Scale Inhibition Performance Research of Polyaspartic Acid/Diethylenetriamine Graft Copolymer

2015 ◽  
Vol 48 (6) ◽  
pp. 506-510 ◽  
Author(s):  
Xinhai Wang ◽  
Xiaogai Lv ◽  
Ben Zhang ◽  
Bin Xu ◽  
Ying Xu
Keyword(s):  
Graft Copolymer ◽  
Polyaspartic Acid ◽  
Scale Inhibition ◽  
Inhibition Performance ◽  
Performance Research

Synthesis of polyaspartic acid–aminobenzenesulfonic acid grafted copolymer and its scale inhibition performance and dispersion capacity

2011 ◽  
Vol 64 (2) ◽  
pp. 423-430 ◽  
Author(s):  
Ying Xu ◽  
Lina Wang ◽  
Linlin Zhao ◽  
Yuanchen Cui
Keyword(s):  
Corrosion Inhibition ◽  
Graft Copolymer ◽  
Polyaspartic Acid ◽  
Copolymer Solution ◽  
Sulfonic Group ◽  
Grafted Copolymer ◽  
Scale Inhibition ◽  
Dispersion Capacity ◽  
Inhibition Performance ◽  
Inhibition Ability

Polysuccinimide (abridged as PSI) was synthesized by urea and maleic anhydride. Aminobenzenesulfonic acid (ABSA) was introduced at different mole ratio to PSI to generate polyaspartic acid (abridged as PASP)/ABSA graft copolymer. The scale inhibition behavior of resultant PASP/ABSA copolymer was evaluated by using static scale inhibition method. The transmittance of the supernatant of the copolymer solution was measured to evaluate its dispersion ability for ferric oxide. The corrosion inhibition performance of the copolymer for iron plates immersed in the refined testing water (including 0.555 g of CaCl2·2H2O, 0.493 g of MgSO4·7H2O, 50 mg PASP/ABSA graft copolymer and 0.168 g of NaCl) was tested. It was found that PASP/ABSA copolymer was able to efficiently inhibit CaCO3 and Ca3(PO4)2 scales and had good corrosion inhibition ability as well, and it also had good dispersion ability for Fe2O3. Besides, the inhibition efficiency of PASP/ABSA against CaCO3 and Ca3(PO4)2 scales and its dispersion capacity for Fe2O3 was highly dependent on dosage. The reason may lie in that PASP/ABSA copolymer simultaneously possesses carboxylic ion and sulfonic group which can chelate Ca2+ to form stabilized and dissoluble chelates, resulting in increase of solubility of calcium salts in water. Also it may lie in that the introduction of acidic hydrophilic sulfonic group with a strong electrolytic capacity into PASP molecule simultaneously enhances the dispersion of the inhibitor molecules and hinders the formation of Ca3(PO4)2 scale.

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%.

Experimental study on scale inhibition performance of a green scale inhibitor polyaspartic acid

2008 ◽  
Vol 51 (7) ◽  
pp. 695-699 ◽  
Author(s):  
ZhenHua Quan ◽  
YongChang Chen ◽  
XiuRong Wang ◽  
Cheng Shi ◽  
YunJie Liu ◽  
...  
Keyword(s):  
Experimental Study ◽  
Scale Inhibitor ◽  
Polyaspartic Acid ◽  
Scale Inhibition ◽  
Inhibition Performance

Scale inhibition performance and mechanism of sulfamic/amino acids modified polyaspartic acid against calcium sulfate

Desalination ◽  
2017 ◽  
Vol 419 ◽  
pp. 152-159 ◽  
Author(s):  
Shaopeng Zhang ◽  
Haojie Qu ◽  
Zhen Yang ◽  
Chang-e Fu ◽  
Ziqi Tian ◽  
...  
Keyword(s):  
Amino Acids ◽  
Calcium Sulfate ◽  
Polyaspartic Acid ◽  
Scale Inhibition ◽  
Inhibition Performance ◽  
Performance And Mechanism

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.

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