This opinion review explores the microbiology of tellurite, TeO32− and selenite, SeO32− oxyanions, two similar Group 16 chalcogen elements, but with slightly different physicochemical properties that lead to intriguing biological differences. Selenium, Se, is a required trace element compared to tellurium, Te, which is not. Here, the challenges …Web
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The present article extensively reviews the eco-friendly production of metalloid nanoparticles, namely made of selenium (SeNPs) and tellurium (TeNPs), using various microorganisms, such as...Web
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Selenium (Se)andtellurium (Te)arechalcogenideelements (i.e. they belong to the oxygen column in the periodic table) that have been classi ed as energy critical elements by the …Web
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Discovered by Berzelius in 1817, who found it associated with tellurium (named for the earth). Production. Selenium is found in a few rare minerals such as crooksite and clausthalite. In years past it has been obtained from flue dusts remaining from processing copper sulfide ores, but the anode metal from electrolytic copper refineries now ...Web
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machining alloys; and bismuth and tellurium in lead-free brasses. Sulfur dioxide can be used as a replacement for selenium dioxide in the production of electrolytic manganese metal, but it is not as energy efficient. The selenium-tellurium photoreceptors used in some plain paper copiers and laser printers have been replaced byWeb
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With a telluride-type gold ore flotation concentrate as the research object, the Na2S + NaOH collaborative leaching process was applied to selectively separate tellurium before the cyanide leaching of gold and silver. The effects of process parameters including the type of leaching agent, the amount of leaching agent, liquid-solid ratio, …Web
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Tellurium (Te) is one of the chalcophile elements that belong to group 16 in the periodic table and has an electronic configuration of [Kr]4d 10 5s 2 5p 4.There are eight stable isotopes from 120 Te to 130 Te. It is expected that 126 Te is enriched relative to other isotopes because of the decay of the short-lived nuclide tin 126 (half-life: 2.345 × 10 5 …Web
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Tellurium has 52 protons in its nucleus, and an atomic weight of 127.6 grams per mole, becoming the fourth element in Group 16, the chalcogen family, also known as the oxygen (O) family, with this element, sulfur (S), selenium (Se), tellurium (Te), and the radioactive polonium (Po) belonging to it.Web
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The fungi Aureobasidium pullulans, Mortierella humilis, Trichoderma harzianum and Phoma glomerata were used to investigate the formation of selenium- and tellurium-containing nanoparticles during growth on selenium- and tellurium-containing media. Most organisms were able to grow on both selenium- and tellurium-containing …Web
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Statistics and information on the worldwide supply of, demand for, and flow of the mineral commodities selenium and tellurium. Commercial quantities of selenium are recovered …Web
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from sulfur to selenium to tellurium.27 The decrease in polymer photoluminescent quantum yield (PLQY) when moving down Group 16 is indicative of more rapid ISC with heavier chalco-gens. The study compares three polymers (1) with identical solubilizing side chains: poly(3-hexylthiophene) (P3HT), poly(3-Web
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Physico-chemicalpropertiesofselenium–tellurium alloys across the scales Luke D. Geoffrion and Gregory Guisbiers´ * Selenium and tellurium are both energy critical elements as defined by the American Physical Society and the Materials Research Society. When mixed together, both elements form an alloy. The size- and shape-Web
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Selenium nanoparticles possess good adsorptive and biological activity because of interaction between nanoparticles and different functional groups (C–O, C–N. NH and COO–) of proteins 6.Web
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The results obtained show that the scheme for the bacterial synthesis of extracellular Se NPs proposed in [27] is applicable, at least, for other Azospirillum species.. The measured values of zeta potentials of these Se NPs were found to be −18.5 mV.Similar negative values of zeta potentials were reported earlier for biogenic Se NPs synthesised …Web
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This study investigated the adsorption of gallium onto chemical and biogenic elemental tellurium nanoparticles. Biogenic elemental tellurium nanoparticles (BioTeNPs) were found to be a good adsorbent for the removal and recovery of gallium from aqueous solution with an adsorption capacity of 74 mg of Ga 3+ per g BioTeNPs. The adsorption …Web
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EPS make direct contact and interact with the metals and nanoparticles before the metals enter the cells and thus play a vital role in protecting the microbial cells [7,8,9,10,11]. An intimate association of EPS with biogenic nanoparticles (NPs), e.g., those of selenium, tellurium, silver, and palladium NPs, has also been reported [12,13,14,15].Web
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EEM fluorescence spectra of (A) soluble EPS and (B) Se- or (C) tellurium-bound EPS obtained from P. glomerata culture medium. Phoma glomerata was grown in AP1 liquid media amended with 1 mM Na 2 SeO 3 or Na 2 TeO 3 for 30 days at 25°C in the dark on an orbital shaking incubator at 125 rpm. Colour intensities are in arbitrary units, …Web
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Different Se to Te ratios (1:1, 2:1, 4:1 and 1:2) were tested to elucidate the effect of the presence of Se on TeO 32- reduction. Incubations with SeO 32- (10 mg Se L …Web
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Akahama, Y., Kobayashi, M. & Kawamura, H. Pressure-induced superconductivity and phase transition in selenium and tellurium. Solid State Commun. …Web
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Research and Industrial Application of Selenium and Tellurium … 123. Fig. 2. Saleable selenium and tellurium products. tellurium dioxide (Fig. 3), tellurium is co-extracted with copper in the autoclave acidic pressure leach. The selenium is insoluble with gold and silver; therefore, it remains in the leach residue.Web
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During soda roasting, copper which occurs as Cu 4 SeTe in the slime was oxidized to CuO and Cu 3 TeO 6, while selenium and tellurium were oxidized to Ag 2 SeO 4 and Cu 3 TeO 6, ... (EPS) extraction method to the tellurite reducing sludge recovered up to 78% of the tellurium retained in the granular sludge. This study demonstrates for the …Web
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Selenium (Se) and tellurium (Te) are chalcogen metalloids belonging to group 16 of the periodic table. ... EPS characterization and microbial community analysis. Process Saf. Environ. (2019) ... The used SLMM was identified with the good stabilization of selenium and the low possibility of secondary pollution caused by sulfur spills by …Web
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Tellurium (Te) is a member of the chalcogen group, which includes oxygen, sulphur, selenium (Se) and polonium [ 1 ]. The first three members of the chalcogen group have crucial functions in biochemistry, biology and medicine, whereas Te is a strange element with no apparent role in biological systems. Moreover, it belongs to the group of …Web
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Selenium (Se) and tellurium (Te) contaminations in soils and water bodies have been widely reported in recent years. Se(IV) and Te(IV) were regarded as their most dangerous forms. Microbial treatments of Se(IV)- and Te(IV)-containing wastes are promising approaches because of their environmentally friendly and sustainable …Web
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About this book. Our knowledge of the chemistry of selenium and tellurium has seen significant progress in the last few decades. This monograph comprises contributions from leading scientists on the latest research into the synthesis, structure and bonding of novel selenium and tellurium compounds. It provides insight into mechanistic studies ...Web
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Elemental selenium (Se) and tellurium (Te) are kind of chalcogen metalloids with unique p-type semiconductor characteristics. ... and Te(IV) bioreduction processes. We further extracted the EPS from CNZ-1 cells to evaluate the ability of extracellular proteins in reducing Se(IV) and Te(IV). Results showed that only slight colour change could be ...Web
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These findings are relevant to remedial treatments for selenium and tellurium and to novel approaches for selenium and tellurium biorecovery. Growth (colony expansion) of test fungi on 1 mM or 5 ...Web
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Selenium placed at 67° angle projection between di-oxide dimension. So the planarity of the SeO 2 remains same at 360° rotation (Fig. 8 ). Docking calculation was performed for 100 best pose ...Web
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The synthesis and assembly of nanoparticles using green technology has been an excellent option in nanotechnology because they are easy to implement, cost-efficient, eco-friendly, risk-free, and amenable to scaling up. They also do not require sophisticated equipment nor well-trained professionals. Bionanotechnology involves …Web
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Selenium and tellurium are metalloids with chemical properties similar to sulfur, also belonging to Group 16 of the Periodic table, and both commonly occurring in − II, + IV and + VI oxidation states (Eswayah et al. 2016).Selenium and tellurium, and their related compounds, have drawn significant attention in recent years due to their …Web
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Selenium and tellurium nanospheres can be produced by lactic acid bacteria. The bacteria can differentiate the selenium and tellurium when the medium contains both selenite and tellurite ...Web
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Biomineralization of tellurium and selenium-tellurium nanoparticles by the white-rot fungus Phanerochaete chrysosporium. Author links open overlay panel Erika J. Espinosa-Ortiz a, Eldon R. Rene a, ... The EPS production by A. niger increased in the presence of these elements along with changes in the polysaccharide and protein …Web
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In this communication, biogenic selenium nanoparticles (Se NPs) were obtained via selenite (SeO 3 2-) reduction by the bacterium Azospirillum thiophilum (strain VKM B-2513) for the first time, using an original methodology for obtaining extracellular NPs. Dynamic light scattering (DLS) and transmission electron microscopy (TEM) showed the …Web
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Green Synthesis of Selenium and Tellurium Nanoparticles: Current Trends, Biological Properties and Biomedical Applications by Marjorie C. Zambonino 1, Ernesto Mateo Quizhpe 1, Francisco E. …Web
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The present article extensively reviews the eco-friendly production of metalloid nanoparticles, namely made of selenium (SeNPs) and tellurium (TeNPs), …Web
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Selenium (Se) and tellurium (Te) are chalcogenide elements (i.e. they belong to the oxygen column in the periodic table) that have been classified as energy critical …Web
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