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A method of using marine shellfish to absorb heavy metals

A technology for adsorbing heavy metals and heavy metals, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problem of low heavy metal adsorption efficiency, and achieve strong and stable adsorption force, not easy to aggregate, strong adsorption effect Effect

Active Publication Date: 2019-06-18
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the low efficiency of heavy metal adsorption by marine shellfish, the present invention provides a method for heavy metal adsorption by marine shellfish

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment is a method of using marine shellfish to adsorb heavy metals. The marine shellfish adsorbent is packed into a packed column, and a magnetic field with a magnetic induction intensity of 0.1 Tesla is applied around the packed column. The sewage is pumped into the packed column and discharged under the magnetic field Adsorption and removal of heavy metals in sewage are realized with the aid of heavy metals, including one of lead, copper, zinc, cadmium, barium, aluminum, titanium, chromium, manganese, iron, cobalt, nickel and silver metal ions, or their mixture.

[0030] In a method for using marine shellfish to adsorb heavy metals, the marine shellfish adsorbent is the most important and key component, and the marine shellfish adsorbent is composed of surface modified shell powder 50Kg, sodium alginate 10Kg, gelatin 5Kg, polyurethane The emulsion (with a solid content of 25%) consists of 5Kg, 3Kg of ethanol and 600Kg of water. Wherein, the preparation step...

Embodiment 2

[0035] In this embodiment, a method for using marine shellfish to adsorb heavy metals is to pack the marine shellfish adsorbent into a packed column, apply a magnetic field with a magnetic induction intensity of 1.5 Tesla around the filled column, pump sewage into the packed column and Adsorption and removal of heavy metals in sewage are realized with the aid of heavy metals, including one of lead, copper, zinc, cadmium, barium, aluminum, titanium, chromium, manganese, iron, cobalt, nickel and silver metal ions, or their mixture.

[0036] In a method of using marine shellfish to adsorb heavy metals, the most important and key component of the marine shellfish adsorbent is composed of 70Kg of surface-modified shell powder, 15Kg of sodium alginate, 10Kg of gelatin, polyphenylene It consists of 8Kg of ethylene emulsion (solid content is 35%), 5Kg of petroleum ether and 800Kg of water. Wherein, the preparation steps of marine shellfish adsorbent are as follows:

[0037] 1) Purif...

Embodiment 3

[0041] This embodiment is a method of using marine shellfish to adsorb heavy metals. The marine shellfish adsorbent is packed into a packed column, and a magnetic field with a magnetic induction intensity of 1.0 Tesla is applied around the packed column. The sewage is pumped into the packed column and discharged under the magnetic field. Adsorption and removal of heavy metals in sewage are realized with the aid of heavy metals, including one of lead, copper, zinc, cadmium, barium, aluminum, titanium, chromium, manganese, iron, cobalt, nickel and silver metal ions, or their mixture.

[0042] In a method of using marine shellfish to adsorb heavy metals, the most important and key component of the marine shellfish adsorbent is composed of surface modified shell powder 60Kg, sodium alginate 12Kg, gelatin 8Kg, polyacrylic acid It consists of 6Kg of ester emulsion (solid content is 30%), 4Kg of isopropanol and 700Kg of water. Wherein, the preparation steps of marine shellfish adsor...

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Abstract

The invention discloses a method for adsorbing heavy metals by utilizing marine shellfish. The method comprises the following steps: filling a marine shellfish adsorbent into a packed column, applying a magnetic field with a Tesla magnetic induction intensity of 0.1 to 1.5 at the periphery of the packed column, and pumping sewage into the packed column so as to realize adsorption and removal of the heavy metals in the sewage under the assistance of the magnetic field. The method provided by the invention has the following advantages: main components are derived from the marine shellfish, so sources are rich, and the cost is low; and purified marine shellfish powder with a modified surface structure has good dispersity, is not liable to accumulation, shows strong adsorption effect on lead, copper, zinc, cadmium, barium, aluminum, titanium, chromium, manganese, iron, cobalt, nickel and silver metal ions, and shows different absorption efficiencies on different metal ions, wherin the adsorption efficiency reaches 200 mg / g in general, while the adsorption efficiency to lead, copper, manganese and cobalt even reaches 400 mg / g or above.

Description

technical field [0001] The invention belongs to the field of water treatment and technology, and in particular relates to a method for absorbing heavy metals by using marine shellfish. Background technique [0002] With the rapid development of industry, a large amount of heavy metal wastewater is produced and discharged, the content of heavy metals in soil and water sources increases, and the pollution is becoming more and more serious, which directly affects the healthy life of human beings. Among the common treatment methods for heavy metals in sewage, adsorption method is currently the most commonly used and most environmentally friendly treatment method. The traditional adsorbent is activated carbon. Activated carbon has strong adsorption capacity, but at the same time, it also has the problem of low regeneration efficiency, which makes the treatment cost high. [0003] In recent years, people have gradually turned their attention to cheaper and more readily available ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28C02F1/48B01J20/24B01J20/30C02F101/20C02F101/22
CPCB01J20/24B01J2220/4881C02F1/286C02F1/48C02F2101/20C02F2101/203C02F2101/206C02F2101/22
Inventor 刘俊稚许家辉葛亚明
Owner ZHEJIANG OCEAN UNIV
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