CN212652389U - Straw fiber bundle capable of adsorbing soil heavy metal ions - Google Patents
Straw fiber bundle capable of adsorbing soil heavy metal ions Download PDFInfo
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- CN212652389U CN212652389U CN202021351266.8U CN202021351266U CN212652389U CN 212652389 U CN212652389 U CN 212652389U CN 202021351266 U CN202021351266 U CN 202021351266U CN 212652389 U CN212652389 U CN 212652389U
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Abstract
The utility model relates to a can adsorb soil heavy metal ion's straw fiber bundle, including a cylindric geotechnological cloth heavy metal adsorption wrapping bag (1), what load in the geotechnological cloth heavy metal adsorption wrapping bag is straw living beings carbon granule (11), and there is filter layer (12) that the one deck contains the lignin adhesive straw living beings carbon granule on the surface of straw living beings carbon granule, and geotechnological cloth heavy metal adsorption wrapping bag surface is by the inseparable winding of twist form straw fiber bundle (2). The straw fiber bundle can be coiled in soil in various shapes, so that various adsorption effects on soil heavy metal ions are achieved, meanwhile, the straw fiber bundle is easy to take out of the soil after adsorbing heavy metals, and the adsorbed heavy metals cannot be released into the soil again.
Description
The technical field is as follows:
the utility model belongs to the technical field of heavy metal contaminated soil restores, specifically be a straw fiber bundle that can adsorb soil heavy metal ion.
Background art:
the degree of industrialization worldwide has been greatly improved in the last hundred years, people have continuously deepened dependence on various high-tech products (such as chips, batteries, integrated circuit boards and the like) containing heavy metals, people enjoy convenience, comfort and low price brought by technological progress and high industrialization, a series of environmental pollution problems caused by heavy metal wastes are becoming more serious, and particularly, the serious events that the heavy metals such as cadmium, lead and the like pollute agricultural soil and seriously hurt human health have caused high attention and vigilance of human society. At present, the capital investment is increased in various countries, and scientific research personnel are actively organized to research and develop various soil technologies for preventing and repairing heavy metal pollution.
The straws are important renewable crop wastes, have the characteristics of high yield, degradability, low price and the like, and have proved that the straws have certain adsorption effect on heavy metals in water and soil, so people also bury the straws under agricultural soil to try to solve the problem of heavy metal pollution of the soil. However, the straw is degradable biomass, and if the straw which has adsorbed heavy metal ions is not taken out of the polluted soil in time, the heavy metal adsorbed by the straw is released into the soil environment again after the straw is degraded, so that secondary pollution of the soil is caused. In addition, the straw has small porosity and specific surface area, and the adsorption capacity of the straw to heavy metal ions is not large, so the straw is also often processed into straw biomass carbon for adsorbing the heavy metals, the biomass carbon has the characteristic of large specific surface area and strong adsorption capacity to the heavy metals, and document 1 (xunan et al, corn straw biochar for Cd adsorption)2+The agricultural environmental science reports 2014, 33(5): 958-964) introduces biomass carbon prepared from straws, the biomass carbon has higher porosity than the original straws, the biomass carbon is applied to soil, soil heavy metal ions can be adsorbed in situ, the mobility and the effectiveness of the heavy metal ions in the soil are reduced, and the content of the heavy metal in plants is reduced. However, biomass carbon processed from straw is individual small particles, and if the biomass carbon small particles are directly buried in soil, although the biomass carbon small particles can adsorb heavy metals in the soil, the biomass carbon small particles are difficult to be taken out from the soil for recycling. This results in the carbon particles of the biomass becoming buried in the soilAfter a long time, the unrecoverable biomass carbon particles can be disintegrated into fine powder, then the powder can be phagocytized, digested and excreted by organisms such as earthworms in soil, and heavy metal ions adsorbed by the biomass carbon are excreted into the soil in the process, so that new pollution is formed. Because the organisms in the soil can move, the phagocytosed biomass carbon particles containing heavy metals can carry the heavy metals to move around, and the area of the heavy metal polluted soil is further enlarged. Moreover, although the porosity of the biomass carbon is relatively high, microorganisms and fine particle impurities in the soil can easily enter the pores of the biomass carbon, so that the pores of the biomass carbon are blocked, and the adsorption capacity of the biomass carbon on heavy metal ions is seriously reduced.
The utility model has the following contents:
an object of the utility model is to provide a can adsorb soil heavy metal ion's straw fiber bundle, with the problem of proposing in solving above-mentioned background, this straw fiber bundle has certain flexibility, can various shapes spiral in soil, reach the multiple adsorption effect to soil heavy metal ion, take out from soil easily after this straw fiber bundle adsorbs heavy metal ion simultaneously, adsorbed heavy metal can not release soil once more, this straw fiber bundle can filter the jam of impurity to the biomass carbon hole in the soil, maintain biomass carbon to the long-term efficient adsorption of heavy metal ion.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a straw fiber bundle that can adsorb soil heavy metal ion, includes a cylindric geotechnological cloth heavy metal adsorption wrapping bag (1), and its characterized in that, what load in the geotechnological cloth heavy metal adsorption wrapping bag is straw living beings carbon particle (11), and there is one deck filter layer (12) that contain the lignin adhesive on the surface of straw living beings carbon particle, and geotechnological cloth heavy metal adsorption wrapping bag surface is by the inseparable winding of twist form straw fiber bundle (2).
The geotextile heavy metal adsorption packaging bag (1) is 1-30 m in length.
The size of the straw biomass carbon particles (11) is 300-50 meshes.
The thickness of the filter layer (12) containing the lignin adhesive is 0.2-1.0 cm.
The diameter of the twist-shaped straw fiber bundle (2) is 1.0-3.0 cm.
Compared with the prior art, the beneficial effects of the utility model are that: the straw fiber bundle capable of adsorbing heavy metal ions in soil comprises a geotextile heavy metal adsorption packaging bag (1), wherein the geotextile is also called geotextile, and is a water-permeable geosynthetic material prepared from plastic fibers such as terylene and the like through a needling or weaving process, and the geotextile can resist corrosion for a long time and resist microbial corrosion in soil and water with different pH values. Gaps are formed among the fibers of the geotextile, so that the geotextile has good water seepage performance and can filter out small particle impurities such as silt, small stones and the like in soil to a certain extent. The utility model discloses a geotechnological cloth heavy metal adsorption packaging bag can prevent to a certain extent that these impurities from blockking up the hole of straw living beings carbon granule that geotechnological cloth heavy metal adsorption packaging bag splendid attire with impurity separation such as microorganism, moss and green alga in the soil outside geotechnological cloth packaging bag.
In the straw fiber bundle capable of adsorbing heavy metal ions in soil, straw biomass carbon particles (11) are contained in the geotextile heavy metal adsorption packaging bag, and the straw biomass carbon is a solid substance which is carbon-containing, stable and highly aromatic and is obtained by thermally cracking straws under the anoxic or anaerobic condition. The straw biomass carbon has large porosity and specific surface area, has a highly aromatic structure, contains carboxyl, phenolic hydroxyl, carbonyl, anhydride and other groups, and has good heavy metal ion adsorption characteristics due to the structural characteristics. The straw biomass carbon has attracted wide attention as a novel environment functional material, and has great application potential in the aspects of agricultural soil improvement, crop yield increase, polluted soil remediation and the like.
In the straw fiber bundle capable of adsorbing heavy metal ions in soil, a filter layer (12) containing lignin adhesive is arranged on the surface of a straw biomass carbon particle, the lignin adhesive is an adhesive prepared by taking lignin as a raw material, the lignin is a macromolecular compound formed by connecting a plurality of phenolic hydroxyl groups through chemical bonds, active vacancies capable of participating in reaction are further arranged on the ortho-position and the para-position of the benzene ring hydroxyl groups of the lignin, and the lignin adhesive can be further crosslinked with other compounds, and is lignin-phenolic resin adhesive. The lignin adhesive can be wrapped on the surface of the straw biomass carbon particles by utilizing the viscosity of the lignin adhesive, a film is formed after air drying, a three-dimensional polymer network with compact lignin in the film can filter out microorganisms and small particle impurities, the impurities are prevented from entering pores of the straw biomass carbon particles, and the adsorption effect of the straw biomass carbon particles on soil heavy metal ions is exerted to the maximum extent.
In the straw fiber bundle capable of adsorbing heavy metal ions in soil, the outer surface of the geotextile heavy metal adsorption packaging bag is tightly wound by the twisted straw fiber bundle (2). The twisted straw fiber bundle is formed by twisting a plurality of straw fibers through a straw rope weaving machine, the straw fibers which are different in length and are arranged in parallel can be twisted together in a mutual entanglement mode by twisting the straw fibers into a twisted shape, and the straw fibers in the twisted straw fiber bundle are not easy to loosen and fall off from the twisted straw fiber bundle. The twist-shaped straw fiber bundle has better mechanical strength and is not easy to damage and break, and the twist-shaped straw fiber bundle is wound on the outer surface of the geotextile heavy metal adsorption packaging bag and can compensate the mechanical strength of the geotextile heavy metal adsorption packaging bag. Because the soil has more sharp objects such as stones and branches, the geotextile bag is easily punctured or scratched, so that straw biomass carbon particles contained in the geotextile bag scatter everywhere and are difficult to recover. And twist form straw fiber bundle closely twines on geotechnological cloth heavy metal adsorption packaging bag surface, with the help of twist form straw fiber bundle's wearability, can effectively prevent the utility model relates to a straw fiber bundle that can adsorb soil heavy metal ion is being buried underground and is pulling out soil in-process geotechnological sack and be lacerated by the debris in soil. In addition, the stalk fibers are tightly bound and tightly wound on the surface of the geotextile heavy metal adsorption packaging bag, and the effect of filtering small particle impurities such as silt, small stones and the like in soil is also achieved.
The utility model relates to a straw fiber bundle that can adsorb soil heavy metal ion has good durability, recoverability and reuse nature in the use of farmland. The utility model is in a long rope shape, has the characteristics of bending and circling, holds one end of the straw fiber bundle and easily circles and takes out the straw fiber bundle which can adsorb heavy metal ions in soil through traction and dragging; the utility model relates to a can adsorb soil heavy metal ion's straw fiber bundle can do the convolution near the root of crops, wraps up around the crops root, helps reducing the absorption of crops to heavy metal ion.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic view of the overall structure of a straw fiber bundle capable of adsorbing heavy metal ions in soil.
FIG. 2 is a schematic view of a cross-sectional structure of a straw fiber bundle capable of adsorbing heavy metal ions in soil.
FIG. 3 is a schematic structural diagram of straw biomass carbon particles.
Reference numbers in the figures: the soil engineering cloth heavy metal adsorption packaging bag comprises a soil engineering cloth heavy metal adsorption packaging bag (1), straw biomass carbon particles (11), a filter layer (12) containing lignin adhesive, and a twist-shaped straw fiber bundle (2).
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the scope of the present invention.
Example 1
Referring to the attached drawing, the straw fiber bundle capable of adsorbing heavy metal ions in soil comprises a cylindrical geotextile heavy metal adsorption packaging bag (1), and is characterized in that straw biomass carbon particles (11) are loaded in the geotextile heavy metal adsorption packaging bag, a filter layer (12) containing a lignin adhesive is arranged on the surface of the straw biomass carbon particles, and the outer surface of the geotextile heavy metal adsorption packaging bag is tightly wound by a twist-shaped straw fiber bundle (2). The geotextile heavy metal adsorption packaging bag (1) is 1m long. The size of the straw biomass carbon particles (11) is 300 meshes. The thickness of the filter layer (12) containing the lignin binder is 0.2 cm. The diameter of the twisted straw fiber bundle is 1.0 cm.
Example 2
Referring to the attached drawing, the straw fiber bundle capable of adsorbing heavy metal ions in soil comprises a cylindrical geotextile heavy metal adsorption packaging bag (1), and is characterized in that straw biomass carbon particles (11) are loaded in the geotextile heavy metal adsorption packaging bag, a filter layer (12) containing a lignin adhesive is arranged on the surface of the straw biomass carbon particles, and the outer surface of the geotextile heavy metal adsorption packaging bag is tightly wound by a twist-shaped straw fiber bundle (2). The geotextile heavy metal adsorption packaging bag (1) is 10m in length. The size of the straw biomass carbon particles (11) is 210 meshes. The thickness of the filter layer (12) containing the lignin binder is 0.5 cm. The diameter of the twisted straw fiber bundle is 1.7 cm.
Example 3
Referring to the attached drawing, the straw fiber bundle capable of adsorbing heavy metal ions in soil comprises a cylindrical geotextile heavy metal adsorption packaging bag (1), and is characterized in that straw biomass carbon particles (11) are loaded in the geotextile heavy metal adsorption packaging bag, a filter layer (12) containing a lignin adhesive is arranged on the surface of the straw biomass carbon particles, and the outer surface of the geotextile heavy metal adsorption packaging bag is tightly wound by a twist-shaped straw fiber bundle (2). The geotextile heavy metal adsorption packaging bag (1) is 20m in length. The size of the straw biomass carbon particles (11) is 130 meshes. The thickness of the filter layer (12) containing the lignin binder is 0.8 cm. The diameter of the twisted straw fiber bundle is 2.4 cm.
Example 4
Referring to the attached drawing, the straw fiber bundle capable of adsorbing heavy metal ions in soil comprises a cylindrical geotextile heavy metal adsorption packaging bag (1), and is characterized in that straw biomass carbon particles (11) are loaded in the geotextile heavy metal adsorption packaging bag, a filter layer (12) containing a lignin adhesive is arranged on the surface of the straw biomass carbon particles, and the outer surface of the geotextile heavy metal adsorption packaging bag is tightly wound by a twist-shaped straw fiber bundle (2). The geotextile heavy metal adsorption packaging bag (1) is 30m in length. The size of the straw biomass carbon particles (11) is 50 meshes. The thickness of the filter layer (12) containing the lignin binder is 1.0 cm. The diameter of the twisted straw fiber bundle is 3.0 cm.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides a straw fiber bundle that can adsorb soil heavy metal ion, includes a cylindric geotechnological cloth heavy metal adsorption wrapping bag (1), and its characterized in that, what load in the geotechnological cloth heavy metal adsorption wrapping bag is straw living beings carbon particle (11), and there is one deck filter layer (12) that contain the lignin adhesive on the surface of straw living beings carbon particle, and geotechnological cloth heavy metal adsorption wrapping bag surface is by the inseparable winding of twist form straw fiber bundle (2).
2. The straw fiber bundle capable of adsorbing soil heavy metal ions according to claim 1, wherein the geotextile heavy metal adsorption packaging bag (1) is 1-30 m long.
3. The straw fiber bundle capable of adsorbing soil heavy metal ions according to claim 1, wherein the size of the straw biomass carbon particles (11) is 300-50 meshes.
4. The straw fiber bundle capable of adsorbing soil heavy metal ions according to claim 1, wherein the thickness of the filter layer (12) containing the lignin binder is 0.2-1.0 cm.
5. The straw fiber bundle capable of adsorbing soil heavy metal ions according to claim 1, wherein the diameter of the twisted straw fiber bundle (2) is 1.0-3.0 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021351266.8U CN212652389U (en) | 2020-07-10 | 2020-07-10 | Straw fiber bundle capable of adsorbing soil heavy metal ions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021351266.8U CN212652389U (en) | 2020-07-10 | 2020-07-10 | Straw fiber bundle capable of adsorbing soil heavy metal ions |
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| Publication Number | Publication Date |
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| CN212652389U true CN212652389U (en) | 2021-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021351266.8U Expired - Fee Related CN212652389U (en) | 2020-07-10 | 2020-07-10 | Straw fiber bundle capable of adsorbing soil heavy metal ions |
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| CN (1) | CN212652389U (en) |
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2020
- 2020-07-10 CN CN202021351266.8U patent/CN212652389U/en not_active Expired - Fee Related
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