Preparation method and application of porous bio-carrier adsorption material

A biological carrier and adsorption material technology, which is applied to the recycling and reuse of agricultural and sideline product waste, the preparation of adsorption materials, and the preparation of porous biological carrier adsorption materials, can solve the fundamental problems of crop straw, soil compaction, soil fertility, Occupying a large amount of cultivated land and other problems, to achieve the effects of adsorption, lighten the burden and prolong the service life

Inactive Publication Date: 2016-11-23
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] my country is a large agricultural country. Wheat straw is the main agricultural waste in our country, especially in the northern region. It has been treated as waste for a long time, and it is disposed of randomly or burned in a large area. This disposal method will not only occupy a large amount of arable land, but also cause severe A series of problems such as air pollution, soil compaction and soil ferti...

Method used

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  • Preparation method and application of porous bio-carrier adsorption material
  • Preparation method and application of porous bio-carrier adsorption material
  • Preparation method and application of porous bio-carrier adsorption material

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Experimental program
Comparison scheme
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Embodiment 1

[0029] The preparation method of porous biological carrier adsorption material in the present embodiment is as follows:

[0030] 1. Crushing the wheat straw with a miniature plant pulverizer and passing through a 40-mesh sieve to obtain powder a;

[0031] 2. Pass the attapulgite and limonite powder through a 70-mesh sieve respectively to obtain attapulgite powder b and limonite powder c;

[0032] 3. Mix powder a, attapulgite powder b and limonite powder c according to a certain mass ratio, add water to granulate, control the particle size at 6-10mm, and then dry at 105°C to obtain granules; wheat straw , attapulgite and limonite mass ratio is 1:1:1.

[0033] 4. Place the obtained pellets in a high-temperature tube furnace, sinter at 600°C, 700°C, 800°C, 900°C, and 1000°C under nitrogen protection, and obtain a limonite-based Fe / C porous biological carrier after cooling Adsorbent material.

[0034] The temperature rise process of high-temperature sintering is controlled as f...

Embodiment 2

[0044] The preparation method of porous biological carrier adsorption material in the present embodiment is as follows:

[0045] 1. Crushing the wheat straw with a miniature plant pulverizer and passing through a 40-mesh sieve to obtain powder a;

[0046] 2. Pass the attapulgite and limonite powder through a 70-mesh sieve respectively to obtain attapulgite powder b and limonite powder c;

[0047] 3. Mix 100g of powder a, 100g of attapulgite powder b and 100g of limonite powder c, add water and granulate, the particle size is controlled at 6-10mm, and then dry at 105°C to obtain granules;

[0048] 4. Place the obtained pellets in a high-temperature tube furnace, sinter at a high temperature of 900° C. under nitrogen protection, and obtain a limonite-based Fe / C porous biological carrier adsorption material after cooling.

[0049] The temperature rise process of high-temperature sintering is controlled as follows: firstly, the temperature is raised from room temperature to 300°C...

Embodiment 3

[0052] The preparation method of this embodiment is the same as that of Example 1, but the powders obtained are respectively 100g powder a, 200g attapulgite powder b and 100g limonite powder c

[0053] Put 50-500 mg of the porous biocarrier adsorption material prepared in this example into 50 mL of secondary effluent, control the temperature at 20-50° C., and control the shaking speed at 80-160 r / min. The absorbance was measured by molybdenum antimony anti-spectrophotometry, and the removal rate of total P was calculated.

[0054] Shown by embodiment 2,3, COD and NH 3 -N can reach adsorption equilibrium within 4 hours, acidic conditions are not conducive to the adsorption of COD, NH 3 The best adsorption pH of -N is neutral, the removal rate of COD is up to 71.23%, and the removal rate of NH 3 -N removal rate is 76.56%.

[0055] It is shown from Examples 2 and 3 that when P is adsorbed, the adsorption equilibrium can be reached within 15 minutes, and the shaking speed, temp...

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Abstract

The invention discloses a preparation method of a porous biological carrier adsorption material and its application. The wheat straw powder a, attapulgite powder b and limonite powder c are uniformly mixed and then granulated by adding water, and the particle diameter is controlled at 6-6. 10mm, and then dried at 105°C to obtain pellets; the obtained pellets were placed in a high-temperature tube furnace, sintered at high temperature, and cooled to obtain a limonite-based Fe/C porous biological carrier adsorption material. The porous biological carrier adsorption material of the present invention can be used to treat the secondary effluent of the city, to COD, NH 3 ‑N and total P have better adsorption removal effect.

Description

1. Technical field [0001] The present invention relates to a preparation method and application of an adsorption material, specifically a preparation method and application of a porous biological carrier adsorption material, which belongs to the field of environmental materials and advanced treatment of sewage, and relates to the recycling and reuse of agricultural and sideline product waste . 2. Background technology [0002] my country is a large agricultural country. Wheat straw is the main agricultural waste in my country, especially in the northern region. It has been treated as waste for a long time, and it is disposed of randomly or burned in a large area. This disposal method will not only occupy a large amount of arable land, but also cause severe A series of problems such as air pollution, soil compaction and soil fertility decline. With the development of society and economy, traditional farming methods are gradually eliminated, resulting in the gradual disappeara...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F3/00
CPCB01J20/20B01J20/06B01J20/12B01J20/28054B01J2220/42B01J2220/4825C02F3/00C02F2003/001
Inventor 吴文涛蔡传伦赵伊卜刘海波陈宇男鲍腾
Owner HEFEI UNIV OF TECH
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