ion flotation patentes

Water scarcity is a global issue that is expected to continue increasing in importance in the coming decades. Reclaimed water is one important source available to meet future needs. The reclamation process for wastewaters, particularly from industrial sources, involves the need to remove low-level contaminants. Here we report the …

The experimental conditions for the nickel ion flotation experiments are presented in Table 1.The bubble size and energy input are measured as presented in Safari et al., (2016).During the nickel ion flotation experiments, four samples of tailing were collected at the various determined times (Table 1).The nickel ion concentration in the …

HLB of ethers impact on selectivity of Zn(II) and Cd(II) in ion flotation. Kozlowski et al. [26] compared the effectiveness of ion flotation and transport across polymeric inclusion membranes for Zn(II) and Cd(II) recovery fr om aqueous solutions. The experiments were carried out for aqueous chloride solutions containing an equimolar …

Ion flotation is an efficient method to remove or recovery of heavy metals, rare and precious metal ions, and organic pollutants from aqueous solution. The added surfactants served as collectors ...

Common technologies for metal removal from wastewaters, such as precipitate flotation, chemical precipitation, physicochemical adsorption, ion exchange, membrane filtration, catalytic degradation and electrochemical separation, have been studied and widely applied in practical operations (Zouboulis and Matis, 1987; Huang …

Copper ion removal in the sodium dodecylsulfate -Cu ion flotation system. Air flow 20 ml/min, solution volume = 650 ml. Initial copper and SDS concentrations were 2.9 Â 10 À 4 and 5.8 Â 10 À 4 ...

Ion flotation was originally used for pre-concentrating precious metals from dilute solutions. To date, it has attracted widespread attention in many fields due to its low energy requirements ...

Ion flotation has shown great promise in the effective metal ions removal from industrial wastewater. However, one limitation in its application for industrial purposes is the requirement of a high concentration of collector for achieving maximum ion removal percentage. Previous research has primarily focused on using a stoichiometric ratio of ...

Ion flotation studies were conducted to investigate the selectively removing several metals from waste waters. Various parameters such as airflow rate, surfactant and frother concentrations and water chemistry were tested to determine the optimum flotation conditions. Anionic sodium dodecyl sulfate (SDS) and cationic hexadecyltrimethyl …

In the original studies, ion flotation was mostly used for pre-concentrating precious metals from dilute solutions. To date, the ion flotation method has also been applied for wastewater and water treatment, 10–12 recovery of precious metals, 13,14 pre-concentrating of rare earth elements, 15,16 and selective separation of multicomponent …

Ion flotation is a separation technology for recovering and removing metal ions from dilute aqueous solutions. In this process, an ionic collector is utilized to transport non-surface active colligend ions of the opposite charge from a bulk solution to …

Abstract. The technique of ion flotation provides a simple physical method for concentrating the ions present in very dilute liquors. The ions in the liquor, with the aid of a suitable surfactant, adsorb at the surface of rising air bubbles, and report to a froth product. The purpose of this article is to provide the mineral processing industry ...

The ion flotation method has been applied for wastewater and water treatment, recovery of precious and platinum group metals, preconcentrating of rare …

The ion flotation method has been applied for wastewater and water treatment, recovery of precious and platinum group metals, preconcentrating of rare earth elements, selective separation of ...

2.2.3. Ion flotation system. In a model batch experiment, 0.01 M of the N-octanoyl-cys or N-octanoyl-taurine surfactant was dissolved (with heating around 65 C while stirring) in a 5 mg/L solution of a particular cation, such as Ca, Sr, Se, La, As, Cd, Cr, Pb, La, Mg, Fe, and Hg, containing 0.1 M NaOH (added to maintain the solution pH at …

This review focuses on the applications of ion flotation in wastewater treatment, mineral beneficiation, such as rare precious metal recovery, and hydrometallurgy, such as pre-concentrating of...

Ion flotation 1261 The Effect of Collector Concentration Galvin et al. [12] coined the phrase, ultimate recovery curve, to denote the relationship between the maximum possible recovery of a species and the concentration of the collector used. The ultimate recovery curve, equivalent to an ideal separation curve, provides a sound basis …

Ion precipitation flotation technology was demonstrated to be an efficient method for the separation of valuable metals from low-concentration solution. However, the selective separation of three metals from mixing solution is a great challenge, and highly selective reagents are the key to polymetal …

Ion flotation is the best method for removal of heavy metals from wastewaters. A recovery of Zn 2 + of more than 92% and a recovery of 88% Ni 2 + were achieved. Recovery increases by increasing agitating speed, water recovery and flotation time. Zn 2 + preferential removal is proportioned to ionic radius.

Ion flotation is a separation technology for recovering and removing metal ions from dilute aqueous solutions. In this process, an ionic collector is utilized to transport non-surface active ...

Ion flotation is a separation technique for removing or recovering metal ions from dilute aqueous solutions [ 6, 7, 8, 9, 10, 11, 12 ]. In this technique, …

Ion flotation is an efficient method to remove or recovery of heavy metals, rare and precious metal ions, and organic pollutants from aqueous solution. The added surfactants served as collectors ...

As seen in Fig. 1, Fig. 2, high flotation recovery of KCl crystals can be achieved using both cationic (dodecylamine hydrochloride) and anionic (sodium dodecylsulfate) collectors but NaCl crystals cannot be floated with either of these collectors.As mentioned above, in brines the double layer thickness is very thin at salt …

Abstract. Ion flotation is a separation technology for recovering and removing metal ions from dilute aqueous solutions. In this process, an ionic collector is …

Extractive metallurgy has recently turned its attention to waste treatment for the recovery of precious metals through innovative metallurgical processes, such as ion flotation. This work studied the influence of several chemical and physical factors, such as the concentration of xanthate [x], frother agent [e], dithiophosphate [xl], pH, superficial …

Example 5 Comparison Between the Copper(II)-Ammonia Complex Ion and Single Use of Copper Ion or Ammonium Ion. Flotation Experiment. 2.0 g of malachite and 35 mL of deionized water were poured into the flotation cell and mixed for 1 min to produce a slurry, which was adjusted to pH 7. A comparative experiment, in which four groups …

The ion flotation of copper, nickel, and cobalt using the biosurfactant surfactin. Research. Open access. Published: 11 March 2023. Volume 3, article number …

Ion flotation was carried out in an XFG type flotation machine (Wuhan Exploration Machinery Plant, China) with a 50 mL flotation cell with a stirring speed at 1500 r/min. First, 40 mL of deionized water was added to the flotation cell. Next, a pH regulator was added and stirred for 2 min, and then, the metal ion solution was added and stirred ...

Ion flotation is an effective method for the removal of metal ions, which is on basis of enhancing the hydrophobic of metal species by use of surfactants and subsequent removal of these ...

Ion flotation was originally used for pre-concentrating precious metals from dilute solutions. To date, it has attracted widespread attention in many fields due to its low energy requirements, simplicity, rapid operation, small space requirements, suitability for a variety of target ions at various levels, small volume of sludge, low residual …

The control of pH at 6.0 during the ion flotation of silver helps to improve the separation, compared to pH values of 7.0 and 8.0. The kinetic constant of apparent flotation k (min-1)s maintains a ...

The recycling of spent lithium-ion batteries (LIBs) has attracted great attention, mainly because of its significant impact on resource recycling and environmental protection. Currently, the processes involved in recovering valuable metals from spent LIBs have shown remarkable progress, but little attention has been paid to the effective …