Extracting iodine from seawater burning off organic matter

How is iodine extracted from seawater
Iodine in seawater is mainly enriched in some seaweeds, such as seaweed, etc. these seaweeds are burned to remove organic substances, and the ash is dissolved in water to obtain iodine ions, which are then oxidized with oxidants to obtain simple substances, which are obtained through sublimation and purification of iodine
Brief process of extracting iodine from seawater, high school chemistry, thank you
Iodine is extracted directly from seawater. Iodine can also be prepared from brine after salt exposure. The methods used include activated carbon adsorption, starch adsorption, silver nitrate or copper sulfate precipitation, ion exchange resin, etc. Some seaweeds have the ability to adsorb iodine. For example, the iodine content in dried kelp is generally 0.3% ~ 0What are the steps for extracting iodine from seawater
Concentration → oxidation → extraction → refining 1. Copper iodide method: add copper sulfate to acidic brine and ferrous sulfate to obtain cuprous iodide precipitation. After separation, dry and distill to obtain iodine. 2. Activated carbon adsorption method: chlorine is oxidized, then activated carbon is used to adsorb iodine, and then activated carbon is boiled with alkali solution to obtain iodate and iodide, and then chlorine is added to replace iodineExperimental steps of extracting iodine from seawater
Put the kelp ash generated after combustion into a beakerChemical equation for extracting iodine from seawater
H2o2+h2so4+2nai===i2+2h2o+na2so4, i.e. hydrogen peroxide + sulfuric acid +2 sodium iodide === iodine +2 water + sodium sulfate
How is iodine extracted from seawater
In the late 1970s, China put forward the concept of "ion covalent" adsorption and successfully developed ja-2 adsorbent, which can directly extract iodine and bromine from seawater; Since then, liquid-solid distribution and other enrichment methods have been developed, and iodine can also be extracted directly from seawater. Iodine can also be made from brine after salt exposureHow to extract iodine from seawater
In the late 1970s, China put forward the concept of "ion covalent" adsorption and successfully developed ja-2 adsorbent, which can directly extract iodine and bromine from seawater; Since then, liquid-solid distribution and other enrichment methods have been developed, and iodine can also be extracted directly from seawater. Iodine can also be made from brine after salt exposureHow to make iodine from seawater
In the late 1970s, China put forward the concept of "ion covalent" adsorption and successfully developed ja-2 adsorbent, which can directly extract iodine and bromine from seawater; Since then, liquid-solid distribution and other enrichment methods have been developed, and iodine can also be extracted directly from seawater. Iodine can also be made from brine after salt exposureHow to make iodine from seawater
Concentration → oxidation → extraction → refining 1. Copper iodide method: add copper sulfate to acidic brine and ferrous sulfate to obtain cuprous iodide precipitation. After separation, dry and distill to obtain iodine. 2. Activated carbon adsorption method: chlorine is oxidized, then activated carbon is used to adsorb iodine, and then activated carbon is boiled with alkali solution to obtain iodate and iodide, and then chlorine is added to replace iodineHow to extract iodine from seawater
In the late 1970s, China put forward the concept of "ion covalent" adsorption and successfully developed ja-2 adsorbent, which can directly extract iodine and bromine from seawater; Since then, liquid-solid distribution and other enrichment methods have been developed, and iodine can also be extracted directly from seawater. Iodine can also be made from brine after salt exposure