Preparation method of cellulose microsphere adsorbent

A technology of cellulose microspheres and adsorbents, applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal oxides/hydroxides, etc., can solve the problems of large discharge, deep color, treatment and recovery Difficulty and other problems, to achieve the effect of moderate particle size, good adsorption performance, and large total surface area

Inactive Publication Date: 2019-01-15
管敏富
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The composition of dye wastewater is complex, the color is deep, the discharge volume is large, and it is extremely difficult to treat and recycle
In addition, many production wastewaters contain heavy metal ions, which have caused great adverse effects on the environment, water resources, and human health after discharge. The preparation of effective wastewater treatment substances is the focus of research.

Method used

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  • Preparation method of cellulose microsphere adsorbent
  • Preparation method of cellulose microsphere adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Step 1. Rinse the cotton stalks with distilled water, dry them and crush them mechanically to 50 mesh, add a mixture of xylene and ethanol to the cotton stalk powder, the ratio of solid to liquid is 1:10 (g / mL), wherein xylene The volume ratio with ethanol is 3:2, put it in a boiling water bath to react for 6h, take it out and wash it with ethanol three times, filter it with suction, add 0.1mol / L hydrochloric acid solution, the ratio of solid to liquid is 1:12 (g / mL), 90 ℃ water bath treatment for 1.5h, then add deionized water, the ratio of solid to liquid is 1:20 (g / mL), 85°C, 200r / min water bath reaction for 3h, suction filtration, dry at 60°C for later use;

[0022] Step 2. Add solution A to the pretreated cotton stalk powder in step 1, the ratio of solid to liquid is 1:20 (g / mL), solution A is 0.6mL hydrogen peroxide and 3g sodium hydroxide dissolved in 100mL deionized It is mixed with water, reacted at 90°C for 4 hours, filtered with suction, and dried at 60°C, th...

Embodiment 2

[0027] Step 1. Rinse the cotton stalks with distilled water, dry them and crush them mechanically to 50 mesh, add a mixture of xylene and ethanol to the cotton stalk powder, the ratio of solid to liquid is 1:10 (g / mL), wherein xylene The volume ratio with ethanol is 3:2, put it in a boiling water bath to react for 6h, take it out and wash it with ethanol three times, filter it with suction, add 0.1mol / L hydrochloric acid solution, the ratio of solid to liquid is 1:12 (g / mL), 90 ℃ water bath treatment for 1.5h, then add deionized water, the ratio of solid to liquid is 1:20 (g / mL), 85°C, 200r / min water bath reaction for 3h, suction filtration, dry at 60°C for later use;

[0028] Step 2. Add solution A to the pretreated cotton stalk powder in step 1, the ratio of solid to liquid is 1:20 (g / mL), solution A is 0.2mL hydrogen peroxide and 8g sodium hydroxide dissolved in 100mL deionized Mix in water, react at 60°C for 4 hours, filter with suction, dry at 60°C, add solution B to the ...

Embodiment 3

[0033] Step 1. Rinse the cotton stalks with distilled water, dry them and crush them mechanically to 50 mesh, add a mixture of xylene and ethanol to the cotton stalk powder, the ratio of solid to liquid is 1:10 (g / mL), wherein xylene The volume ratio with ethanol is 3:2, put it in a boiling water bath to react for 6h, take it out and wash it with ethanol three times, filter it with suction, add 0.1mol / L hydrochloric acid solution, the ratio of solid to liquid is 1:12 (g / mL), 90 ℃ water bath treatment for 1.5h, then add deionized water, the ratio of solid to liquid is 1:20 (g / mL), 85°C, 200r / min water bath reaction for 3h, suction filtration, dry at 60°C for later use;

[0034] Step 2: Add solution A to the pretreated cotton stalk powder in step 1, the ratio of solid to liquid is 1:20 (g / mL), solution A is 0.5mL hydrogen peroxide and 4g sodium hydroxide dissolved in 100mL deionized Mix in water, react at 80°C for 4 hours, filter with suction, dry at 60°C, add solution B to the ...

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Abstract

The invention discloses a preparation method of a cellulose microsphere adsorbent, and relates to the field of chemical engineering and environmental protection. The preparation method of the cellulose microsphere adsorbent comprises the steps that cotton straw is cleaned, drying and smashing are performed and then mixed liquid of xylene and ethyl alcohol is added, the mixture reacts in a boiled water bath, and is subjected to washing and suction filtration, a hydrochloric acid solution is added to treat the product, deionized water is added to conduct a water bath reaction, suction filtrationis conducted, and the product is dried for stand-by application; a solution A is added into the pre-treated cotton straw powder to react mutually, after suction filtration and drying are conducted, asolution B is added to react with the product, the product is washed and dried to obtain cotton straw cellulose, the cotton straw cellulose is prepared to be a water solution for stand-by application; semen ricini oil and twain 80 are added into a beaker and stirred for 20 minutes, the cotton straw cellulose water solution is added into the beaker to react with the semen ricini oil and twain 80,and then epoxy chloropropane is added into the beaker to react with mixture; and the oil phase is removed from the reacted system, the product is washed and dried, and the cellulose microsphere adsorbent is obtained. The prepared cellulose microsphere adsorbent has the good adsorption effect on active blue M and metal ions Cr<6+> and Cu<2+> in the wastewater, and has the wide application prospect.

Description

technical field [0001] The invention relates to the fields of chemical industry and environmental protection, in particular to a preparation method of a cellulose microsphere adsorbent. Background technique [0002] Cellulose is the oldest and most abundant natural polymer on the earth, and it is the most precious natural renewable resource that is inexhaustible for human beings. Cellulose has the advantages of renewability, biodegradability, good biocompatibility, and non-toxicity. Modification of cellulose, introduction of some functional groups, preparation of adsorbent with a certain shape, can be widely used in wastewater treatment. my country's printing and dyeing textile industry discharges a large amount of dye wastewater every year, causing serious pollution to the environment. The composition of dye wastewater is complex, the color is deep, and the discharge volume is large, so it is extremely difficult to treat and recycle. In addition, many production wastewat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/28B01J20/30B01J20/26C02F1/28C02F101/30
CPCB01J20/267B01J20/28021B01J20/28057C02F1/28C02F1/285C02F2101/308
Inventor 管敏富
Owner 管敏富
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