Correction to Reactivity of BrCl, Br2, BrOCl, Br2O and HOBr Toward Dimethenamid in Solutions of Bromide + Aqueous Free Chlorine

2013 ◽  
pp. 130723133558005
Author(s):  
John D. Sivey ◽  
J. Samuel Arey ◽  
Peter R. Tentscher ◽  
A. Lynn Roberts
Keyword(s):  
Free Chlorine

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.

The Use of Free Chlorine and PolyDADMAC Coagulants to Improve Filtrate Quality and Reduce Dose in Thermally Hydrolyzed Anaerobically Digested Biosolids

2015 ◽  
Vol 2015 (15) ◽  
pp. 3199-3207
Author(s):  
Trung Le ◽  
Ahmed Al-Omari ◽  
Tanush Wadhawan ◽  
Salil Kharkar ◽  
Matthew Higgins ◽  
...  
Keyword(s):  
Free Chlorine

scholarly journals Electrochemical detection of free-chlorine in Water samples facilitated by in-situ pH control using interdigitated microelectrodes

2020 ◽  
Vol 325 ◽  
pp. 128774 ◽  
Author(s):  
Ian Seymour ◽  
Benjamin O’Sullivan ◽  
Pierre Lovera ◽  
James F. Rohan ◽  
Alan O’Riordan
Keyword(s):  
Electrochemical Detection ◽  
Water Samples ◽  
Ph Control ◽  
Free Chlorine ◽  
Interdigitated Microelectrodes

Membrane-based colorimetric flow-injection system for online free chlorine monitoring in drinking water

2021 ◽  
Vol 327 ◽  
pp. 128905
Author(s):  
Ming Zhou ◽  
Tianling Li ◽  
Meng Zu ◽  
Shanqing Zhang ◽  
Yang Liu ◽  
...  
Keyword(s):  
Drinking Water ◽  
Flow Injection ◽  
Free Chlorine ◽  
Injection System ◽  
Flow Injection System

Corrigendum: Photolysis of aqueous free chlorine species (HOCl and OCl–) with 254 nm ultraviolet light

2010 ◽  
Vol 37 (1) ◽  
pp. 179-180
Author(s):  
Yangang Feng ◽  
Daniel W. Smith ◽  
James R. Bolton
Keyword(s):  
Ultraviolet Light ◽  
Free Chlorine

A conductive silver membrane for electrochemical detection of free chlorine in aqueous solution

2021 ◽  
pp. 130724
Author(s):  
Yung–Tai Chiang ◽  
Shih–Cheng Chou ◽  
Bo–Yao Sun ◽  
Pu–Wei Wu
Keyword(s):  
Aqueous Solution ◽  
Electrochemical Detection ◽  
Free Chlorine
Sign in / Sign up

Export Citation Format

Share Document