Welcome To Our Mining Equipment Production Base!
Selenium Sources and Treatment

Selenium in wastewater is a problem for some refineries Se treatment: not much attention until recently Current limits vary by location and permit Selenium Refinery Implications Background Page 11 Selenium Sources and Treatment Carbon (84 - 87 Wt%) Hydrogen (11 - 14 Wt%) Sulfur (0 - 5 Wt%) Nitrogen (0 - 0.2 Wt%) Other Elements (0 - 0.1 Wt%)

Selenium as a Potential Treatment for Moderately-ill ...

The role of Selenium (Se) as a trace element involved in many biological processes and reactions is well established in various organisms. Particularly, Selenium is known to have anti-viral, anti-oxidative, cytokine-modulating, immune-enhancing, and anticoagulant properties that might be beneficial in COVID-19 infections given the pathophysiological processes …

A Non-Biological Process for Selenium Removal from ...

Treated oil refining wastewater selenium (µg/l as Se) <2.5 Physical-chemical selenium removal using traditional water treatment equipment can save companies millions of dollars compared to best available technology costs and may be the deciding factor in continued operation or shutdown.

Selenium supplementation in thyroid associated ...

The therapeutic effect of selenium (Se) has already been proven in thyroid disease and thyroid associated ophthalmopathy (TAO). In spite of clear scientific proof of its benefits in TAO, there appears to be no clear agreement among the clinicians regarding its optimum dose, duration of the treatment, efficacy and safety to date.

Selenium Deficiency: Symptoms, Causes, and Treatment

Selenium is an important mineral for many of your body's functions. Learn more about the signs of selenium deficiency and why it might become a …

Treatment technologies for selenium contaminated water: A ...

Various treatment technologies such as precipitation and coagulation, adsorption, membrane separation, chemical and electrochemical reduction, bioremediation, and phytoremediation thus have been developed and applied to remove selenium for wastewater, drinking water, and groundwater ( Staicu et al., 2015a; Su, 2017 ).

The Role of Speciation for Selenium Treatment and ...

Challenges with Regulating Selenium • Selenium (Se) concentrations of waters are not directly predictive of toxicity o Bioavailability depends on the molecular form (species) of Se & ... • Treatment should lower both Se loading and bioavailability • Speciation data should be …

Treatment technologies for selenium contaminated water: A ...

According to the change of valence states of Se in the treatment processes, this review allocates the treatment technologies for selenium in water into three categories . The first one is physicochemical separation, aiming at separating selenium from water without changing its chemical valence, which includes membrane technology, adsorption, coagulation, and …

Selenium: A sole treatment for erosive oral lichen planus ...

Selenium (Se), an antioxidant, plays a role in modulating immunity. The aim of this clinical trial was to evaluate two Se forms ( novel topical hydrogel and oral capsules), solely, in treating erosive OLP based on clinical evaluation and salivary oxidative stress markers.

Effects of Selenium treatment on cardiac function in ...

Se treatment did not improve cardiac function (evaluated from LVEF) in CCC. However, in the subgroup of patients at B2 stage, a potential beneficial influence of Se was observed. Complementary studies are necessary to explore diverse Se dose and/or associations in different CCC stages (B2 and C), as well as in A and B1 stages with longer follow-up.

Selenium in the Therapy of Neurological Diseases. Where is ...

Selenium (34Se), an antioxidant trace element, is an important regulator of brain function. These beneficial properties that Se possesses are attributed to its ability to be incorporated into selenoproteins as an amino acid.

Selenium - Wikipedia

Selenium is a chemical element with the symbol Se and atomic number 34. It is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic.It rarely occurs in its elemental state or as pure ore compounds in the Earth's crust.

Selenium: Benefits, Uses, Side Effects, Dosage, and More

Selenium has also been studied for the treatment of dozens of conditions. They range from asthma to arthritis to dandruff to infertility. However, the …

Technical Applications Bulletin - Water Quality Association

Selenium Recognized Treatment Techniques For Meeting ... Selenium (Se) contamination of potable water supplies at concentrations above the current MCL of 0.05 milligram per liter (mg/L) is rare. In a 1982 study AWWA concluded that only 44 water supplies needed to …

Selenium - Health Professional Fact Sheet

Introduction. Selenium is a trace element that is naturally present in many foods, added to others, and available as a dietary supplement. Selenium, which is nutritionally essential for humans, is a constituent of more than two dozen selenoproteins that play critical roles in reproduction, thyroid hormone metabolism, DNA synthesis, and protection from oxidative damage and infection [].

Selenium Treatment - USP Technologies

Selenium Treatment in Oil Refineries with Hydrogen Peroxide. Regulatory agencies are tightening selenium discharge limits in a range of industries, including oil refining. Across the US for example, a growing number of states now require refiners to implement wastewater treatment processes to reduce effluent selenium levels.

The Effect of Foliar Selenium (Se) Treatment on Growth ...

Treating plants with 8 or 10 mg/L Se slightly, but significantly reduced net assimilation rate of CO 2 (A N, Figure 4 A), stomatal conductance to water vapour (g SW, Figure 4 B) and ratio of intercellular to atmospheric CO 2 concentration (C i /C a, Figure 4 C), which indicates that higher selenium concentrations enhanced stomatal limitation of photosynthetic …

Treatment of Selenium Impacted Water - Geosyntec

Selenium (Se) is a redox sensitive metalloid that can exist in the environment as different Se species. Water treatment options that may address one Se species may not work for others. Byproducts of Se treatment are challenging to detect using conventional methods and they can pose an increased risk to the environment. Regulatory standards for ...

Selenium removal from mining and process wastewater: a ...

Selenium (Se) and its oxyanions are emerging contaminants of major health and environmental concern. The contamination of the environment by selenium compounds can originate from various sources that include agricultural drainage water, mine drainage, residues from fossil fuel, thermoelectric power plants, oil refineries and metal ores.

Selenium treatment: What you need to know about selection ...

These Se forms matter most to the mining industry, because "of the various oxidation levels. Selenate is the predominant starting form of Se in mining," Tom explains. With selenite and elemental selenium as the in-state treatment targets, the key to treatment and removal is "keeping Se in these forms as a suspended solid in water.

Selenium Removal from Industrial Wastewater | Water …

Average influent total selenium was 230 ppb (54 percent as SeO 3, 46 percent as SeO 4), and average treated effluent after the process was 4.1 ppb Se (as SeO 4). As shown in Figure 3, only soluble influent selenium is reported because the insoluble portion is removed in upstream processes.

Selenium in the Therapy of Neurological Diseases. Where is ...

INTRODUCTION. Selenium (34 Se) is a trace element that is of fundamental importance to human health.In nature, this mineral occurs as a combination of organic and inorganic forms. Inorganic Se compounds, i.e. selenate (SeO 4 2—), selenite (SeO 3 2—) and selenide (Se 2—), are mainly present in water and soil, whereas the organic forms, selenomethionine (Se-Met) …

Treatment of Selenium Impacted Water - Geosyntec

The Selenium Challenge Selenium (Se) is a redox sensitive metalloid that can exist in the environment as different Se species. Water treatment options that may address one Se species may not work for others. Byproducts of Se treatment are challenging to detect using conventional methods and they can pose an increased risk to the environment.

(PDF) Selenium uptake and Se compounds in Se-treated buckwheat

In treated plants, the selenium content was significantly higher than in controls, irrespective of the plant part and taxon of buckwheat. The highest average Se concentrations in hybrid and ...

The Effect of Foliar Selenium (Se) Treatment on Growth ...

Selenium (Se) enrichment of Stevia rebaudiana Bertoni can serve a dual purpose, on the one hand to increase plant biomass and stress tolerance and on the other hand to produce Se fortified plant-based food. Foliar Se spraying (0, 6, 8, 10 mg/L selenate, 14 days) of Stevia plantlets resulted in slightly decreased stevioside and rebaudioside A concentrations, and it also …

The role of selenium metabolism and selenoproteins in ...

Selenium (Se) is an essential trace element in humans 1,2.Selenium is generally taken up from the diet through food or other forms of external supplementation.

Selenium (Se) is closely related to the prevention and ...

Selenium (Se) is closely related to the prevention and treatment of COVID-19 (COVID-19): in 2020, more than twenty research papers related to the "novel coronavirus -Se" were published in 2020. For example, published in the international famous magazine "Nutrients", the research shows that early unified zinc supplement and D D can significantly improve the …