公开(公告)号：US20200041476A1

公开(公告)日：2020-02-06

申请号：US16526232

申请日：2019-07-30

Applicant: OZ Optics Ltd.

Inventor： Hyung-Sool Lee

IPC: G01N33/18 ,  G01N27/409 ,  G01N27/327 ,  G01N27/22

Abstract: There is provided a biofilm capacitance microbial electrochemical cell (MEC) sensor to measure organic carbon in water and wastewater rapidly and accurately, represented by the 5-day biochemical oxygen demand (BOD5). The MEC runs at charging (open circuit) and discharging (close circuit) conditions alternately to improve the sensitivity, response time and accuracy. The detectable BOD5 concentrations with the biofilm-capacitance MEC range from 5 to 250 mg/L (R2>0.9). The MEC sensor enables BOD5 measurements at every 2 minutes (1 minute charging and 1 minute discharging), indicating semi-continuous quantification of organic carbon in water and wastewater.

公开(公告)号：US11774432B2

公开(公告)日：2023-10-03

申请号：US16526232

申请日：2019-07-30

Applicant: OZ Optics Ltd.

Inventor： Hyung-Sool Lee

IPC: C02F3/28 ,  H01M8/16 ,  H01M8/24 ,  G01N27/22 ,  G01N27/327 ,  G01N33/18 ,  G01N27/409

CPC classification number: G01N33/1806 ,  G01N27/22 ,  G01N27/3273 ,  G01N27/409 ,  G01N33/1826

Abstract: There is provided a biofilm capacitance microbial electrochemical cell (MEC) sensor to measure organic carbon in water and wastewater rapidly and accurately, represented by the 5-day biochemical oxygen demand (BOD5). The MEC runs at charging (open circuit) and discharging (close circuit) conditions alternately to improve the sensitivity, response time and accuracy. The detectable BOD5 concentrations with the biofilm-capacitance MEC range from 5 to 250 mg/L (R2>0.9). The MEC sensor enables BOD5 measurements at every 2 minutes (1 minute charging and 1 minute discharging), indicating semi-continuous quantification of organic carbon in water and wastewater.