Iodine reducing laminar material and method for processing iodine-enrichment water

A technology of layered materials and layered dihydroxyl groups, applied in the direction of ion exchange water/sewage treatment, inorganic anion exchangers, etc., can solve the problem of less distribution and achieve a good effect of iodine reduction

Inactive Publication Date: 2006-05-10
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

By adding lanthanum oxidenhydride (LaO) layers onto treated acidic ion exchange resin containing silver ions, it becomes possible to reduce iodines from contaminating sources such as sourced waters without affecting their quality levels. Additionally, this method allows for effective removal of other harmful substances like selenium and mercury during purification processes with strong acids at temperatures above 30-40°C.

Problems solved by technology

The technical problem addressed in this patents relates to finding ways to reduce harmful levels caused by diarrhea due to iodochloridum consumption. Current solutions involve adding chemical agents like sodium sulfur hexacylic acid (NaSCN) to prevent these diseases. These treatments may lead to negative side reactions including increased risk for kidneys if taken long enough. There is therefore interest in developing new sources containing highly effective ingredients without causing health hazards associated therewith.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: in the aqueous solution that 1000mL iodide ion concentration is 2000mg / L, add a certain amount of LDHs (10.0g), water bath constant temperature (30 ℃), with 1% nitric acid solution or sodium hydroxide solution control pH value is one Constant value (such as 6.0), react for 6 hours, filter and recover LDHs, and the iodine ion concentration of the filtrate is 0.1mg / L.

Embodiment 2

[0022] Embodiment 2: in the aqueous solution that 1000mL iodide ion concentration is 100mg / L, add a certain amount of LDHs (1.0g), water bath constant temperature (30 ℃), with 1% nitric acid solution or sodium hydroxide solution control pH value is one Constant value (such as 6.0), react for 1 hour, filter and recover LDHs, and the iodide ion concentration of the filtrate is 0.1mg / L.

Embodiment 3

[0023] Embodiment 3: in the aqueous solution that 2000mL iodide ion concentration is 100mg / L, add a certain amount of CLDH (2.0g), water bath constant temperature (30 ℃), react for 6 hours, filter and reclaim the treatment material, filtrate iodide ion concentration is 0.1mg / L.

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Abstract

The invention provides a layered material for degrading iodine and the method for treating iodine-containing water, belonging to the water treatment technique. The inventive layered material is the layered bi-hydroxy composite metallic oxide LDHs and its sintered product CLDH, whose chemical formula is [M2+1-xM3+x (OH) 2] x+ (An-) x/2*yH2O). The invention has following advantages that: it can be directly used the LDHs into the treatment of industry acid iodine-containing waster water, or using its sintered product CLDH into the treatment of iodine-containing waste water, while said material can process the high iodine-containing drinking water to reach the standard iodine content of 10-125 ª

Description

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Claims

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Application Information

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Owner BEIJING UNIV OF CHEM TECH
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