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Preparation method of dimercaptosuccinic acid modified porous magnetic loofah sponge composite microsphere

A technology of dimercaptosuccinic acid and composite microspheres, which is applied in the field of materials, can solve the problems of difficult solid-liquid separation of adsorbents and hinder the progress of adsorption technology, and achieve good physical and chemical stability, excellent mechanical strength, and easy control of conditions Effect

Inactive Publication Date: 2017-12-26
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, there are many shortcomings in the adsorption method. Among them, the difficulty of solid-liquid separation of the adsorbent has always been a major problem hindering the progress of adsorption technology. Therefore, in recent years, many scholars have devoted themselves to the study of magnetic adsorbents and applied them to water pollution. substance removal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Loofah pretreatment: In the reactor, add 6mol / L HCl: 72 mL, potassium permanganate: 12g, mix well, then add loofah powder: 16g, soak at room temperature for 8 hours, then boil for 20 minutes, After cooling, wash with deionized water to neutrality, separate solid and liquid, put the solid into 400 mL containing 2.0% NaOH, 1.0% Na 2 SiO 3 , 0.5% sodium sulfide mixed aqueous solution, react at a constant temperature of 100 ℃ water bath for 60 minutes, cool to room temperature, separate solid and liquid, wash with water until neutral, and dry to obtain pretreated loofah;

[0026] (2) Preparation of porous magnetic loofah composite microspheres: In the reactor, respectively add, 1-ethyl-3 methylimidazole hydrosulfate: 68g, pretreatment loofah: 15g, the temperature is raised to 100 ℃ constant temperature, Stir and react for 8h, cool to room temperature, add cellulase: 2g, raise the temperature to 65±2℃, keep constant temperature, stir, react for 10h, boil for 15min, cool to r...

Embodiment 2

[0030] (1) Loofah pretreatment: In the reactor, add 6mol / L HCl: 70 mL, potassium permanganate: 11g, mix well, then add loofah powder: 19g, soak at room temperature for 8 hours, then boil for 20 min, After cooling, wash with deionized water to neutrality, separate solid and liquid, put the solid into 380 mL containing 2.0% NaOH, 1.0% Na 2 SiO 3 , 0.5% sodium sulfide mixed aqueous solution, react at a constant temperature of 100 ℃ water bath for 60 minutes, cool to room temperature, separate solid and liquid, wash with water until neutral, and dry to obtain pretreated loofah;

[0031] (2) Preparation of porous magnetic loofah composite microspheres: In the reactor, add 1-ethyl-3 methylimidazole hydrosulfate: 66g, pretreatment loofah: 18g, and the temperature is raised to 100℃. Stir and react for 8h, cool to room temperature, add cellulase: 3g, raise the temperature to 65±2℃, keep constant temperature, stir, react for 10h, boil for 15min, cool to room temperature, add starch: 7g, nan...

Embodiment 3

[0035] (1) Loofah pretreatment: In the reactor, add 6mol / L HCl: 75 mL, potassium permanganate: 8g, mix well, then add loofah powder: 17g, soak at room temperature for 8 hours, then boil for 20 minutes, After cooling, wash with deionized water to neutrality, separate solid and liquid, put the solid into 430 mL containing 2.0% NaOH and 1.0% Na by mass and volume. 2 SiO 3 , 0.5% sodium sulfide mixed aqueous solution, react at a constant temperature of 100 ℃ water bath for 60 minutes, cool to room temperature, separate solid and liquid, wash with water until neutral, and dry to obtain pretreated loofah;

[0036] (2) Preparation of porous magnetic loofah composite microspheres: In the reactor, add 1-ethyl-3 methylimidazole sulfohydrogenate: 72g, pretreatment loofah: 12g, and the temperature is raised to 100°C. Stir and react for 8h, cool to room temperature, add cellulase: 1g, raise the temperature to 65±2℃, keep constant temperature, stir, react for 10h, boil for 15min, cool to room t...

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PUM

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Abstract

The invention discloses a preparation method of a dimercaptosuccinic acid modified porous magnetic loofah sponge composite microsphere. The method is characterized in that firstly, loofah sponge powder is dissolved in 1-ethyl-3 methylimidazole thiocyanate under the effect of cellulase; nanometer bismuth ferrite is added; a porous magnetic loofah sponge composite microsphere is obtained through preparation; then, the surface of the porous magnetic loofah sponge composite microsphere is subjected to amination to obtain an aminated porous magnetic loofah sponge composite microsphere; finally, the following ingredients in mass percentage concentration: 60 to 68 percent of de-ionized water, 4 to 8 percent of sodium hydroxide and 10 to 15 percent of dimercaptosuccinic acid are added into a reactor; stirring is performed for dissolution; 15 to 20 percent of aminated porous magnetic loofah sponge composite microsphere reacts for 1h at the constant temperature being 70+ / -2 DEG C; solid-liquid separation and drying are performed to obtain the dimercaptosuccinic acid modified porous magnetic loofah sponge composite microsphere. An adsorbent has high adsorption capacity on cobalt and nickel; the cost is low; the green and environment-friendly effects are achieved; the magnetism is realized; the mechanical strength is high; the adsorbent can be repeatedly used for 10 times or higher; the adsorbent can be easily separated.

Description

Technical field [0001] The invention relates to a preparation method of a biomagnetic adsorbent, in particular to a preparation method of dimercaptosuccinic acid modified porous magnetic loofah complex microspheres and an application technology for the adsorption and separation of cobalt and nickel, belonging to the field of materials. Background technique [0002] Nickel in natural water is often dissolved in water in the form of halides, nitrates, sulfates, and certain organic and inorganic complexes. Soluble nickel ions in water can combine with water to form hydrated ions. The raw material used for nickel plating in industry is nickel sulfate or nickel chloride. The soluble nickel ions discharged with wastewater are stable in acidic medium, and nickel hydroxide Ni(OH)2 precipitates in alkaline medium, so it is commonly used Alkali process treatment of nickel-containing industrial wastewater. The concentration of nickel in wastewater from different industries varies greatly....

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F101/20
CPCB01J20/0229B01J20/22B01J20/24B01J20/28009B01J20/28021C02F1/286C02F2101/103C02F2101/20
Inventor 李慧芝朱学英翟殿棠
Owner UNIV OF JINAN
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