CN103433275A - Fulvic acid-potassium chloride combined eluant, and preparation method and application thereof - Google Patents
Fulvic acid-potassium chloride combined eluant, and preparation method and application thereof Download PDFInfo
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- CN103433275A CN103433275A CN2013103735132A CN201310373513A CN103433275A CN 103433275 A CN103433275 A CN 103433275A CN 2013103735132 A CN2013103735132 A CN 2013103735132A CN 201310373513 A CN201310373513 A CN 201310373513A CN 103433275 A CN103433275 A CN 103433275A
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Abstract
The invention discloses a fulvic acid-potassium chloride combined eluant, and a preparation method and application thereof, relating to the technical field of restoration of heavy metal pollution in soil. According to the invention, humic acids with different qualities for restoring heavy metal cadmium polluted soil are dissolved in a 0.1m/L potassium chloride solution, a 0.1m/L sodium hydroxide solution is utilized to regulate the pH value to 11 or so to prepare a 0.05-1.00% humic acid solution, centrifugation is performed, and the separated solution is a fulvic acid-potassium chloride mixed solution; and the fulvic acid-potassium chloride mixed solution can be used as a combined eluant to elute the cadmium polluted soil. The chemical eluant used in the invention has the advantages of simple formula, obvious effect, strong operability, low application cost, high elution rate and high removal effect for cadmium ions in soil. The test indicates that the elution rate is optimal when the concentration of the eluate is 0.05%, the pH value is 4, the volume ratio of the eluant to the cadmium polluted soil is 10:1 and the elution time is 2 hours; and the eluate can not generate secondary pollution to the soil, and has an obvious supplementation action on potassium lost in the elution process.
Description
Technical field
The invention discloses a kind of fulvic acid and potassium chloride combination eluent and preparation method thereof and application thereof, relate to the recovery technique field that heavy metal in soil pollutes, is eluent and application that rehabilitating soil cadmium (Cd) pollutes specifically.
Background technology
Heavy metal pollution of soil is one of serious environmental problems of facing of the current whole world.Improvement for Cadmium Pollution in Soils at present adopts plant restoration method more.Yet because recommended heavy metal accumulation or super enriching plant often have that biomass is low, repairing efficiency long, are subject to the characteristics such as climatic effect, thereby it is low to repair benefit.
Soil washing belongs to the heavy metal chemical repair method, is to utilize chemistry or biological eluent to strengthen the animal migration of heavy metal in soil, thereby heavy metal is effectively removed from soil.In scientific research and practice, the normal eluent used comprises inorganic eluent, artificial chelating agent, biosurfactant etc.Yet research shows strong acid eluent meeting spoiled soil structure in lessivation, the biocoene of poisoning in soil causes soil again to utilize; Its biological degradability of EDTA, EDDS and surfactant is poor, and production cost is high, easily causes secondary pollution (Dermont, et al., 2007).And repair object and mainly concentrate on mine, smeltery, the drip washing of the serious pollution soil and water heavy metal pollutions such as municipal sludge (Moutsatsou, et al., 2006).
Humic acid is the polymeric set compound consisted of multiple functional group, and extensively in existence and soil environment, current research focus mostly in inquire into humic acid to water body environment in the Adsorption and desorption characteristics of heavy metal or the miscellaneous function in phytoremediation, and each component in humic acid especially fulvic acid and other agent combination are rarely had to report to the ELUTION METHOD of Cadmium Pollution in Soils, and present eluent is not considered the loss of eluent to the soil potassium nutrient, in soil, most of heavy metal is combined with solid phase and is made eluent be restricted the drip washing effect of heavy metal in addition, elution efficiency is not high.
Summary of the invention
The object of the invention is to overcome the deficiency that prior art exists, a kind of fulvic acid and potassium chloride combination eluent and preparation method thereof are provided, and the application of removing Cadmium Pollution in Soils.
In the present invention, fulvic acid and potassium chloride combination eluent are comprised of fulvic acid and potassium chloride.
Fulvic acid of the present invention and potassium chloride combination eluent preparation method, its preparation method is as follows:
A. humic acid is dissolved in the Klorvess Liquid of 0.1m/L, and regulates pH ≈ 11 with the sodium hydroxide solution of 0.1m/L and make the 0.05-1.00%(weight ratio) humic acid solution;
B. the pH=4.0 of the humic acid solution of regulating step a preparation, centrifugal after solution produces precipitation, gets its clear liquid, makes fulvic acid and potassium chloride combination eluent.
The application of fulvic acid of the present invention and potassium chloride combination eluent, specifically with this eluent, cadmium pollution soil is repaired, to the combination eluent that adds above-mentioned concentration in cadmium pollution soil, the volume ratio of described eluent and cadmium pollution soil is 10:1, centrifugal 15min after at room temperature vibrating, gained is precipitated as the soil after drip washing.
The application of fulvic acid of the present invention and potassium chloride combination eluent, when eluent concentration is 0.05%, the volume ratio of pH=4, eluent and cadmium pollution soil is washout rate the best while 10:1, drip washing time being 2h.
Compared with prior art, the present invention has following beneficial effect:
1. the present invention's chemical leaching agent prescription used is simple, effect is remarkable, application cost is low, washout rate is high, and the cadmium ion existed in soil is had to obvious removal effect.
2. the present invention's chemical leaching method used is for cadmium pollution soil, and can be to the eluent processing time, and the parameters such as concentration are adjusted.By test, show: when eluent concentration is 0.05%, the volume ratio of pH=4, eluent and cadmium pollution soil is that while 10:1 and drip washing time being 2h, washout rate reaches more than 80%, thereby shows the outstanding drip washing effect of this eluent to cadmium pollution soil.
3. this combination eluent has obvious supplementary function to the soil potassium lost in lessivation.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is described in detail
At first different quality is dissolved in to the Klorvess Liquid of 0.1m/L for the humic acid of remediating heavy metal cadmium pollution soil, and the sodium hydroxide solution by 0.1m/L is regulated pH to 11 and is made concentration and be respectively 0.05%, 0.10%, 0.20%, 0.50%, 1.00% humic acid solution, adjust subsequently pH to 4.0 separation of solution with the nitric acid of 0.1m/L, make the combination eluent of fulvic acid and 0.1m/L potassium chloride.The contaminated soil that to choose cadmium content be 18.76mg/kg adds eluent according to liquid-solid volume ratio 10:1.At room temperature vibrated, hunting speed is 200 rev/mins.Subsequently eluate is transferred in centrifuge tube with the speed of 4000 rev/mins to centrifugal 15 minutes, got its supernatant liquid filtering and collect, and utilizing atomic absorption spectrophotometry light instrument degree to measure the content (accompanying drawing 1) of Cd in leacheate.Can find out from accompanying drawing 1, when the drip washing time is 2h when concentration is 0.05%, the cadmium pollution soil washout rate be reached to 98%.
Embodiment 2
In order to explore the impact of combination eluent on soil potassium, choose in embodiment 1 soil of using after fulvic acid and potassium chloride combine eluent drip washing, and choose only with the soil after single fulvic acid drip washing in contrast simultaneously, measure respectively the content of potassium in soil.Fulvic acid in the present embodiment is obtained by 0.05% humic acid solution separation, choose the contaminated soil that cadmium content is 18.76mg/kg, according to eluent concentration be 0.05%, the volume ratio of pH=4, eluent and cadmium pollution soil is that 10:1, drip washing time are the soil that 2h obtains, and chooses in embodiment 1
0.05% fulvic acid and potassium chloride combination eluent, when eluent concentration is 0.05%, the volume ratio of pH=4, eluent and cadmium pollution soil is the soil while 10:1, drip washing time being 2h.Can find out that from accompanying drawing 2 potassium content of soil is significantly higher than single fulvic acid washed off soil after combination eluent drip washing, thereby show this combination eluent, the soil potassium lost in lessivation be had to obvious supplementary function.
The Soil leaching rate computing formula and the parameter-definition that in example of the present invention, relate to are as follows:
(1) the content of beary metal M(mg kg that eluent washes out
-1) computing formula
In formula:
M---eluent washes out
content (the mg kg of heavy metal in soil
-1);
Heavy metal mass concentration (the mg L that C---flame photometer records
-1)
The volume (ml) of V---constant volume in volumetric flask;
D---to the multiple of raw sample solution dilution;
M---pedotheque quality (g)
(2) clearance (%) computing formula of eluent to heavy metal
In formula:
The clearance (%) of R---eluent to heavy metal;
Content of beary metal in the soil that M---eluent washes out (mg kg
-1);
M is complete---content of beary metal (the mg kg that soil is whole
-1)
The accompanying drawing explanation
Fig. 1 is that variable concentrations humic acid and 0.1m/L potassium chloride combine the washout rate figure of eluent to cadmium;
Fig. 2 is that different eluents are processed soil potassium content figure.
Claims (4)
1. a fulvic acid and potassium chloride combination eluent, it is characterized in that: this eluent is comprised of fulvic acid and potassium chloride.
2. a fulvic acid claimed in claim 1 and potassium chloride combination eluent preparation method, its preparation method is as follows:
A. humic acid is dissolved in the Klorvess Liquid of 0.1m/L, and regulates pH ≈ 11 with the sodium hydroxide solution of 0.1m/L and make the 0.05-1.00%(weight ratio) humic acid solution;
B. the pH=4.0 of the humic acid solution of regulating step a preparation, centrifugal after solution produces precipitation, gets its clear liquid, makes fulvic acid and potassium chloride combination eluent.
3. the application of a fulvic acid claimed in claim 1 and potassium chloride combination eluent is characterized in that: to the combination eluent that adds above-mentioned concentration in cadmium pollution soil, the volume ratio of described eluent and cadmium pollution soil is 10:1.
4. the application of fulvic acid according to claim 3 and potassium chloride combination eluent is characterized in that: eluent concentration is 0.05%, the volume ratio of pH=4, eluent and cadmium pollution soil is 10:1, and the drip washing time is while being 2h.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706629A (en) * | 2013-12-20 | 2014-04-09 | 四川农业大学 | Method for removing cadmium in contaminated soil through watermelon peel leaching |
| CN103817147A (en) * | 2014-02-17 | 2014-05-28 | 四川农业大学 | Method utilizing potassium chloride leaching liquor of edible fungus dreg or wine dreg to rinse polluted soil in order to remove cadmium in polluted soil |
| CN107057710A (en) * | 2017-03-15 | 2017-08-18 | 中国科学院烟台海岸带研究所 | A kind of heavy metal-polluted soil eluent, preparation method, application method and method for treating waste liquid |
| CN109290362A (en) * | 2018-11-12 | 2019-02-01 | 湖南农业大学 | A kind of method of quick reduction soil full cadmium and effective cadmium content |
| CN109762568A (en) * | 2019-03-08 | 2019-05-17 | 河南沐天农业科技有限公司 | A kind of preparation method and applications of fulvic acid biological bacteria modifying agent |
| CN109777429A (en) * | 2019-02-18 | 2019-05-21 | 浙江省农业科学院 | Humic acid source heavy metal-polluted soil available state adjusting control agent and its application |
| CN113083873A (en) * | 2021-03-23 | 2021-07-09 | 华南理工大学 | Mineral fractionation soluble organic matter material, preparation method thereof and application thereof in heavy metal passivation |
| CN115338249A (en) * | 2022-08-19 | 2022-11-15 | 生态环境部南京环境科学研究所 | Optimization method for restoring arsenic-cadmium polluted soil by leaching humic acid based on D-optimal design |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049412A (en) * | 2009-11-05 | 2011-05-11 | 南开大学 | Biological compound preparation for repairing soil heavy metal pollution |
| CN102319729A (en) * | 2011-07-30 | 2012-01-18 | 台州职业技术学院 | New method for combined remediation of compound contaminated soil |
| CN102550603A (en) * | 2010-12-29 | 2012-07-11 | 北京市松浦经贸发展公司 | Extraction method of mineral concentrate for environmental restoration and application thereof |
-
2013
- 2013-08-23 CN CN201310373513.2A patent/CN103433275B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049412A (en) * | 2009-11-05 | 2011-05-11 | 南开大学 | Biological compound preparation for repairing soil heavy metal pollution |
| CN102550603A (en) * | 2010-12-29 | 2012-07-11 | 北京市松浦经贸发展公司 | Extraction method of mineral concentrate for environmental restoration and application thereof |
| CN102319729A (en) * | 2011-07-30 | 2012-01-18 | 台州职业技术学院 | New method for combined remediation of compound contaminated soil |
Non-Patent Citations (2)
| Title |
|---|
| 王宏韬等: "腐植酸在土壤与肥料中的应用", 《黑龙江科学》 * |
| 胡书燕: "腐殖酸对重金属的吸附作用及金属竞争吸附特征", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706629A (en) * | 2013-12-20 | 2014-04-09 | 四川农业大学 | Method for removing cadmium in contaminated soil through watermelon peel leaching |
| CN103706629B (en) * | 2013-12-20 | 2017-01-25 | 四川农业大学 | Method for removing cadmium in contaminated soil through watermelon peel leaching |
| CN103817147A (en) * | 2014-02-17 | 2014-05-28 | 四川农业大学 | Method utilizing potassium chloride leaching liquor of edible fungus dreg or wine dreg to rinse polluted soil in order to remove cadmium in polluted soil |
| CN103817147B (en) * | 2014-02-17 | 2016-04-27 | 四川农业大学 | A kind of method utilizing the potassium chloride leaching liquor drip washing of edible fungi residues or schlempe to remove Cadium In Polluted Soil |
| CN107057710A (en) * | 2017-03-15 | 2017-08-18 | 中国科学院烟台海岸带研究所 | A kind of heavy metal-polluted soil eluent, preparation method, application method and method for treating waste liquid |
| CN109290362A (en) * | 2018-11-12 | 2019-02-01 | 湖南农业大学 | A kind of method of quick reduction soil full cadmium and effective cadmium content |
| CN109777429A (en) * | 2019-02-18 | 2019-05-21 | 浙江省农业科学院 | Humic acid source heavy metal-polluted soil available state adjusting control agent and its application |
| CN109762568A (en) * | 2019-03-08 | 2019-05-17 | 河南沐天农业科技有限公司 | A kind of preparation method and applications of fulvic acid biological bacteria modifying agent |
| CN113083873A (en) * | 2021-03-23 | 2021-07-09 | 华南理工大学 | Mineral fractionation soluble organic matter material, preparation method thereof and application thereof in heavy metal passivation |
| CN115338249A (en) * | 2022-08-19 | 2022-11-15 | 生态环境部南京环境科学研究所 | Optimization method for restoring arsenic-cadmium polluted soil by leaching humic acid based on D-optimal design |
| CN115338249B (en) * | 2022-08-19 | 2023-04-07 | 生态环境部南京环境科学研究所 | Optimization method for restoring arsenic-cadmium polluted soil by leaching humic acid based on D-optimal design |
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