Understanding H2S uptake dynamics by corroding sewer concrete with fluctuating H2S concentrations

Sun, Xiaoyan, Jiang, Guangming, Bond, Philip and Keller, Jurg (2014). Understanding H2S uptake dynamics by corroding sewer concrete with fluctuating H2S concentrations. In: IWA World Water Congress and Exhibition 2014, Lisbon, Portugal, (). 21 - 26 September 2014.

Author Sun, Xiaoyan
Jiang, Guangming
Bond, Philip
Keller, Jurg
Title of paper Understanding H2S uptake dynamics by corroding sewer concrete with fluctuating H2S concentrations
Conference name IWA World Water Congress and Exhibition 2014
Conference location Lisbon, Portugal
Conference dates 21 - 26 September 2014
Publication Year 2014
Sub-type Published abstract
Open Access Status
Collection year 2015
Language eng
Keyword Concrete
Corrosion
Hydrogen sulfide uptake
Sewer
Q-Index Code EX
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Understanding the H2S transfer from gas phase to concrete sewer pipe surfaces is essential for the prediction of corrosion rate. This study examined H2S uptake from concrete coupons exposed to controlled conditions, i.e. 15 ppm H2S, 22-25ᵒC and 100% relative humidity, for 42 months, which is similar to the conditions of real sewers. H2S accumulation/saturation was observed during H2S uptake by coupons. Increase of H2S uptake rates by 43% and 136% were observed after depriving pre-corroded concrete coupons for two and four hours, respectively. The findings have great implications for the corrosion rate of sewer pipes with fluctuating H2S concentrations.

Document type: Conference Paper
Collection: School of Chemical Engineering Publications
 
Versions
Version Filter Type
Citation counts: Google Scholar Search Google Scholar
Created: Thu, 07 Aug 2014, 17:02:01 EST by Xiaoyan Sun on behalf of School of Chemical Engineering