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Nano-material for treating heavy metal ions in sewage, and preparation method thereof

A technology of heavy metal ions and nanomaterials, which is applied to the field of nanomaterials for heavy metal ion treatment in sewage and its preparation field, can solve the problems of limited synergy, insufficient adsorption, and high treatment costs, and achieve the effect of efficient removal

Inactive Publication Date: 2020-08-21
朱晴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently commercially available adsorbents have poor stability and insufficient adsorption capacity. When applied to the treatment of heavy metal waste liquid, the amount used is large and the treatment cost is high.
[0005] Patent CN105692771B discloses a heavy metal sewage treatment material, using hydrochloric acid to modify sepiolite, pyridine quaternary ammonium salt type cationic polyacrylamide, zeolite powder, modified attapulgite, cellulose xanthate, chitosan, cross-linked Carboxymethyl starch, hydroxypropyl cellulose graft copolymer, ferric sulfate, lime powder, activated carbon powder, etc. time consuming

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A preparation method for nanomaterials used for heavy metal ion treatment in sewage, the specific steps are as follows:

[0035] (1) First use 1kg of titanium isopropoxide, 5kg of boric acid, 80kg of absolute ethanol, 6kg of sodium dihydrogen phosphate, 10kg of palygorskite powder and 20kg of water as raw materials, react in a sealed chamber at 180°C for 8 hours, and cool naturally to 80°C;

[0036] (2) Then add 3kg of γ-mercaptopropyltrimethoxysilane and 6kg of γ-aminoethylaminopropyltrimethoxysilane, conduct thermal insulation modification treatment, and naturally cool to room temperature (25°C) to obtain a reaction solution;

[0037] (3) Next, add 12kg of ultra-fine corn stalk powder to the reaction solution, oscillate evenly to obtain the mixed material, add Candida utilis seed solution, and sprinkle 0.1kg of reduced glutathione evenly at the same time, and ferment at 32°C 30 minutes, vacuum freeze-drying, ball milling, and obtain.

[0038] In step (1), the mixing ...

Embodiment 2

[0051] A preparation method for nanomaterials used for heavy metal ion treatment in sewage, the specific steps are as follows:

[0052] (1) First use 1kg of titanium isopropoxide, 8kg of boric acid, 50kg of absolute ethanol, 8kg of sodium dihydrogen phosphate, 8kg of palygorskite powder and 25kg of water as raw materials, react in a sealed chamber at 170°C for 10 hours, and cool naturally to 70°C;

[0053] (2) Then add 5kg of γ-mercaptopropyltrimethoxysilane and 4kg of γ-aminoethylaminopropyltrimethoxysilane, conduct thermal insulation modification treatment, and naturally cool to room temperature (25°C) to obtain a reaction solution;

[0054] (3) Next, add 15kg of ultra-fine corn stalk powder to the reaction liquid, oscillate evenly to obtain the mixed material, add Candida utilis seed liquid, and sprinkle 0.05kg of reduced glutathione evenly at the same time, and ferment at 35°C 20 minutes, vacuum freeze-drying, ball milling, and obtain.

[0055] In step (1), the mixing met...

Embodiment 3

[0068] A preparation method for nanomaterials used for heavy metal ion treatment in sewage, the specific steps are as follows:

[0069] (1) First use 1kg of titanium isopropoxide, 6kg of boric acid, 70kg of absolute ethanol, 7kg of sodium dihydrogen phosphate, 9kg of palygorskite powder and 22kg of water as raw materials, react in a sealed chamber at 175°C for 9 hours, and cool naturally to 75°C;

[0070] (2) Then add 4kg of γ-mercaptopropyltrimethoxysilane and 5kg of γ-aminoethylaminopropyltrimethoxysilane, conduct thermal insulation modification treatment, and naturally cool to room temperature (25°C) to obtain a reaction solution;

[0071] (3) Next, add 13kg of ultra-fine corn stalk powder to the reaction solution, oscillate evenly to obtain the mixed material, add Candida utilis seed solution, and sprinkle 0.08kg of reduced glutathione evenly at the same time, and ferment at 33°C 25 minutes, vacuum freeze-drying, ball milling, and obtain.

[0072] In step (1), the mixing ...

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Abstract

The invention provides a nano-material for treating heavy metal ions in sewage, and a preparation method thereof. The preparation method comprises the following steps: taking titanium isopropoxide, boric acid, absolute ethyl alcohol, sodium dihydrogen phosphate, palygorskite powder and water as raw materials, carrying out a high temperature reaction, then adding gamma-mercaptopropyltrimethoxysilane and gamma-aminoethyl aminopropyltrimethoxysilane, carrying out thermal-insulation modification treatment on corn straw, adding corn straw ultrafine powder, inoculating with a candida utilis seed solution, uniformly scattering reduced glutathione, fermenting, and carrying out post-treatment to obtain the nano-material. The nano-material can adsorb multiple heavy metal ions in a short time and efficiently remove the heavy metal ions in sewage.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a nanometer material used for treating heavy metal ions in sewage and a preparation method thereof. Background technique [0002] With the rapid development of industrial production activities such as mining, electroplating, metallurgy, pharmaceuticals, chemicals, printing and dyeing, and papermaking, a large amount of industrial sewage is discharged into water bodies, and the water environment on which people live is seriously polluted. Heavy metal ions in heavy metal wastewater circulate through groundwater and migrate through soil, causing pollution to drinking water and food, and seriously endangering human living environment and life safety. Heavy metals are generally difficult to disappear in nature and cannot be decomposed and destroyed. They can only change their physical and chemical forms and transfer their location. When heavy metals are adsorbed by organisms...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/20
CPCB01J20/02B01J20/048B01J20/103B01J20/22B01J20/24C02F1/288C02F2101/20
Inventor 朱晴
Owner 朱晴
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