Chlorine decay and trihalomethane formation following ferrate(VI) preoxidation and chlorination of drinking water. Academic Article

abstract

• This paper presents the effect of preoxidation with ferrate(VI) (FeVIO42-, Fe(VI)) prior to chlorination on chlorine decay and formation of disinfection by-products in filtered raw water from a full-scale drinking water treatment plant. The rate of chlorine decay became significantly faster as the concentration of ferrate(VI) increased. Chlorine degradation followed two first-order decay reactions with rate constants k1 and k2 for fast and slow decay, respectively. Kinetic modeling established the relationships between k1 and k2 and varying dosages of chlorine and ferrate(VI). When ferrate(VI) was used as a pre-oxidant, the levels of trihalomethanes (trichloromethane (TCM), dichlorobromomethane (DCBM), dibromochloromethane (DBCM), and tribromomethane (TBM)) in water samples decreased as the ferrate(VI) concentration increased. The concentrations of these trihalomethanes followed the order TCM>DCBMDBCM>TBM.

authors

• Cizmas, Leslie
• Sharma, Virender

published proceedings

• Chemosphere

author list (cited authors)

• Li, C., Luo, F., Dong, F., Zhao, J., Zhang, T., He, G., Cizmas, L., & Sharma, V. K.

citation count

• 7

complete list of authors

• Li, Cong||Luo, Feng||Dong, Feilong||Zhao, Jingguo||Zhang, Tuqiao||He, Guilin||Cizmas, Leslie||Sharma, Virender K

publication date

• January 2017

publisher

• Elsevier  Publisher

published in

• Chemosphere  Journal

keywords

• Chlorination
• Chlorine
• Disinfection
• Disinfection Byproducts
• Drinking Water
• Ferrate
• First-order
• Halogenation
• Iron
• Kinetics
• Oxidants
• Preoxidation
• Trihalomethanes
• Water Purification

Digital Object Identifier (DOI)

• 10.1016/j.chemosphere.2017.08.084

start page

• 413

end page

• 420

volume

• 187

URL

• http://dx.doi.org/10.1016/j.chemosphere.2017.08.084

user-defined tag

• 3 Good Health and Well-Being