Address:
Glafo, Box 5157,
SE-350 05 Växjö
SWEDEN

Visitor's address:
Vejdes plats 3

Tel: +46 10 516 63 50
E-mail: info@glafo.se

You find a map at the
"about Glafo" page.

CONTINUOUS EMISSION MONITOR (CEM) FOR TOTAL FLUORIDE (PR 195)

A prototype CEM for total fluoride has been developed at Glafo. The system is developed from the standard impinger technique used to quantify fluoride emissions. In the CEM prototype a sensor for fluoride (=ISE) is placed in the first impinger. A computer performs the calculations instantly and the results are plotted during measurements.

The use of the CEM is intended for campaigns of process optimisation and empirical modelling, where it is important to follow the emissions for a longer period of time.

The combination ISE for fluoride used in the prototype allows the emissions to be followed for periods up to four hours. After this, the ISE needs to be refilled with electrolyte. One aim for the planned project is to make further developments to extend the operational period to minimum 24 hours.

Another aim is related to the software. During the last year the software was improved to give graphical presentations in real time. For sampling periods of a few hours, the time between measurements was a fraction of a minute. In this existing prototype, the programme uses the ten first measurements to obtain a stable background for the measurements. Now when we need to extend the sampling period this is not practical. With a time period of three minutes chosen between each measurement, this means a long time (thirty minutes) before the first value is plotted. This needs to be improved in the new software.


CURRENT PROJECTS