CN109675917A - A method of utilizing agricultural crop straw rehabilitating soil - Google Patents
A method of utilizing agricultural crop straw rehabilitating soil Download PDFInfo
- Publication number
- CN109675917A CN109675917A CN201811630133.1A CN201811630133A CN109675917A CN 109675917 A CN109675917 A CN 109675917A CN 201811630133 A CN201811630133 A CN 201811630133A CN 109675917 A CN109675917 A CN 109675917A
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- China
- Prior art keywords
- soil
- added
- naoh solution
- stalk
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
Abstract
The present invention provides a kind of methods using agricultural crop straw rehabilitating soil, the following steps are included: the stalk cleaning, drying acquired from farmland is cut into segment by (1), taking out 10g segment stalk, addition NaOH solution 500mL reacts at room temperature for the first time, NaOH solution 100mL is added second after draining, epoxychloropropane 25mL is washed with water to neutrality after reaction and obtains modified straw；(2) it is reacted under conditions of anoxic, the charcoal after reaction is ground, cross 60 meshes, it is spare；(3) charcoal prepared is added in soil according to 4% parts by weight ratio, is cultivated at normal temperature, and take normal light application time in nature, added the humidity of water holding soil and soil of stirring every day is primary, cultivate two weeks.The problem of present invention utilizes stalk rehabilitating soil, not only efficiently solves the heavy metal pollution in soil, additionally it is possible to so that Wastes of Crops --- stalk is able to resource utilization, reduces costs, and has biggish economic value and application prospect.
Description
Technical field
The present invention relates to technical field of soil remediation, and in particular to a method of utilize agricultural crop straw rehabilitating soil.
Background technique
As heavy metal pollution of soil increasingly sharpens, heavy metal enters in environment by all means, to ecological environment
Existence with the mankind causes potential threat.The heavy metal pollution phenomenon of current China agricultural environment is extremely serious.According to
Statistics, nowadays the whole nation has reached 2000hm by the cultivated area of heavy-metal contaminated soil2, China has more than 1000 every year
The grain of ten thousand t leads to the underproduction and waste because of heavy metal pollution, has the grain of about 12,000,000 t contaminated, economic loss reaches
20000000000 yuan or so.
Currently, administer heavy-metal contaminated soil in using more method be by add foreign substance, to change soil
The chemical property of earth, such as by adjusting soil acidity or alkalinity, oxidation-reduction potential and cation exchange capacity (CEC), or directly and with much money
Symbolic animal of the birth year combines, thus change form and its biological effectiveness of heavy metal etc., it is final to inhibit or reduce suction of the crop to heavy metal
It receives.
Method currently used more is that modifying agent is added into soil, such as phosphate, lime, silicate.But this
After a little substances are added in soil for a long time, it is be easy to cause soil hardening, soil ecology is had adverse effect on.Stalk is farming
An important living resources in biological production system, yield is larger, but these resource long-terms do not obtain reasonably developing benefit
With.Stalk can improve soil porosity as a kind of organic materials, after being added in soil, reduce the soil weight, improve water
Divide permeability, increases the content of the soil organism.And after processing, oxygen-containing acid functional group in stalk surface increases, to soil
In the various stronger compounds of polarity suction-operated enhancing.Furthermore stalk contributes the increase of humic acid in soil, by
Contain multiple functions group in humic acid, it can be mutual with the generations such as metal ion, minerals, toxic active pollutant in environment
Effect.Therefore, using the heavy metal pollution in modified straw rehabilitating soil, there is weight in terms of the improvement of heavy-metal contaminated soil
Want meaning.
Summary of the invention
The purpose of the present invention is to provide a kind of methods using agricultural crop straw rehabilitating soil, effectively solve in soil
The problem of heavy metal pollution.
To achieve the above object, the present invention provides a kind of method using agricultural crop straw rehabilitating soil, including it is following
Step:
(1) the stalk cleaning, drying acquired from farmland is cut into segment, takes out 10g segment stalk and is added for the first time
NaOH solution 450-500mL reacts at room temperature, NaOH solution 90-100mL, epoxychloropropane 20- is added second after draining
25mL is washed with water to neutrality after reaction and obtains modified straw；
(2) it is reacted under conditions of anoxic, the charcoal after reaction is ground, cross 60 meshes, it is spare；
(3) charcoal prepared is added in soil according to 4% parts by weight ratio, is cultivated at normal temperature, and take
Normal light application time in nature, adds the humidity of water holding soil and soil of stirring every day is primary, cultivates two weeks.
Further, the mass concentration that NaOH solution is added in the step (1) for the first time is 20-25%.
Further, it is 1-1.5h that the time reacted at room temperature after NaOH solution is added in the step (1) for the first time.
Further, the mass concentration that second is added NaOH solution in the step (1) is 10-12%.
Further, the time reacted after second of addition NaOH solution in the step (1) is 22-24h.
Further, the reaction temperature reacted under anoxic conditions in the step (2) is 350-400 DEG C.
Further, the time reacted under anoxic conditions in the step (2) is 4-5h.
The present invention has the advantages that
General additive is high come the heavy metal pollution price for administering soil, and is used for a long time and can cause one to soil environment
Fixed harm, but the present invention utilizes stalk rehabilitating soil, the problem of not only efficiently solving the heavy metal pollution in soil, also
Enabling to Wastes of Crops --- stalk is able to resource utilization, reduces costs, and has biggish economic value and application
Prospect.
Specific embodiment
The present invention will be further described With reference to embodiment, following embodiment be intended to illustrate invention without
It is limitation of the invention further.
Raw material of the present invention can synthesize commercially or according to the prior art.
Embodiment 1
A method of utilizing agricultural crop straw rehabilitating soil, comprising the following steps:
(1) the stalk cleaning, drying acquired from farmland is cut into segment, taking out 10g and mass concentration is added is 20%
NaOH solution 500mL reacts 1h at room temperature, and the NaOH solution 90mL that mass concentration is 10%, epoxy chloropropionate are added after draining
Alkane 25mL, reaction is washed with water to neutrality afterwards for 24 hours obtains modified straw；
(2) 4h is reacted under conditions of 350 DEG C of anoxic, the charcoal after reaction is ground, cross 60 meshes, it is spare；
(3) charcoal prepared is added in soil according to 4% parts by weight ratio, is cultivated at normal temperature, and take
Naturally the normal light application time of palm fibre, adds the humidity of water holding soil and soil of stirring every day is primary, cultivates two weeks.
Embodiment 2:
A method of utilizing agricultural crop straw rehabilitating soil, comprising the following steps:
(1) the stalk cleaning, drying acquired from farmland is cut into segment, taking out 10g and mass concentration is added is 22%
NaOH solution 470mL reacts 1.2h at room temperature, and the NaOH solution 95mL that mass concentration is 10%, epoxy chloropropionate are added after draining
It is washed with water after alkane 22mL, reaction 23h to neutrality and obtains modified straw；
(2) 4.5h is reacted under conditions of 370 DEG C of anoxic, the charcoal after reaction is ground, cross 60 meshes, it is spare；
(3) charcoal prepared is added in soil according to 4% parts by weight ratio, is cultivated at normal temperature, and take
Naturally the normal light application time of palm fibre, adds the humidity of water holding soil and soil of stirring every day is primary, cultivates two weeks.
Embodiment 3
A method of utilizing agricultural crop straw rehabilitating soil, comprising the following steps:
(1) the stalk cleaning, drying acquired from farmland is cut into segment, taking out 10g and mass concentration is added is 24%
NaOH solution 490mL reacts 1h at room temperature, and the NaOH solution 100mL that mass concentration is 10%, epoxy chloropropionate are added after draining
Alkane 25mL, reaction is washed with water to neutrality afterwards for 24 hours obtains modified straw；
(2) 4.8h is reacted under conditions of 350 DEG C of anoxic, the charcoal after reaction is ground, cross 60 meshes, it is spare；
(3) charcoal prepared is added in soil according to 4% parts by weight ratio, is cultivated at normal temperature, and take
Naturally the normal light application time of palm fibre, adds the humidity of water holding soil and soil of stirring every day is primary, cultivates two weeks.
Embodiment 4
A method of utilizing agricultural crop straw rehabilitating soil, comprising the following steps:
(1) the stalk cleaning, drying acquired from farmland is cut into segment, taking out 10g and mass concentration is added is 20%
NaOH solution 500mL reacts 1h at room temperature, and the NaOH solution 100mL that mass concentration is 10%, epoxy chloropropionate are added after draining
Alkane 25mL, reaction is washed with water to neutrality afterwards for 24 hours obtains modified straw；
(2) 5h is reacted under conditions of 350 DEG C of anoxic, the charcoal after reaction is ground, cross 60 meshes, it is spare；
(3) charcoal prepared is added in soil according to 4% parts by weight ratio, is cultivated at normal temperature, and take
Naturally the normal light application time of palm fibre, adds the humidity of water holding soil and soil of stirring every day is primary, cultivates two weeks.
Finally, it should be noted that above embodiments are only to illustrate the present invention and not limit technology described in the invention
Scheme；Those skilled in the art should understand that still can modify to the present invention or equivalent replacement；And all are not
It is detached from the technical solution and its improvement of the spirit and scope of the present invention, should all be covered within the scope of the claims of the present invention.
Claims (7)
1. a kind of method using agricultural crop straw rehabilitating soil, which comprises the following steps:
(1) the stalk cleaning, drying acquired from farmland is cut into segment, taking out 10g segment stalk, addition NaOH is molten for the first time
Liquid 450-500mL reacts at room temperature, NaOH solution 90-100mL, epoxychloropropane 20-25mL is added second after draining, instead
Should after be washed with water to neutrality and obtain modified straw；
(2) it is reacted under conditions of anoxic, the charcoal after reaction is ground, cross 60 meshes, it is spare；
(3) charcoal prepared is added in soil according to 4% parts by weight ratio, is cultivated at normal temperature, and take nature
In normal light application time, add water keep soil humidity and soil of stirring every day it is primary, cultivate two weeks.
2. method according to claim 1, which is characterized in that NaOH solution is added in the step (1) for the first time
Mass concentration is 20-25%.
3. method according to claim 1, which is characterized in that after NaOH solution is added for the first time in the step (1)
The time reacted at room temperature is 1-1.5h.
4. method according to claim 1, which is characterized in that NaOH solution is added second in the step (1)
Mass concentration is 10-12%.
5. method according to claim 1, which is characterized in that in the step (1) after second of addition NaOH solution
The time of reaction is 22-24h.
6. method according to claim 1, which is characterized in that react anti-under anoxic conditions in the step (2)
Answering temperature is 350-400 DEG C.
7. method according to claim 1, which is characterized in that reacted under anoxic conditions in the step (2) when
Between be 4-5h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811630133.1A CN109675917A (en) | 2018-12-29 | 2018-12-29 | A method of utilizing agricultural crop straw rehabilitating soil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811630133.1A CN109675917A (en) | 2018-12-29 | 2018-12-29 | A method of utilizing agricultural crop straw rehabilitating soil |
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| CN109675917A true CN109675917A (en) | 2019-04-26 |
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| CN201811630133.1A Pending CN109675917A (en) | 2018-12-29 | 2018-12-29 | A method of utilizing agricultural crop straw rehabilitating soil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111171830A (en) * | 2019-12-18 | 2020-05-19 | 浙江慧丰环保科技有限公司 | Passivator for soil heavy metal pollution treatment and preparation method thereof |
| CN114702351A (en) * | 2022-04-18 | 2022-07-05 | 香港科技大学 | Modified biochar and preparation method and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014059141A1 (en) * | 2012-10-11 | 2014-04-17 | Biochar Now, Llc | Modified biochar treatment media, system and method |
| CN104307855A (en) * | 2014-09-30 | 2015-01-28 | 武汉科技大学 | Method for repairing heavy metal contaminated soil in situ by adopting multifunctional biological charcoal |
| CN106076254A (en) * | 2016-06-24 | 2016-11-09 | 南京宇行环保科技有限公司 | A kind of preparation method of the charcoal for cadmium pollution soil repair |
| CN106590676A (en) * | 2016-12-02 | 2017-04-26 | 重庆市江津区森德家庭农场 | Microbe composite soil amendment and preparation method thereof |
| CN107081334A (en) * | 2017-06-12 | 2017-08-22 | 湖南科技大学 | The method of safe Planting Crops on soil polluted by manganese |
| CN107199235A (en) * | 2017-06-08 | 2017-09-26 | 四川农业大学 | Based on pyrolytical condition to tealeaf residue charcoal characteristic and cadmium pollution soil restorative procedure |
-
2018
- 2018-12-29 CN CN201811630133.1A patent/CN109675917A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014059141A1 (en) * | 2012-10-11 | 2014-04-17 | Biochar Now, Llc | Modified biochar treatment media, system and method |
| CN104307855A (en) * | 2014-09-30 | 2015-01-28 | 武汉科技大学 | Method for repairing heavy metal contaminated soil in situ by adopting multifunctional biological charcoal |
| CN106076254A (en) * | 2016-06-24 | 2016-11-09 | 南京宇行环保科技有限公司 | A kind of preparation method of the charcoal for cadmium pollution soil repair |
| CN106590676A (en) * | 2016-12-02 | 2017-04-26 | 重庆市江津区森德家庭农场 | Microbe composite soil amendment and preparation method thereof |
| CN107199235A (en) * | 2017-06-08 | 2017-09-26 | 四川农业大学 | Based on pyrolytical condition to tealeaf residue charcoal characteristic and cadmium pollution soil restorative procedure |
| CN107081334A (en) * | 2017-06-12 | 2017-08-22 | 湖南科技大学 | The method of safe Planting Crops on soil polluted by manganese |
Non-Patent Citations (1)
| Title |
|---|
| 杨为森等: "环氧氯丙烷改性橙皮对含 Ｐｂ２＋ 废水的吸附研究", 《长江大学学报 （自科版）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111171830A (en) * | 2019-12-18 | 2020-05-19 | 浙江慧丰环保科技有限公司 | Passivator for soil heavy metal pollution treatment and preparation method thereof |
| CN114702351A (en) * | 2022-04-18 | 2022-07-05 | 香港科技大学 | Modified biochar and preparation method and application thereof |
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