Cobalt-nickel bimetallic sulfide (NiS 2 /CoS 2) ... lots of obstacles owing to their poor electronic conductivity and huge volume expansion during the repeated uptake and removal of sodium ions. ... Nickel nitrate hexahydrate (99.9 %), trisodium citrate dehydrate (99.9 %), sodium sulfide (99.5 %), sublimed sulfur and dopamine …
A Metrosep C4-250/4.0 column was used for cobalt, nickel and the exchanged sodium Na + ions analysis and the mobile p hase was a mixture of Nitr ic ac id (0.9 mM) a nd
The Bureau of Mines has evaluated solvent extraction and pre- cipitation techniques to remove and recover cobalt and nickel from zinc sul- fate solution prior to zinc electrolysis. Prepared zinc sulfate solutions containing about 190 gpl of zinc and 50 ppm of both cobalt and nickel were treated using various combinations of complexing reagents ...
Guo et al. (2017) analyzed the potential of the species to mitigate cobalt and nickel in water and found removal efficiencies of 58.6 and 56.2%, respectively. Miranda et al. (2020) report this ...
Although different morphologies of cobalt–nickel bimetallic materials have been used for PMS activation, previous research works have mainly emphasized on morphology and properties, and the mechanism of cobalt–nickel bimetallic synergistic activation of PMS has not received sufficient attention. ... The removal efficiency of …
ABSTRACT. A new process has been developed jointly by CSIRO and CESL, for separating cobalt from nickel in an impure leach solution. The process uses synergistic solvent extraction (SSX) with commercially available reagents, but in a novel and efficient manner using kinetic factors. It is applicable to dilute nickel leach liquors containing ...
cobalt, nickel and manganese from spent lithium-ion batteries ef uent . N. Conte *, J.M. G ... adsorption of cobalt, reaching removal rates of Co. 2 + over 90% in 15 min [26]. Abebaw Mengistie ...
One of the most important steps in the zinc processing industries is the removal of impurities. In this step, cobalt, nickel and cadmium are removed from the leach solution by hot and cold purification, respectively. In this research, the effective parameters on cold purification reactor of Dandi zinc smelting plant (Zanjan—Iran) such as …
1. Introduction. Nickel (Ni) a silver white, hard and ductile metal, is the 24th most abundant element in the Earth's crust having an estimated concentration of …
Reyad Journal of the University of A. Al Dwairi, Chemical Aiman E.and Technology Al-Rawajfeh Metallurgy, 47, 1, 2012, 69-76 REMOVAL OF COBALT AND NICKEL FROM WASTEWATER BY USING JORDAN LOW-COST ZEOLITE AND BENTONITE Reyad A. Al Dwairi1, Aiman E. Al-Rawajfeh2 Tafila Technical University, P.O. Box 179, Received …
Removal of cobalt a nd nickel from aq ueous sol utions wi th manga nese diox ide sorbe nt . produced by in-situ precipit ation . M. Kaipiainen, R. Koivula, R. Harjula.
Reyad Journal of the University of A. Al Dwairi, Chemical Aiman E.and Technology Al-Rawajfeh Metallurgy, 47, 1, 2012, 69-76 REMOVAL OF COBALT AND NICKEL FROM WASTEWATER BY USING JORDAN LOW-COST ZEOLITE AND BENTONITE Reyad A. Al Dwairi1, Aiman E. Al-Rawajfeh2 Tafila Technical University, P.O. Box 179, Received …
Removal of cobalt a nd nickel from aq ueous sol utions wi th manga nese diox ide sorbe nt . produced by in-situ precipit ation . M. Kaipiainen, R. Koivula, R. Harjula.
At optimum experimental conditions of pH 6.0 and P/M 5.0, the nickel removal efficiency reaches at 99.9% and cobalt removal efficiency goes to 96.4%. Both nickel and cobalt removal efficiencies decreased as the adding salt concentration increases. During 12 h of the ultrafiltration process, the decline of membrane flux was …
The solution is heated to 90° C, and then copper sulfate and arsenic trioxide are added, with coarse zinc (+65 mesh) being added shortly thereafter. Zinc dust is added in batches until the cobalt is <10 ppm. Once the cobalt has dropped to this level, the nickel is assumed to be less.
Tanhaei, B. et al. Simultaneous removal of aniline and nickel from water by micellar-enhanced ultrafiltration with different molecular weight cut-off membranes. Sep. Purif. Technol. 124, 26–35 ...
Abstract In this paper, the removal of nickel and cobalt by decylic acid from aqueous sulfate solution was carried out at 25°C. Synergistic extraction of cobalt and nickel with the mixed extractants of decylic acid and Cyanex 921 was also conducted to efficiently separate these metals. The synergistic effect on the extraction of Ni(II) by …
@article{Li2023CoreshellSC, title={Core-shell structured cobalt–nickel bimetallic sulfide with dual redox cycles to activate peroxymonosulfate for glyphosate removal}, author={Jie Li and Zhuobiao Ni and Qiongzhi Gao and Xixian Yang and Yueping Fang and Rongliang Qiu and Mingshan Zhu and Shengsen Zhang}, journal={Chemical Engineering Journal ...
The biomass of Aspergillus flavus was modified by calcium chloride to achieve a bioadsorbent for treating nickel, cobalt, and zinc ions from aqueous solutions. The information of pH, bioadsorbent dose, contact time, and temperature effect on the removal efficiency are presented. The data of Freundlich and Langmuir isotherm and pseudo-first …
This functionality was used for the removal of these impurities from a cobalt stream in the Bulong Nickel flowsheet and has also been piloted for several applications for purification of cobalt electrolytes [93,94,95,96,97]. Levels of the targeted contaminants can be consistently reduced to as low as <0.1 mg/L using fixed-bed systems.
In this work, a mixture of natural zeolitic tuff (Z) and bentonite (B) from Jordan were used to treat wastewater from cobalt and nickel. The results showed that bentonite type performed better efficiency in heavy metal removal than the zeolite type, while the 50/50 Z/B mixture type shows the highest percentage removal.
In contrast to nickel and cadmium, cobalt removal needs antimony to catalyze its reduction. The initial cobalt removal rate increased with increasing temperature, zinc dust dosage, and antimony dosage and decreased with increasing pH. The cobalt cementation is a first order reaction with an activation energy of 56.1 kJ/mol …
In this study, phytoremediation methods used in the removal of common lead, cobalt, nickel, and cadmium heavy metals and hyperaccumulator plants will be …
In this study, chitosan-magnetite nanocomposite (CMNC) was synthesized via coprecipitation method to remove nickel and cobalt from aqueous solutions. The physicochemical properties of the synthesized CMNC were investigated by various techniques, including FESEM, TEM, XPS, FTIR, XRD, and VSM. The electron …
Cobalt ore. Cobalt extraction refers to the techniques used to extract cobalt from its ores and other compound ores. Several methods exist for the separation of cobalt from copper and nickel. They depend on the concentration of …
Cobalt removal; Cobalt/nickel residue; Hydrazine hydrate; Download conference paper PDF. Introduction. Zinc is a common heavy metal. It is widely used in the electroplating industry and machinery manufacturing industry because of its ability to form protective films on the surface at normal temperature and to form alloys with many …
Nickel is often found to co-exist with cobalt ions in wastewater stream, with these two metals having similar chemical properties due to their adjacent position in the periodic table. Thus, a lot of work has been focused on the removal and separation of nickel from cobalt using the ELM technique.
The ability of Na-activated bentonite to remove Ni2+ and Co2+ from aqueous solutions at room temperature (22 ± 1°C) was studied under various experimental conditions. The parameters studied were solid-to-liquid ratios and initial cation concentrations. Experiments involved the behavior of bentonite vs. Ni and Co separately …
