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Preparation method of manganese-carrying modified corncob activated carbon used for removing aniline in water body high efficiently

A technology of corn cob and activated carbon, which is applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of complex process, high treatment cost, secondary pollution, etc., achieve good selective adsorption, improve removal High efficiency and good economic benefits

Inactive Publication Date: 2018-07-10
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly aims at technical problems such as relatively high treatment cost, complex process and secondary pollution in the prior art, which generally exist in the treatment technology of aniline-containing water body or waste water, and provides a kind of water body removal method prepared by using corn cob as raw material. The method of manganese-loaded modified corn cob activated carbon of aniline

Method used

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  • Preparation method of manganese-carrying modified corncob activated carbon used for removing aniline in water body high efficiently
  • Preparation method of manganese-carrying modified corncob activated carbon used for removing aniline in water body high efficiently
  • Preparation method of manganese-carrying modified corncob activated carbon used for removing aniline in water body high efficiently

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Preparation of manganese-loaded modified corn cob activated carbon. Take 10 g of corncobs, according to the mass ratio of corncobs and phosphoric acid of 1:0.5, mix the corncob powder and phosphoric acid solid evenly, then add 2 mL of 2% boric acid, impregnate the corncob powder, and then roast at 350 °C After 15 minutes, cool and grind to obtain corn-based activated carbon. The obtained corn-based activated carbon is soaked in hydrochloric acid with a mass concentration of 10% for 2 to 3 hours, filtered, rinsed with distilled water until the pH value of the rinse water is neutral, dried and ground to obtain activated corncob activated carbon. Then, the prepared activated corn cob activated carbon was added to 50 mL of potassium permanganate solution with a concentration of 0.04 mol / L, stirred for 24 h at a speed of 100 r / min, modified by manganese doping, filtered, At a calcination temperature of 400 ℃, the solid product was calcined for 1 h, and then ground to obtain...

Embodiment 2

[0023] Preparation of manganese-loaded modified corn cob activated carbon. Take 10 g of corncobs, according to the mass ratio of corncobs and phosphoric acid of 1:1, mix the corncob powder and phosphoric acid solid evenly, then add 4 mL of 8% boric acid, impregnate the corncob powder, and then roast at 400 °C After 30 minutes, cool and grind to obtain corn-based activated carbon. The obtained corncob activated carbon is soaked in hydrochloric acid with a mass concentration of 5% for 2 to 3 hours, filtered, rinsed with distilled water until the pH value of the rinse water is neutral, dried and ground to obtain activated corncob activated carbon. Then, the prepared activated corn cob activated carbon was added to 50 mL of potassium permanganate solution with a concentration of 0.05 mol / L, stirred for 22 h at a speed of 150 r / min, modified by manganese doping, filtered, At a calcination temperature of 450 °C, the solid product was calcined for 2 h, and then ground to obtain the ...

Embodiment 3

[0026] Preparation of manganese-loaded modified corn cob activated carbon. Take 10 g of corncobs, according to the mass ratio of corncobs and phosphoric acid of 1:2, mix the corncob powder and phosphoric acid solid evenly, then add 10 mL of 5% boric acid, impregnate the corncob powder, and then roast at 450 °C After 60 minutes, cool and grind to obtain corn-based activated carbon. The obtained corncob activated carbon is soaked in hydrochloric acid with a mass concentration of 5% for 2 to 3 hours, filtered and rinsed with distilled water until the pH value of the rinse water is neutral, dried and ground to obtain activated corncob activated carbon. Then, the prepared activated corn cob activated carbon was added to 50 mL of potassium permanganate solution with a concentration of 0.05 mol / L, stirred for 20 h at a speed of 200 r / min, modified by manganese doping, filtered, At a calcination temperature of 450 °C, the solid product was calcined for 1 h, and then ground to obtain ...

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Abstract

The invention relates to a preparation method of a manganese-carrying modified corncob activated carbon used for removing aniline in a water body high efficiently, and aims to solve the technical problems of high treatment cost, complex process and secondary pollution generally existed in the technology of treating aniline-containing water body and wastewater in the prior art. The method providedby the invention specifically comprises the following steps: activating corncobs by using phosphoric acid and boric acid, roasting the activated corncob into corncob activated carbon, and on the basisof the corncob activated carbon, carrying out manganese-doping modification on the corncob activated carbon by using potassium permanganate. When applied to aniline-containing wastewater or water body, the manganese-carrying modified corncob activated carbon prepared by the method has the advantages of high adsorption effect, good economic benefit and remarkable environmental-protection benefit and the like compared with conventional activated carbon.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a preparation method of manganese-loaded modified corncob activated carbon for efficiently removing aniline in water. Background technique [0002] Aniline is an important chemical raw material and fine chemical intermediate, widely used in chemical, pharmaceutical and other fields. However, with the rapid development of the chemical industry and the pharmaceutical industry, the toxic substances such as aniline and its derivative nitroaniline entering the natural water body from waste water, waste gas and other links continue to increase, seriously polluting the environment and causing certain damage to human health. harm. Because aniline belongs to the three substances of "carcinogenic, teratogenic and mutagenic", it mainly causes methemoglobinemia, liver, kidney and skin damage, and has been listed as "priority control pollutant blacklist" by the state. st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20C02F1/28B01J20/30C02F101/38
CPCB01J20/06B01J20/20C02F1/283C02F2101/38
Inventor 李红艳李尚明高佩张峰崔建国王芳
Owner TAIYUAN UNIV OF TECH
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