selenium removal method

java - WebDriver remove element from page - Stack Overflow

How it can be achieved in Java with Selenium WebDriver ? Please show an example. java selenium-webdriver selenium-chromedriver. Share. Improve this question. ... getElementsByClassName() returns an HTMLCollection, which does not have a remove() method -- could use document.getElementsByClassName('review-info-star')[0].remove() – Ben Mordue ...

Selenium removal from water and its recovery using iron ...

Selenium is an important nutrient for human and animal health at a range of 60–135 ppb but is toxic above this value, . According to EU and WHO standards, the maximum selenium content in drinking water is 0.01 ppm. There is no universal method for selenium removal from water.

Selenium Removal From Ground Water Using Activated Alumina

----- EPA-600/2-80-153 August 1980 SELENIUM REMOVAL FROM GROUND WATER USING ACTUATED ALUMINA BY R. Rhodes Trussell, Albert Trussell and Peter Kreft Oames M. Montgomery, Consulting Engineers, Inc. Pasadena, California 91101 Contract No. 68-03-1515 Project Officer Richard Lauch Drinking Water Research Division Municipal Environmental Research Laboratory Cincinnati, …

Method Spotlight: Selenium Speciation of FGD Wastewaters ...

Method Spotlight: Selenium Speciation of FGD Wastewaters. Coal usually contains high levels of selenium, particularly from sources that are also high in sulfur. This results in waste streams from coal-fired power plants having selenium concentrations that far exceed industrial discharge limits. Removal of selenium from these wastewater streams ...

The Potential of Phytoremediation Techniques for …

inexpensive, environmentally-friendly method of selenium remediation is in great need for the Kesterson area as well as other areas with high selenium concentrations. In this paper, phytoremediation, a promising technique for selenium clean-up will be described and the results of …

SELENIUM REMOVAL FROM DRINKING WATER BY ION …

Strong-base anion exchangers were shown to remove selenate and selenite ions from drinking water. Because selenium species are usually present at low concentrations, the efficiency of removal is controlled by the concentration of the common drinking water anions, the most important being sulfate. The ion-exchange behavior of selenate was found to be identical to that of sulfate, while …

Biological Selenium Removal: Solution To Pollution ...

Biological Selenium Removal: Solution To Pollution? Unsafe levels of selenium, sometimes referred to as an "essential toxin," can be reduced by a …

Arsenic and selenium removal from water using ...

For selenium removal, the effect of adsorbent dosage showed a relatively positive influence. ... the experimental results that adsorbent dosage and solution pH contributed the highest impact on arsenic and selenium removal efficiency. The reported method is environmentally friendly with respect to both the synthesis and the optimization of the ...

Selenium Removal from Industrial Wastewater | Water …

Selenium Removal from Industrial Wastewater. June 12, 2020. New process offers physical-chemical alternative to biological method. Dave Karlovich, Vladimir Djukanovic, Brad Buecker. Photo by NOAA on Unsplash. Coal-fired power plant outside of Fairbanks, Ak.

Feasibility of In Situ, Passive Groundwater Treatment to ...

economical method to perform passive, in-situ removal of selenium from irrigation-induced groundwater. 2. In the event that a promising method was identified for further evaluation, identify and assess locations best suited for a potential pilot project.

Selenium removal method - Chevron U.S.A. Inc.

Selenium removal method . United States Patent 7282152 . Abstract: The present invention provides a method for removing selenium from an aqueous stream by passing the aqueous stream, in combination with a quaternary amine compound, through a filter and recovering a treated aqueous stream which is depleted in selenium content relative to the ...

Selenium in wastewater: fast analysis method development ...

The reported UV-Vis method was applied to establish the effect of AOPs on selenium removal. It was noted that all of the AOP treated samples showed removal of selenium and it was established that the UV-Vis method has a lower limit of detection at 2 mg/L.

Novel selenium removal method developed for mine waste ...

Selenium in mine-impacted water is often difficult to remove due to the presence of nitrate; this new method is able to overcome this complication. The team obtained the genomes for these previously unknown microorganisms through the use of metagenomic sequencing. Read the abstract below and keep an eye out for this upcoming publication.

Selenium Removal using Ion Exchange Resin - Dynalene, Inc.

The selenium removal for SE-25MX and SE-25AX ion exchange resins were 5.4 µg/L and less than 4.5 µg/L. The method detection limit for the instrument was 4.5µg/L. Therefore, the exact amount of selenium in one of the test fluid was not detected due to its concentration is less than 4.5 µg/L.

Selenium Removal Key to Water Reuse and Sustainable ...

USBR investigated selenium removal technologies from 2003 to 2006. Investigations included laboratory bench-testing and field pilot-testing to reduce selenium concentrations in local agricultural drainage water near Firebaugh, California. USBR issued a Record of Decision in 2007, which selected a drainage alternative

How to handle Alerts & Popups in Selenium | BrowserStack

Handling alerts manually is a tedious task. To reduce human intervention and ease this task, Selenium provides a wide range of functionalities and methods to handle alerts. The following methods are useful to handle alerts in selenium: 1. Void dismiss(): This method is used when the 'Cancel' button is clicked in the alert box.

Selenium RemoteWebDriver: What Is It? How Is It Different ...

Selenium RemoteWebDriver is used to execute the browser automation suite on a remote machine. In other words, RemoteWebDriver is a class that implements the WebDriver interface on the remote server. The browser driver classes like FirefoxDriver, ChromeDriver, InternetExplorerDriver, etc. extend the Remote WebDriver class.

Selenium removal from water using adsorbents: A critical ...

Concentration of selenium in such contaminated water is sometimes as high as 400–700 μg/L. Removal of selenium from such water to the safe level of40 μg/l is a big challenge to the scientific ...

Selenium removal method -

Selenium removal method ... The present method removes selenium from an aqueous refinery stream by passing the aqueous stream, in combination with a quaternary amine compound, through a filter that can include clay, cellulose, starch, activated carbon, and the like. ...

(PDF) Selenium removal from mining and process wastewater ...

the most frequently used methods for selenium removal. from mining and process wastewaters in order to give. an extensive overview of the possibilities to reduce selenium.

Removal of Aqueous Selenium by Four Aquatic Plants

An advantage with selenium remediation is that seleni-um is an essential trace element for adequate nutrition and health in mammals. One safe disposal method would involve using the selenium enriched plant material as forage for ani-mals with low selenium levels. Another option would be to use the selenium-enriched plant material as organic ...

Selenium Removal From Drinking Water By Ion Exchange

Conclusions 1) Ion exchange is capable of remov- ing selenium anions (selenate and sele- nite) from drinking water. The effective- ness of this method depends on the composition of the water. Specifically, for the strong-base resin Dowex 2x8 at representative drinking-water concen- trations (around 0.005 N), • selenate removal is limited only ...

Selenium Removal Technologies A Review - Water Online

Selenium Removal Technologies: A Review. Selenium has emerged as a water treatment contaminant of concern in industries such as mining, oil refining, and power generation. In southeastern Idaho phosphate mines, selenium has been a major issue for two decades and is currently the subject of a large-scale federally mandated cleanup effort.

Selenium Removal Technology | ChemTreat, Inc.

SeQuester is a targeted physical chemical process designed to remove selenium from effluent water in industrial wastewater applications. This innovative selenium removal technology reduces selenium concentrations via chemical and physical methods …

Measurement of in situ rates of selenate removal by ...

A radioisotope method for measurement of bacteria respiratory reduction of selenate to elemental selenium in aquatic sediments was devised. Sediments were labeled with [75Se]selenate, incubated, and washed, and 75Se0(s) was determined as counts remaining in the sediments. Core profiles of selenate reduction, sulfate reduction, and denitrification were made simultaneously in the sediments …

Solving the selenium problem

Selenium removal technology. Achieving these new levels is easier said than done. Selenium is a slippery, multi-headed problem for mining. For starters, any technology has to treat large volumes of water to remove tiny traces of selenium.

Selenium Removal from Wastewater| SUEZ

ABMet* for selenium removal from water & wastewater. ABMet is a revolutionary biological process that removes metals and inorganics from wastewater to below non-detect levels. The ABMet process uses naturally occurring, non-pathogenic microbes to reduce and precipitate target compounds. The result is a highly efficient biological system that ...

US7282152B2 - Selenium removal method - Google Patents

The present invention provides a method for removing selenium from an aqueous stream by passing the aqueous stream, in combination with a quaternary amine compound, through a filter and recovering a treated aqueous stream which is depleted in selenium content relative to the untreated aqueous stream. The present method removes selenium from an aqueous refinery stream by passing the aqueous ...

US20050079114A1 - Selenium removal method - Google Patents

The present invention provides a method for removing selenium from an aqueous stream by passing the aqueous stream, in combination with a quaternary amine compound, through a filter and recovering a treated aqueous stream which is depleted in selenium content relative to the untreated aqueous stream. The present method removes selenium from an aqueous refinery stream by passing the aqueous ...

Selenium Removal by SMI | Prima Environmental

Effluent from sour water (SW) strippers and other wastewater streams from oil refineries is often impacted with selenium at concentrations of 1 mg/L or higher. Existing removal methods include iron co-precipitation and biological removal, which may be expensive, produce large amounts of sludge, or require a large footprint.

Biological Removal of Selenate and Selenite from ...

Purpose of Review Different selenium species released into the environment by anthropogenic activities pollute surface and ground water resources and can cause severe damage to the environment and ecosystems due to bio-accumulation. Though several physico-chemical methods are available to treat selenium oxyanion-containing wastewater, biological methods have gained …