Activated carbon fiber adsorbent loaded with lanthanum hydroxide and preparation method thereof

A technology of activated carbon fiber and lanthanum hydroxide, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of low phosphorus affinity and low removal rate, and achieve high adsorption rate, The effect of high adsorption capacity and increased load capacity

Inactive Publication Date: 2012-02-15
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, activated carbon fibers have low affinity for phosphorus in environmental wastewater, and the removal rate is not high. It is difficult to meet the standard for wastewater treatment using only activated carbon fibers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment one: The concrete steps of this embodiment are:

[0023] 1. Measure 5 mL of lanthanum nitrate solution with a molar concentration of 0.05 mol / L and place it in a 100 mL beaker;

[0024] 2. Gradually add NaOH solution with a molar concentration of 1mol / L to the lanthanum nitrate solution in step 1, stir evenly until the pH is 10, and place it in ultrasonic pretreatment for 2 minutes;

[0025] 3. Cut the activated carbon fibers into 0.4-0.6cm cubes, wash with deionized water for several times, then soak in a certain amount of deionized water, filter, boil and dry;

[0026] 4. Weigh 0.1 g of the activated carbon fiber obtained in step 3, add it to the suspension obtained in step 2, treat it with ultrasonic waves for 10 minutes, take out the solid and wash it several times with deionized water until the pH is 7, and then suction filter;

[0027] 5. Put the solid obtained in step 4 to dry in a vacuum oven at a drying temperature of 105° C. and a drying time of 5...

Embodiment 2

[0029] Embodiment two: The concrete steps of this embodiment are:

[0030] 1. Measure 5 mL of lanthanum nitrate solution with a molar concentration of 0.07 mol / L and place it in a 100 mL beaker;

[0031] 2. Gradually add NaOH solution with a molar concentration of 1mol / L to the lanthanum nitrate solution in step 1, stir evenly until the pH is 10, and place it in ultrasonic pretreatment for 2 minutes;

[0032] 3. Cut the activated carbon fibers into 0.4-0.6cm cubes, wash with deionized water for several times, then soak in a certain amount of deionized water, filter, boil and dry;

[0033] 4. Weigh 0.1 g of the activated carbon fiber obtained in step 3, add it to the suspension obtained in step 2, treat it with ultrasonic waves for 10 minutes, take out the solid and wash it several times with deionized water until the pH is 7, and then suction filter;

[0034] 5. Put the solid obtained in step 4 to dry in a vacuum oven at a drying temperature of 105° C. and a drying time of ...

Embodiment 3

[0036] Embodiment three: The concrete steps of this embodiment are:

[0037] 1. Measure 5 mL of lanthanum nitrate solution with a molar concentration of 0.09 mol / L and place it in a 100 mL beaker;

[0038] 2. Gradually add NaOH solution with a molar concentration of 1mol / L to the lanthanum nitrate solution in step 1, stir evenly until the pH is 10, and place it in ultrasonic pretreatment for 2 minutes;

[0039] 3. Cut the activated carbon fibers into 0.4-0.6cm cubes, wash with deionized water for several times, then soak in a certain amount of deionized water, filter, boil and dry;

[0040] 4. Weigh 0.1 g of the activated carbon fiber obtained in step 3, add it to the suspension obtained in step 2, treat it with ultrasonic waves for 10 minutes, take out the solid and wash it several times with deionized water until the pH is 7, and then suction filter;

[0041] 5. Put the solid obtained in step 4 to dry in a vacuum oven at a drying temperature of 105° C. and a drying time o...

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PUM

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Abstract

The invention relates to an activated carbon fiber adsorbent loaded with lanthanum hydroxide and a preparation method thereof. An activated carbon fiber is taken as a substrate of the absorbent and the lanthanum hydroxide is loaded on the substrate, wherein a scope of a weight ratio of the lanthanum hydroxide to the activated carbon fiber is 0-0.85. Under an acoustic cavitation effect of ultrasonic waves, a periodical oscillating effect is achieved in liquid, thereby achieving a smaller dimension of deposited crystallite, achieving uniform size distribution and excellent dispersity, strengthening a transmitting process, causing the lanthanum hydroxide to efficiently enter into the activated carbon fiber, and efficiently promoting a loading capacity and shortening preparation time. The adsorbent prepared by using the method provided by the invention has the advantages of high adsorption capacity, high adsorption rate and the like. An ultrasonic depositing method has the advantages that a required instrument is simple, operation is convenient, a compounding temperature is low, an easily occurring conglobating defect of a traditional depositing method is overcome, and an industrial application prospect is excellent.

Description

technical field [0001] The invention relates to an activated carbon fiber adsorbent and a preparation method thereof, in particular to an activated carbon fiber adsorbent loaded with lanthanum hydroxide and a preparation method thereof. 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 environmental protection. [0003] At present, the commonly used wastewater phosphorus removal methods ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/32C02F1/28C02F1/58
Inventor 张玲刘建勇周奇万里华刘凡清
Owner SHANGHAI UNIV
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