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Method for adsorbing trace lead ions in water

A lead ion and water adsorption technology, applied in the fields of adsorption water/sewage treatment, chemical instruments and methods, water pollutants, etc. The effect of causing danger

Inactive Publication Date: 2015-03-25
朱凌嘉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no such method of water purification

Method used

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Examples

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specific Embodiment 1

[0015] Take 10 g of attapulgite clay and put it in a beaker, add 100 ml of dilute hydrochloric acid, stir for 30 min, let stand for 30 min, and then suction filter. The obtained solid was washed three times with deionized water, and the washed attapulgite clay was dried at 90° C. for later use. Take 16ml of phosphoric acid (9 mol / L) in a beaker, add 3 g of attapulgite clay, and add water to dilute to 80 ml. The solution was placed in a water bath at 100°C for 2 h. Filter and dry the obtained filter cake at 200°C.

[0016] Dissolve 2 g of chitosan and 2 g of modified attapulgite clay in 100 ml of 2% acetic acid solution, stir for 1 h, and let stand at room temperature for 2 D. In a 250 ml three-necked flask equipped with a stirrer and a thermometer, add 50 ml of liquid paraffin, 100 ml of cyclohexane, 5 ml of ethyl acetate, some span80, stir for 0.5 h, add 100 ml of chitosan and modified Posterior attapulgite clay solution. The system was heated to 60°C with a water bath, s...

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Abstract

The present invention provides a method for adsorbing trace lead ions in water. According to the present invention, phosphoric acid is adopted to modify and activate attapulgite, the modified attapulgite and chitosan are matched according to a mass ratio of 1:1-1:1.5, the raw material and an acetic acid solution are subjected to mixing standing, a hold preparing agent and a cross-linking agent are prepared, the mixed solution is subjected to a cross-linking hole preparing reaction, vacuum suction filtration is performed to prepare microspheres, the microspheres are treated through a Soxhlet extractor, and vacuum drying is performed to achieve a constant state. With the method of the present invention, the safety problem of the lead ion-containing drinking water in the daily life is solved, such that the hidden danger on the human body safety due to the water pollution can be eliminated, the human body safety can be ensured; and the attapulgite and the chitosan have characteristics of rich source and low price, the production of the composite is simple and low-cost, and the method has the promotion effect in the field of water treatment, and has the industrialization prospect.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a method for adsorbing trace lead ions in water. Background technique [0002] Water purification Due to the relative lack of awareness of environmental protection, the problem of metal ion water pollution caused by the development of industrialization is increasingly threatening human health and the ecological balance of nature, especially when too much lead ions in water lead to lead poisoning of children frequently occurs. However, in the fields of remediating pollution and protecting ecology, the treatment of heavy metal ions in water faces the challenges of high material cost or complicated process. [0003] In the patent CN 102826684A, a method for removing lead ions in sewage is provided. The lead ions in sewage react with alkali. Under slightly alkaline conditions, lead ions can form insoluble and stable precipitates, which are precipitated and discharged; then...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F1/62
CPCB01J20/24B01J20/12C02F1/281C02F1/286C02F1/288C02F2101/20
Inventor 朱凌嘉
Owner 朱凌嘉
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