Study on Scale Inhibition Performance of Modified Polyaspartic Acid

2014 ◽  
Vol 893 ◽  
pp. 7-10 ◽  
Author(s):  
Yu Hua Gao ◽  
Zhen Fa Liu ◽  
Li Hui Zhang ◽  
Yun Juan Wu
Keyword(s):  
Cooling Water ◽  
Water Systems ◽  
Solution Temperature ◽  
Inhibition Rate ◽  
Polyaspartic Acid ◽  
Scale Inhibition ◽  
Dynamic Experiments ◽  
Treatment Experiment ◽  
Good Scale ◽  
Inhibition Performance

Static and dynamic experiments were used to evaluate scale inhibition performance of modified polyaspartic acid (PASP-ASP). The static experiments showed that the PASP-ASP had good scale inhibition performance and the scale inhibition rate exceeded 98% when the PASP-ASP was 2 mg·L-1 and the solution temperature was 40 OC. In the dynamic experiments, almost no scale was formed on the heat transfer surface and the fouling thermal resistance decreases extraordinarily with PASP-ASP treatment experiment compared with the experiment without treatment. The PASP-ASP could be used in industrial cooling water systems.

Study on Scale Inhibition Performance of Polyaspartic Acid Derivative

2012 ◽  
Vol 535-537 ◽  
pp. 2287-2290 ◽  
Author(s):  
Yu Hua Gao ◽  
Zhen Fa Liu ◽  
Li Hui Zhang ◽  
Hai Hua Li
Keyword(s):  
Acid Derivative ◽  
Cooling Water ◽  
Water Systems ◽  
Solution Temperature ◽  
Polyaspartic Acid ◽  
Scale Inhibition ◽  
Dynamic Experiments ◽  
Treatment Experiment ◽  
Good Scale ◽  
Inhibition Performance

Static and dynamic experiments were used to evaluate scale inhibition performance of polyaspartic acid derivative (PASP-SEA-ASP). The static experiments showed that the PASP-SEA-ASP had good scale inhibition performance and the scale inhibition rate exceeded 80% when the PASP-SEA-ASP was 2 mg•L-1 and the solution temperature was 40 OC. In the dynamic experiments, almost no scale formed on the heat transfer surface and the fouling thermal resistance decreases extraordinarily with PASP-SEA-ASP treatment experiment compared with the experiment without treatment. The PASP-SEA-ASP could be used in industrial cooling water systems.

Synthesis and Properties of Environmentally Friendly Scale and Corrosion Inhibitor

2014 ◽  
Vol 618 ◽  
pp. 180-183
Author(s):  
Zhen Fa Liu ◽  
Xue Bai ◽  
Li Hui Zhang ◽  
Yan Liang Zhang
Keyword(s):  
Weight Loss ◽  
High Temperature ◽  
Water System ◽  
Cooling Water ◽  
Inhibition Rate ◽  
Polyaspartic Acid ◽  
Ternary Composite ◽  
Scale Inhibition ◽  
Circulating Cooling Water ◽  
Good Scale

Polyaspartic acid (PASP) and a copolymer (AA) of acrylic acid and acrylicester were synthesized. A ternary composite (PASP-AA-DTPMP) was made from PASP, AA and DTPMP. The performances of ternary composite were studied by using static scale inhibition and weight loss of rotating hung steel slices test. When the concentration of ternary composite was 6mg/L, the scale inhibition rate reached 95% and the corrosion inhibition rate reached 97.9%. The results showed that the ternary composite had good scale and corrosion inhibiton performance and was suitable for high temperature and hardness circulating cooling water system.

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%.

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.

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.

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 Corrosion Inhibition Performance of PASP Composite on A3 Carbon Steel in Seawater

2012 ◽  
Vol 164 ◽  
pp. 33-36
Author(s):  
Xin Wang ◽  
Zhan Liu ◽  
Zhen Fa Liu
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibition ◽  
Zinc Sulfate ◽  
Sodium Tungstate ◽  
Inhibition Rate ◽  
Sodium Gluconate ◽  
Polyaspartic Acid ◽  
Inhibition Performance

The polyaspartic acid (PASP) composite was prepared from PASP , sodium gluconate , zinc sulfate , sodium tungstate and phosphate .The corrosion inhibition performance of PASP composite on A3 carbon steel in seawater was studied by using steady polarization. The results showed that PASP composite had good corrosion inhibition performance in seawater . When the concentration of PASP composite was 300 mg/L , the corrosion inhibition rate reached 79.25% .

The Preparation and Performance of a Multifunctional Corrosion Inhibitor in Seawater

2013 ◽  
Vol 773 ◽  
pp. 704-708
Author(s):  
Xin Wang ◽  
Zhen Fa Liu ◽  
Zhan Liu ◽  
Yun Juan Wu ◽  
Li Hui Zhang
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Zinc Sulfate ◽  
Inhibition Rate ◽  
Sodium Gluconate ◽  
Polyaspartic Acid ◽  
Corrosion Tests ◽  
And Performance ◽  
Inhibition Performance

A multifunctional corrosion inhibitor was prepared from polyaspartic acid (PASP), sodium gluconate,zinc sulfate,hydroxyphosphonoacetic acid (HPAA) and benzotriazole (BTA). The performance of corrosion inhibition was evaluated by rotary hanging-piece corrosion tests and steady polarization. The result showed that the corrosion inhibitor was an anodic inhibitor and had good corrosion inhibition performance both on A3 carbon steel and H62 copper in seawater. The corrosion inhibition rate of A3 carbon steel was 93.15% and the corrosion inhibition rate of H62 copper was 93.55% when the concentration of corrosion inhibitor was 150 mgL-1in seawater at 40°C.

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.

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