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Method for modifying attapulgite by using biological fermentation process

A biological fermentation method, attapulgite technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of harsh modification conditions, resource consumption, and many chemical raw materials, etc., to increase specific surface area, improve adsorption, and adsorption. Sex-enhancing effect

Inactive Publication Date: 2017-07-25
MINGGUANG FEIZHOU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the modification conditions are harsh, and more chemical raw materials are used, which consumes resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] On the one hand, this embodiment provides a method for modifying the attapulgite using the biological fermentation method. The method for modifying the attapulgite specifically includes the following steps:

[0062] (1) Pretreatment of sludge by anaerobic fermentation

[0063] Put into the anaerobic fermentation tank the sludge raw material accounting for 80% of its volume, and add the microbial flora of 1 / 9 of the dry weight of the sludge raw material, the microbial flora consists of thermophilic bacteria ATO7-1, hydrogen-producing bacteria (Clostridium bifermentans), actinomycete (Actinomycete), while adding cellulase (Cellulase) and pronase (Pronase E), the total weight of the added cellulase (Cellulase) and pronase (Pronase E) is the sludge 1 / 8 of the dry weight of the raw material, the temperature in the anaerobic fermentation tank is controlled at 50-60 ° C, the pH value is adjusted between 5.6-6.8, and the agitator is turned on for stirring, and the fermentation ...

Embodiment 2

[0078] On the one hand, this embodiment provides a method for modifying the attapulgite using the biological fermentation method. The method for modifying the attapulgite specifically includes the following steps:

[0079] (1) Pretreatment of sludge by anaerobic fermentation

[0080] Put 70% of the sludge raw material into the anaerobic fermentation tank, and add 1 / 8 of the microbial flora of the dry weight of the sludge raw material. Composition of Actinomycete, Cellulase and Pronase E were added at the same time, the total weight of Cellulase and Pronase E added was the dry weight of the sludge raw material 1 / 10, control the temperature in the anaerobic fermentation tank to 50-60°C, adjust the pH value between 5.6-6.8, and turn on the agitator to stir, and ferment for 2 days to obtain the sludge after fermentation treatment;

[0081] (2), mixed treatment

[0082] Take the attapulgite clay with a weight ratio of 15:1 and the sludge after fermentation treatment in step (1), ...

Embodiment 3

[0095] On the one hand, this embodiment provides a method for modifying the attapulgite using the biological fermentation method. The method for modifying the attapulgite specifically includes the following steps:

[0096] (1) Pretreatment of sludge by anaerobic fermentation

[0097] Put into the anaerobic fermentation tank the sludge raw material accounting for 75% of its volume, and add the microbial flora of 1 / 9 of the dry weight of the sludge raw material, the microbial flora consists of thermophilic bacteria ATO7-1, hydrogen-producing bacteria (Clostridium bifermentans), actinomycete (Actinomycete), while adding cellulase (Cellulase) and pronase (Pronase E), the total weight of the added cellulase (Cellulase) and pronase (Pronase E) is the sludge 1 / 9 of the dry weight of raw materials, control the temperature in the anaerobic fermentation tank to 50-60 °C, adjust the pH value between 5.6-6.8, and turn on the agitator to stir, ferment for 2-3 days, that is, after fermentat...

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Abstract

The invention belongs to the technical field of attapulgite processing, and provides a method for modifying attapulgite by using a biological fermentation process. The method comprises the steps of carrying out pretreatment on sludge by using an anaerobic fermentation method: putting a sludge raw material into an anaerobic fermentation tank, adding a microbial flora consisting of thermophilic bacteria ATO7-1, hydrogen-producing bacteria and actinobacteria into the anaerobic fermentation tank, simultaneously adding cellulase and pronase, controlling the temperature to be 50-60 DEG C and the pH value to be 5.6-6.8, stirring, and fermenting for 2-3 days; mixing attapulgite clay and the sludge subjected to fermentation treatment, and stirring; burying the mixed material in a stacking way for 2-7 days at the temperature of 20-30 DEG C; drying the mixed material, which is buried in the stacking way, at the temperature of 80-120 DEG C until the water content of the mixed material is reduced to 3% or below. The method provided by the invention is mild in conditions, simple in technological requirements, less in energy consumption and low in requirements for equipment, and improves the absorbability of the attapulgite.

Description

technical field [0001] The invention belongs to the technical field of attapulgite processing, and in particular relates to a method for modifying attapulgite by using a biological fermentation method. Background technique [0002] Attapulgite is a common heavy metal inorganic passivator. Attapulgite, also known as palygorskite, is a layer chain structure of hydrous magnesium-rich aluminum silicate clay minerals, belonging to the sepiolite group in mineralogy. Because the microstructure under the electron microscope is needle-like and rod-like, it is called attapulgite. Attapulgite is widely used in chemical industry, light industry, agriculture, textile, building materials, geological exploration, casting, silicate industry, atomic energy industry, environmental protection and pharmaceutical due to its special fiber structure, unusual colloid, adsorption and decolorization properties. In other fields, it has the laudatory titles of "king of a thousand soils" and "universa...

Claims

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Application Information

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IPC IPC(8): B01J20/12B01J20/30
Inventor 胡睿顾文宇
Owner MINGGUANG FEIZHOU NEW MATERIAL
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