Iron oxide minerals
Journal of Cleaner Production, Volumes 29–30, July 2012, Pages 208–213
Sonia Aredes, Bern Klein, , Marek Pawlik. Norman B. Keevil Institute of Mining Engineering, University of British Columbia, 517-6350 Stores Road, Vancouver BC V6T 1Z4, Canada
The contamination of groundwater with arsenic is a serious health issue in many parts of the world. Although iron has been shown to be effective at removal of arsenic from water, there has been no research to assess the feasibility of using natural iron oxide minerals for water treatment. The successful treatment of water to remove arsenic requires an understanding of arsenic chemistry and the physical–chemical interactions between arsenic and iron oxide minerals. A study was conducted to evaluate hematite, magnetite, goethite and iron rich laterite soil as arsenic adsorbents. Electroacoustic measurements were conducted to assess the nature of arsenic adsorption. Results showed that arsenic adsorption occurred over the entire pH range tested (pH 4–11). The isoelectric point shifted due to arsenic adsorption and this is a strong evidence of specific ion adsorption. This was supported by leaching tests that indicated strong attachment of arsenic to the surface of iron oxide minerals. Adsorption tests showed that iron rich laterite was most effective for arsenic removal, followed by goethite, magnetite and hematite. This was attributed to the higher specific surface area of the respective minerals.
The study also demonstrates a simple water treatment method involving the use of low cost natural iron oxide minerals for arsenic removal to meet drinking water standards. Treatment of 100 mL of water containing 20 ppm arsenic with 5 g of laterite reduced the arsenic level down to 10 ppb within a period of 10 min.What does chewing ice mean sexually? Tips when starting out as an insurance agent? How to make peanut brittle? How to remove iron on vinyl? how to cook hamburger helper on the stove What episode does the 4th ninja war start? What are the components of a nucleotide? What does [as]mean? Why cant you accept tips at walmart? What a sex worker meaning? How to turn off tips in photoshop? What is crippling depression meaning? How to remove warts? What does short term disability cover? What does or mean? What is the meaning of broken? Football tricks how to do them? How to evolve misdreavus? How to remove viruses from iphone? What is the meaning of goods? what hamburger helper comes with chips what activate helper t cells+quizlet What is rubella? What is the meaning of breach? What does sph mean for glasses? What motorbikes are used for tricks? How to test for asbestos? Tips on how to cruise? What does fedex on site mean? What does it mean to eat crow? What does a faint line on a pregnancy test mean? What does toner do for your face? How to clear cookies on safari? Why are the tips of my cat palm turning brown? What does it mean when your dog throws up? How to unsend a text? What is the meaning of the puerto rico flag? What are all solder tips for? What is the meaning of a black wedding ring? How to bring down a fever in a child? How to increase credit score? where to get the word helper app How long to cook stuffed pork chops? Tricks on how to dry up bath salts site:youtube.com? Which statement best explains the meaning of the phrase "like dissolves like"? What does double jeopardy mean? How to find meaning? Which of the following suffixes have the same meaning as al? How to change voicemail on android? What does available balance mean? What is tri tips beef? How to make cold brew? What does syndication mean? What are biometrics? What meaning in telugu? How to train your dragon: homecoming? How it ends movie meaning? What does it mean to open your third eye? What does it mean when you dream about money? What is the meaning of the colors? What does the forefinger and thumb tips together mean? What does including but not limited to mean? How to scissor? What is the spiritual meaning of 7777? What is the meaning of priority date in uscis? How to make essential oils? What is the meaning of pollutant? What is the meaning of accepted value with respect to an experimental measurement? What is hemp oil? How much tips should i give for delivery? How to make a tuna melt? I love how coffee tricks me into thinking? What is due diligence? How to talk to anyone 92 little tricks pdf free? How to unarchive a post on instagram? How to clean cast iron pan? What are analytical skills? What does it mean if your period blood is black? Face roller how to use? How to sew a button? How to insulate a garage? How to get rid of june bugs? Sims 4 how to typing tricks? How to get scratches out of glasses? What is the meaning of tucson? What does consignee mean? What does wpm mean? How to teach mini pig tricks? What is the meaning behind? How to use nair on private area? How to get rid of sweaty hands? How to know if a wall is load bearing? How to downgrade to windows 10? How to ss on chromebook? What is the meaning of a dead bird? How to cook pigs feet? How to do great magic tricks? Sex tips when impotent? How to create an app? How to cancel philo? Tips for figuring out how to unscramble? Meaning of i know why the caged bird sings poem?
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