Composite adsorbing material for removing lithium ions in natural water and preparation method thereof

A technology of composite adsorption materials and lithium ions, which is applied in chemical instruments and methods, adsorption water/sewage treatment, and other chemical processes, can solve the problems of secondary pollution and materials that cannot be recycled and reused, and achieve low processing costs , The preparation method is simple and the raw materials are easy to obtain

Inactive Publication Date: 2013-01-16
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method of removing water by existing adsorption materials is lithium ions, and there are sti

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] Weigh AI(OH) 3 Mix with LiOH and add water, react for 10min, add dilute hydrochloric acid and stir to keep the pH value of the supernatant of the mixture between 5. After pickling for 3 h, the mixture was washed with water to remove LiCl, and Al(OH) containing specific holes was obtained. 3 Crystallization is the aluminum salt adsorbent. Using spinel and lithium manganese oxide (mass ratio of lithium to manganese is 1.0) to synthesize ion sieve precursor through roasting process (calcination process at 200°C for 2h, 600°C for 6h), and then pickling the precursor after transformation. Li-ion sieve. Add 20% colloidal solvent to the aluminum salt solution, then add lithium ion sieve, control the temperature at 30°C, mix and react for 2 minutes, let stand for 20 minutes, discard the supernatant, wash the precipitate with water once, and the precipitate is settled , washed, filtered, centrifuged, and air-dried to make a solid material.

example 2

[0023] Weigh AI(OH) 3 Mix with LiOH and add water, react for 20min, add dilute hydrochloric acid and stir to keep the pH value of the supernatant of the mixture between 7. After acid washing for 5 h, the mixture was washed with water to remove LiCl, and the AI(OH) containing specific holes was obtained. 3 Crystallization is the aluminum salt adsorbent. Using spinel and lithium manganese oxide (mass ratio of lithium to manganese is 1.0) to synthesize ion sieve precursor through roasting process (calcination process at 200°C for 2h, 600°C for 6h), and then pickling the precursor after transformation. Li-ion sieve. Add 40% colloidal solvent to the aluminum salt solution, then add lithium ion sieve, control the temperature at 60°C, mix and react for 5 minutes, let stand for 40 minutes, discard the supernatant, wash the precipitate with water 3 times, and the precipitate is settled , washed, filtered, centrifuged, and air-dried to make a solid material.

example 3

[0025] Weigh AI(OH) 3 Mix it with LiOH and water, react for 15 minutes, add dilute hydrochloric acid and stir to keep the pH value of the supernatant of the mixture between 6. After acid washing for 4 h, the mixture was washed with water to remove LiCl, and the AI(OH) containing specific holes was obtained. 3 Crystallization is the aluminum salt adsorbent. Use spinel and lithium manganese oxide (mass ratio of lithium manganese is 1.0) to synthesize ion sieve precursor through roasting process (calcination process at 200 ° C for 2 h, 600 ° C for 6 h), and then make the precursor by pickling and transforming A lithium ion sieve was obtained. Add 30% colloidal solvent to the aluminum salt solution, then add a lithium ion sieve, control the temperature at 45°C, mix and react for 4 minutes, let stand for 30 minutes, discard the supernatant, wash the precipitate with water twice, and settle the precipitate. Wash, filter, centrifuge, and air dry to produce a solid material.

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PUM

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Abstract

The invention belongs to the field of water treatment in the environmental protection industry, and particularly relates to a method for preparing a novel composite adsorbing material for removing lithium ions in natural water. The composite adsorbing material is obtained by loading aluminum salt on a lithium ion screen modified by deep sea manganese nodules. According to the invention, the composite adsorbing material is obtained by the following steps of: preparing aluminum hydroxide and lithium hydroxide into aluminum salt, then, modifying the deep sea manganese nodules to obtain the lithium ion screen, combining aluminum slat and the lithium ion screen through a gelatinizing solvent, and finally, settling, washing, filtrating, centrifuging and air drying. The composite adsorbing material for removing the lithium ions in the natural water, provided by the invention, has the characteristics that the selective adsorption capacity on the lithium ions is efficient, the operation the simple, no secondary pollution is caused, recycling is realized, the price is low, and the like. The composite adsorbing material for removing the lithium ions in the natural water, provided by the invention, is simple in technology, low in cost, high in efficiency and beneficial for environmental protection, thereby having higher economic and social benefits in the field of water treatment.

Description

technical field [0001] The present invention relates to a kind of composite adsorption material and preparation method thereof that removes lithium ion in natural water body, and its body relates to utilizing aluminum salt load to make on the lithium ion sieve that just wakes up by deep-sea manganese nodules. A novel material belongs to the field of water purification treatment. Background technique [0002] Lithium is the lightest known alkali metal with the smallest radius. It is one of the important rare metals in my country and is widely used in energy, atomic energy industry, chemical aerospace and many other fields. Due to the wide application of lithium and its compounds in many fields, the pollution of lithium ions has attracted more and more attention. Lithium ions can pollute groundwater and soil, thereby polluting fish, home crops, etc., destroying the living environment of human beings, and threatening human health. [0003] At present, the methods used to remo...

Claims

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Application Information

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IPC IPC(8): B01J20/08B01J20/30C02F1/28C02F1/58
Inventor 雷春生陈蓉蓉雷思宇
Owner CHANGZHOU UNIV
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