قائمة الطعام
Read this article. In this study, magnetic nickel ferrite (NiFe 2 O 4) nanoparticles were synthesized via microwave assisted combustion method and these …
The processes such as roasting, magnetic separation, leaching, and sintering are used to reduce or remove the impurities such as sulfur, arsenic, antimony, lead, iron, and tungsten. Usually fluidized roasting is used to change the impurities in the tin concentrate such as sulfur, arsenic, and antimony into gaseous oxides which will be ...
The synthesized composite was magnetic and could be easily separated from the solution by an external magnetic field at the end of the sorption experiment. Based on these findings, the FeO x @CNTs nanocomposite is expected to provide an environmentally-friendly adsorbent with a strong sorption capacity for remediating Sb(III) …
Magnetic nanoparticles (MNPs) have recently attracted increasing attention in water treatment, due to their convenient separation from water with a simple magnetic process [28]. Nonetheless, to our best knowledge, the removal of Sb(III) by using MNPs has never been reported and thus requires investigation.
Abstract. Antimony (Sb) pollution is attracting increasing international concerns. In this work, a novel magnetic nanosphere TiO 2 /SiO 2 /Fe 3 O 4 (TSF) was synthesized for antimony removal. The influence of four amino acids on antimony …
Separation of antimony(V) from iron(III), copper(II), cobalt(II) and cadmium(II) by ion-exchange ... Influence of weak magnetic field and tartrate on the oxidation and sequestration of Sb(III) by zerovalent iron: Batch and semi-continuous flow study. Peng Fan Yuankui Sun Junlian Qiao I. Lo Xiaohong Guan.
Superconducting magnetic separation is a method of mineral separation by a magnetic separator with superconductor as a magnetic system. Its application is mainly with the aid of a superconducting magnetic separator equipment. Following the birth of the first superconducting magnet in 1961, J.D. Bannister of the United States invented …
A new magnetic solid phase extraction (MSPE) method using octyl-immobilized silica-coated magnetic Fe 3 O 4 (C8-Fe 3 O 4 @SiO 2) nanoparticles as the MSPE adsorbent combined with inductively coupled plasma mass spectrometry (ICP-MS) has been developed for speciation analysis of Sb(III) and Sb(V).At pH 5.0, Sb(III) forms a …
Notably, the separation efficiency of magnetic seed increased and then decreased with an increasing flow velocity and the separation efficiency reached a maximum at a flow velocity of 500 mL/min. The maximum separation efficiency of As-containing nZVI and As-containing FeOOH at the flow velocity of 500 mL/min was …
After magnetic separation, the cleaned MnFe 2 O 4 was dried. It was then added to a solution (75 mL) containing 800 mg chromium nitrate, 360 mg 2-aminoterephthalic acid, and 160 mg sodium hydroxide at a loading of 15, 30, or 50 wt% (based on the total weight of chromium nitrate and 2-aminoterephthalic acid).
The magnetic property of Fe 3 O 4 allows for easy separation and recovery of the catalyst from the reaction mixture using an external magnet. The inclusion of antimony (III) bromide imparts catalytic activity to the system, enabling it to facilitate the glycolysis reaction of PET through activation of the carbonyl group in the ester bond.
separation using a permanent magnet. After the collected particles were washed, they were vacuum dried at 60 °C for 12 h to obtain MnFe 2 O 4 @SiO 2. The specic preparation method of MSM is as follows: ... Removal of antimony(III) by magnetic MIL-101(Cr)-NH2 loaded with SiO2: optimization based on response surface methodology and adsorption ...
Introduction. Pulsating high gradient magnetic separation (PHGMS) is now widely applied in the world, for separation of fine weakly magnetic ores such as oxidized iron ores, ilmenite and wolframite and for purification of non-metallic ores such as quartz and feldspar, due to its high reliability, high throughput and low operational cost [1], …
Jia et al. [35] established an environmental friendly and fast sample treatment approach that integrated accelerated microwave digestion, SPE, and magnetic separation into a single step for the ...
Adsorption combined with superconducting high gradient magnetic separation technique used for removal of arsenic and antimony. J Hazard Mater. 2018 …
Antimony (Sb) and arsenic (As) pollution in water has become a major concern in the world due to their toxicity and adverse effects to environmental quality and human health. ... Magnetic iron oxides such as Fe 3 O 4 and Fe 2 O 3 possess advantages of simple preparation, low cost, low toxicity, and easy separation by a simple external …
In a combination with the experiment results and finite element simulation, the separation was seemed to be independent on the magnetic field intensity, and the maximum separation capacities in various conditions were well predicted using the Thomas model (R 2 =0.87-0.99).
A novel and simple method based on selective solid phase extraction (SPE) separation of antimony(III) and highly sensitive inductively coupled plasma mass spectrometric (ICP-MS) detection of total antimony andAntimony(V) in the aqueous phase of the sample is described. Expand
Abstract. The large-scale use of antimony by humans has caused antimony pollution in the ecological environment, which is harmful to microorganisms, animals, …
Aqueous antimony (Sb) pollution from human activity is of great concern in drinking water due to its adverse health effect. Magnetic Fe 3 O 4 particles, with high separation ability from solution, have been considered as a low-cost Sb adsorbent for contaminants. However, the limited adsorption capacity has restricted its practical …
Developing a novel, simple, and cost-effective analytical technique with high enrichment capacity and selectivity is crucial for environmental monitoring and remediation. Metal–organic frameworks (MOFs) are porous coordination polymers that are self-assembly synthesized from organic linkers and inorganic metal ions/metal clusters. Magnetic …
a magnetic separation and magnetic adsorption technology, applied in water/sludge/sewage treatment, other chemical processes, chemistry apparatuses and processes, etc., can solve the problems of reducing adsorption performance, drinking water safety problems, and serious impact on human health and ecological safety, and achieve …
An environmentally friendly and fast sample treatment approach that integrates accelerated microwave digestion (MWD), solid phase extraction, and magnetic separation into a single step was developed for the determination of arsenic and antimony in fish samples by using Fe3O4 magnetic nanoparticles (MNPs).
Recycling Antimony (III) by Magnetic Carbon Nanospheres: Turning Waste to Recoverable Catalytic for Synthesis of Esters and Triazoles | ACS Sustainable Chemistry …
Antimony(Sb) has the properties ... The advantage of magnetic separation of adsorbents is a more effective approach to solid-liquid separation than normal separation methods such as sedimentation ...
A micro-solid phase extraction procedure for the separation and preconcentration of antimony based in the use of magnetic particles covered with silver nanoparticles functionalized with the sodium salt of 2-mercaptoethane-sulphonate (MESNa) is discussed. After separation by means of a magnetic field, the solid phase is directly …
An environmentally friendly and fast sample treatment approach that integrates accelerated microwave digestion (MWD), solid phase extraction, and magnetic separation into a single step was developed for the determination of arsenic and antimony in fish samples by using Fe3O4 magnetic nanoparticles (MNPs). Compared to conventional microwave …
Antimony in Fish Yun Jia †, Huimin ... Magnetic Separation. Figure S1. S-5 3. Conventional Microwave Digestion of Fresh Samples and CRM. 0.2500 g of each fish sample was successively weighed into precleaned Teflon vessels in which 8 mL of HNO 3 and 2.0 mL of H 2 O 2 were added. These vessels were put into
Two magnetic nanoferrite-based absorbents have been successfully developed to remove antimony(III) from water, i.e. Fe 3 O 4 @Fe 2 O 3 @CNs and Fe 2 O 3 @CNs, and these have the capability of ...
This paper describes a design of a Vertical-ring High Gradient Superconducting Magnetic Separation (VHGMS) system for recovery of the magnetic ore and purification of non-metallic minerals. Compared to the conventional design which uses copper wires, using superconducting magnet can help reduce the energy consumption …
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