◽  
Vol 448-453 ◽  
pp. 3949-3953
Author(s):  
Shan Fa Tang ◽  
Hui Liao ◽  
Lei Tian ◽  
Xiao Jie Wang ◽  
Xiao Yang Lei ◽  
...  
Keyword(s):  
Inhibition Efficiency ◽  
Formation Water ◽  
Mass Ratio ◽  
High Concentration ◽  
Binary Polymer ◽  
Scale Inhibition ◽  
High Calcium ◽  
Barium Ion ◽  
Strontium Ions ◽  
Inhibition Performance

The binary polymer AA/SAS was synthesized by acrylic acid (AA) and sodium allylsulfonate (SAS), named as AS and its structure was characterized. Its scale inhibition performance was also investigated for single CaCO3, CaSO4 scales, and composite scales in simulated formation water containing Ca2+, Mg2+, Ba2+ and Sr2+. The results indicate that when adding 50mg/L of the inhibitor, it is 85.05% efficient for CaCO3 inhibition and 98.85% for CaSO4, but only 49.05% and 51.58% for BaSO4 and SrSO4 separately. The scale inhibition performance is obvious in the simulated formation water with high concentration of calcium (1300mg/L) and low barium ion (100mg/L ), the inhibition efficiency are both above 85% at a dosage of 80mg/L. And it can fairly satisfy the demand of inhibiting composite scales (CaCO3 scale, CaSO4 scale, BaSO4 scale and SrSO4 scale), when AS and CT was combined at a mass ratio of 2:1 in high calcium , barium and strontium ions contained formation water, being 95.3% efficient at the dosage of 100mg/L.

scholarly journals Synthesis of Poly (Citric Acid-Co-Glycerol) and Its Application as an Inhibitor of CaCO3 Deposition

Materials ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 3800
Author(s):  
Hala Zahlan ◽  
Waseem Sharaf Saeed ◽  
Radwan Alrasheed ◽  
Naser M. Alandes ◽  
Taieb Aouak
Keyword(s):  
Citric Acid ◽  
Calcium Carbonate ◽  
Inhibition Efficiency ◽  
Resonance Spectroscopy ◽  
Scanning Calorimetry ◽  
Hyperbranched Polyesters ◽  
Scale Inhibition ◽  
Analysis Measurement ◽  
Ft Ir ◽  
Thermal Polycondensation

This investigation determined a feasible route to prepare hyperbranched polyesters involving citric acid (CA) and glycerol (GLC) monomers (CA-co-GLC) using a thermal polycondensation method. The synthesized copolymer was characterized using Fourier transform infrared spectroscopy (FT-IR), carbon-13 nuclear magnetic resonance spectroscopy, and differential scanning calorimetry. The ability of CA-co-GLC to inhibit deposition of inorganic scales such as calcium carbonate was investigated under varying temperature and pH medium. The evaluation of inhibition efficiency (IE) was conducted using the static scale inhibition method. The mechanism of the inhibitor’s action was investigated via growth solution analysis, measurement conductivity, and analysis of CaCO3 using FT-IR and scanning electron microscopy. The results obtained showed that the CA-co-GLC had good IE at an elevated temperature reaching 75% at 100 °C, pH 7.5, and 10 ppm copolymer dose. Using the same dose, the IE reached 66% at 50 °C and pH 10. The CA-co-GLC did not chelate Ca2+ in water, but led to a change in polymorphism, making it brittle and able to slip easily from the surface. Its action principally prevented the adhesion of calcium carbonate onto the surface.

Research on the Scale Inhibition Performance of AA/MA/MAC Copolymer

2012 ◽  
Vol 554-556 ◽  
pp. 223-226 ◽  
Author(s):  
Shan Fa Tang ◽  
Wei Zou ◽  
Yu Juan Xiong ◽  
Xue Yang ◽  
Lei Tian
Keyword(s):  
Aqueous Medium ◽  
Ion Concentration ◽  
Formation Water ◽  
Inhibition Rate ◽  
Inhibition Effect ◽  
Composite Scale ◽  
Scale Inhibition ◽  
High Calcium ◽  
Inhibition Performance ◽  
Strontium Ion

The terpolymer was synthesized by maleic anhydride (MA), acrylic acid (AA) and methyl acrylate (MAC) and the structure was also conformed. Its scale inhibition effect was also studied in high barium and strontium ion concentration aqueous medium and simulated formation water (Ca2+, Mg2+, Ba2+, Si2+) condition. The results indicate that when additive amount of AA/MAC/MA is 60 mg/L, the inhibition rate is up to 100% and 80% for BaSO4 scale and SrSO4 scale respectively, but only 50% for calcium scale. And the scale inhibition rate moderately increases with the dosage increasing. The scale inhibition effect of AA/MAC/MA is also very obvious in simulated formation water containing low calcium ions (400 mg/L) and high barium ions (500 mg/L) as well as strontium ions (500 mg/L). It can satisfy the need of restraining composite scale (BaSO4 scale and SrSO4 scale as well as CaSO4 scale) in high calcium and barium strontium ion aqueous medium when compounded with calcium scale inhibitors CY and CX respectively.

Sign in / Sign up

Export Citation Format

Share Document