process for the recovery and for the separation of pure sodium sulfate

The aim of this study was to focus on the leaching and separation of cobalt from other impurity metals in spent LIBs to recover pure cobalt sulfate for pigment use. 2. Materials and methods2.1. MaterialsThe spent LIBs were subjected to physical treatment which involved discharging, dehydration, drying and crushing steps (Shin et al., 2008).

The Electrosynthesis Company and Ormiston Mining and Smelting Co. developed a process to split sodium sulfate, improving the current efficiency by …

Finely ground Na 2 SO 4 seed crystals are introduced to an aqueous solution which is concentrated at a temperature greater than 60° C. to produce a first fraction consisting of ammonium sulfate with a minor amount of sodium sulfate, and a second fraction …

In this process, magnesium hydroxide is produced by the addition of lime to the brine and the recovery of Na 2 SO 4 from wastewater is accomplished using calcinations of waste sodium sulfate following evaporation [11]. In the dye industry, wastewater produced from dyeing processes contains a large amount of Na 2 SO 4.

1. Introduction. The mining and metallurgical industries produce large amounts of waste during the processing and neutralization of acidic streams [].Sulfuric acid is commonly used for leaching metals and their oxides [2,3] and sodium hydroxide is subsequently used for their precipitation and acid neutralization, as well as for pH control …

Data from the industrial recovery process are limited in open sources. Ecochem Inc., a Du Pont–Conagra partnership, had developed a recovery and purification process that produced a by-product ammonium salt instead of insoluble gypsum cake, and the company intended to sell this as a low-cost fertilizer (Datta and Henry 2006).

The experimental results of the separation of sulfuric acid from sodium sulfate by the membrane electrolysis method have been presented. The anion-exchange membrane Neosepta ACM has been used.

article. Article. Open access. Published: 15 October 2022. An efficiency strategy for cobalt recovery from simulated wastewater by biphasic system with …

During the operation of salt separation of high-brine from a mine using the nanofiltration separation process, the purity of sodium sulfate reached more than …

Results indicate that mixing the lithium sulfate and sodium carbonate solutions both at 2.0 mol/L concentration at 45 °C and 300 rpm agitation rate followed by cooling crystallization of sodium sulfate byproduct produces lithium carbonate with 90% lithium recovery and 99.0% purity.

The most commonly used polyacrylamide gel electrophoresis for quantitative protein analysis is Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). ... (%C). Deferring these two parameters, helps in regulation in the pore size of the gel to yield the best separation result. %T indicates the pore size of the prepared gel ...

What is claimed is: 1. A process for producing potassium sulfate or potassium sulfate and sodium sulfate from potash and a sodium sulfate/water source, comprising the steps of: (a) subjecting a sodium sulfate source to conversion with potash in an aqueous medium to yield glaserite precipitate and a first mother liquor;

1757-899X/478/1/012001. Abstract. In this present work, the selective reduction of nickel laterite was conducted by using 5 to 15 wt. % of sodium carbonate, sodium chloride and sodium sulfate as additives. The 5% wt. of palm shell charcoal was used as the reductant. The selective reduction process for nickel laterite was carried out at 1150°C ...

Process for the recovery and for the separation of pure sodium sulfate and pure ammonium sulfate from aqueous solutions thereof Download PDF Info Publication number US3607141A.

SRB process is more efficient for low concentrated sulphate removal and metal recovery, this process is high predictable, highly controllable.

Resource recovery from such unutilized by-products presents a sustainable waste management approach. This work presents the development and evaluation of a process for sodium-sulphate (Na 2 SO 4) recovery from sulphate-rich bitterns using an integrated process combining cooling crystallization, filtration, and drying as major unit …

Evaporation. Evaporation is a technique used to separate out homogeneous mixtures that contain one or more dissolved salts. The method drives off the liquid components from the solid components. The process typically involves heating the mixture until no more liquid remains. Prior to using this method, the mixture should only contain …

Hydrometallurgical recovery of rare earth elements (REE) from NiMH battery waste can be performed using sulfuric acid leaching followed by selective precipitation as double salt (REENa(SO4)2·H2O) …

alkaline or reducing recovery solution such as a m ixture of sodium hydrate and sodium sulfate. The I 2 crossed the membrane from the aqueous feed solution into the recovery solution, where it was ...

A two-step process of precipitation with CaCl 2 and Na 2 CO 3 following membrane separation was the best for recovering SDS with a yield of 99.7%. Keywords: Micelle enhanced ultrafiltration (MEUF); rare earth elements (REEs); recovery; reuse; sodium dodecyl sulfate (SDS).

2.1. Materials. We used self-made simulated sodium sulfate waste salt (0.3 mol·L −1) containing lithium carbonate; its components are shown in Table 1 [].H 2 SO 4, NaOH, NaCO 3, and other chemicals used in this study were all analytically pure (Meifeng Chemical Instrument Co. Ltd., Hefei, China).The anion exchange, cation exchange, and …

Abstract. Osmotic membrane distillation-crystallization is proposed in this study to recover sodium carbonate, potassium nitrate and sodium sulphate from …

The paper contains a new hydrometallurgical process flow sheet for the recovery of high pure cobalt sulfate solution/salt from waste LiCoO2 cathodic active material generated from lithium ion ...

Huahong Shi & Tiancun Xiao. 4118 Accesses. 1 Citation. Explore all metrics. Abstract. Sulfur recovery is an important industrial process for fossil fuel clean …

A novel process for the separation and recovery of phosphorus and rare earth elements from associated rare earth phosphate ores. ... Adjusting acid leach solution to pH 4.3 with sodium carbonate yielded 93.11 % REEs precipitation, 5.83 % rare earth grade, and 77.64 % total REEs recovery. ... The nitric acid method is commonly used to remove ...

During the crystallization of sodium sulfate from supersaturated solutions a number of transient, metastable crystalline phases differing in the extent of hydration have been recently reported to ...

Finally, the EOs were dried with anhydrous sodium sulfate and weighed, and then stored in a refrigerator at 4 °C. 2.3 In Situ Formation of DES. The extraction process is represented in Fig. 1. 0.5 mL EOs was diluted with 2 mL n-hexane in 15 mL centrifuge tube. Certain amount of quaternary ammonium salt was added to the tube, …

The study reported 97% recovery of pure water from the liquid waste along with high purity calcium sulphate and sodium sulphate (with purities 98.0 and 96.4% respectively).

Semantic Scholar extracted view of "Sustainable and efficient recovery of lithium from sodium sulfate by-product of lithium hydroxide production process using solvent extraction" by Licheng Zhang et al. ... An innovative scheme for the separation of potassium from lithium-bearing solution: A jarosite precipitation method ...

On the other hand, Table 2 shows the consumptions and costs of power, chemicals and water in the recovery process, where 3340 kg of H2O2, 600 kg of sodium sulfate, 100 kg of extractant and 3000 kg of water are needed. In addition, the electricity for the entire Na2SO4 electrolysis and recycling process is calculated as 16535 kW·h.

The pulp obtained from sulfite process is comparatively brighter than the pulp obtained from soda or sulfate process. Unbleached pulp of 32.3 kappa number at 50.3% yield was obtained in a study carried out on cornstalk using 16% of sodium sulfite and sodium hydroxide in 50:50 ratio at 145°C for 30 minutes.

Overarching principles for salting-out extraction are long-established but poorly disseminated. We highlight the opportunity for more widespread application of this technique using the Hofmeister series as a foundational basis for choosing the right salt. The power of this approach is exemplified by the aqueous workup of a highly water …

de Araujo Sampaio, D. et al. Aqueous two-phase (polyethylene glycol+ sodium sulfate) system for caffeine extraction: Equilibrium diagrams and partitioning study. J. Chem. Thermodyn. 98, 86–94 ...

The precipitated double sulfate was later converted to Sm-oxalate, which was subsequently calcined to produce pure Sm 2 O 3. Following Sm separation, Fe was removed through precipitation by raising the pH to 3.0. For Cu and Co recovery, solvent extraction techniques using LIX 84I and Na-CYANEX 272, respectively, were followed.