The effects of a chelating surfactant and different foaming agents on the efficiency of cleaning process waters from a thermomechanical pulp (TMP) mill were studied in a Voith flotation cell. Turbidity measurements and gas chromatography were used to determine the removal extent and characteristics of dissolved and colloidal substances (DisCo). The metal ion content in the process waters before...

This paper reviews the applications of time of flight secondary ion mass spectrometry (TOF-SIMS) used for surface chemical analysis of mineral in the context of froth flotation. A wide range of applications are reviewed, including; interactions of reagents on the surface of mineral phases during flotation separation, determining the effects of various transferred ions from different minerals or...

This paper presents the results of investigations concerning simultaneous removal Al(III), Cu(II), and Zn(II) from dilute aqueous solutions using ion precipitate flotation methods. The effects initial solution pH, surface active substance concentration, gas velocity on flotations’ efficiency course are studied. Experimental discussed in terms physicochemical aspects related to metal salts. indi...

Microalgae have great potential to be a feedstock for producing biofuel. One of the major impediments towards the industrial-scale manufacturing of biofuel from microalgae is the ineffective separation of microalgae from water. In this communication, we first carried out froth flotation tests to harvest freshwater microalgae (Chlorella sp. BR2) and marine microalgae (Tetraselmis sp. M8) from di...

The copper ion is a common metal in the pulp beneficiation industry, and it affects recovery of target minerals. In this study, we investigated interaction mechanism ions with surface sulfidized malachite its effect on flotation. flotation behavior hydrophobicity were studied by microflotation contact-angle tests. experimental results showed that modified suitable concentration was enhanced inc...

This paper describes a simple and highly selective method for separation, preconcentration and spectrophotometric determination of trace amounts of mercury. The method is based on the flotation of an ion-associate of HgI4(2-) and ferroin between aqueous and n-heptane interface at pH 5. The ion-associate was then separated and dissolved in acetonitrile to measure its absorbance. Quantitative flo...