CN104388096A - Bagasse composite soil conditioner preparation method - Google Patents
Bagasse composite soil conditioner preparation method Download PDFInfo
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- CN104388096A CN104388096A CN201410497157.XA CN201410497157A CN104388096A CN 104388096 A CN104388096 A CN 104388096A CN 201410497157 A CN201410497157 A CN 201410497157A CN 104388096 A CN104388096 A CN 104388096A
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- bagasse
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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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- Inorganic Chemistry (AREA)
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Abstract
The present invention discloses a bagasse composite soil conditioner preparation method, wherein the main byproduct bagasse of sugar production from sugarcane is adopted as a raw material, and is combined with starch and kaolin through a graft copolymerization method so as to prepare the soil conditioner having high heavy metal adsorption capacity, wherein the bagasse contains a lot of cellulose, such that the application of the bagasse to prepare the soil repair agent has economic values and significant environmental significance. According to the present invention, the main byproduct bagasse of the sugar production industry and the natural products such as starch and kaolin are adopted as the raw materials, the characteristics of reasonable process route and reliable product performance are provided, the prepared composite material has the high heavy metal adsorption and the high soil repair capability, the method has advantages of increase of the comprehensive utilization of the sugar mill byproduct, no secondary pollution and the like, and the soil repair agent prepared by using the method can effectively absorb heavy metals in the soil, wherein the cadmium adsorption rate achieves more than 45%, and the copper adsorption rate achieves more than 52%.
Description
Technical field
The present invention relates to chemical technology field, particularly relate to a kind of preparation method of bagasse composite soil modifier.
Background technology
" national Soil Pollution Investigation publication " that Chinese Ministry of Environmental Protection and Ministry of Land and Resources combine issue on April 17th, 2014 is pointed out, China's arable soil point position pollutent exceeding standard rate is 19.4%, principal pollutant type is based on inorganic type, organic type takes second place, compound pollution proportion is less, and an inorganic pollutant figure place that exceeds standard accounts for 82.8% of all super punctuation bits.To exceed standard situation from pollutent, the inorganic pollution object point position exceeding standard rate such as cadmium, arsenic, copper are respectively 7.0%, 2.7%, 2.1%.
Compare with topsoil with water body, soil pollution has disguise, hysteresis quality and difficult reversibility.Because heavy metal is difficult to degraded, heavy metal is caused to be a process that can not reverse completely substantially to the pollution of soil.Soil pollution, once occur, only relies on the method cutting off source of pollution to be difficult to recover.On the whole, the cost of improvement soil pollution is high, the cycle is long, difficulty is large.
Summary of the invention
The present invention, is combined with starch, kaolin by grafting copolymerization process for raw material with the Main By product bagasse of cane sugar manufacture, and preparation has the soil-repairing agent of heavy metal high absorption capacity.Containing a large amount of Mierocrystalline cellulose in bagasse, utilize bagasse to prepare soil-repairing agent and not only there is economic worth, also there is significant environment protection significance, and provide new thinking for the comprehensive utilization of bagasse.
The technical scheme that the present invention takes is:
The concrete steps of the preparation method of bagasse composite soil modifier of the present invention are as follows:
(1) first bagasse is crossed 100 mesh sieves, then in the bagasse after sieving, add sodium hydroxide solution, then boiling 1h at 120 DEG C, then be washed till neutrality with distilled water, then dry at 105 DEG C, be cooled to room temperature for subsequent use;
(2) bagasse after step (1) process and starch is taken, the weight ratio of bagasse and starch is 1-5:1, then mix, add vinylformic acid again, the weight ratio of vinylformic acid and bagasse is 7-15:1, add sodium hydroxide again to degree of neutralization 60-70%, add ammonium persulphate again, N, N '-methylene-bisacrylamide, kaolin and distilled water, ammonium persulphate add-on is the 1-2% of vinylformic acid weight, N, N '-methylene-bisacrylamide add-on is the 0.10-0.40% of vinylformic acid weight, kaolin add-on is the 4-8% of vinylformic acid weight, distilled water and vinylformic acid envelope-bulk to weight ratio are 30-50:11ml/g, then 65 DEG C of waters bath with thermostatic control are put into, stir 2.5h,
(3) product that step (2) obtains is used distilled water, washing with alcohol three times successively, then purify 24h with acetone through soxhlet type, dry to constant weight, obtained soil improvement agent of the present invention.
In step (1), the concentration of sodium hydroxide solution is 4mol/L, and the envelope-bulk to weight ratio of sodium hydroxide solution and bagasse is 100:3ml/g.
In step (2), the weight ratio of bagasse and starch is preferably 3:1.
In step (2), the weight ratio of vinylformic acid and bagasse is preferably 11:1.
In step (2), preferably add sodium hydroxide to degree of neutralization 65%.
In step (2), initiator system of ammonium persulfate add-on is 1.5%, N, N of vinylformic acid weight '-methylene-bisacrylamide add-on is 0.25% of vinylformic acid weight, kaolin add-on is 6% of vinylformic acid weight, and distilled water and vinylformic acid envelope-bulk to weight ratio are 40:11ml/g.
The present invention proposes with bagasse, starch, kaolin for main raw material, and ammonium persulphate is initiator, and N,N methylene bis acrylamide is linking agent, adopts the soil-repairing agent of the method synthesis heavy metal high absorbability of solution graft polymerization.Preparation were established is reasonable, and product performance are stablized, and effectively can improve the comprehensive utilization of sugar refinery by product, without advantages such as secondary environmental pollution problems.
Positively effect of the present invention is as follows:
The present invention utilizes sugar industry principal by product bagasse and natural product starch, kaolin is raw material, operational path is reasonable, product performance are reliable, prepare the soil remediation ability that gained matrix material has heavy metal high absorbability, this method have can improve sugar refinery by product comprehensive utilization, without advantages such as secondary environmental pollutions.
Utilize this legal system effectively can absorb heavy metal element in soil for gained soil-repairing agent, more than 45% is reached to cadmium adsorption rate; Polluted by copper rate reaches more than 52%.
Embodiment
The following examples describe in further detail of the present invention.
Embodiment 1
(1) first bagasse is crossed 100 mesh sieves, then in the bagasse after sieving, add sodium hydroxide solution, then boiling 1h at 120 DEG C, then be washed till neutrality with distilled water, then dry at 105 DEG C, be cooled to room temperature for subsequent use;
(2) bagasse after step (1) process and starch is taken, the weight ratio of bagasse and starch is 1:1, then mix, add vinylformic acid again, the weight ratio of vinylformic acid and bagasse is 7:1, add sodium hydroxide again to degree of neutralization 60%, add ammonium persulphate again, N, N '-methylene-bisacrylamide, kaolin and distilled water, ammonium persulphate add-on is 1% of vinylformic acid weight, N, N '-methylene-bisacrylamide add-on is 0.10% of vinylformic acid weight, kaolin add-on is 4% of vinylformic acid weight, distilled water and vinylformic acid envelope-bulk to weight ratio are 30:11ml/g, then 65 DEG C of waters bath with thermostatic control are put into, stir 2.5h,
(3) product that step (2) obtains is used distilled water, washing with alcohol three times successively, then purify 24h with acetone through soxhlet type, dry to constant weight, obtained soil improvement agent of the present invention.
In step (1), the concentration of sodium hydroxide solution is 4mol/L, and the envelope-bulk to weight ratio of sodium hydroxide solution and bagasse is 100:3ml/g.
Embodiment 2
(1) first bagasse is crossed 100 mesh sieves, then in the bagasse after sieving, add sodium hydroxide solution, then boiling 1h at 120 DEG C, then be washed till neutrality with distilled water, then dry at 105 DEG C, be cooled to room temperature for subsequent use;
(2) bagasse after step (1) process and starch is taken, the weight ratio of bagasse and starch is 5:1, then mix, add vinylformic acid again, the weight ratio of vinylformic acid and bagasse is 15:1, add sodium hydroxide again to degree of neutralization 70%, add ammonium persulphate again, N, N '-methylene-bisacrylamide, kaolin and distilled water, ammonium persulphate add-on is 2% of vinylformic acid weight, N, N '-methylene-bisacrylamide add-on is 0.40% of vinylformic acid weight, kaolin add-on is 8% of vinylformic acid weight, distilled water and vinylformic acid envelope-bulk to weight ratio are 50:11ml/g, then 65 DEG C of waters bath with thermostatic control are put into, stir 2.5h,
(3) product that step (2) obtains is used distilled water, washing with alcohol three times successively, then purify 24h with acetone through soxhlet type, dry to constant weight, obtained soil improvement agent of the present invention.
In step (1), the concentration of sodium hydroxide solution is 4mol/L, and the envelope-bulk to weight ratio of sodium hydroxide solution and bagasse is 100:3ml/g.
Embodiment 3
(1) first bagasse is crossed 100 mesh sieves, then in the bagasse after sieving, add sodium hydroxide solution, then boiling 1h at 120 DEG C, then be washed till neutrality with distilled water, then dry at 105 DEG C, be cooled to room temperature for subsequent use;
(2) bagasse after step (1) process and starch is taken, the weight ratio of bagasse and starch is 3:1, then mix, add vinylformic acid again, the weight ratio of vinylformic acid and bagasse is 11:1, add sodium hydroxide again to degree of neutralization 65%, add ammonium persulphate again, N, N '-methylene-bisacrylamide, kaolin and distilled water, ammonium persulphate add-on is 1.5% of vinylformic acid weight, N, N '-methylene-bisacrylamide add-on is 0.25% of vinylformic acid weight, kaolin add-on is 6% of vinylformic acid weight, distilled water and vinylformic acid envelope-bulk to weight ratio are 40:11ml/g, then 65 DEG C of waters bath with thermostatic control are put into, stir 2.5h,
(3) product that step (2) obtains is used distilled water, washing with alcohol three times successively, then purify 24h with acetone through soxhlet type, dry to constant weight, obtained soil improvement agent of the present invention.
In step (1), the concentration of sodium hydroxide solution is 4mol/L, and the envelope-bulk to weight ratio of sodium hydroxide solution and bagasse is 100:3ml/g.
Embodiment 4
The performance of soil improvement agent of the present invention
Utilize this method embodiment 1-3 to prepare gained soil-repairing agent and carry out soil remediation test, concrete test method is as follows:
Cadmium detrmination method:, Cadmium detrmination graphite furnace atomic absorption spectrometry plumbous with reference to GB/T 17141-1997 soil quality.
Cupper determination method: with reference to GB/T 17138-1997 soil quality copper, Direct spectrophotometry atomic absorption spectrophotometry.
Soil remediation experiment is as follows:
The content of Cadmium in Soil, copper is surveyed by GB/T 17141-1997, GB/T 17138-1997.
Take the vessel that 100.0g soil puts into identical table area, the bagasse composite soil modifier taking 0.1g respectively puts into 100 order filter bags, adds the distilled water of 20mL, is laid in by filter bag in soil, be placed on by culture dish in the loft drier of 30 DEG C and be dried to constant weight.Survey the content of Cadmium in Soil, copper by GB/T 17141-1997, GB/T 17138-1997, calculate cadmium, polluted by copper rate.
Experimental result is as shown in table 1:
Table 1
| Sample | Cadmium adsorption rate (%) | Polluted by copper rate (%) |
| Embodiment 1 | 45 | 52 |
| Embodiment 2 | 47 | 55 |
| Embodiment 3 | 51 | 58 |
The bagasse composite soil modifier that as can be seen from Table 1 prepared by the present invention has good repair to soil, wherein reaches more than 45% to cadmium adsorption rate; Polluted by copper rate reaches more than 52%.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalents thereof.
Claims (6)
1. a preparation method for bagasse composite soil modifier, is characterized in that: the concrete steps of described method are as follows:
(1) first bagasse is crossed 100 mesh sieves, then in the bagasse after sieving, add sodium hydroxide solution, then boiling 0.5h at 120 DEG C, then be washed till neutrality with distilled water, then dry at 105 DEG C, be cooled to room temperature for subsequent use;
(2) bagasse after step (1) process and starch is taken, the weight ratio of bagasse and starch is 1-5:1, then mix, add vinylformic acid again, the weight ratio of vinylformic acid and bagasse is 7-15:1, add sodium hydroxide again to degree of neutralization 60-70%, add ammonium persulphate again, N, N '-methylene-bisacrylamide, kaolin and distilled water, ammonium persulphate add-on is the 1-2% of vinylformic acid weight, N, N '-methylene-bisacrylamide add-on is the 0.10-0.40% of vinylformic acid weight, kaolin add-on is the 4-8% of vinylformic acid weight, distilled water and vinylformic acid envelope-bulk to weight ratio are 30-50:11ml/g, then 65 DEG C of waters bath with thermostatic control are put into, stir 2.5h,
(3) product that step (2) obtains is used distilled water, washing with alcohol three times successively, then purify 24h with acetone through soxhlet type, dry to constant weight, obtained soil improvement agent of the present invention.
2. the preparation method of soil improvement agent as claimed in claim 1, it is characterized in that: in step (1), the concentration of sodium hydroxide solution is 4mol/L, and the envelope-bulk to weight ratio of sodium hydroxide solution and bagasse is 100:3ml/g.
3. the preparation method of soil improvement agent as claimed in claim 1, it is characterized in that: in step (2), the weight ratio of bagasse and starch is 3:1.
4. the preparation method of soil improvement agent as claimed in claim 1, it is characterized in that: in step (2), the weight ratio of vinylformic acid and bagasse is 11:1.
5. the preparation method of soil improvement agent as claimed in claim 1, is characterized in that: in step (2), adds sodium hydroxide to degree of neutralization 65%.
6. the preparation method of soil improvement agent as claimed in claim 1, it is characterized in that: in step (2), ammonium persulphate add-on is 1.5% of vinylformic acid weight, N, N '-methylene-bisacrylamide add-on is 0.25% of vinylformic acid weight, kaolin add-on is 6% of vinylformic acid weight, and distilled water and vinylformic acid envelope-bulk to weight ratio are 40:11ml/g.
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Cited By (8)
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| CN104945200A (en) * | 2015-07-03 | 2015-09-30 | 刘彬 | Production method of linter pulp soil remediation agent |
| CN105123169A (en) * | 2015-07-20 | 2015-12-09 | 四川省中药材有限责任公司 | Culture method for reducing cadmium content of Ligusticum chuanxiong hort |
| CN106434614A (en) * | 2016-10-19 | 2017-02-22 | 华南农业大学 | Bagasse immobilized bacterium and application thereof to sulfamethoxazole pollution remediation of farmland soil |
| CN106693922A (en) * | 2016-12-05 | 2017-05-24 | 浙江海洋大学 | Sewage substrate improver |
| CN108264398A (en) * | 2018-02-05 | 2018-07-10 | 广西大学 | A kind of preparation method of bagasse base Slow release organic fertilizer |
| CN108641727A (en) * | 2018-04-25 | 2018-10-12 | 常州市蓝勖化工有限公司 | A kind of preparation method of soil conditioner |
| CN108841395A (en) * | 2018-06-26 | 2018-11-20 | 江苏新亿源环保科技有限公司 | A kind of soil sand-consolidating agent |
| CN109053961A (en) * | 2018-08-13 | 2018-12-21 | 代彦霞 | A kind of soil remediation heavy metal ion repair materials and preparation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104945200A (en) * | 2015-07-03 | 2015-09-30 | 刘彬 | Production method of linter pulp soil remediation agent |
| CN105123169A (en) * | 2015-07-20 | 2015-12-09 | 四川省中药材有限责任公司 | Culture method for reducing cadmium content of Ligusticum chuanxiong hort |
| CN106434614A (en) * | 2016-10-19 | 2017-02-22 | 华南农业大学 | Bagasse immobilized bacterium and application thereof to sulfamethoxazole pollution remediation of farmland soil |
| CN106693922A (en) * | 2016-12-05 | 2017-05-24 | 浙江海洋大学 | Sewage substrate improver |
| CN108264398A (en) * | 2018-02-05 | 2018-07-10 | 广西大学 | A kind of preparation method of bagasse base Slow release organic fertilizer |
| CN108641727A (en) * | 2018-04-25 | 2018-10-12 | 常州市蓝勖化工有限公司 | A kind of preparation method of soil conditioner |
| CN108841395A (en) * | 2018-06-26 | 2018-11-20 | 江苏新亿源环保科技有限公司 | A kind of soil sand-consolidating agent |
| CN109053961A (en) * | 2018-08-13 | 2018-12-21 | 代彦霞 | A kind of soil remediation heavy metal ion repair materials and preparation method thereof |
| CN109053961B (en) * | 2018-08-13 | 2020-12-25 | 蚯蚓测土实验室(山东)有限公司 | Heavy metal ion repairing material for soil repairing and preparation method thereof |
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Application publication date: 20150304 |