Method for preparing diethylenetriamine modified banana fiber adsorbent

A technology of diethylenetriamine and banana fiber, which is applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as waste of resources, reduce environmental pressure, and absorb Choose good, fast effects

Inactive Publication Date: 2018-09-18
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In China alone, more than 2 million tons of banana stems are discarded every year, causing a great waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Banana fiber pretreatment: In the reactor, add 4mol / LH 2 SO 4 : 80 mL, ammonium persulfate: 10g, mix well, then add banana fiber: 10g, soak at room temperature for 6 h, boil for 10 min, wash with deionized water until neutral after cooling, separate solid and liquid, put the solid in 200 mL of sodium bisulfite solution containing 8% concentration by mass volume, soaked at room temperature for 4 h, separated from solid and liquid, washed with water until neutral, and dried to obtain pretreated banana fiber;

[0022] (2) Preparation of epoxy banana fiber: Into the reactor, add anhydrous ethanol: 86 mL, epibromopropane: 15 mL, pretreated banana fiber: 10 g, seal it well, and keep the temperature up to 55±2°C. React at constant temperature for 4 hours, take it out and cool to room temperature, separate solid from liquid, wash with ethanol, and dry to obtain epoxy banana fiber;

[0023] (3) Preparation of diethylenetriamine modified banana fiber adsorbent: In the react...

Embodiment 2

[0025] (1) Banana fiber pretreatment: In the reactor, add 4mol / LH 2 SO 4 : 82 mL, ammonium persulfate: 8g, mix well, then add banana fiber: 12g, soak at room temperature for 6 h, boil for 10 min, wash with deionized water until neutral after cooling, separate solid and liquid, put the solid in 300 mL of sodium bisulfite solution containing 8% concentration by mass volume, soaked at room temperature for 4 h, separated from solid and liquid, washed with water until neutral, and dried to obtain pretreated banana fiber;

[0026] (2) Preparation of epoxy banana fiber: Add to the reactor separately, absolute ethanol: 90mL, epibromopropane: 14 mL, pretreated banana fiber: 9g, seal it well, and raise the temperature to 55±2℃ and keep the temperature constant After reacting for 4 h, take it out and cool it to room temperature, separate the solid from the liquid, wash with ethanol, and dry to obtain epoxy banana fiber;

[0027] (3) Preparation of diethylenetriamine modified banana fib...

Embodiment 3

[0029] (1) Banana fiber pretreatment: In the reactor, add 4mol / LH 2 SO 4 : 78 mL, ammonium persulfate: 12g, mix well, then add banana fiber: 8g, soak at room temperature for 6 h, boil for 10 min, wash with deionized water until neutral after cooling, separate solid and liquid, put the solid in 170 mL of sodium bisulfite solution containing 8% concentration by mass volume, soaked at room temperature for 4 h, separated from solid and liquid, washed with water until neutral, and dried to obtain pretreated banana fiber;

[0030](2) Preparation of epoxy banana fiber: Add to the reactor separately, absolute ethanol: 82mL, epibromopropane: 16 mL, pretreated banana fiber: 12g, seal it well, and raise the temperature to 55±2°C and keep the temperature constant React for 4h, take out and cool to room temperature, separate solid and liquid, wash with ethanol, dry to obtain epoxy banana fiber;

[0031] (3) Preparation of diethylenetriamine modified banana fiber adsorbent: In the reactor...

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Abstract

The invention discloses a method for preparing a diethylenetriamine modified banana fiber adsorbent. The method is characterized by comprising the following steps: firstly, carrying out pretreatment on banana fibers by adopting sulfuric acid and ammonium persulfate to obtain pretreated banana fibers; carrying out epoxidation treatment on the pretreated banana fibers by using epibromohydrin; finally, adding the following components in a reactor in percentage by mass: 82 to 87 percent of deionized water and 3 to 8 percent of diethylenetriamine; carrying out stirring and dissolution, and then adding 8 to 12 percent of epoxy banana fibers, wherein the sum of the mass percentage of all components is 100 percent; heating to 60(+ / -) 2 DEG C and keeping the temperature; carrying out stirring reaction for 2 hours; carrying out solid-liquid separation after reaction is carried out; carrying out washing by using deionized water and carrying out drying to obtain the diethylenetriamine modified banana fiber adsorbent. The adsorbent has the advantages of high adsorption capability on perfluorooctane sulfonate, low cost, greenness, environmental protection, high magnetism and high mechanical strength; moreover, the adsorbent can be repeatedly used for 100 times or above, and the adsorbent is easily separated.

Description

technical field [0001] The invention relates to a preparation method of a biological adsorbent, in particular to a preparation method of a diethylenetriamine modified banana fiber adsorbent and an application technology for adsorption and separation of perfluorooctane sulfonic acid, belonging to the field of adsorption materials. Background technique [0002] Perfluorooctane sulfonate (PFOS), one of the most important chemical products of the 20th century, consists of the fully fluorinated anion of a perfluorinated acidic sulfate. Fluorinated organic compounds are widely used in industrial production and consumer life. PFOS has both oleophobic and hydrophobic properties, and is widely used in the production of surface antifouling treatment agents for textiles, leather products, furniture and carpets; due to its very stable chemical properties, it is used as an intermediate for the production of coatings, foam fire extinguishing agents, Floor polishes, pesticides and termite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/36
CPCB01J20/24B01J2220/4812B01J2220/4825C02F1/286C02F2101/36C02F2101/40
Inventor 李慧芝张卫民张瑾
Owner UNIV OF JINAN
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