Sodium alginate-based loaded nano-pyrophanite/lignite-based active coke hydrogel and preparation method thereof

A technology of sodium alginate and manganese ore is applied in water/sewage treatment, chemical instruments and methods, adsorbed water/sewage treatment, etc., to achieve the effects of convenient operation, simple preparation process, and avoidance of secondary pollution

Active Publication Date: 2020-04-14
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the preparation of renewable adsorbents by combining ilmenanese, lignite-based activated coke and sodium alginate

Method used

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  • Sodium alginate-based loaded nano-pyrophanite/lignite-based active coke hydrogel and preparation method thereof
  • Sodium alginate-based loaded nano-pyrophanite/lignite-based active coke hydrogel and preparation method thereof
  • Sodium alginate-based loaded nano-pyrophanite/lignite-based active coke hydrogel and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] This embodiment provides a method for preparing a sodium alginate-based loaded nano-red ilmenanite / lignite-based activated coke hydrogel, comprising the following steps:

[0036] S1. Preparation of sodium alginate solution: take an appropriate amount of sodium alginate powder, and then prepare a sodium alginate solution with a concentration of 2wt% with ultrapure water. During the preparation process, an egg beater can be used to continuously stir the solution for 10 minutes to obtain a uniform Sodium alginate solution, spare;

[0037] S2. Prepare mixed solution: add ilmenanite / brignite-based active coke powder to the sodium alginate solution obtained in step S1 to obtain a mixed solution, the mass ratio of sodium alginate solution to ilmenanese / lignite-based active coke powder is 4: 1. Then add ultra-pure water and stir evenly to obtain it; wherein, the concentration of ilmenanite / lignite-based active coke in the above mixed solution is 2wt%;

[0038] S3. Preparation ...

Embodiment 2

[0048] This embodiment provides a method for preparing a sodium alginate-based loaded nano-red ilmenanite / lignite-based activated coke hydrogel, comprising the following steps:

[0049] S1. Preparation of sodium alginate solution: take an appropriate amount of sodium alginate powder, and then prepare a sodium alginate solution with a concentration of 5wt% with ultrapure water. During the preparation process, an egg beater can be used to continuously stir the solution for 20 minutes to obtain a uniform Sodium alginate solution, spare;

[0050] S2. Prepare mixed solution: add ilmenanese / brignite-based active coke powder to the sodium alginate solution obtained in step S1 to obtain a mixed solution, the mass ratio of sodium alginate solution to ilmenanese / lignite-based active coke powder is 3: 1. Then add ultra-pure water and stir evenly to obtain it; wherein, the concentration of ilmenanite / lignite-based active coke in the above mixed solution is 1wt%;

[0051] S3. Preparation ...

Embodiment 3

[0057] This embodiment provides a method for preparing a sodium alginate-based loaded nano-red ilmenanite / lignite-based activated coke hydrogel, comprising the following steps:

[0058] S1. Preparation of sodium alginate solution: Take an appropriate amount of sodium alginate powder, and then use ultrapure water to prepare a sodium alginate solution with a concentration of 2.5wt%. Sodium alginate solution, spare;

[0059] S2. Prepare mixed solution: add ilmenanese / lignite-based active coke powder to the sodium alginate solution obtained in step S1 to obtain a mixed solution, the mass ratio of sodium alginate solution to ilmenanese / lignite-based active coke powder is 2: 1. Then add ultra-pure water and stir evenly to obtain it; wherein, the concentration of ilmenanite / lignite-based active coke in the above mixed solution is 1.25wt%;

[0060] S3. Preparation of hydrogel

[0061] S31. Preparation of calcium chloride solution: take an appropriate amount of calcium chloride, prep...

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Abstract

The invention belongs to the field of adsorption-photodegradation water treatment, and discloses a sodium alginate-based loaded nano-pyrophanite / lignite-based active coke hydrogel and a preparation method thereof. According to the preparation method, the hydrogel is prepared from loaded nano manganese titanate / lignite-based active coke powder under the crosslinking action of sodium alginate, so that hydrophilic and hydrophobic refractory organic pollutants can be removed at the same time by using the surface characteristics of the hydrogel; the preparation process is simple and feasible; the granularity of the prepared hydrogel can be controlled, so that the hydrogel can be conveniently recovered from a liquid phase, the effluent quality is improved, and the use cost is low; the in-situ regeneration can be quickly realized, and the repeated use stability is good; and no toxicity is caused, and no secondary pollution is caused to the environment.

Description

technical field [0001] The invention belongs to the technical field of adsorption and purification, and more specifically relates to a sodium alginate-based loaded nano-red ilmenanite / lignite-based activated coke hydrogel and a preparation method thereof. Background technique [0002] With the development of social urbanization and industrialization, a large number of untreated sewage and wastewater in cities are discharged into rivers, reservoirs and other urban landscape water bodies, making them prone to eutrophication, odor, blackening, etc. The ability to repair has also been damaged to varying degrees. In particular, a large amount of industrial wastewater is produced in many production processes in industries such as mining, machinery manufacturing, chemical industry, electronics, and instrumentation, which contain many harmful substances. The above-mentioned harmful substances are difficult to biodegrade, resulting in their long-term existence in the natural environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F101/30
CPCB01J20/24B01J20/0203B01J20/20B01J20/28047B01J20/28021C02F1/286C02F1/283C02F1/281C02F2101/30B01J2220/46
Inventor 邹雪焦庆睿朱亚伟高原余琛融李张卿毛潭
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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