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A method for preparing cationic cellulose ether flocculant based on cigarette butt modification

A cationic cellulose and flocculant technology, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as environmental pollution and achieve good application prospects

Active Publication Date: 2020-01-10
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the treatment of cigarette butts is equivalent to domestic waste, mainly through incineration and landfill, causing serious environmental pollution. Among them, water pollution has the most direct impact on human beings. The compounds in cigarette butts can directly pollute the soil. If they are leached by rainwater , pollutants are also carried to surface water and groundwater aquatic environments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: A method for preparing a cationic cellulose ether flocculant based on the modification of cigarette butts, the specific operations are as follows:

[0020] (1) Preparation process of cigarette butts

[0021] Separating the collected cigarette butts, obtaining the paper and the filter part, soaking and washing the paper and the filter part with deionized water, after removing impurities, air-drying, wherein the total weight of the paper and the filter is 15g, according to the deionized water and If the cigarette butt volume to mass ratio is 100mL:1g, the required deionized water is 1500mL. After cleaning, the raw material is air-dried, and then the raw material is mechanically ground to obtain a qualified raw material that has passed through a 20-mesh but not more than 40-mesh standard screen;

[0022] (2) Cellulose extraction process

[0023] The cellulose extraction conditions are as follows: the mass fraction of sodium hydroxide solution is 1%, the amount ...

Embodiment 2

[0034] Example 2: A method for preparing a cationic cellulose ether flocculant based on the modification of cigarette butts, the specific operations are as follows:

[0035] (1) Preparation process of cigarette butts

[0036] Separating the collected cigarette butts to obtain the paper and the filter part, soaking and washing the paper and the filter part with deionized water, after removing impurities, air-drying, wherein the total weight of the paper and the filter is 3g, according to the deionized water and If the cigarette butt volume to mass ratio is 500mL:1g, the required deionized water is 1500mL. After cleaning, the raw material is air-dried, and then the raw material is mechanically ground to obtain a qualified raw material that has passed through a 50-mesh but no more than 70-mesh standard screen;

[0037] (2) Cellulose extraction process

[0038] The cellulose extraction conditions are as follows: the mass fraction of sodium hydroxide solution is 5%, the amount of ...

Embodiment 3

[0049] Example 3: A method for preparing a cationic cellulose ether flocculant based on the modification of cigarette butts, the specific operations are as follows:

[0050] (1) Preparation process of cigarette butts

[0051] Separate the collected cigarette butts to obtain the paper and the filter part, soak and wash the paper and the filter part with deionized water, after removing impurities, air-dry, wherein the total weight of the paper and the filter is 1.5g, according to the weight of the deionized water If the volume mass ratio of the cigarette butt is 1000mL:1g, the required deionized water is 1500mL. After cleaning, the raw material is air-dried, and then the raw material is mechanically ground to obtain a qualified raw material that has passed through a standard screen of 80 mesh but not more than 100 mesh. ;

[0052] (2) Cellulose extraction process

[0053] The cellulose extraction conditions are as follows: the mass fraction of sodium hydroxide solution is 10%,...

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Abstract

The invention discloses a method for preparing high-substitution water-soluble cellulose ether flocculants from cigarette butts by means of modification. The cigarette butts are tobacco waste and areused as cellulose extraction raw materials. The method includes separating paper and filter tips in cigarette ends, soaking and washing the cigarette ends, carrying out air drying on the cigarette ends, and then grinding and sieving the cigarette ends to obtain qualified raw materials; carrying out alkaline hydrolytic treatment on the qualified raw materials and then selectively oxidizing celluloses by the aid of periodate to obtain cellulose dialdehyde derivatives; carrying out cationic etherification modification on the cellulose dialdehyde derivatives and acethydrazide trimethyl ammonium chloride, precipitating products by the aid of isopropyl alcohol, centrifugally separating the products, washing the products and carrying out cold drying on the products to obtain water-soluble high-cationization cellulose ether. The method has the advantages that products prepared by the aid of the method can be used as flocculants and can be used for treating feedwater, wastewater and circulatingwater; the products are high in flocculating velocity and easy to filter, and the turbidity of the wastewater can be effectively lowered; the products can be degraded, and accordingly secondary pollution can be prevented.

Description

technical field [0001] The invention relates to a method for modifying and preparing a water-soluble cellulose ether flocculant with a high degree of substitution by using tobacco waste butts as raw materials for cellulose extraction, and belongs to the technical field of natural polymer modified materials. Background technique [0002] According to the World Health Organization (WHO), there are currently about 1.1 billion smokers in the world. It is estimated that the amount of cigarette butts produced by smoking in China will exceed 180 million per year, which means that cigarette butts may become a huge amount of solid waste in the world. At present, the treatment of cigarette butts is equivalent to domestic waste, mainly through incineration and landfill, causing serious environmental pollution. Among them, water pollution has the most direct impact on human beings. The compounds in cigarette butts can directly pollute the soil. If they are leached by rainwater , polluta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B11/145C08B15/04C02F1/52
CPCC02F1/5263C08B11/145C08B15/04
Inventor 顾惠明高欣
Owner KUNMING UNIV OF SCI & TECH
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