In the Kroll process, one of the ores, such as ilmenite (FeTiO3) or rutile (TiO2), is treated at red heat with carbon and chlorine to yield titanium tetrachloride, TiCl4, which is fractionally distilled to eliminate impurities such as ferric chloride, FeCl3.
The precipitate was washed repeatedly many times by ethanol to eliminate impurities.
Finally, membrane treatment (20 kDa and 1 kDa cutoff) was chosen to eliminate impurities and enriched XOS.
For each gram of calcinated sample, 4 ml of acid mix was added in order to eliminate impurities (calcium, potassium, magnesium, manganese, iron, boron and phosphorous).
In addition, H2 can eliminate impurities such as carbon and oxygen in active region, which would benefit the improvement of the PL intensity [50, 51].
The widespread use of jarosite-type compounds to eliminate impurities in the hydrometallurgical industry is due to their capability to incorporate several elements into their structures.
The freshly harvested leaves were rinsed thrice with tap water and twice with distilled water to eliminate impurities such as dust and soil.
It is held in the last day of funerals and is to eliminate impurities in home after the coffin is sent away.
Several methods can be applied to eliminate impurities such as wet oxidation, acid and thermal treatments, annealing, filtration, ultrasonication, and gas purification to get high-crystalline SWCNTs [46].
This paper studies the problem of economically oriented optimal operation of an ultrafiltration/diafiltration process that is designed to reduce the initial volume of a given process liquor and to eliminate impurities from the product solution in a batch setup.
