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Preparation method and application of a surface organically modified vermiculite composite material

A composite material and vermiculite technology, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve the problems of low selectivity, expensive activated carbon, low regeneration efficiency, etc., and achieve strong heavy metal The effect of ion adsorption performance

Inactive Publication Date: 2020-06-09
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, activated carbon molecular sieve adsorbents mainly use physical adsorption, which has low selectivity, and high-quality activated carbon is expensive and has low regeneration efficiency.

Method used

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  • Preparation method and application of a surface organically modified vermiculite composite material
  • Preparation method and application of a surface organically modified vermiculite composite material
  • Preparation method and application of a surface organically modified vermiculite composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] a. Purification of vermiculite: add vermiculite to tap water and wash 3 times, then wash 3 times with deionized water, put it in an oven and dry it at 110°C for 8 hours, take it out, mechanically crush, grind, and sieve, and take a particle size of 30 The target ore sample is ready for use;

[0029] b. Vermiculite activation: mechanically pulverize and sieve the treated vermiculite in step a, take a 30-mesh ore sample and put it in a 250mL flask, add 1mol / L hydrochloric acid for activation, condense and reflux at a temperature of 50°C for 6h, Centrifuge at 8000 rpm, wash with water until neutral, dry in an oven at 110°C for 8 hours, take it out for later use;

[0030] c, the vermiculite mechanically crushed and sieved after the treatment in the step b, and the ore sample with a particle size of 200 objects is taken for subsequent use;

[0031] d. Preparation of adsorbent: Take 3.00g of acidified vermiculite, 1mL of water, 100mL of toluene and 3mL of 3-triethoxysilyl pr...

Embodiment 2

[0039] a. Purification of vermiculite: add vermiculite to tap water and wash 3 times, then wash 3 times with deionized water, put it in an oven and bake at 110°C for 8 hours, take it out, mechanically crush, grind, and sieve, and take a particle size of 50 The target ore sample is ready for use;

[0040] b. Activation of vermiculite: mechanically pulverize and sieve the vermiculite treated in step a, take a 50-mesh ore sample and put it in a 250mL flask, add 1mol / L hydrochloric acid for activation, condense and reflux at a temperature of 50°C for 6h, Centrifuge at 8000 rpm, wash with water until neutral, dry in an oven at 110°C for 8 hours, take it out for later use;

[0041] c, the vermiculite mechanically crushed and sieved after the treatment in the step b, and the ore sample with a particle size of 200 objects is taken for subsequent use;

[0042] d. Preparation of adsorbent: Take 3.00g of acidified vermiculite, 1mL of water, 100mL of toluene and 3mL of 3-triethoxysilyl p...

Embodiment 3

[0050] a. Purification of vermiculite: add vermiculite to tap water and wash 3 times, then wash 3 times with deionized water, put it in an oven and dry it for 10 hours at a temperature of 110°C, take it out, mechanically crush, grind, and sieve, and take a particle size of 80 The target ore sample is ready for use;

[0051] b. Activation of vermiculite: mechanically pulverize and sieve the vermiculite after treatment in step a, take the ore sample with a particle size of 80 mesh and put it in a 250mL flask, add 2mol / L hydrochloric acid for activation, condense and reflux at a temperature of 50°C for 8h, Centrifuge at 8000 rpm, wash with water until neutral, dry in an oven at 110°C for 8 hours, take it out for later use;

[0052] c, the vermiculite mechanically crushed and sieved after the treatment in the step b, and the ore sample with a particle size of 200 objects is taken for subsequent use;

[0053] d. Preparation of adsorbent: Take 4.00g of acidified vermiculite, 1mL of...

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Abstract

The invention relates to a preparation method and application of a surface organic modified vermiculite composite material. The method comprises the following steps: purifying vermiculite, activating the vermiculite and preparing an adsorbent. The composite material is prepared by adopting acrylamide solution polymerization, the whole preparation process is performed in an aqueous solution, the preparation method is simple, special process equipment is not needed, and the composite material is low in energy consumption, low in production cost, environmentally friendly and capable of easily realizing industrialization. The surface organic modified vermiculite composite material prepared by the method disclosed by the invention has high adsorption capacity on divalent lead ions; the influence of the adsorption capacity on acidity alkalinity of the solution is small, the adsorbent is capable of adsorbing heavy metal ions, hydrochloric acid can serve as a desorbing agent for removing heavy metal ions in the adsorbent and then adsorb the heavy metal ions again, and the surface organic modified vermiculite composite material has high renewability and recyclability.

Description

technical field [0001] The invention belongs to the technical field of water heavy metal treatment, and relates to a preparation method and application of a surface organically modified vermiculite composite material. Background technique [0002] China is a country with a shortage of water resources. In addition, the distribution of water resources is uneven, and the distribution of water resources does not match the distribution of population and cultivated land. Water resources have long been an important bottleneck restricting the sustainable development of China's society and economy. Water pollution has exacerbated the serious situation of water shortage, and heavy metal pollution is the most serious in water pollution. Heavy metals are different from other pollutants. Heavy metals in the environment cannot be degraded. They mainly enter animals and plants through air, water, soil, etc., and enter the human body through food chain amplification and enrichment. Heavy me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/20
CPCB01J20/12B01J20/22B01J20/261B01J20/265C02F1/288C02F2101/20
Inventor 王传义顾士庆王兰
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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