CN105838378A - Iron-based biochar material, and biochar preparation process and application thereof in soil pollution control - Google Patents
Iron-based biochar material, and biochar preparation process and application thereof in soil pollution control Download PDFInfo
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- CN105838378A CN105838378A CN201610159204.9A CN201610159204A CN105838378A CN 105838378 A CN105838378 A CN 105838378A CN 201610159204 A CN201610159204 A CN 201610159204A CN 105838378 A CN105838378 A CN 105838378A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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- Soil Conditioners And Soil-Stabilizing Materials (AREA)
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Abstract
The invention relates to an iron-based biochar material, and a biochar preparation process and an application thereof in soil pollution control, and belongs to the field of soil pollution treatment. The preparation process comprises the steps: firstly, carbonizing a mixture of rice straw and other substances, then mixing the carbonized mixture with polyacrylamide, carrying out fermentation treatment, then mixing with oxalic acid, drying, next carrying out heating treatment with ferrous sulfide, cooling to room temperature, stirring with polyvinyl alcohol, drying, and discharging. The iron-based biochar material has the beneficial effects that the prepared biochar has high efficiency on treating chromium-containing soil, has thorough treatment, and cannot cause secondary pollution on the soil.
Description
Technical field
The present invention relates to a kind of iron-based biological carbon materials, its preparation technology charcoal and its control in soil pollution
Application in reason, belongs to soil pollution process field.
Background technology
Biological carbon materials application in terms of heavy metal pollution reparation in recent years is progressively paid attention to.Charcoal
Raw material sources are extensive, have substantial amounts of microcellular structure and huge specific surface area, and absorbability is relatively strong, its absorption
Behavior can affect heavy metal migration, conversion, biological and ecological effect and contaminated environment in the environment and be situated between
The processes such as the control of matter and reparation.The multiple functional groups such as substantial amounts of carboxyl, hydroxyl and anhydride are contained on charcoal surface
Group and negative charge, specific surface area is bigger.After applying soil, charcoal energy Adsorption of Heavy Metals is also fixed
On surface, significantly reduce the biological effectiveness of most of heavy metal, soil physics, chemistry and life can be improved simultaneously
Thing characteristic, makes soil fertility and crop yield all be improved to some extent.
But it is low that the process for the charcoal containing chromium at present still exists efficiency, process not thorough, also simultaneously
Other pollutions in soil can be caused.
Summary of the invention
The technical problem that present invention mainly solves: process containing chromium soil efficiency not for currently used charcoal
Height, processes halfway problem, it is provided that one utilizes rice straw carbonization and Iron sulfuret. to be mixed with iron-based
Biological carbon materials, charcoal prepared by the present invention processes containing chromium soil efficiency high, processes thoroughly, will not be to soil
Cause secondary pollution.
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention:
(1) take the rice straw of 1～2kg, the Radix Puerariae of 200～500g, 100～200g Semen Ricini bars, be placed on
Pulverizer carries out being ground into the powder of 100～150 mesh, is placed in retort and carries out carbonization, control carbonization temperature
Degree is 300～400 DEG C, carbonization 1～2h, is incubated 40～50min, takes out so that it is naturally cool to room temperature；
(2) by the mixture after the carbonization of above-mentioned process and polyacrylamide after 1000:1 mixes in mass ratio,
It is placed in fermentation tank and carries out fermentation process, and add mixture quality 20～the biogas slurry of 30% to it, and to it
Stirring so that it is after stirring, carries out sealing and fermenting to it, and controlling fermentation temperature is 30～40 DEG C, fermentation 1～
2 days；
(3) after fermentation ends, take out, it is filtered, be the oxalic acid solution of 30% by filtrate and mass fraction
After 5:1 mixes in mass ratio, and being stirred it after uniformly, being placed on temperature is 35～40 DEG C
Baking oven carries out drying 1～2h, takes out, obtain hybrid filtering thing；
(4) carry out mixing being placed on reactor with Iron sulfuret. 10:1 in mass ratio by the hybrid filtering thing of above-mentioned preparation
In heat, be simultaneously passed through nitrogen to it and get rid of the air of reactor, and the temperature controlling reactor is
150～200 DEG C, the response time is 30～40min, while reaction, adds mass fraction 30% to it
Hydrochloric acid, the amount of interpolation is 1:20 with the mass ratio of hybrid filtering thing；
(5) after its heating terminates, take out mixture, and make it naturally cool to room temperature, move it to a container
In, and add mixture quality 10～the polyvinyl alcohol of 15% to it, and to its stirring until uniformly, treat all
After even, it is carried out cold drying, then is placed in discharging machine and is stirred discharging,.
Carry out mixing until uniformly with deionized water 1:100 in mass ratio by the charcoal of above-mentioned preparation, profit
Carrying out being sprayed in the soil containing heavy metal chromium with spray gun, averagely every square is spilled into 400～500mL, waits to be spilled into
After end, stand the 1～2h process that can complete heavy metal.
The invention has the beneficial effects as follows:
(1) charcoal processes containing chromium soil efficiency high, processes thoroughly；
(2) soil is not resulted in secondary pollution；
(3) preparation process is simple, required low cost.
Detailed description of the invention
First take the rice straw of 1～2kg, the Radix Puerariae of 200～500g, 100～200g Semen Ricini bars, incite somebody to action
It is placed in pulverizer the powder carrying out being ground into 100～150 mesh, is placed in retort and carries out carbonization, controls
Carbonization temperature is 300～400 DEG C, carbonization 1～2h, is incubated 40～50min, takes out so that it is naturally cool to
Room temperature；Again the mixture after the carbonization of above-mentioned process is mixed with polyacrylamide 1000:1 in mass ratio
After, it is placed in fermentation tank and carries out fermentation process, and add mixture quality 20～the biogas slurry of 30% to it, and
Stirring it so that it is after stirring, it is carried out sealing and fermenting, controlling fermentation temperature is 30～40 DEG C,
Ferment 1～2 day；After fermentation ends, take out, it is filtered, be 30% by filtrate and mass fraction
Oxalic acid solution is after 5:1 mixes in mass ratio, and after being stirred it uniformly, being placed on temperature is
The baking oven of 35～40 DEG C carries out drying 1～2h, takes out, obtain hybrid filtering thing；Then mixing above-mentioned preparation
Close filtrate carry out mixing to be placed in reactor heating with Iron sulfuret. 10:1 in mass ratio, while to
It is passed through nitrogen and gets rid of the air of reactor, and the temperature controlling reactor is 150～200 DEG C, the response time
Be 30～40min, reaction while, to its add mass fraction 30% hydrochloric acid, the amount of interpolation with mix
The mass ratio of filtrate is 1:20；After its heating terminates, take out mixture, and make it naturally cool to room temperature,
Move it in a container, and add mixture quality 10～the polyvinyl alcohol of 15% to it, and it is stirred
Until uniformly, after uniformly, it is carried out cold drying, then is placed in discharging machine and is stirred discharging,.
Carry out mixing with deionized water 1:100 in mass ratio by the charcoal of above-mentioned preparation until uniformly, utilizing spray gun to enter
Row is sprayed in the soil containing heavy metal chromium, and averagely every square is spilled into 400～500mL, after being spilled into end,
Stand the 1～2h process that can complete heavy metal.
Example 1
First the rice straw of 2kg is taken, the Radix Puerariae of 500g, 200g Semen Ricini bar, it is placed in pulverizer and carries out powder
Being broken into the powder of 150 mesh, be placed in retort and carry out carbonization, controlling carbonization temperature is 400 DEG C, carbonization 2h,
Insulation 50min, takes out so that it is naturally cool to room temperature；Again by the mixture after the carbonization of above-mentioned process with poly-
Acrylamide after 1000:1 mixes in mass ratio, is placed in fermentation tank and carries out fermentation process, and add to it
Enter the biogas slurry of mixture quality 30%, and it stirred so that it is after stirring, it is carried out sealing and fermenting,
Controlling fermentation temperature is 40 DEG C, ferments 2 days；After fermentation ends, take out, it is filtered, by filtrate
With the oxalic acid solution that mass fraction is 30% after 5:1 mixes in mass ratio, and it is stirred uniformly
After, it is placed in the baking oven that temperature is 40 DEG C and carries out drying 2h, take out, obtain hybrid filtering thing；Then will
The hybrid filtering thing of above-mentioned preparation carries out mixing being placed in reactor with Iron sulfuret. 10:1 in mass ratio and carries out
Heating, is passed through nitrogen to it simultaneously and gets rid of the air of reactor, and the temperature controlling reactor is 200 DEG C, instead
Being 40min between Ying Shi, while reaction, add the hydrochloric acid of mass fraction 30% to it, the amount of interpolation is with mixed
The mass ratio closing filtrate is 1:20；After its heating terminates, take out mixture, and make it naturally cool to room
Temperature, moves it in a container, and adds the polyvinyl alcohol of mixture quality 15% to it, and stirs it
Until uniformly, after uniformly, it is carried out cold drying, then is placed in discharging machine and is stirred discharging,.
Carry out mixing with deionized water 1:100 in mass ratio by the charcoal of above-mentioned preparation until uniformly, utilizing spray gun to enter
Row is sprayed in the soil containing heavy metal chromium, and averagely every square is spilled into 500mL, after being spilled into end, stands
2h can complete the process of heavy metal.Charcoal processes containing chromium soil efficiency high, processes thoroughly；To soil
Do not result in secondary pollution.
Example 2
First the rice straw of 1kg is taken, the Radix Puerariae of 200g, 100g Semen Ricini bar, it is placed in pulverizer and carries out powder
Being broken into the powder of 100 mesh, be placed in retort and carry out carbonization, controlling carbonization temperature is 300 DEG C, carbonization 1h,
Insulation 40min, takes out so that it is naturally cool to room temperature；Again by the mixture after the carbonization of above-mentioned process with poly-
Acrylamide after 1000:1 mixes in mass ratio, is placed in fermentation tank and carries out fermentation process, and add to it
Enter the biogas slurry of mixture quality 20%, and it stirred so that it is after stirring, it is carried out sealing and fermenting,
Controlling fermentation temperature is 30 DEG C, ferments 1 day；After fermentation ends, take out, it is filtered, by filtrate
With the oxalic acid solution that mass fraction is 30% after 5:1 mixes in mass ratio, and it is stirred uniformly
After, it is placed in the baking oven that temperature is 35 DEG C and carries out drying 1h, take out, obtain hybrid filtering thing；Then will
The hybrid filtering thing of above-mentioned preparation carries out mixing being placed in reactor with Iron sulfuret. 10:1 in mass ratio and carries out
Heating, is passed through nitrogen to it simultaneously and gets rid of the air of reactor, and the temperature controlling reactor is 150 DEG C, instead
Being 30min between Ying Shi, while reaction, add the hydrochloric acid of mass fraction 30% to it, the amount of interpolation is with mixed
The mass ratio closing filtrate is 1:20；After its heating terminates, take out mixture, and make it naturally cool to room
Temperature, moves it in a container, and adds the polyvinyl alcohol of mixture quality 10% to it, and stirs it
Until uniformly, after uniformly, it is carried out cold drying, then is placed in discharging machine and is stirred discharging,.
Carry out mixing with deionized water 1:100 in mass ratio by the charcoal of above-mentioned preparation until uniformly, utilizing spray gun to enter
Row is sprayed in the soil containing heavy metal chromium, and averagely every square is spilled into 400mL, after being spilled into end, stands
2h can complete the process of heavy metal.Charcoal processes containing chromium soil efficiency high, processes thoroughly；To soil
Do not result in secondary pollution.
Example 3
First the rice straw of 2kg is taken, the Radix Puerariae of 300g, 150g Semen Ricini bar, it is placed in pulverizer and carries out powder
Being broken into the powder of 120 mesh, be placed in retort and carry out carbonization, controlling carbonization temperature is 350 DEG C, carbonization 2h,
Insulation 40min, takes out so that it is naturally cool to room temperature；Again by the mixture after the carbonization of above-mentioned process with poly-
Acrylamide after 1000:1 mixes in mass ratio, is placed in fermentation tank and carries out fermentation process, and add to it
Enter the biogas slurry of mixture quality 25%, and it stirred so that it is after stirring, it is carried out sealing and fermenting,
Controlling fermentation temperature is 35 DEG C, ferments 1 day；After fermentation ends, take out, it is filtered, by filtrate
With the oxalic acid solution that mass fraction is 30% after 5:1 mixes in mass ratio, and it is stirred uniformly
After, it is placed in the baking oven that temperature is 37 DEG C and carries out drying 2h, take out, obtain hybrid filtering thing；Then will
The hybrid filtering thing of above-mentioned preparation carries out mixing being placed in reactor with Iron sulfuret. 10:1 in mass ratio and carries out
Heating, is passed through nitrogen to it simultaneously and gets rid of the air of reactor, and the temperature controlling reactor is 170 DEG C, instead
Being 36min between Ying Shi, while reaction, add the hydrochloric acid of mass fraction 30% to it, the amount of interpolation is with mixed
The mass ratio closing filtrate is 1:20；After its heating terminates, take out mixture, and make it naturally cool to room
Temperature, moves it in a container, and adds the polyvinyl alcohol of mixture quality 13% to it, and stirs it
Until uniformly, after uniformly, it is carried out cold drying, then is placed in discharging machine and is stirred discharging,.
Carry out mixing with deionized water 1:100 in mass ratio by the charcoal of above-mentioned preparation until uniformly, utilizing spray gun to enter
Row is sprayed in the soil containing heavy metal chromium, and averagely every square is spilled into 450mL, after being spilled into end, stands
2h can complete the process of heavy metal.Charcoal processes containing chromium soil efficiency high, processes thoroughly；To soil
Do not result in secondary pollution.
Claims (2)
1. iron-based biological carbon materials, its preparation technology charcoal and its application in remediation contaminated soil,
It is characterized in that concrete preparation process is:
(1) take the rice straw of 1～2kg, the Radix Puerariae of 200～500g, 100～200g Semen Ricini bars, be placed on
Pulverizer carries out being ground into the powder of 100～150 mesh, is placed in retort and carries out carbonization, control carbonization temperature
Degree is 300～400 DEG C, carbonization 1～2h, is incubated 40～50min, takes out so that it is naturally cool to room temperature；
(2) by the mixture after the carbonization of above-mentioned process and polyacrylamide after 1000:1 mixes in mass ratio,
It is placed in fermentation tank and carries out fermentation process, and add mixture quality 20～the biogas slurry of 30% to it, and to it
Stirring so that it is after stirring, carries out sealing and fermenting to it, and controlling fermentation temperature is 30～40 DEG C, fermentation 1～
2 days；
(3) after fermentation ends, take out, it is filtered, be the oxalic acid solution of 30% by filtrate and mass fraction
After 5:1 mixes in mass ratio, and being stirred it after uniformly, being placed on temperature is 35～40 DEG C
Baking oven carries out drying 1～2h, takes out, obtain hybrid filtering thing；
(4) carry out mixing being placed on reactor with Iron sulfuret. 10:1 in mass ratio by the hybrid filtering thing of above-mentioned preparation
In heat, be simultaneously passed through nitrogen to it and get rid of the air of reactor, and the temperature controlling reactor is
150～200 DEG C, the response time is 30～40min, while reaction, adds mass fraction 30% to it
Hydrochloric acid, the amount of interpolation is 1:20 with the mass ratio of hybrid filtering thing；
(5) after its heating terminates, take out mixture, and make it naturally cool to room temperature, move it to a container
In, and add mixture quality 10～the polyvinyl alcohol of 15% to it, and to its stirring until uniformly, treat all
After even, it is carried out cold drying, then is placed in discharging machine and is stirred discharging,.
A kind of iron-based biological carbon materials, its preparation technology charcoal the most according to claim 1 and it is at soil
Application in earth pollution control, it is characterised in that: its concrete applying step is: by the charcoal of above-mentioned preparation with
Deionized water 1:100 in mass ratio carries out mixing until uniformly, utilizing spray gun to carry out being sprayed on containing heavy metal chromium
In soil, averagely every square is spilled into 400～500mL, and after being spilled into end, it is right that standing 1～2h can complete
The process of heavy metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610159204.9A CN105838378A (en) | 2016-03-18 | 2016-03-18 | Iron-based biochar material, and biochar preparation process and application thereof in soil pollution control |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610159204.9A CN105838378A (en) | 2016-03-18 | 2016-03-18 | Iron-based biochar material, and biochar preparation process and application thereof in soil pollution control |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106833657A (en) * | 2016-11-29 | 2017-06-13 | 中冶华天工程技术有限公司 | Combined contamination soil renovation agent and application process |
| CN112828027A (en) * | 2020-12-29 | 2021-05-25 | 北京大学 | Method for in-situ conditioning, inhibiting and long-acting repairing of heavy metal contaminated soil |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104388094A (en) * | 2014-10-13 | 2015-03-04 | 广东省生态环境与土壤研究所（广东省土壤科学博物馆） | Iron-based bio-char material, preparation process thereof, and application thereof in soil pollution treatment |
-
2016
- 2016-03-18 CN CN201610159204.9A patent/CN105838378A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104388094A (en) * | 2014-10-13 | 2015-03-04 | 广东省生态环境与土壤研究所（广东省土壤科学博物馆） | Iron-based bio-char material, preparation process thereof, and application thereof in soil pollution treatment |
Non-Patent Citations (3)
| Title |
|---|
| 孙英杰、孙晓杰: "《冶金企业污染土壤和地下水整治修护》", 31 January 2008 * |
| 张强: "《农业高科技温室工程项目规范化建设与管理实用手册》", 30 September 2003 * |
| 徐延熙: "《农村沼气实用技术》", 29 February 2016 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106833657A (en) * | 2016-11-29 | 2017-06-13 | 中冶华天工程技术有限公司 | Combined contamination soil renovation agent and application process |
| CN112828027A (en) * | 2020-12-29 | 2021-05-25 | 北京大学 | Method for in-situ conditioning, inhibiting and long-acting repairing of heavy metal contaminated soil |
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Application publication date: 20160810 |