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Industrial preparation method of cationic resin based zirconium-loaded nano-composite adsorbent

A cationic resin and nanocomposite technology, applied in chemical instruments and methods, other chemical processes, etc., to achieve the effects of reducing production costs and environmental pollution, saving time and cost, and saving procedures and costs

Active Publication Date: 2018-01-19
NANJING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problems of heat transfer, mass transfer and flow when mixing a large number of production raw materials, as well as the problem of recycling and reusing reaction materials, and meets the needs of industrial preparation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] An industrial preparation method of a zirconium-loaded nanocomposite resin adsorbent, comprising the following specific steps:

[0032] (1) Cleaning and drying of raw materials

[0033] Firstly, put the commercially available macroporous cation exchange resin D001 type resin raw material into the filter car, put 2t of resin in each batch, add about 2t of methanol solution, stir intermittently at 20-45°C, let stand for 1h, and then filter by gravity Methanol solution is removed, and the filtered methanol solution is returned to the distillation system for distillation and reused;

[0034] Then transfer the resin to a vacuum desiccator and heat it to 30-60°C with a water bath while maintaining a vacuum of 0.05-0.2 MPa. When the moisture content drops to 15-30%, unload to obtain a cleaned D001 resin.

[0035] (2) Zirconium salt impregnation and drying

[0036] Add 1-2t zirconium oxychloride (commercially available) and 20% hydrochloric acid in a 6000L reactor to prepare ...

Embodiment 2

[0046] Test methods for physical and chemical indicators and application performance of zirconium-loaded nanocomposite resin adsorbent products

[0047] 1. Appearance

[0048] Carry out with the method of visual inspection, the appearance of product of the present invention is moist shape light yellow spherical particle, without the visible mechanical impurity of normal eyesight.

[0049] 2. Physical and chemical indicators

[0050] 2.1 Sample pretreatment: Wash the sample repeatedly with deionized water until the effluent is clear and transparent, and the pH is neutral.

[0051] 2.2 Nanoparticles are processed according to the method specified in JY / T 011-1996:

[0052] Nanoparticles (calculated as ≤100nm), ≥20%.

[0053] 2.3 The mass fraction of zirconium content is pretreated according to the microwave digestion method specified in HJ / T166-2004, and then the sample is measured according to the method specified in GB / T 15072.18-2008:

[0054] The mass fraction of zirconi...

Embodiment 3

[0069] An industrial preparation method of a cationic resin-based zirconium nanocomposite adsorbent, comprising the following steps:

[0070] (A) Dissolving the zirconium salt in an acidic aqueous solution to obtain a zirconium salt with a mass fraction of 20-60% (in specific applications, it can be 20%, 60%, 30%, 50%, 40%, 55%, etc.) solution, the zirconium salt is selected from zirconium oxychloride or zirconium carbonate, and the acidic aqueous solution is selected from 20-30% (in specific applications, it can be 20%, 26%, 28%, 22%, 25%, 30% %, etc.) hydrochloric acid, 20-50% (in specific applications, it can be 20%, 50%, 30%, 22%, 25%, 40%, etc.) sulfuric acid or 20-30% (in specific applications, it can be 20%, 26%, 28%, 22%, 25%, 30%, etc.) nitric acid;

[0071] (B) adding the acidic cationic resin to the zirconium salt solution of step (A) in batches under stirring, the mass ratio of the acidic cationic resin to the zirconium salt solution is 1:1.5-1:3 (in specific appl...

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Abstract

Belonging to the industrial production filed of nano-composite resin adsorbent for wastewater treatment, the invention discloses an industrial preparation method of a cationic resin based zirconium-loaded nano-composite adsorbent, and specifically relates to a reaction material recyclable industrial preparation method of a cationic resin based zirconium-loaded nano-composite adsorbent. The preparation steps include: preparing a zirconium salt solution; adding acidic cationic resin into the zirconium salt solution in batches, conducting stirring and filtering, and recycling the zirconium salt solution; performing drying; adding a NaOH solution for alkalization to obtain a cationic resin based zirconium-loaded nano-composite, and recycling the alkali liquid; adding a hydrochloric acid solution for neutralization; and performing washing. According to the industrial preparation method of the cationic resin based zirconium-loaded nano-composite adsorbent, the cleaning liquid, the zirconiumsalt solution, the alkali liquid, the acidic liquid and other materials can all be recycled, thus greatly lowering the production cost and environmental pollution. Therefore, the method is in line with the current national energy-saving and emission reduction industrial policies, and is suitable for industrial promotion.

Description

technical field [0001] The invention belongs to the field of industrial production of nano-composite resin adsorbents for wastewater treatment, and relates to an industrial preparation method of a zirconium-loaded nano-composite resin adsorbent with a strong acidic cation exchange resin as a carrier. Specifically, it relates to a reaction material that can The invention discloses an industrial preparation method of a cationic resin-based zirconium-loaded nanocomposite adsorbent for recycling. Background technique [0002] With the development of industry and mining and the acceleration of urbanization, the waste water produced in the process of heavy metal mining, smelting, processing, electroplating, tanning, etc., as well as the domestic sewage directly discharged without proper treatment, have caused heavy metal pollution in rivers, lakes and other water bodies. pollute. The heavy metals include copper, lead, nickel, cadmium, chromium, mercury, and arsenic. Even if the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30
Inventor 张炜铭潘丙才吕路张孝林赵昕花铭张延杨单超
Owner NANJING UNIV
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