Influence of Buffer Capacity, Chlorine Residual, and Flow Rate on Corrosion of Mild Steel and Copper

Journal - American Water Works Association - Tập 79 Số 2 - Trang 62-70 - 1987
A. Pisigan Rodolfo, J. Edward Singley

Tóm tắt

The corrosion rates of mild steel decreased as buffer capacity was increased with pH at constant alkalinity. The corrosion‐promoting effect of ionic strength, however, appeared to predominate over the buffer action in water systems with relatively high total dissolved solids and chloride levels. The enhanced corrosion of mild steel and copper due to a free chlorine residual was related to the strong oxidation potentials of hypochlorous acid and hypochlorite ions. Corrosion rates were faster with higher flow rates, but other hydraulic and environmental factors also need to be considered when corrosivities are compared.

Từ khóa


Tài liệu tham khảo

Pisigan R.A.Jr.The Development of New Equations for the pH of Calcium Carbonate Saturation and Corrosion in Water Distribution Systems. Dissertation Univ. of Florida Gainesville(1981).

Ahmadi A.Effect of Water Quality Parameters on Corrosion of Mild Steel Copper and Zinc. Doctoral dissertation Univ. of Florida Gainesville(1981).

10.1002/j.1551-8833.1959.tb15797.x

Loewenthal R.E., 1976, Carbonate Chemistry of Aquatic Systems: Theory and Practice.

Pisigan R.A., 1985, Evaluation of Water Corrosivity Using the Langelier Index and Relative Corrosion Rate Models., Materials Performance, 24, 26

10.1002/j.1551-8833.1985.tb05647.x

1976, Standards Methods for the Examination of Water and Wastewater.

10.1039/an9780300391

10.1002/j.1551-8833.1980.tb04516.x

10.1061/JSEDAI.0000306

10.1002/j.1551-8833.1957.tb16946.x

10.5006/0010-9312-14.6.43

10.1002/j.1551-8833.1966.tb01589.x

10.5006/0010-9312-18.5.189

Weast R.C., 1973, Handbook of Chemistry and Physics.

10.1016/0043-1354(82)90093-8

Francis R.The Effect of Chlorine Additions to Cooling Water on Corrosion of Copper Alloy Condenser Tubes.Materials Performance 44 (1982).

Ingleson H.;Sage A.M.; &Wilkinson R.The Effect of the Chlorination of Drinking Water on Brass Fittings. Cited by Larson et al ref. 20.

Risbridger R.The Effect of Chlorination of Drinking Water on Brass Fittings. Cited by Larson et al ref. 20.

10.1002/j.1551-8833.1956.tb20617.x

Wormwell F.&Nurse T.J.The Corrosion of Mild Steel and Brass in Chlorinated Water.Jour. Appl. Chem. 685 (1952).

10.1179/000705965798327967

10.1179/000705971798323784

10.1021/ie50261a011

10.1021/ie50337a017

10.1149/1.2773786

Romeo A.;Skrinde R.; &Eliassen R.Effects of Mechanics of Flow on Corrosion.Proc. ASCE San. Engrg. Div.(1958).

10.1016/0010-938X(76)90123-2

Stumm W.Corrosion Studies.Public Works 78 (1957).

Flynn T.F.The Effect of pH on Corrosion Control Disinfection and Trihalomethane (THM) Formation.Proc. 1984 AWWA Ann. Conf Dallas Texas.

Obrecht M.F.&Quill L.L.Tests Show Effects of Water Quality at Various Temperatures Velocities.Heating Piping and Air Conditioning.105 (1960).

Obrecht M.F.&Quill L.L.How Temperature Velocity of Potable Water Affect Corrosion of Copper and Its Alloys.Heating Piping and Air Conditioning 129 (1961).

Cohen A., 1972, Service Experience with Copper Plumbing Tube., Materials Performance, 11, 48

Thông tin
Thông tin xuất bản

Journal - American Water Works Association

Tập 79 Số 2

62-70

Thông tin tác giả