Evaluation of corrosion and scaling tendency of polyester textile dyeing effluent, Haridwar, Uttarakhand, India

Madan, Sangeeta; Madan, Richa; Hussain, Athar

doi:10.1007/s11356-022-22057-1

Cited by 1 publication

(2 citation statements)

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“…This system (made of transparent polycarbonate pipes and elements) allowed us to observe the progress of the corrosion process on the tested coupon samples (13). The coupon installation comprises the rotameter (12) and the vent valve (14).…”

Section: Methodsmentioning

confidence: 99%

“…Table 3 presents the variation of calcium ion concentration over time for the four corrosion tests. It should be noticed that when calcium ions concentration increases, water corrosivity decreases since calcium forms scales of CaCO 3, forming a protective coat on the coupon surface to regulate corrosion 12 . The obtained results give a clearer picture that the water corrosivity decreases (calcium ions concentration increases during the process) for experiment no.…”

Section: Figures 3 4 and 5 Show The Changes In Ph Lsi And Rsi Indicat...mentioning

confidence: 99%

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Corrosion process assessment using a novel type of coupon installation

Musik¹,

Wójcik²,

Sekuła-Wybańska³

et al. 2022

Polish Journal of Chemical Technology

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The main aim of this experimental study is to test the novel type of coupon installation. This set-up was used to carry out the corrosion process under aggressive conditions. Moreover, the effect of corrosion inhibitors on the scale-forming tendency was evaluated. The corrosive conditions were defined by using the Langelier Saturation Index (this index is an approximate indicator of the degree of saturation of CaCO3 in water) and the Ryznar stability index (this index is allowed to determine if the liquid sample is aggressive or not). Additionally, the inductively coupled plasma optical emission spectroscopy analysis was used to obtain the iron and calcium ions concentrations in the liquid samples from the tested coupon installation. The corrosion process for the established conditions was also described using the corrosion rate of the tested coupons. The obtained investigation contributes significantly by developing the novel coupon installation and demonstrating the procedure for testing the corrosion process with the application of coupons. This setup and method might be successfully applied for accelerated laboratory tests.

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Section: Methodsmentioning

confidence: 99%

Section: Figures 3 4 and 5 Show The Changes In Ph Lsi And Rsi Indicat...mentioning

confidence: 99%