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Preparation method and application of honeycomb-shaped renewable porous attapulgite adsorbent

An attapulgite and honeycomb-shaped technology, which is applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal oxides/hydroxides, etc., can solve the problem of difficult recycling of powdery attapulgite and granular attapulgite Large resistance, long molding process, etc., to achieve the effect of short molding process, small mass transfer resistance, and smooth molding process

Pending Publication Date: 2021-07-27
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems that powder attapulgite is difficult to recycle and reuse in the actual use process, the current molding process is long, chemical additives are added, and the resistance of granular attapulgite is large, the present invention uses natural attapulgite as raw material and adds a single group Divide the pore-enlarging agent, and press it into a honeycomb-shaped renewable porous attapulgite through a honeycomb mold designed by itself

Method used

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  • Preparation method and application of honeycomb-shaped renewable porous attapulgite adsorbent
  • Preparation method and application of honeycomb-shaped renewable porous attapulgite adsorbent
  • Preparation method and application of honeycomb-shaped renewable porous attapulgite adsorbent

Examples

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Effect test

Embodiment 1

[0030] Weigh 0.45 g of natural attapulgite and 0.05 g of methyl cellulose, put them into a mortar and grind them thoroughly for 1 hour, then pour the powder into a self-designed honeycomb mold, and stand at a pressure of 7 MPa for 2 seconds to obtain a honeycomb attapulgite. The honeycomb attapulgite sheet was put into a muffle furnace and heated to 700 °C at a heating rate of 2 °C / min, calcined for 4 h, and naturally cooled to room temperature to obtain a honeycomb renewable porous attapulgite adsorbent, which was defined as XPal-1.

Embodiment 2

[0032] Weigh 0.4 g of natural attapulgite and 0.1 g of methyl cellulose, put them into a mortar and grind them thoroughly for 1 hour, then pour the powder into a self-designed honeycomb mold, and stand at a pressure of 7 MPa for 2 seconds to obtain a honeycomb attapulgite. The honeycomb attapulgite sheet was put into a muffle furnace, heated to 700°C at a heating rate of 2°C / min, calcined for 4 hours, and naturally cooled to room temperature to obtain a honeycomb-like renewable porous attapulgite adsorbent, which was defined as XPal-2.

Embodiment 3

[0034] Weigh 0.35g of natural attapulgite and 0.15g of methyl cellulose, put them into a mortar and grind them thoroughly for 1 hour, then pour the powder into a self-designed honeycomb mold, and stand at a pressure of 7Mpa for 2s to obtain a honeycomb attapulgite. The honeycomb attapulgite sheet was put into a muffle furnace, heated to 700°C at a heating rate of 2°C / min, calcined for 4 hours, and naturally cooled to room temperature to obtain a honeycomb-like renewable porous attapulgite adsorbent, which was defined as XPal-3.

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Abstract

The invention belongs to the technical field of environmental protection, and particularly relates to a preparation method and application of a honeycomb-shaped renewable porous attapulgite adsorbent. According to the invention, a pore-enlarging agent and original attapulgite powder are mixed and ground and then are pressed and calcined by a designed mold to form the honeycomb-shaped renewable porous attapulgite adsorbent; the adsorbent shows excellent performance of adsorbing and removing dye in water when used for water pollution purification; and the adsorbent has good adsorption and removal effects on dyes such as fuchsin, malachite green, crystal violet, rhodamine B and the like in water, and does not cause secondary chemical pollution, so the adsorbent is proved to have good universality.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a preparation method of a honeycomb regenerated porous attapulgite adsorbent and its application in water pollution purification. Background technique [0002] With the rapid development of economy, serious environmental pollution has been caused. Compared with other types of pollution, water pollution covers a wide range and has far-reaching impacts on human health and ecological balance. The use of adsorption technology to remove pollutants in water is widely used in industrial production due to its advantages of fast, efficient, simple process, and convenient operation. However, although commonly used adsorbents such as activated carbon have good adsorption effects, their practical applications are limited due to their shortcomings such as high price, low temperature resistance, and difficult regeneration. Therefore, it is of great significance t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/28B01J20/12B01J20/30C02F1/28C02F101/30C02F101/34C02F101/36C02F101/38
CPCB01J20/28045B01J20/12B01J20/3064C02F1/281C02F2101/308C02F2101/40C02F2101/38C02F2101/34C02F2101/36
Inventor 王少莽关媛李忠玉管子琦许涛陈张驰
Owner CHANGZHOU UNIV
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