ZIF-8@s-EPS as a novel hydrophilic multifunctional biomaterial for efficient scale inhibition, antibacterial and antifouling in water treatment

2021 ◽  
Vol 773 ◽  
pp. 145706
Author(s):  
Rui-Xia Gao ◽  
Yan Li ◽  
Ting-Ting Zhu ◽  
Yi-Xiu Dai ◽  
Xiao-Hong Li ◽  
...  
Keyword(s):  
Water Treatment ◽  
Scale Inhibition

scholarly journals A non-phosphorus water treatment agent in water injection system: inhibiting strontium sulfate and dispersing ferric oxide

2016 ◽  
Vol 17 (2) ◽  
pp. 352-361
Author(s):  
Y. M. Liu ◽  
Y. M. Zhou ◽  
Q. Z. Yao ◽  
Z. Wu ◽  
Y. Y. Chen ◽  
...  
Keyword(s):  
Water Treatment ◽  
Ferric Oxide ◽  
Water Injection ◽  
Ammonium Persulfate ◽  
Test Methods ◽  
Standard Test ◽  
Injection System ◽  
Scale Inhibition ◽  
Strontium Sulfate ◽  
Treatment Agent

Due to the increasing temperature in water injection system, scales are sediments that are firmly attached on the metal surface in the industrial equipment. These scales, including calcium and ferric oxide precipitations, can cause heat transfer problems. A non-phosphorus water treatment agent APES/AA/AMPS was synthesized by acrylic acid (AA), ammonium allylpolyethoxy sulphate (APES) and 2-acrylamido-2-methyl propanesulfonic acid (AMPS) with the solution of ammonium persulfate as an initiator. The properties of scale inhibition and dispersion of water treatment agent APES/AA/AMPS were studied by using the commonly used standard test methods. The results showed that APES/AA/AMPS had excellent scale inhibition and dispersion performance. The performance of APES/AA/AMPS on strontium sulfate was 93.3% at the dosage of 9 mg·L−1. When the concentration was 4 mg·L−1, the dispersion of iron oxide was optimal according to the solution transmittance of 13.7%. The morphology and crystallinity changes of strontium sulfate in scanning electron microscopy and X-ray powder diffraction showed that the mechanism of the inhibition on strontium sulfate is adsorption.

Preparation and Performance Research of the Environment-Friendly Corrosion and Scale Inhibitor

2014 ◽  
Vol 881-883 ◽  
pp. 604-609 ◽  
Author(s):  
Yan Min Chen ◽  
Cai Xia Sun ◽  
Hui Wu Xu ◽  
Jin Ying Wu ◽  
Chang Shan Huang
Keyword(s):  
Water Treatment ◽  
Cooling Water ◽  
Scale Inhibitor ◽  
Environment Friendly ◽  
Scale Inhibition ◽  
Circulating Cooling Water ◽  
Treatment Agent ◽  
Simulated Test ◽  
And Performance ◽  
Performance Research

A new non-phosphorus composite water treatment agent m (PASP) : m (PESA) : m (HPMA) : m (BTA) = 8:12:10:5 was developed from polyaspartic acid (PASP), polyepoxysuccinic acid (PESA), hydrolyzed polymaleic anhydride (HPMA) and benzotriazole (BTA). The performance of corrosion and scale inhibition were evaluated by rotary hanging-piece, electrochemical and bubble experiments. The corrosion testing piece was characterized by SEM. The results show that the new environment-friendly composite water treatment agent has good performance of corrosion and scale inhibition. Further dynamic simulated test also indicates that the water treatment agent meet the use demand of circulating cooling water.

Application of 1-hydroxyethylidene-1, 1-diphosphonic acid in boiler water for industrial boilers

2013 ◽  
Vol 67 (7) ◽  
pp. 1544-1550 ◽  
Author(s):  
Bin Zeng ◽  
Mao-dong Li ◽  
Zhi-ping Zhu ◽  
Jun-ming Zhao ◽  
Hui Zhang
Keyword(s):  
Water Treatment ◽  
Carbon Steel ◽  
Corrosion Inhibition ◽  
Test Temperature ◽  
Experimental Results ◽  
Diphosphonic Acid ◽  
Boiler Water ◽  
Inhibition Effect ◽  
Scale Inhibition ◽  
Industrial Boilers

The primary method used for boiler water treatment is the addition of chemicals to industrial boilers to prevent corrosion and scaling. The static scale inhibition method was used to evaluate the scale inhibition performance of 1-hydroxyethylidene-1, 1-diphosphonic acid (HEDP). Autoclave static experiments were used to study the corrosion inhibition properties of the main material for industrial boilers (20# carbon steel) with an HEDP additive in the industrial boiler water medium. The electrochemical behavior of HEDP on carbon steel corrosion control was investigated using electrochemical impedance spectroscopy and Tafel polarization techniques. Experimental results indicate that HEDP can have a good scale inhibition effect when added at a quantity of 5 to 7 mg/L at a test temperature of not more than 100 °C. To achieve a high scale inhibition rate, the HEDP dosage must be increased when the test temperature exceeds 100 °C. Electrochemical and autoclave static experimental results suggest that HEDP has a good corrosion inhibition effect on 20# carbon steel at a concentration of 25 mg/L. HEDP is an excellent water treatment agent.

Study on Synergistic Scale Inhibition Performance of the Rare-Earth Permanent Magnetic Material and Polyaspartic Acid

2011 ◽  
Vol 239-242 ◽  
pp. 707-711
Author(s):  
Zhen Fa Liu ◽  
Han Shuo Liu ◽  
Li Hui Zhang ◽  
Mei Fang Yan
Keyword(s):  
Magnetic Field ◽  
Magnetic Material ◽  
Rare Earth ◽  
Water Treatment ◽  
Magnetic Field Intensity ◽  
Water Hardness ◽  
Polyaspartic Acid ◽  
Inhibition Effect ◽  
Scale Inhibition ◽  
Inhibition Performance

The synergistic scale inhibition effect of rare-earth permanent magnetic material and polyaspartic acid is studied. The performance of synergistic scale inhibition is studied in different magnetic field intensity, water hardness and rate of concentration. Static and dynamic scale inhibition tests show that the two water treatment ways have good synergistic scale inhibition effect. The scale inhibition performance of polyaspartic acid can be increased greatly by the magnetization of water.

Application of Physical Polarization Water Treatment Technology on Circulating Cooling Water System of Power Plant

2013 ◽  
Vol 726-731 ◽  
pp. 606-609 ◽  
Author(s):  
Dan Zeng ◽  
Zhen Yi Fei ◽  
Min Wang ◽  
Ying Li ◽  
Mu Sen Li
Keyword(s):  
Water Treatment ◽  
Power Plant ◽  
Environmental Protection ◽  
Water Conservation ◽  
New Technology ◽  
Water System ◽  
Cooling Water ◽  
Economic Benefits ◽  
Treatment Technology ◽  
Scale Inhibition

Physical polarization Water Treatment (PPWT) is a new technology that takes advantage of polarization electric field polarizing water molecules to achieve the purpose of scale inhibition and dissolution as well as killing bacteria and algae. The PPWT device made by Shandong Langkun Energy Conservation & Environmental Protection Technology Co., Ltd and running in the biomass power plant of Shandong Kaitai Group Co. achieved the effects of scale inhibition and solution which are even more superior to the traditional method of chemical dosing. It brings annual water conservation of 147600 m3 and economic benefits of hundreds of thousands to millions for forsaking chemical dosing for a 15MW power unit. Therefore, Considerable economic and social benefits and the goals required by the state to the enterprises of energy saving, emission reduction and environmental protection are achieved.

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