Preparation method of active carbon fiber phosphorous removing agent carrying lanthanum hydroxide

A technology of activated carbon fiber and lanthanum hydroxide, applied in chemical instruments and methods, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve problems such as low phosphorus affinity, low removal rate, and difficulty in reaching standards

Inactive Publication Date: 2011-11-23
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, activated carbon fiber has a low affinity for phosphorus in environmental wastewater, and the removal r

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment one: The concrete steps of this embodiment are:

[0021] (1) Measure 3 mL of lanthanum nitrate solution with a molar concentration of 0.4 mol / L and fill it in a 100 mL beaker;

[0022] (2) Gradually add dropwise to the lanthanum nitrate solution in the step (1) with a molar concentration of 0.4mol / L NaOH solution, and stir with a magnetic stirrer until the pH is 10; and obtain a suspension;

[0023] (3) Cut the activated carbon fibers into 0.4 cm cubes, wash several times with deionized water, soak in a certain amount of deionized water, filter, boil, and dry;

[0024] (4) 0.2 g of the activated carbon fiber obtained in step 3 was weighed, added to the suspension obtained in step (2), stirred with a magnetic stirrer for 2 h, filtered and washed several times with deionized water until the pH was 7; and obtain a solid;

[0025] (5) Put the solid matter obtained in step (4) into a vacuum drying oven for drying at a drying temperature of 1...

Embodiment 2

[0027] Embodiment two: The concrete steps of this embodiment are:

[0028] (1) Measure 4 mL of lanthanum nitrate solution with a molar concentration of 0.4 mol / L and fill it in a 100 mL beaker;

[0029] (2) Gradually add dropwise to the lanthanum nitrate solution in the step (1) with a molar concentration of 0.4mol / L NaOH solution, and stir with a magnetic stirrer until the pH is 10; and obtain a suspension;

[0030] (3) The activated carbon fibers were cut into 0.6 cm cubes, washed several times with deionized water, and in a certain amount of

[0031] Soak in deionized water, filter, boil, dry;

[0032] (4) 0.2 g of the activated carbon fiber obtained in step (3) was weighed, added to the suspension obtained in step (2), stirred with a magnetic stirrer for 1.5 h, filtered and washed several times with deionized water until the pH was 7; and get solids;

[0033] (5) Put the solid matter obtained in step (4) into a vacuum drying oven for drying at a dr...

Embodiment 3

[0034] Embodiment three: The concrete steps of this embodiment are:

[0035] (1) Measure 5 mL of lanthanum nitrate solution with a molar concentration of 0.4 mol / L and fill it in a 100 mL beaker;

[0036] (2) Gradually add dropwise to the lanthanum nitrate solution in the step (1) with a molar concentration of 0.4mol / L NaOH solution, and stir with a magnetic stirrer until the pH is 10; and obtain a suspension;

[0037] (3) Cut the activated carbon fibers into 0.4 cm cubes, wash several times with deionized water, soak in a certain amount of deionized water, filter, boil, and dry;

[0038] (4) 0.2 g of the activated carbon fiber obtained in step (3) was weighed, added to the suspension obtained in step (2), stirred with a magnetic stirrer for 1 h, filtered and washed several times with deionized water until the pH was 7; and get solids;

[0039] (5) Put the solid matter obtained in step (4) into a vacuum drying oven for drying at a drying temperature of ...

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Abstract

The invention relates to a preparation method of an active carbon fiber phosphorous removing agent carrying lanthanum hydroxide. The invention belongs to the technical field of phosphorous removing agent preparation technology. The novel phosphorous removing agent provided by the invention has advantages of high phosphorous removing rate, high absorption rate, and the like. The phosphorous removing rate reaches above 99.5%. The method of the invention is characterized in that: a mixed suspension composed of a concentration of lanthanum nitrate solution and a concentration of sodium hydroxide solution is adopted; a certain amount of active carbon fiber is added to the mixed suspension; the mixture is stirred, filtered, washed, and a solid phosphorous removing agent is finally obtained. According to the phosphorous removing agent, a weight ratio of active carbon fiber to lanthanum hydroxide is 1:1 to 1:1.2.

Description

technical field [0001] The invention relates to a preparation method of a novel phosphorus removal agent, in particular to a preparation method of a phosphorus removal agent loaded with lanthanum hydroxide on an activated carbon fiber matrix, and belongs to the technical field of phosphorus removal agent preparation technology. Background technique [0002] In recent years, with the continuous enhancement of human activities, a large amount of phosphorus-rich domestic sewage, industrial wastewater, and farmland water with pesticides and fertilizers have entered rivers, lakes and seas, causing eutrophication of water bodies, and phosphorus pollution in water bodies has become increasingly serious. Therefore, effectively reducing the phosphorus content in discharged water has become an important way to prevent and control water eutrophication and water pollution. Research and development of new phosphorus removal agents has become a very urgent task in the field of environmen...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F1/58
Inventor 刘建勇张玲万里华周奇李香灵
Owner SHANGHAI UNIV
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