Separation of Selenite from Inorganic Selenium Ions …
Key Words : Selenium ions, Separation, TiO 2 nanoparticle, Selenite Introduction Selenium is a well-known, naturally occurring trace ... core Fe3O4 provides not just only magnetic separation in the presence of external magnetic force but also good stability in aqueous solution at relatively low production cost.10,14 In
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Magnetic Beads for Chemiluminescence Immunoassay
Magnetic bead chemiluminescence immunoassay is a highly sensitive and automated analytical method that combines magnetic separation technology, chemiluminescence technology and immunoassay technology (Figure 1). Magnetic beads play the role of carriers in chemiluminescence immunoassay technology, which can be coupled with antibodies, antigens ...
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Phosphonium ionic liquid conjugated magnetic graphitic …
Request PDF | Phosphonium ionic liquid conjugated magnetic graphitic carbon nitride nanocomposite: An effective sample pretreatment tool for selenium separation and determination | We established ...
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Chapter 2 Magnetic Separation
Magnetic Separation 2.1 Introduction The differences in magnetic susceptibility can be utilized to separate a valuable mineral from its gangue through the magnetic separation method. Similar to other materials, minerals are generally classified into three main categories, namely diamagnetic, paramagnetic, and ferromagnetic.
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Fabrication of dynamic zero-valent iron/MnO2 nanowire …
The selenium separation efficiencies of adsorption and ion exchange techniques are not very high, especially for complex separation system. In addition, recovery and recycling of adsorbent cannot be ignored due to the self-dissolution of nano-adsorbents in solution environment [14], [19]. ... fast magnetic separation, and excellent recycling ...
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Simultaneous speciation of inorganic selenium and tellurium …
Herein, polyaniline functionalized magnetic nanoparticles (MNPs) were prepared and investigated as the adsorbents for the separation and enrichment of inorganic selenium and tellurium species. The prepared Fe 3 O 4 @SiO 2 @polyaniline (PANI) MNPs presents selective adsorption performance for Se IV and Te IV, along with fast adsorption and ...
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Mercapto-functionalized magnetic metal–organic …
Mercapto-functionalized magnetic metal–organic framework for simultaneous removal of inorganic selenium and antimony species. Author links open overlay panel Ningning Sun, ... separation and recovery of selenium from selenium-containing wastewater as well as water bodies, which are essential for the environment and for realising the value of ...
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Understanding Magnetic Separation: Explained with …
Magnetic separation is a process that uses magnets to separate magnetic materials from non-magnetic ones in a mixture. This technique takes advantage of the varying magnetic properties of different substances. The primary component involved in this process is the magnetic separator, a device designed to attract and separate magnetic materials ...
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Mercapto-functionalized magnetic metal–organic …
The coating material is the key factor affecting the adsorption performance of the magnetic adsorbents. Metal-organic frameworks (MOFs) consist of organic ligands and metal centers linked by coordination bonds, feature with high surface area, good chemical thermal stability and adjustable structure [17].MOFs have been demonstrated as effective adsorbents …
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Sol–gel Fe/TiO2 Magnetic Catalysts Applied to Selenium
In this context, the present study describes the synthesis of Fe/TiO 2 magnetic catalysts, obtained through a sol–gel method, and their application in the photocatalytic …
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Crushing and magnetic separation device of selenium drum
The utility model relates to a crushing and magnetic separation device of an abandoned selenium drum, which belongs to the technical field of solid waste recycling and resource utilization, and mainly comprises a crushing device and a magnetic separation device, wherein the crushing device comprises an upper cover, a base and a rotary cutter, and the magnetic separation …
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Separation of Selenite from Inorganic Selenium Ions …
In this work, we propose a simple and quick separation technique to speciate selenite by photocatalytic reduction. Since selenium has multiple oxidation states, it participates in various …
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Dissolved‑selenium removal using magnetic nanoparticles: A …
Adsorption method for dissolved-Se removal is widely applied with cost-saving and operational simplicity. As an outstanding adsorbent, magnetic nanoparticles (MNPs) with high …
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Mechanisms of selenium removal by partially oxidized …
Selenium (Se) pollution of soils, sediments and waters is a global phenomenon. Although Se is a naturally occurring trace element, the major cause of Se release and contamination are human activities such as coal production and combustion, phosphate and sulphide-ore mining, metal processing, oil refining, waste disposal or agricultural irrigation …
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PRIME PubMed | Zero-valent iron (ZVI) facilitated in-situ selenium …
The recovery proportion of the immobilized Se was 34.2 ± 0.1% and 92.5 ± 0.2% through wet and dry magnetic separation with 1 g L-1 ZVI added, respectively. The 16 s rRNA sequencing revealed the variations in the microbial communities in response to ZVI and Se, which the magnetic separation could potentially mitigate in the long term.
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Magnetic Separation
Magnetic Separation, at its core, is the technique of separating ferrous materials from nonferrous and nonmetallic products. Magnetic separation is used to remove unwanted metal contaminants from products where these contaminants could …
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Biomagnetic Recovery and Bioaccumulation of Selenium …
After the magnetic separation, the amounts of SeO 3 2− uptake into and adsorbed SeO 3 2− onto magnetically manipulated cells were evaluated using an atomic absorption spectrophotometer (Shimadzu, AA-6600G). In addition, the magnetically collected cells and the Se concentration were measured at the endpoint for further verification.
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Demonstration of magnetically activated and …
Figure 1 outlines our three-stage process—evaporation, magnetic activation through optical pumping, and magnetic separation—applied to enriching Li-7 for this demonstration. The source is a ...
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Zero-valent iron (ZVI) facilitated in-situ selenium (Se
The recovery proportion of the immobilized Se was 34.2 ± 0.1% and 92.5 ± 0.2% through wet and dry magnetic separation with 1 g L−1 ZVI added, respectively. The 16 s rRNA sequencing revealed the variations in the microbial communities in response to ZVI and Se, which the magnetic separation could potentially mitigate in the long term.
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A novel process for extracting bismuth from high iron …
Magnetic separation was performed with field intensities of 0.1 T and 0.4 T to separate iron in the leaching residue. 70 % of bismuth is placed in the non-magnetic fraction. The non-magnetic fraction of this separation was leached with (1.4 M) H 2 SO 4 + (1 M) NaCl solution to recover bismuth. In optimal conditions, more than 98 % of bismuth in ...
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Polyamine-modified magnetic graphene oxide …
A poly (allylamine)-modified magnetic graphene oxide (PAA-MGO) with a high adsorption capacity for selenium oxyanions was prepared by a simple and facile method at room temperature. Poly (allylamine) (PAA) and magnetic iron oxide particles were synthesized on graphene oxide (GO) by an EDC (N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide)/NHS (N …
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Dissolved‑selenium removal using magnetic nanoparticles: …
Dissolved‑selenium removal using magnetic nanoparticles: A state-of-the-art review. Author links open overlay panel Gang Chen a 1, Feiyin Ge a 1, Yao Wang b 1, ... However, these adsorbents have the disadvantage of difficulty in separation and recovery from the solution. Therefore, it can be considered to combine such adsorbent with MNPs of ...
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A phosphonium ionic liquid conjugated magnetic graphitic
We established an innovative and easy-to-use methodology for selenium (Se) extraction and determination from real water samples utilizing a magnetic nanocomposite …
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Conductometric sensor for viable Escherichia coli and …
A method is described to determine viable populations of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). The method employs aptamer-magnetic separation combined with resistivity based detection. The bacteria were separated by means of aptamer-functionalized magnetic beads. They wer …
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Zero-valent iron (ZVI) facilitated in-situ selenium (Se) …
DOI: 10.1016/j.jhazmat.2024.134591 Corpus ID: 269779765; Zero-valent iron (ZVI) facilitated in-situ selenium (Se) immobilization and its recovery by magnetic separation: Mechanisms and implications for microbial ecology.
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Zero-valent iron (ZVI) facilitated in-situ selenium (Se
This study provides a novel technique to achieve in-situ Se remediation and recovery by combining ZVI reduction and magnetic separation. Keywords: Environmental …
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A newly synthesized graft copolymer for magnetic solid …
A newly synthesized polystyrene-g-polyoleic acid-g-polyethylene glycol graft copolymer (PoleS-PEG) was used as adsorbent in the solid phase microextraction of selenium ions by using electrothermal atomic absorption spectrometry (ETAAS). Neodymium magnet was used for separation of analyte ions. Various analytical parameters such as pH, adsorbent …
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A phosphonium ionic liquid conjugated magnetic …
We established an innovative and easy-to-use methodology for selenium (Se) extraction and determination from real water samples utilizing a magnetic nanocomposite adsorbent (MNC-SPE) aided by an inductively …
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Sol–gel Fe/TiO2 Magnetic Catalysts Applied to Selenium …
Sol–gel Fe/TiO2 Magnetic Catalysts Applied to Selenium Photoreduction. October 2020; Topics in Catalysis 63(11-14) ... Fig. 11 Magnetic separation of non-calcined catalysts containing 2% .
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Zero-valent iron (ZVI) facilitated in-situ selenium (Se) immobilization and its recovery by magnetic separation: …
The toxicity and bioaccumulation of selenium (Se) render it a concerning pollutant; however, its increasing demand necessitates recovery. This study provides novel insights into …
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