Inhibition Effect of Environment-Friendly Inhibitors on the Corrosion of Carbon Steel in Recirculating Cooling Water

2015 ◽  
Vol 54 (7) ◽  
pp. 1971-1981 ◽  
Author(s):  
Chengjun He ◽  
Zhipeng Tian ◽  
Bingru Zhang ◽  
Yu Lin ◽  
Xi Chen ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Cooling Water ◽  
Environment Friendly ◽  
Inhibition Effect

Inhibition effect of phosphorus-based chemicals on corrosion of carbon steel in secondary-treated municipal wastewater

2013 ◽  
Vol 67 (11) ◽  
pp. 2412-2417 ◽  
Author(s):  
Zhanhui Shen ◽  
Hongqiang Ren ◽  
Ke Xu ◽  
Jinju Geng ◽  
Lili Ding
Keyword(s):  
Carbon Steel ◽  
Municipal Wastewater ◽  
Electrochemical Impedance ◽  
Cooling Water ◽  
Water Systems ◽  
Protective Film ◽  
Steel Electrode ◽  
Inhibition Effect ◽  
Treated Municipal Wastewater ◽  
Alternative Water

Secondary-treated municipal wastewater (MWW) could supply a viable alternative water resource for cooling water systems. Inorganic salts in the concentrated cooling water pose a great challenge to corrosion control chemicals. In this study, the inhibition effect of 1-hydroxy ethylidene-1,1-diphosphonic acid (HEDP), trimethylene phosphonic acid (ATMP) and 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) on corrosion of carbon steel in secondary-treated MWW was investigated by the means of potentiodynamic polarization and electrochemical impedance spectroscopy. The inhibition effect increased with increasing concentration of inhibitors. The corrosion rates of carbon steel were 1.5, 0.8, 0.2 and 0.5 mm a–1 for blank, HEDP, ATMP and PBTCA samples at 50 mg L–1, respectively. The phosphorus-based chemicals could adsorb onto the surface of the carbon steel electrode, form a coat of protective film and then protect the carbon steel from corrosion in the test solution.

Corrosion Inhibition of N,N- diethylammonium O,O′- di (p-chlorophenyl) dithiophosphate for Carbon Steel in HCL Solution

2013 ◽  
Vol 781-784 ◽  
pp. 299-303
Author(s):  
Shu Lan Cai ◽  
Kang Quan Qiao ◽  
Fa Mei Feng
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Carbon Steel ◽  
Corrosion Inhibition ◽  
Mixed Type ◽  
Electrochemical Impedance ◽  
Equivalent Circuit Model ◽  
Inhibition Effect ◽  
Inhibition Process ◽  
Hcl Solution ◽  
Mixed Type Inhibitor

A new corrosion inhibior N,N-diethylammonium O,O-di (p-chlorophenyl) dithiophosphate (EDPDP) has been synthesized and its inhibition effect towards the corrosion of carbon steel in 1.0 molL-1 HCl solution at 25 °C has been investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) methods. The obtained results show that EDPDP is a excellent inhibitor and the inhibition efficiencies exceed 90 %. The polarization measurements reveal that EDPDP is a mixed type inhibitor and the equivalent circuit model of the corrosion inhibition process is obtained by the analysis of EIS data.

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%.

scholarly journals Biofouling on Coated Carbon Steel in Cooling Water Cycles Using Brackish Seawater

2016 ◽  
Vol 4 (4) ◽  
pp. 74 ◽  
Author(s):  
Pauliina Rajala ◽  
Elina Sohlberg ◽  
Outi Priha ◽  
Irina Tsitko ◽  
Henri Väisänen ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Cooling Water ◽  
Coated Carbon ◽  
Water Cycles
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