Preparation method and application of humic acid/attapulgite magnetic composite material

A technology of magnetic composite materials and attapulgite, applied in chemical instruments and methods, other chemical processes, alkali metal compounds, etc., can solve the problems of poor adsorption effect of propranolol, low recovery efficiency and regeneration efficiency, and achieve low price, The effect of small iron loss and high removal efficiency

Active Publication Date: 2019-10-25
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to overcome the technical defects such as the poor adsorption effect of natural attapulgite to propranolol and low recovery efficiency and regeneration efficiency in the prior art, to provide a kind of preparation method of humic acid / attapulgite magnetic composite material and its application

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  • Preparation method and application of humic acid/attapulgite magnetic composite material
  • Preparation method and application of humic acid/attapulgite magnetic composite material
  • Preparation method and application of humic acid/attapulgite magnetic composite material

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preparation example Construction

[0040] The specific embodiment of the present invention provides a preparation method of humic acid / attapulgite magnetic composite material, the preparation method includes the following steps:

[0041] Step 1: Activate the original attapulgite soil with strong acid to remove the cemented carbonate and adsorbed cations on the original attapulgite soil; after activation, wash to neutrality, dry and grind to obtain acid-modified unevenness Stick soil, spare;

[0042] Step 2: Take the acid-modified attapulgite prepared in step 1, and load ferroferric oxide on the surface of the acid-modified attapulgite, and then ultrasonically disperse the acid-modified attapulgite (ATP) on the surface Obtain attapulgite suspension in deionized water;

[0043] Continue to add ferrous sulfate heptahydrate to the attapulgite suspension to obtain the first mixed solution; place the prepared first mixed solution in a water bath at 90°C for preheating;

[0044] Step 3: Combine NaOH and NaNO 3 After mixing, ...

Embodiment 1

[0055] This embodiment provides a method for preparing a humic acid / attapulgite magnetic composite material, including the following steps:

[0056] Step 1: The original attapulgite soil was first activated with 5% hydrochloric acid for 48 hours, washed to neutrality, dried at 110°C, ground through a 200-mesh sieve, and set aside.

[0057] Step 2: Take acid-modified attapulgite, and load ferroferric oxide on the surface of acid-modified attapulgite. First take 1g of acid-modified attapulgite and disperse it in 200ml of deionized water by ultrasonic for 30min, and then add 4g of ferrous sulfate heptahydrate to the attapulgite suspension to obtain the first mixed solution; Put the liquid in a water bath at 90℃ for heat preservation;

[0058] Step 3: Take another 3.6g NaOH and 1.8g NaNO 3 Dissolve it in 80ml of aqueous solution and add 0g of humic acid to obtain a second mixed solution, which is also placed in a water bath at 90°C for heat preservation;

[0059] Step 4: In N 2 In the ca...

Embodiment 2

[0062] This embodiment provides a method for preparing a humic acid / attapulgite magnetic composite material: 0.5 g of humic acid is added in step three, and the other method steps are the same as those in embodiment 1, and will not be repeated here.

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Abstract

The invention provides a preparation method and application of a magnetic humic acid / attapulgite composite material. Compared with attapulgite, humic acid modified magnetic attapulgite is not only capable of quickly and effectively removing propranolol in water, but also capable of resisting interference from humic acid in the water to a certain degree. The prepared humic acid modified magnetic attapulgite is capable of absorbing the propranolol in the water quickly and effectively with small amount of iron loss, specifically, prepared humic acid modified magnetic attapulgite is capable of absorbing the propranolol in the water quickly and effectively within 1 hour, and the absorbing capacity of the prepared humic acid modified magnetic attapulgite is higher than that of ferroferric oxideand magnetic attapulgite. Under the condition that the pH (potential of hydrogen) value is 4-9, the amount of iron loss is not larger than 0.017mg / L, which proves that the prepared magnetic humic acid / attapulgite composite material is stable in reaction process. The humic acid modified magnetic attapulgite not only is capable of removing the propranolol in the water effectively, but also is simple in preparation method, low in cost and free from secondary pollution to environment, and thereby being great in application prospect.

Description

Technical field [0001] The invention belongs to the field of environmental functional material preparation, and specifically relates to a preparation method and application of a humic acid / attapulgite magnetic composite material. Background technique [0002] In recent years, due to the rapid development of my country's economy, the demand for various resources has been increasing. The development of water resources and the discharge of a large number of pollutants have made the water pollution problem more and more serious. The increasingly serious water pollution problem not only reduces the use of water bodies, but also exacerbates the contradiction of water shortages, and a large number of pollutants enter the water bodies, which will cause serious harm to aquatic organisms and human health. Due to the frequent use of drugs, human or animal excretion and unreasonable disposal of waste drugs, imperfect sewage treatment technology, etc., the water environment has been polluted ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/28C02F1/28B01J20/30
CPCB01J20/06B01J20/12B01J20/24B01J20/28009C02F1/281C02F1/286
Inventor 邓月华李娅妮
Owner XIAN UNIV OF SCI & TECH
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