Original Paper
DOI : https://doi.org/10.4491/KSEE.2016.38.11.596

J Korean Soc Environ Eng. 2016; 38(11): 596-602.

Published online 2016 November 30.

doi: https://doi.org/10.4491/KSEE.2016.38.11.596

Feasibility Study on Potassium Iodide (KI) Sensor for Measuring Total Resiudual Oxidant in Ballast Water

Jae Hyeong Kwon, Heon Jin Lim, Gwan Ho Lee, Hai Don Lee, and Dae Won Kim

Techcross, Central Research Center

Corresponding Author: Email: kdw@techcross.com

Received 2016 July 26;    Accepted 2016 November 04.

Potassium iodide (KI) TRO sensor for measuring total residual oxidant which is an index for disinfection and neutralization in ballast water has been constructed. The results of UV absorption wavelength and absorbance test in various TRO concentrations show high linear correlation (r² = 0.9825) at 350 nm wavelengths and it can be possible to visualize numerical value of TRO concentration (0.1~7.0 mg/L). The result of comparison test according to TRO concentration between the KI based TRO sensor system and the DPD based TRO sensor system showed identical trend. Overall results indicated that the KI TRO sensing system could be applied for continuous TRO concentration measurement in ballast water treatment system.

Keywords : Iodide Tiltration, KI TRO Sensor, Ballast Water Treatment System