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Gel microsphere adsorbing heavy metal ions in wastewater and preparation method of gel microsphere

A technology of heavy metal ions and gel microspheres, which is applied in the fields of adsorbing water/sewage treatment, alkali metal compounds, chemical instruments and methods, etc., can solve the problems of unsatisfactory heavy metal ion adsorption effect, poor dispersibility, and application limitations, etc. To achieve the effect of easy industrial production, abundant and easy to obtain, and simple preparation method

Inactive Publication Date: 2019-02-12
INST OF BAST FIBER CROPS CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as an adsorbent, a single jute leaf is viscous in an aqueous solution, and its dispersion is not good. The adsorption effect on heavy metal ions in wastewater is not ideal, and it is difficult to recover after adsorption, which is likely to cause secondary pollution, resulting in its application being restricted. limit

Method used

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  • Gel microsphere adsorbing heavy metal ions in wastewater and preparation method of gel microsphere
  • Gel microsphere adsorbing heavy metal ions in wastewater and preparation method of gel microsphere
  • Gel microsphere adsorbing heavy metal ions in wastewater and preparation method of gel microsphere

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Embodiment 1

[0031] The preparation of embodiment 1 gel microsphere 1 of the present invention

[0032] Stir and dissolve 2g of sodium alginate in 100mL of deionized water under heating in a water bath, then add 0.5g of jute leaf powder (with a particle size between 30 and 250 μm) that has passed through a 60-mesh sieve, mix and stir the above two, and use The peristaltic pump was added dropwise into 5% calcium chloride solution at a speed of 1.0mL / min to form gel microspheres, which were left to stand for 24 hours, washed 4-5 times with deionized water, and poured on gauze , and naturally dried for 12 hours to obtain the gel microspheres of the present invention, the water content is 55%, and the particle diameter is 0.5~2mm, such as figure 1 shown.

Embodiment 2

[0033] Embodiment 2 The preparation of the gel microsphere 2 of the present invention

[0034] Dissolve 1 g of sodium alginate in 100 mL of deionized water with stirring and heating in a water bath, then add 1 g of jute leaf powder (with a particle size between 30 and 250 μm) that has passed through a 60-mesh sieve, mix and stir the above two, and then use a peristaltic The pump was added dropwise into 5% calcium chloride solution at a speed of 1.5mL / min to form gel microspheres, which were allowed to stand for 24 hours, washed 4-5 times with deionized water, and poured on gauze. Dry naturally for 12 hours to obtain gel microspheres of the present invention with a water content of 50% and a particle diameter of 0.5 to 2 mm, such as figure 1 shown.

Embodiment 3

[0035] Embodiment 3 Preparation of gel microsphere 3 of the present invention

[0036] Stir and dissolve 0.5g of sodium alginate in 100mL of deionized water under heating in a water bath, then add 2.0g of jute leaf powder (with a particle size between 30 and 250 μm) that has passed through a 60-mesh sieve, and mix and stir the above two, Use a peristaltic pump to add dropwise into 6% calcium chloride solution at a speed of 2 mL / min to form gel microspheres. After standing for 24 hours, wash them with deionized water for 4 to 5 times, and pour them on gauze , and naturally dried for 12 hours to obtain the gel microspheres of the present invention, the water content is about 60%, and the particle diameter is 0.5-2 mm, such as figure 1 shown.

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Abstract

The invention relates to the technical field of industrial wastewater treatment, in particular to a gel microsphere adsorbing heavy metal ions in wastewater and a preparation method of the gel microsphere. According to the gel microsphere, a natural plant, namely roundpod jute leaf is adopted as a raw material, the raw material is rich in source and easy to obtain, the price is low, biodegradationcan be achieved, environmental friendliness is achieved, the preparation method is simple, and the gel microsphere is easy to produce industrially; the prepared gel microsphere has a remarkable adsorption effect on the heavy metal ions, namely chrome in the wastewater; and additionally, according to the roundpod jute leaf gel microsphere, the gel microsphere after adsorbing is easy to separate from a water body and can be recycled, thus resources are saved, and secondary pollution is avoided.

Description

technical field [0001] The invention relates to the technical field of industrial wastewater treatment, in particular to a gel microsphere for adsorbing heavy metal ions in wastewater and a preparation method thereof. Background technique [0002] Heavy metal pollution mainly comes from industrial pollution, such as electroplating, mining, steel and non-ferrous metal smelting, etc., and industrial pollution is mostly discharged into the environment through waste residue, wastewater, and waste gas. Heavy metals cannot be biodegraded into harmless substances, and can be enriched in humans, animals, and plants, thus causing great harm to the environment and human health. Chromium is a highly toxic heavy metal that easily enters human cells, causing damage to liver, kidney and other internal organs and DNA. Accumulation in the human body is carcinogenic and may induce gene mutations. Chromium generally exists in the form of trivalent chromium and hexavalent chromium in the natu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28C02F1/28B01J20/30C02F101/22
CPCB01J20/046B01J20/24B01J20/28047C02F1/281C02F1/286C02F2101/22
Inventor 邓灿辉粟建光陈基权杨泽茂戴志刚唐蜻许英程超华刘禅
Owner INST OF BAST FIBER CROPS CHINESE ACADEMY OF AGRI SCI