title: Corrosivity of paper mill effluent and corrosion performance of stainless steel.
abstract: Present study relates to the corrosivity of paper mill effluent and corrosion performance of stainless steel (SS) as a construction material for the effluent treatment plant (ETP). Accordingly, immersion test and electrochemical polarization tests were performed on SS 304 L, 316 L and duplex 2205 in paper mill effluent and synthetic effluent. This paper presents electrochemical polarization measurements, performed for the first time to the best of the authors' information, to see the influence of chlorophenols on the corrosivity of effluents. The corrosivity of the effluent was observed to increase with the decrease in pH and increase in Cl- content while the addition of SO4- tends to inhibit corrosion. Mill effluent was found to be more corrosive as compared to synthetic effluent and has been attributed to the presence of various chlorophenols. Corrosion performance of SS was observed to govern by the presence of Cr, Mo and N contents.
authors.affiliation: a Department of Applied Science & Engineering , Indian Institute of Technology Roorkee , Saharanpur Campus, Saharanpur 247001 , India.
authors.forename: Chhotu
authors.initials: C
authors.lastname: Ram
authors.forename: Chhaya
authors.initials: C
authors.lastname: Sharma
authors.forename: A K
authors.initials: AK
authors.lastname: Singh
mesh_terms: D003343:Corrosion; D007220:Industrial Waste; D010209:Paper; D013193:Stainless Steel / Q000737:chemistry
chemical_list: D007220:Industrial Waste; D013193:Stainless Steel
keywords: chlorophenols; electrochemical tests; immersion test; paper mill effluent; stainless steel