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

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.

Research on the synthesis and scale inhibition performance of a new terpolymer scale inhibitor

2015 ◽  
Vol 73 (7) ◽  
pp. 1619-1627 ◽  
Author(s):  
Yufei Bao ◽  
Meng Li ◽  
Yanqing Zhang
Keyword(s):  
Calcium Carbonate ◽  
Polymerization Reaction ◽  
Molar Ratio ◽  
Scale Inhibitor ◽  
Sodium Styrene Sulfonate ◽  
Scale Inhibition ◽  
High Conversion Rate ◽  
Infrared Spectrometer ◽  
Chelating Ability ◽  
Inhibition Performance

A new terpolymer named β-CD-MA-SSS was produced using free-radical polymerization of β-cyclodextrin (β-CD), maleic-anhydride (MA) and sodium-styrene-sulfonate (SSS) as monomers, with potassium persulfate (KPS) as initiator. Its performance as a scale inhibitor to prevent deposition of calcium carbonate (CaCO3) has been investigated. Experimental results demonstrated that β-CD-MA-SSS performed excellent scale inhibition and exhibited a high conversion rate under the following conditions: initiator consisting of 6%, molar ratio of reaction monomers SSS:MA = 0.8:1, MA:β-CD = 6:1, reaction temperature of 80 °C, reaction time of 6 h, and dropping time of 40 min when MA was dosed as a substrate, and SSS and KPS were dosed as dropping reactants simultaneously. Use of a Fourier transform infrared spectrometer for this inhibitor showed that the polymerization reaction had taken place with the reaction monomers under the above specified conditions. Scanning electron microscopy indicated that the β-CD-MA-SSS had a strong chelating ability for calcium (Ca2+) and a good dispersion ability for calcium carbonate (CaCO3).

Synthesis of New Phosphate and the Evaluation as Scale Inhibitor in Oilfield

2019 ◽  
Vol 814 ◽  
pp. 493-498
Author(s):  
Ren Jun Xu ◽  
Hua Lei He ◽  
Jing Wang ◽  
Hai Peng Hui ◽  
Qiao Na Liu
Keyword(s):  
Calcium Carbonate ◽  
Phosphonic Acid ◽  
Synthesis Method ◽  
Normal Growth ◽  
Inhibition Rate ◽  
Scale Inhibitor ◽  
Composite Scale ◽  
Scale Inhibition ◽  
Ph Range ◽  
Inhibition Performance

Compared with inorganic phosphonates, organic phosphonates have better chemical stability in water treatment, and are not easy to hydrolyze in higher temperature and wider pH range. In this paper, a one-step synthesis method of ethylene diamine tetra (methylene phosphonic acid) sodium (EDTMPS) and methylene phosphonic acid (DTPMPA) were studied. A new phosphate scale inhibitor was prepared and its scale inhibition performance was evaluated. The results showed that the scale inhibition rate increased with the increase of the concentration of synthetic products (EDTMPS, DTPMPA). At the same concentration, compared with DTPMPA, EDTMPS has better scale inhibition performance, and the maximum scale inhibition rate can reach 96.85%. The scale inhibition performance of composite scale inhibitor is better than that of single scale inhibitor, and the scale inhibition rate of the synthesized products can reach more than 90% after compounding. And inhibitory mechanism has been proposed: Because phosphonates effectively control the rate of nucleation. In addition, polyphosphonates can chelate Ca2+, Mg2+ plasma to form monocyclic or bicyclic chelates. This will destroy the normal growth process of calcium carbonate and other crystals, thus preventing the formation of calcium carbonate scale.

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.

Effects of Al2O3 Nanoparticles on the Crystallization of Calcium Carbonate in Aqueous Solution

2019 ◽  
Vol 19 (6) ◽  
pp. 3471-3478 ◽  
Author(s):  
Feng Wang ◽  
Hong-Hua Ge ◽  
Kai Wu ◽  
Le-Tian Wang ◽  
Chuan Wan ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Gravimetric Method ◽  
Test Solution ◽  
Al2o3 Nanoparticles ◽  
X Ray Diffraction ◽  
Scale Inhibition ◽  
Heat Exchange Surface ◽  
Inhibition Performance ◽  
Exchange Surface ◽  
Surface Scale

The effects of Al2O3 nanoparticles on the precipitation behavior of CaCO3 and on the anti-scale performance of 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) in CaCO3 growth solution were studied by means of solution analysis, gravimetric methods, scanning electron microscopy, Fourier transform infrared spectroscopy and X-ray diffraction. The results illustrate that Al2O3 nanoparticles had little effect on the concentration of calcium ions in the test solution without PBTCA, but significantly changed the form and morphology of calcium carbonate crystals, which were transformed from calcite to aragonite. As a commonly used and effective scale inhibitor, PBTCA showed good Ca2+ retention ability in the test solution, distorting the calcite crystal lattice and promoting the formation of vaterite. When Al2O3 nanoparticles co-existed with PBTCA in the test solution, calcium carbonate was more likely to precipitate, and the Ca2+ retention ability of PBTCA reduced. A newly designed gravimetric method was used to evaluate the scale inhibition performance of Al2O3 nanoparticles on the heat exchange surface. When the concentration of Al2O3 nanoparticles reached 1 g/L, the surface scale inhibition efficiency of Al2O3 nanoparticles exceeded 80%.

Synthesis, Characterization and Properties of the IA / SAS Copolymer

2013 ◽  
Vol 423-426 ◽  
pp. 404-407
Author(s):  
Zhen Fa Liu ◽  
Hao Lin Fu ◽  
Li Hui Zhang ◽  
Yan He Zhang ◽  
Xuan Liu
Keyword(s):  
Calcium Carbonate ◽  
Calcium Phosphate ◽  
Itaconic Acid ◽  
Inhibition Rate ◽  
Biodegradation Rate ◽  
Scale Inhibition ◽  
Good Scale

A copolymer was prepared from itaconic acid (IA) and sodium allysulfonate (SAS). The structure of the IA/SAS copolymer was characterized by the means of FTIR. The performances of scale inhibition, dispersion and biodegradability of the IA/SAS copolymer were studied. The results showed that the IA/SAS copolymer had good scale inhibition and dispersing performance. The scale inhibition rate on calcium carbonate was 93% when the copolymer was 20 mg·L-1. The scale inhibition rate on calcium phosphate was 92% when the copolymer was 24 mg·L-1. The copolymer had good biodegradation performance and biodegradation rate could reach 69.5% after 28 days.

Combined effect of constant high voltage electrostatic field and variable frequency pulsed electromagnetic field on the morphology of calcium carbonate scale in circulating cooling water systems

2014 ◽  
Vol 70 (6) ◽  
pp. 1074-1082 ◽  
Author(s):  
Ju-Dong Zhao ◽  
Zhi-An Liu ◽  
Er-Jun Zhao
Keyword(s):  
Calcium Carbonate ◽  
Electromagnetic Fields ◽  
High Voltage ◽  
Combined Effect ◽  
Variable Frequency ◽  
Pulsed Electromagnetic Fields ◽  
Calcium Carbonate Precipitation ◽  
Water Flow Velocity ◽  
Scale Inhibition ◽  
Pulsed Electromagnetic

Research on scale inhibition is of importance to improve the heat transfer efficiency of heat exchangers. The combined effect of high voltage electrostatic and variable frequency pulsed electromagnetic fields on calcium carbonate precipitation was investigated, both theoretically and experimentally. Using energy dispersive spectrum analysis, the predominant phase was found to be CaCO3. The formed crystal phases mainly consist of calcite and aragonite, which is, in part, verified by theory. The results indicate that the setting of water flow velocity, and high voltage electrostatic and variable frequency pulsed electromagnetic fields is very important. Favorable values of these parameters can have a significant anti-scaling effect, with 68.95% of anti-scaling ratio for scale sample 13, while unfavorable values do not affect scale inhibition, but rather promoted fouling, such as scale sample 6. By using scanning electron microscopy analysis, when the anti-scaling ratio is positive, the particle size of scale was found to become smaller than that of untreated sample and the morphology became loose. The X-ray diffraction results verify that the good combined effect favors the appearance and growth of aragonite and restrains its transition to calcite. The mechanism for scale reduction is discussed.

Study on Scale Inhibition Performance of Polyaspartic Acid Derivatives with Dihydroxyl Group on CaCO3

2011 ◽  
Vol 361-363 ◽  
pp. 1982-1986 ◽  
Author(s):  
Li Jun Fu ◽  
Yu Zeng Zhao ◽  
Hong Hua Ge ◽  
Yong Sheng Li
Keyword(s):  
Aqueous Solution ◽  
Cooling Water ◽  
Ftir Spectrum ◽  
Polyaspartic Acid ◽  
Environment Friendly ◽  
Scale Inhibition ◽  
Inhibition Performance

An environment-friendly and multifunctional agent for industry circulation cooling water, polyaspartic acid derivatives with dihydroxyl group(DHPAP) was synthesized in aqueous solution. The FTIR spectrum of DHPAP was analyzed. Static experiments were carried out to validate scale inhibition performance of DHPAP. The scale inhibition ratios exceed 90% when 8 and 10 mg/L DHPAP under solution temperatures of 80 and 60°C, respectively. The scale inhibition ratios increase by increasing the DHPAP concentration with 6 and 8 mg/L under heating times of 10 and 6h, respectively. And the scale inhibition ratios are over 90%.

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