Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of biochar loaded with lanthanum-doped iron oxide

A technology of iron oxide and biochar, which is applied in the fields of environmental engineering and pollution treatment engineering, can solve the problems such as the preparation method of lanthanum-doped iron oxide supported by biochar and other problems, and achieves easy industrialization and production, high success rate and low cost Effect

Inactive Publication Date: 2020-02-21
SHAOXING UNIVERSITY
View PDF1 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] So far, there is no report on the preparation method of biochar-supported lanthanum-doped iron oxide

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of biochar loaded with lanthanum-doped iron oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of biochar-loaded lanthanum-doped iron oxide includes the following steps:

[0027] (1) Preparation of biochar raw material A: After removing the surface adhesions from the biomass raw material, drying at 60-80°C to constant weight, crushing with a crusher, the material passing through a 60-80 mesh sieve is A;

[0028] (2) Preparation of lanthanum-iron mixture B: Weigh 1.6g of iron chloride (FeCl3·6H2O) and 1.0g of lanthanum nitrate (La(NO3)3·6H2O) and dissolve it in 100ml of deionized water, that is, B, which contains iron and The mass ratio of lanthanum element is 1:1; the mass-volume ratio of lanthanum element and deionized water is 0.32:100 (g / mL);

[0029] (3) Preparation of biochar raw material and lanthanum-iron mixture C: Take 25.0g of A and add it to B. After stirring vigorously for 30 minutes, slowly add 1mol / L NaOH solution while stirring, adjust the pH value of the solution to 10, and continue to stir for 1 hour. Get C; Among them, the mass ra...

Embodiment 2

[0033] A preparation method of biochar-loaded lanthanum-doped iron oxide includes the following steps:

[0034] (1) Preparation of biochar raw material A: After removing the surface adhesions from the biomass raw material, drying at 60-80°C to constant weight, crushing with a crusher, the material passing through a 60-80 mesh sieve is A;

[0035] (2) Preparation of lanthanum-iron mixture B: Weigh 1.17g of ferric chloride (FeCl3·6H2O) and 1.0g of lanthanum nitrate (La(NO3)3·6H2O) and dissolve in 100ml of deionized water, that is, B, which contains iron and The mass ratio of lanthanum element is 0.8:1; the mass-volume ratio of lanthanum element and deionized water is 0.32:100 (g / mL);

[0036] (3) Preparation of biochar raw material and lanthanum-iron mixture C: add 19.3g of A to B, stir vigorously for 30 minutes, slowly add 1mol / L NaOH solution while stirring, adjust the pH of the solution to 10, and continue to stir for 1h. Get C; Among them, the mass ratio of A to lanthanum is 60:1;...

Embodiment 3

[0040] A preparation method of biochar-loaded lanthanum-doped iron oxide includes the following steps:

[0041] (1) Preparation of biochar raw material A: After removing the surface adhesions from the biomass raw material, drying at 60-80°C to constant weight, crushing with a crusher, the material passing through a 60-80 mesh sieve is A;

[0042] (2) Preparation of lanthanum-iron mixture B: Weigh 1.86g of iron chloride (FeCl3·6H2O) and 1.0g of lanthanum nitrate (La(NO3)3·6H2O) and dissolve it in 100ml of deionized water, which is B, where iron and The mass ratio of lanthanum element is 0.8:1; the mass-volume ratio of lanthanum element and deionized water is 0.32:100 (g / mL);

[0043] (3) Preparation of biochar raw material and lanthanum-iron mixture C: Take 27.3g of A and add it to B. After stirring vigorously for 30 minutes, slowly add 1mol / L NaOH solution while stirring, adjust the pH value of the solution to 10, and continue to stir for 1h. Get C; Among them, the mass ratio of A t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of biochar loaded with lanthanum-doped iron oxide. The preparation method comprises the following steps: preparing a biochar raw material A; dissolving ferric chloride and lanthanum nitrate in deionized water according to mass ratio of the iron element to the lanthanum element of (0.8-1.2): 1 so as to obtain a lanthanum-iron mixture B; adding A into B,wherein a mass ratio of A to lanthanum is (60-85): 1, slowly adding a NaOH solution drop by drop while stirring to adjust the pH value of a formed solution to 10 so as to obtain a mixture C of the biochar raw material and the lanthanum-iron mixture; transferring C into a reaction kettle with a polytetrafluoroethylene lining, carrying out heating to 160-200 DEG C, keeping the temperature for 8 hours, filtering a mixed solution in the reaction kettle, cleaning filter residues, and carrying out vacuum drying to obtain the biochar D loaded with lanthanum-doped iron oxide. The preparation method for the biochar loaded with lanthanum-doped iron oxide is simple and convenient to operate, high in success rate, low in cost and easy for industrial production, and uses easily available raw materials; the arsenic ion adsorption effect of the lanthanum-doped iron oxide loaded biochar is obviously superior to the arsenic ion adsorption effect of lanthanum-loaded biochar, and the lanthanum-doped iron oxide loaded biochar has magnetism and is convenient to recover.

Description

Technical field [0001] The invention belongs to the field of environmental engineering and pollution treatment engineering, and can be applied to adsorb heavy metal ions such as As, P and other anions and organic compounds in the environment. Specifically, it relates to a preparation method of biochar-loaded lanthanum-doped iron oxide. Background technique [0002] In recent years, heavy metal pollution in water bodies has become increasingly serious, and arsenic is one of the most important water heavy metal pollutants. Direct discharge of arsenic-containing sewage will destroy the ecological environment of the water body and harm human health. Long-term exposure to arsenic can cause cancers such as skin cancer and lung cancer. The World Health Organization stipulates that the maximum concentration of arsenic in drinking water is 0.01 mg / L. Therefore, reducing the concentration of arsenic in water has always been the focus of research and attention. Existing arsenic removal t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20C02F1/28B01J20/30B01J20/28C02F101/10
CPCB01J20/06B01J20/20B01J20/28009C02F1/281C02F1/283C02F2101/103
Inventor 陈国和石文陈士卫施朝杰吴斌
Owner SHAOXING UNIVERSITY