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Electrochemical generation of free available chlorine in continuous flow process

Isa, M.H. and Halim, A.G.A. and Kutty, S.R.M. and Malakahmad, A. (2010) Electrochemical generation of free available chlorine in continuous flow process. In: International Conference on Sustainable Building and Infrastructure (ICSBI’10), World Engineering, Science and Technology Congress (ESTCON), 15th-17th June, 2010, KLCC, Malaysia.

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Abstract

Chlorine or its compounds are commonly used for water/wastewater disinfection. These are, however, associated with transportation and storage hazards. It would be better to produce the disinfectant in situ to minimise transport and storage risks. This study evaluates the suitability of using titanium-based electrodes for the generation of free available chlorine (FAC) for water/wastewater disinfection in continuous flow process. A series of laboratory experiments were conducted at room temperature (27 ± 1 °C) in a one litre electrochemical cell. A statistical (factorial) design of experiments was adopted to evaluate the effect of operating parameters viz., flow rate, current density and chloride (Cl-) concentration on FAC generation. The optimum pH for FAC production was 5. FAC production was found to increase with increase in chloride concentration & current density and decrease with increase in flow rate. The highest amount of FAC produced was 17.1 mg/L, 27.3 mg/L and 37.2 mg/L at flow rates of 12 mL/min, 8mL/min and 4 mL/min respectively, when the Cl- concentration was 100 mg/L and the current density was 4 mA/cm2.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Electrochemical, Free available chlorine, Continuous flow process, Statistical design of experiments
Subjects:T Technology > TD Environmental technology. Sanitary engineering
Departments / MOR / COE:Departments > Civil Engineering
ID Code:2573
Deposited By: Assoc Prof Dr Mohamed Hasnain Isa
Deposited On:22 Jul 2010 07:14
Last Modified:19 Jan 2017 08:24

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