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Preparation method and application of surface carboxylation modified agarose magnetic microspheres

A technology of carboxylation modification and agarose microspheres, which is applied in the preparation of microspheres, chemical instruments and methods, microcapsule preparations, etc., can solve the problems of incomplete elimination of organic pollutants in printing and dyeing wastewater, complicated treatment methods, and high treatment costs. Achieve the effects of large specific surface area, easy recovery, and strong adsorption capacity

Active Publication Date: 2015-05-06
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems that the existing method for treating printing and dyeing wastewater cannot completely eliminate the organic pollutants in the printing and dyeing wastewater, the processing method is complicated, the cost is high and the processing cost is high, and a kind of surface carboxylation modified agarose magnetic Preparation method and application of microspheres

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  • Preparation method and application of surface carboxylation modified agarose magnetic microspheres
  • Preparation method and application of surface carboxylation modified agarose magnetic microspheres
  • Preparation method and application of surface carboxylation modified agarose magnetic microspheres

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specific Embodiment approach 1

[0039] Specific embodiment one: this embodiment is a kind of preparation method of the agarose magnetic microsphere of surface carboxylation modification is finished according to the following steps:

[0040] 1. Preparation of non-magnetic core agarose microspheres:

[0041] ①. Dissolving agarose in water at a temperature of 50°C to 100°C to obtain an aqueous solution of agarose with a mass fraction of 0.1% to 20% of agarose;

[0042] ②. Use agarose aqueous solution with a mass fraction of 0.1% to 20% of agarose as the water phase W; dissolve the emulsifier into an organic solvent immiscible with water to obtain an oil phase O; combine the water phase W and the oil phase O Mix to obtain a W / O emulsion; then react the W / O emulsion at a temperature of 40°C to 90°C and a rotation speed of 200r / min to 1000r / min for 1h to 5h to obtain a W / O emulsion at a temperature of 40°C to 90°C / O emulsion drops; then cool the W / O emulsion drops at a temperature of 40°C to 90°C to 15°C to 40°C...

specific Embodiment approach 2

[0070] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the iron ion mixed solution described in the step 3 is the mixed solution of ferrous chloride solution and ferric chloride solution or ferrous nitrate solution and ferric nitrate Mixture of solutions. Others are the same as the first embodiment.

specific Embodiment approach 3

[0071] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the water described in step ① is ultrapure water. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method and application of surface carboxylation modified agarose magnetic microspheres, and relates to a preparation method and application of agarose magnetic microspheres, which are used for solving the problems that existing printing and dyeing wastewater treatment methods can not completely eliminate organic pollutants in printing and dyeing wastewater, and the treatment methods are complicated, high in cost and high in treatment cost. The preparation method comprises the following steps: 1, preparing non-magnetic-core agarose microspheres; 2, carrying out activated crosslinking on the non-magnetic-core agarose microspheres; 3, preparing a mixed solution of the agarose microspheres and ferrum ions; 4, preparing agarose magnetic microspheres; 5, carrying out surface amination modification on the microspheres; and 6, carrying out surface carboxylation modification on the microspheres, so that surface carboxylation modified agarose magnetic microspheres are obtained. The invention discloses an application of the surface carboxylation modified agarose magnetic microspheres in adsorbing neutral red dyes in printing and dyeing wastewater. The invention also discloses application of the surface carboxylation modified agarose magnetic microspheres in adsorbing methyl orange dyes in printing and dyeing wastewater. According to the invention, surface carboxylation modified agarose magnetic microspheres can be obtained.

Description

technical field [0001] The invention relates to a preparation method and application of agarose magnetic microspheres. Background technique [0002] China has a large population, accounting for about 20% of the world's population. The textile industry has become a basic industry related to people's livelihood. The textile industry plays a vital role in China's modernization. The textile printing and dyeing industry is one of the industrial sectors with the largest water consumption and the largest discharge of wastewater in my country. According to incomplete statistics, domestic printing and dyeing enterprises discharge 3 to 4 million tons of wastewater every day, and the discharged wastewater contains the entrainment of the fiber raw materials itself, as well as the slurry, oil, dyes and chemical additives used in the processing process, which have the characteristics of Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), Chromaticity, High pH. If such wastewa...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30B01J20/28B01J13/02C02F1/28C02F1/58
CPCB01J20/06B01J20/24B01J20/28009B01J20/28019C02F1/281C02F1/286C02F1/288C02F2101/38C02F2103/30
Inventor 赵九蓬马丽华潘磊李垚
Owner HARBIN INST OF TECH
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