scholarly journals Monitoring free chlorine and free bromine in aquarium seawater treated by ozone

2012 ◽  
Vol 4 (11) ◽  
pp. 3646 ◽  
Author(s):  
Zhimin Qiang ◽  
Yanjun Jiang ◽  
Weiwei Ben ◽  
Craig Adams ◽  
Huiyu Dong
Keyword(s):  
Free Chlorine ◽  
Free Bromine

Effective henry's law constants for free chlorine and free bromine

1992 ◽  
Vol 26 (1) ◽  
pp. 99-106 ◽  
Author(s):  
Ernest R. Blatchley ◽  
Richard W. Johnson ◽  
James E. Alleman ◽  
William F. McCoy
Keyword(s):  
Free Chlorine ◽  
Henry's Law ◽  
Henry’S Law ◽  
Henry’S Law Constants ◽  
Free Bromine ◽  
Henry's Law Constants

scholarly journals Effects of residual disinfectants on the redox speciation of lead(ii)/(iv) minerals in drinking water distribution systems

2021 ◽  
Author(s):  
Sumant Avasarala ◽  
John Orta ◽  
Michael Schaefer ◽  
Macon Abernathy ◽  
Samantha Ying ◽  
...  
Keyword(s):  
Drinking Water ◽  
Reaction Kinetics ◽  
Distribution Systems ◽  
Water Distribution ◽  
Water Distribution Systems ◽  
Free Chlorine ◽  
Oxidative Transformation ◽  
Drinking Water Distribution Systems ◽  
Drinking Water Distribution ◽  
Free Bromine

This study investigated the reaction kinetics on the oxidative transformation of lead(ii) minerals by free chlorine (HOCl) and free bromine (HOBr) in drinking water distribution systems.

1,3,5-Trimethoxybenzene (TMB) as a new quencher for preserving redox-labile disinfection byproducts and for quantifying free chlorine and free bromine

2018 ◽  
Vol 4 (7) ◽  
pp. 926-941 ◽  
Author(s):  
Stephanie S. Lau ◽  
Ryan P. Dias ◽  
Kayla R. Martin-Culet ◽  
Nicholas A. Race ◽  
Marella H. Schammel ◽  
...  
Keyword(s):  
Disinfection Byproducts ◽  
Free Chlorine ◽  
Residual Chlorine ◽  
Free Bromine

1,3,5-Trimethoxybenzene can be used to quench residual chlorine and bromine without altering disinfection byproducts that are reactive toward traditional quenchers.

Applications of 1,3,5-trimethoxybenzene as a derivatizing agent for quantifying free chlorine, free bromine, bromamines, and bromide in aqueous systems

2019 ◽  
Vol 11 (43) ◽  
pp. 5521-5532 ◽  
Author(s):  
Ryan P. Dias ◽  
Marella H. Schammel ◽  
Keith P. Reber ◽  
John D. Sivey
Keyword(s):  
Drinking Water ◽  
Ballast Water ◽  
Free Chlorine ◽  
Aqueous Systems ◽  
Recreational Waters ◽  
Cleaning Products ◽  
Derivatizing Agent ◽  
Free Bromine

Free chlorine and free bromine (e.g., HOCl and HOBr) are employed as disinfectants in a variety of aqueous systems, including drinking water, wastewater, ballast water, recreational waters, and cleaning products.

Reactions of α,β-Unsaturated Carbonyls with Free Chlorine, Free Bromine, and Combined Chlorine

2021 ◽  
Author(s):  
Emily L. Marron ◽  
Jean Van Buren ◽  
Amy A. Cuthbertson ◽  
Emily Darby ◽  
Urs von Gunten ◽  
...  
Keyword(s):  
Free Chlorine ◽  
Unsaturated Carbonyls ◽  
Free Bromine

Efficacy of a combined system of copper and silver and free chlorine for inactivation of Naegleria fowleri amoebas in water

1995 ◽  
Vol 31 (5-6) ◽  
pp. 119-122 ◽  
Author(s):  
J. M. Cassells ◽  
M. T. Yahya ◽  
C. P. Gerba ◽  
J. B. Rose
Keyword(s):  
Synergistic Effect ◽  
Exposure Time ◽  
Silver Ions ◽  
Free Chlorine ◽  
Log10 Reduction ◽  
Naegleria Fowleri ◽  
Combined System ◽  
Water Ph ◽  
Nægleria Fowleri ◽  
Time Required

Electrolytically generated copper and silver ions (400:40 and 800:80 μg/l) were evaluated, separately and combined with 1.0 mg/l free chlorine, for their efficacy in reducing the viable numbers of Naegleria fowleri amoebas in water (pH 7.3 and 23-25°C). Inactivation rates (k = log10 reduction/min) and T99 values (exposure time required to achieve a 99% or a 2 log10 reduction) of the disinfectants were determined. Copper and silver alone, at ratio of 400:40 to 800:80 μg/l caused no significant inactivation of N. fowleri even after 72 hours of exposure (k = 0.00017 and 0.00013, respectively). Addition of 1.0 mg/l free chlorine to water which contained 400:40 or 800:80 μg/l copper and silver resulted in enhanced inactivation rates (k = 0.458 and 0.515, respectively) compared to either chlorine alone (k = 0.33) or the metals alone. Water containing 800:80 μg/l copper and silver with 1.0 mg/l chlorine showed a T99 value of 3.9 minutes, while chlorine alone showed a T99 of 6.1 minutes. Enhanced inactivation of N. fowleri by a combined system of free chlorine and copper and silver may be attributed to the different mechanism that each disinfectant utilizes in inactivating the amoebas, and may suggest a synergistic effect.

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