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Bagasse composite soil conditioner preparation method

A technology of soil improver and bagasse, which is applied in the direction of soil conditioning materials, chemical instruments and methods, fertilizer mixtures, etc., can solve the problems of high cost of soil pollution, difficult recovery, long cycle, etc., and achieve no secondary environmental pollution, products The effect of reliable performance and stable product performance

Inactive Publication Date: 2015-03-04
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once soil pollution occurs, it is difficult to recover only by cutting off the pollution source
Generally speaking, the cost of soil pollution control is high, the cycle is long, and it is difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) First pass bagasse through a 100-mesh sieve, then add sodium hydroxide solution to the sieved bagasse, then cook at 120°C for 1 hour, then wash with distilled water until neutral, then dry at 105°C, and cool to room temperature for later use;

[0022] (2) Weigh the bagasse and starch treated in step (1), the weight ratio of bagasse and starch is 1:1, then mix evenly, then add acrylic acid, the weight ratio of acrylic acid and bagasse is 7:1, then add hydrogen Sodium to 60% neutralization degree, then add ammonium persulfate, N,N'-methylenebisacrylamide, kaolin and distilled water, the amount of ammonium persulfate added is 1% of the weight of acrylic acid, N,N'-methylene bisacrylamide The amount of bisacrylamide added is 0.10% of the weight of acrylic acid, the amount of kaolin added is 4% of the weight of acrylic acid, the volume-to-weight ratio of distilled water to acrylic acid is 30:11ml / g, and then placed in a 65°C constant temperature water bath and stirred fo...

Embodiment 2

[0026] (1) First pass bagasse through a 100-mesh sieve, then add sodium hydroxide solution to the sieved bagasse, then cook at 120°C for 1 hour, then wash with distilled water until neutral, then dry at 105°C, and cool to room temperature for later use;

[0027] (2) Weigh the bagasse and starch treated in step (1), the weight ratio of bagasse and starch is 5:1, then mix evenly, then add acrylic acid, the weight ratio of acrylic acid and bagasse is 15:1, then add hydrogen Sodium to neutralization degree of 70%, then add ammonium persulfate, N,N'-methylene bisacrylamide, kaolin and distilled water, the amount of ammonium persulfate added is 2% of the weight of acrylic acid, N,N'-methylene bisacrylamide The amount of bisacrylamide added is 0.40% of the weight of acrylic acid, the amount of kaolin added is 8% of the weight of acrylic acid, the volume-to-weight ratio of distilled water to acrylic acid is 50:11ml / g, and then placed in a 65°C constant temperature water bath and stirr...

Embodiment 3

[0031] (1) First pass bagasse through a 100-mesh sieve, then add sodium hydroxide solution to the sieved bagasse, then cook at 120°C for 1 hour, then wash with distilled water until neutral, then dry at 105°C, and cool to room temperature for later use;

[0032] (2) Weigh the bagasse and starch treated in step (1), the weight ratio of bagasse and starch is 3:1, then mix evenly, then add acrylic acid, the weight ratio of acrylic acid and bagasse is 11:1, then add hydrogen Sodium to 65% neutralization degree, then add ammonium persulfate, N,N'-methylenebisacrylamide, kaolin and distilled water, the amount of ammonium persulfate added is 1.5% of the weight of acrylic acid, N,N'-methylenebisacrylamide The amount of bisacrylamide added is 0.25% of the weight of acrylic acid, the amount of kaolin added is 6% of the weight of acrylic acid, the volume-to-weight ratio of distilled water to acrylic acid is 40:11ml / g, and then placed in a 65°C constant temperature water bath and stirred ...

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Abstract

The present invention discloses a bagasse composite soil conditioner preparation method, wherein the main byproduct bagasse of sugar production from sugarcane is adopted as a raw material, and is combined with starch and kaolin through a graft copolymerization method so as to prepare the soil conditioner having high heavy metal adsorption capacity, wherein the bagasse contains a lot of cellulose, such that the application of the bagasse to prepare the soil repair agent has economic values and significant environmental significance. According to the present invention, the main byproduct bagasse of the sugar production industry and the natural products such as starch and kaolin are adopted as the raw materials, the characteristics of reasonable process route and reliable product performance are provided, the prepared composite material has the high heavy metal adsorption and the high soil repair capability, the method has advantages of increase of the comprehensive utilization of the sugar mill byproduct, no secondary pollution and the like, and the soil repair agent prepared by using the method can effectively absorb heavy metals in the soil, wherein the cadmium adsorption rate achieves more than 45%, and the copper adsorption rate achieves more than 52%.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a preparation method of a bagasse composite soil conditioner. Background technique [0002] The "National Soil Pollution Survey Bulletin" jointly issued by the Ministry of Environmental Protection and the Ministry of Land and Resources on April 17, 2014 pointed out that the rate of point pollutants in cultivated land soil in my country exceeds the standard rate of 19.4%, and the main pollutant types are mainly inorganic types. Air type is next, compound type pollution has a smaller proportion, and the number of points exceeding the standard of inorganic pollutants accounts for 82.8% of all points exceeding the standard. From the perspective of pollutants exceeding the standard, the rate of exceeding the standard of inorganic pollutants such as cadmium, arsenic, and copper was 7.0%, 2.7%, and 2.1%, respectively. [0003] Compared with water and air pollution, soil pollut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40
CPCC09K17/40
Inventor 陆登俊马步李凯梁欣泉黄琳娟陆海勤李坚斌刘桂云
Owner GUANGXI UNIV
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