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

A kind of biochar catalyst, iron-carbon catalyst and application thereof

An iron-carbon catalyst and biochar technology are applied in the fields of environmental engineering and pollution treatment engineering, which can solve the problems of inability to effectively degrade pollutants, easy passivation of iron-carbon materials, low catalytic efficiency, etc., and achieve enhanced adsorption and catalytic performance, saving energy Effects of usage, significant environmental and economic advantages

Active Publication Date: 2019-02-05
YANGTZE DELTA REGION INST OF TSINGHUA UNIV ZHEJIANG
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Studies have shown that biochar is an effective adsorbent, which can adsorb high concentrations of heavy metals in water and soil, and has a slow desorption rate, and can also adsorb some organic pollutants.
However, biochar only adsorbs some organic pollutants, and cannot effectively degrade pollutants, and there is a great deficiency in the adsorption of heavy metals bound by complexes, so necessary modification treatment should be carried out on biochar
[0011] Iron-carbon materials can effectively combine adsorption and catalytic performance, and are widely used in wastewater treatment, but ordinary iron-carbon materials are easy to passivate, and the catalytic efficiency is not high.

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
  • A kind of biochar catalyst, iron-carbon catalyst and application thereof
  • A kind of biochar catalyst, iron-carbon catalyst and application thereof
  • A kind of biochar catalyst, iron-carbon catalyst and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] 1. Preparation of biochar catalyst

[0055] The preparation method of biochar catalyst, concrete steps are as follows:

[0056] (1) Take the straw, wash it, air-dry it, crush it, pass it through a 2mm sieve, and conduct carbonization under anaerobic conditions at 300-700°C for 2-4 hours; Treat with 1mol / L hydrochloric acid for 2-4 hours to remove ash, wash with distilled water until the washing solution is neutral, and then dry at 80°C to obtain biochar.

[0057] (2) Take a certain amount of biochar and add it to a certain amount of cerium chloride, FeCl 3 and FeSO 4 The mixed solution, in which FeCl 3 and FeSO 4 The ratio of the amount of the substance is 2:1. Under the protection of nitrogen, add 6mol / L NaOH solution dropwise to the above mixed solution to pH 10 while stirring, and continue to stir for 12-24h; after stirring, remove the supernatant, After washing the remaining solid with deionized water for 3 times, it was dried at 80°C under the protection of ni...

Embodiment 2

[0072] 1. Preparation of biochar catalyst

[0073] The preparation method of biochar catalyst, concrete steps are as follows:

[0074] (1) Take the straw, wash it, air-dry it, crush it, pass it through a 2mm sieve, and conduct carbonization under anaerobic conditions at 300-700°C for 2-4 hours; Treat with 1mol / L hydrochloric acid for 2-4 hours to remove ash, wash with distilled water until the washing solution is neutral, and then dry at 80°C to obtain biochar.

[0075] (2) Take a certain amount of biochar and add it to a certain amount of cerium chloride, FeCl 3 and FeSO 4 The mixed solution, in which FeCl 3 and FeSO 4 The ratio of the amount of the substance is 2:1. Under the protection of nitrogen, add 6mol / L NaOH solution dropwise to the above mixed solution to pH 10 while stirring, and continue to stir for 12-24h; after stirring, remove the supernatant, After the remaining solid was washed with deionized water for 3 times, it was dried at 80°C under the protection of...

Embodiment 3

[0119] 1. Preparation of biochar catalyst

[0120] The preparation method of biochar catalyst, concrete steps are as follows:

[0121] (1) Take the straw, wash it, air-dry it, crush it, pass it through a 2mm sieve, and conduct carbonization under anaerobic conditions at 300-700°C for 2-4 hours; Treat with 1mol / L hydrochloric acid for 2-4 hours to remove ash, wash with distilled water until the washing solution is neutral, and then dry at 80°C to obtain biochar.

[0122] (2) Take a certain amount of biochar and add it to a certain amount of cerium chloride, FeCl 3 and FeSO 4 The mixed solution, in which FeCl 3 and FeSO 4 The ratio of the amount of the substance is 2:1. Under the protection of nitrogen, add 6mol / L NaOH solution dropwise to the above mixed solution to pH 10 while stirring, and continue to stir for 12-24h; after stirring, remove the supernatant, After the remaining solid was washed with deionized water for 3 times, it was dried at 80°C under the protection of...

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a biological carbon catalyst, an iron carbon catalyst and application of the biological carbon catalyst. According to the biological carbon catalyst, biological carbon serves as a carrier and is loaded with rare earth metal oxide and Fe3O4, by mass percentage, the loading amount of the rare earth metal oxide is 0.8-5%, the loading amount of Fe3O4 is 5-15%, the particle size of the rare earth metal oxide is 10-100 nm, and the particle size of Fe3O4 is 10-100 nm. Biological carbon is loaded with the nano-scale rare earth metal oxide and Fe3O4, the catalyst which can be applied to treating sewage containing heavy metal and persistent organic pollutants is prepared and obtained, the catalyst is high in catalysis efficiency, and the sewage treatment effect can be remarkably improved.

Description

technical field [0001] The invention relates to the fields of environmental engineering and pollution treatment engineering, in particular to a biochar catalyst, an iron-carbon catalyst and applications thereof. Background technique [0002] Adsorbable organic halides (AOX), nitrobenzenes, anilines and other substances are widely used in dyestuffs, printing and dyeing, pharmaceuticals, pesticides and other industries as important chemical raw materials, intermediates, and solvents, so they are widely used in wastewater pollution . The chemical properties of these pollutants are stable, difficult to biodegrade, highly toxic and harmful, so they are required to be strictly controlled in the discharge of industrial wastewater and included in relevant discharge standards. [0003] In recent years, my country's relevant wastewater discharge standards have become increasingly stringent. For example, the new standard "Textile Dyeing and Finishing Industry Water Pollutant Discharge...

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 Patents(China)
IPC IPC(8): B01J23/83C02F9/04C02F101/20C02F101/30C02F101/36C02F101/38
CPCB01J23/83C02F1/56C02F1/70C02F1/725C02F9/00C02F2101/20C02F2101/30C02F2101/36C02F2101/38
Inventor 徐灿灿刘锐陈吕军
Owner YANGTZE DELTA REGION INST OF TSINGHUA UNIV ZHEJIANG