Management of By-Product Created by Lye-Sodium Brine Purification Method Using Carbonization

Abstract

The article presents carbonization as a method of waste management from the brine sodium-lime method. It was compared with the previously obtained results for the lye-sodium method. Within this context, the filtration and washing times were contrasted for treated and non-carbonized samples. For this purpose, potentiometric titration analysis was used to determine the basic components of the precipitation and the by-product brine. A scanning electron microscope with energy-dispersive X-ray spectroscopy and diffractographic analysis was used for morphology analysis, which allowed for the determination of the composition of the tested samples. It was found that despite significant differences in the washing and filtration times, the duration of these processes is shortened after the suspension has been exposed to carbon dioxide. In both cases, the composition allows the waste brine to be recycled into the purification processes, and the mixture of calcium and magnesium compounds becomes an alternative raw material. It was determined that in both methods, it is possible to utilize the formed suspension.