Preparation method of porous cellulose acetate micropellet adsorbent

Abstract

The invention discloses a preparation method of a porous cellulose acetate micropellet adsorbent. The preparation method comprises the following steps: extracting cellulose acetate in a waste cigarette end filter tip by virtue of a soxhlet extraction method, facilitating the reaction between the processed cellulose acetate and calcium carbonate in an acetone solution to obtain prototype cellulose acetate adsorbing micropellets, and then dispersing and molding the prototype cellulose acetate adsorbing micropellets by using an ultrasonic washer to obtain the cellulose acetate adsorption micropellet adsorbent. According to the preparation method of the porous cellulose acetate micropellet adsorbent, firstly the cellulose acetate is extracted from the cigarette end filter tip by virtue of the soxhlet exstraction method, then the porous cellulose acetate micropellet adsorbent is prepared by using a reverse-phase suspension dispersion method, and the prepared porous cellulose acetate micropellet adsorbent has good adsorption effect on heavy metal ions such as Fe<2+> and Cd<2+>. According to the preparation method, the raw material is likely to get, and waste is used, so that not only is the preparation cost of a product decreased, but also the environmental pollution caused by the waste cigarette end is reduced.

Description

technical field

[0001] The invention relates to a method for preparing an adsorbent, in particular to a method for preparing a porous cellulose acetate microsphere adsorbent. Background technique

[0002] Cigarette butts, also known as cigarette butts and cigarette butts, refer to the part of filter cigarettes that cannot be smoked after smoking, because there are nicotine and e-liquid in the tobacco leaves, and the function of the cigarette butt is to filter nicotine e-liquid. The recycling and reuse of cigarette butts in the world is still only in the research stage, and there is no relevant mature technology, but cigarette butts cause great pollution to the environment. The Italian National Energy Agency once published a research report saying that about 845,000 tons of cigarette butts are discarded globally a year, which contain about 7,800 tons of dangerous chemicals, about 324 tons of nicotine, and 1,800 tons of volatile substances such as benzene, toluene, acetone and...

Examples

Embodiment 1

[0021] A preparation method of porous cellulose acetate microsphere adsorbent, specifically comprising the steps of:

[0022] Step 1, extract the cellulose acetate in the filter by Soxhlet extraction: collect 100 cigarette butts, remove the remaining shredded tobacco in the cigarette butts, cut the fiber stick wrapping paper with a blade, take out the fiber stick (reject the burnt fiber stick), Obtain 20 grams of fiber rods; divide it into multiple times, wrap the fiber rods with filter paper, put them into the leaching column of the Soxhlet apparatus, add 100mL95% industrial ethanol in the distillation flask, connect to the condenser, heat to reflux on the heating mantle, and heat The reaction temperature of reflux is 100°C, carry out immersion and extraction, observe the color of ethanol in the overflow tube, stop the reaction when the color of ethanol changes from dark yellow to colorless, the time is about 2-3 hours; take out the cellulose diacetate rod full of ethanol and ...

technical field

[0001] The invention relates to a method for preparing an adsorbent, in particular to a method for preparing a porous cellulose acetate microsphere adsorbent. Background technique

[0002] Cigarette butts, also known as cigarette butts and cigarette butts, refer to the part of filter cigarettes that cannot be smoked after smoking, because there are nicotine and e-liquid in the tobacco leaves, and the function of the cigarette butt is to filter nicotine e-liquid. The recycling and reuse of cigarette butts in the world is still only in the research stage, and there is no relevant mature technology, but cigarette butts cause great pollution to the environment. The Italian National Energy Agency once published a research report saying that about 845,000 tons of cigarette butts are discarded globally a year, which contain about 7,800 tons of dangerous chemicals, about 324 tons of nicotine, and 1,800 tons of volatile substances such as benzene, toluene, acetone and...

Examples

Embodiment 1

[0021] A preparation method of porous cellulose acetate microsphere adsorbent, specifically comprising the steps of:

[0022] Step 1, extract the cellulose acetate in the filter by Soxhlet extraction: collect 100 cigarette butts, remove the remaining shredded tobacco in the cigarette butts, cut the fiber stick wrapping paper with a blade, take out the fiber stick (reject the burnt fiber stick), Obtain 20 grams of fiber rods; divide it into multiple times, wrap the fiber rods with filter paper, put them into the leaching column of the Soxhlet apparatus, add 100mL95% industrial ethanol in the distillation flask, connect to the condenser, heat to reflux on the heating mantle, and heat The reaction temperature of reflux is 100°C, carry out immersion and extraction, observe the color of ethanol in the overflow tube, stop the reaction when the color of ethanol changes from dark yellow to colorless, the time is about 2-3 hours; take out the cellulose diacetate rod full of ethanol and ...

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