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Full-Text Articles in Engineering
Electrocoagulation As A Pretreatment For Electroxidation Of E. Coli, William Lynn, Joe Heffron, Brooke Mayer
Electrocoagulation As A Pretreatment For Electroxidation Of E. Coli, William Lynn, Joe Heffron, Brooke Mayer
Civil and Environmental Engineering Faculty Research and Publications
Insufficient funding and operator training, logistics of chemical transport, and variable source water quality can pose challenges for small drinking water treatment systems. Portable, robust electrochemical processes may offer a strategy to address these challenges. In this study, electrocoagulation (EC) and electrooxidation (EO) were investigated using two model surface waters and two model groundwaters to determine the efficacy of sequential EC-EO for mitigating Escherichia coli. EO alone (1.67 mA/cm2, 1 min) provided 0.03 to 3.9 logs mitigation in the four model waters. EC alone (10 mA/cm2, 5 min) achieved ≥1 log E. coli mitigation in all …
Iron-Enhanced Mitigation Of Viruses In Drinking Water, Joseph Aiden Heffron
Iron-Enhanced Mitigation Of Viruses In Drinking Water, Joseph Aiden Heffron
Dissertations (1934 -)
Waterborne viruses are ubiquitous in the environment and present a global threat to public health. Previous research has suggested that iron-based water treatment has promise as a low-cost, non-toxic means of virus mitigation. In particular, zero-valent and ferrous iron have shown evidence of inactivating bacteria and viruses. The purpose of this research was to elucidate the relationship between iron oxidation and virus inactivation and determine if iron-based inactivation can enhance two water treatment processes, electrocoagulation and electrooxidation, for virus mitigation. This research first investigated bacteriophage inactivation due to ferrous oxidation in batch tests using ferrous chloride salt. Ferrous iron oxidation …