JP7005067B2 - Pollution control method using activated carbon - Google Patents

Description

The present invention relates to a non-biological pollution control method for decontaminating pollutants in soil by a redox reaction induced by adjacent metallic iron particles after efficient aggregation by activated carbon particles.

The conventional decontamination technique using metallic iron and activated charcoal is limited to decontamination of halogenated organic pollutants by a reductive dehalogenation reaction by adding a composite particle preparation in which metallic iron is carried on activated charcoal particles to contaminated soil. It was a pollution purification measure method to be implemented.

As an advantage of using the composite particle preparation for purification work, the contaminants adsorbed on the activated carbon part of the composite particle are immediately dechlorinated by the metallic iron in the particle, which is highly reliable only by the composite particle. Decontamination machine work can be mentioned.

The judgment here that "the certainty is high unique to composite particles" is that when the metallic iron and the activated carbon are applied to the contamination as individual particles, they are dispersed with the activated carbon particles to which the contamination is adsorbed. It is a judgment based on the assumption that it is unlikely that the efficiency of the association of metallic iron particles of different particles to decompose the contamination exceeds the efficiency of the composite particles.

By the way, there are a wide variety of technologies for producing composite particles by integrating metallic iron and activated carbon. Among them, the technology for producing composite particles made from metallic iron particles and carbon particles using a ball (bead) mill was used in the last century. It has a long history that originated from the mechanical alloying technology and the technology for producing functional activated carbon, which is an impregnated activated carbon.

In addition, composite particle manufacturing technology using ball (bead) mills is roughly divided into dry type and wet type, but the action and mechanism of each manufacturing method is basically grinding by contact between balls (beads). Since it is a simple repetitive work of crimping and crimping, it has an advantage that the scale-up of the manufacturing scale can be easily performed.

USA, EPA, Remedial Technology Fact Sheet-Activated Carbon-Based Technology for In Situ Remediation (2018) J. Gao, W. Wang, A. J. Rondonone, F.M. He and L. Y. Liang, Degradation of trichlorethylene with with a novel ball milled FeC nanocomposite, J. Mol. Hazard. Mater. , 2015,300,443-450, Tomoyuki Imai, 4 outsiders, "Preparation of nano-iron powder / activated carbon composite material and basic examination of its TCE reaction characteristics", 26th Workshop on Groundwater / Soil Contamination and its Prevention Measures, Soil Environment Center, June 3rd year of Reiwa, p. 241-244

There are a wide variety of pollutants, and the adsorptivity of pollutants to activated carbon and the reactivity with metallic iron also show different behaviors depending on the pollutants.
In addition, the reactivity with metallic iron is easily affected by environmental factors such as the contamination adsorption capacity and oxidation-reduction potential of contaminated soil, and even if the soil contamination concentration is the same, the metallic iron required for purification is required for each target soil. The amount and the amount of activated charcoal and their ratio are different.

However, as shown in Non-Patent Documents 1 to 3, the amount ratio of metallic iron to activated carbon contained in the composite particle preparation in which metallic iron is supported on activated carbon particles is substantially fixed for each production lot. If the optimum quantity ratio conditions for each of the contaminated cases are strictly set, the composite particle formulation produced with the uniform volume ratio specifications is not always a convenient material.

For example, on the premise of a plan to pull up from the site immediately after construction, the elution concentration of the target soil contamination is achieved to the environmental standard value immediately after construction, considering the adsorption capacity of the activated carbon contained in the formulation as the application design of the composite particle formulation. If it is set to be used, the largest number of composite particle formulations among various designs will be used in such construction.
As a result, there is a problem that an excessive amount of metallic iron component applied far exceeding the required decomposition capacity (total amount of pollution decomposition) is wasted, resulting in low cost-effective and high-cost purification.

On the contrary, the application design of the composite particle formulation in which metallic iron is supported on the activated carbon particles is adjusted according to the local contamination concentration, taking into consideration the contamination decomposition capacity due to the reduction reaction of the metallic iron contained in the formulation. If determined, this method is often the design with the lowest formulation cost.
However, in the construction with such a design, a slow reduction reaction continues for about two months until the end point of purification, and the pollution concentration gradually decreases toward the environmental standard value. As a result, there were still cases where the environmental standard was not achieved until a considerable period of time had passed since the construction, and the construction completion time was extremely unclear, and there was a problem that the construction period would be long if it moved.

In this way, in the construction using the conventional composite particle preparation, the contaminants adsorbed on the activated charcoal site of the composite particles are immediately dechlorinated by the metallic iron component in the composite particles, and purification with high reliability is possible. It has a selling point that it is easy to explain that it will be achieved, and the production of composite particles using a ball (bead) mill is generally easy to scale up, and it is a technology that is rich in advantages on the sales and manufacturing side of formulations. Met.
On the other hand, since the amount ratio of metallic iron and activated charcoal in the composite particle preparation is fixed, various construction risks such as prolonging the construction period and increasing the cost of construction may be caused in the on-site construction. It is a technology that is rich in problems on the construction side, and the conventional decontamination machine operation using composite particles is limited to the reductive dehalogenation reaction, which has a slow reaction rate. It had problems with its narrow applicability and its reaction rate, which were almost limited to halogenated organic contaminants.

The gist of the present invention for solving the above-mentioned problems lies in the following invention.
The activated carbon particles are used to reduce the elution concentration of the contamination from the contaminated soil, and at least one of the non-halogenated contamination and the halogenated contamination among the contaminants adsorbed on the activated carbon particles is treated. It is a method of decontaminating by the action of metallic iron particles containing reduced iron as a main component adjacent to activated carbon particles, aiming at both oxidation in the coexistence of an oxygen compound and reduction after the disappearance of the oxygen compound. Rather than applying the composite particle preparation consisting of the metallic iron component and the activated charcoal component to the contaminated soil alone, at least the preparation in which the activated charcoal particles and the metallic iron particles are mixed is subjected to weakly acidic to alkaline conditions exceeding pH 3. A non-biological pollution control method using activated charcoal, which is applied to a certain contaminated soil and promotes decontamination by promoting aggregation in which the activated charcoal particles and the metallic iron particles adhere to each other .

Under the predetermined pH conditions according to the present invention, the metallic iron component and the activated charcoal component are added to the contaminated soil as a formulation in which at least each component particle is mixed, instead of a single agent composite particle formulation, and the metallic iron is added to the activated charcoal particles. By adjoining the particles, it has the same purification function as the composite particles, and it is possible to adopt any amount of metallic iron and activated charcoal according to the pollution situation and construction situation, and the amount of metallic iron and activated charcoal. Purification work with a higher degree of freedom, lower cost, and less construction risk factors can be achieved than decontamination using composite particles with a fixed ratio.
In addition, by regularly using oxygen compounds for such construction, purification is remarkably performed by adding an oxidation reaction to the pre-stage of the slow reduction reaction, which was a uniform action mechanism in the conventional method using composite particles. Along with the achievement of high-speed purification work, the number of applicable pollutants by the conventional method, which was only halogenated pollution, has been dramatically expanded to cover all non-halogenated pollutants. The cleansing work that has been done is achieved.

It is a figure which shows the pH dependence of the phenomenon that metallic iron particles and activated carbon particles adhere to each other in water and aggregate and coprecipitate. It is a figure which shows the result of having performed the comparison with the composite particle method which is a conventional method about the resolution of the pollutant using the preparation which mixed the metallic iron particle and the activated carbon particle in the coexistence of an oxygen compound which is the present invention.

Hereinafter, embodiments representative of the present invention will be described based on the development process.

As one of the triggers for the idea of the present invention, after preparing a black suspension containing metal iron particles and activated charcoal particles at a high concentration and leaving it for a certain period of time, depending on the combination of the metallic iron particles and the activated charcoal particles, it may be suspended. It was found that there were cases where the turbid liquid separated into a clear supernatant and a black precipitate.

This result reminds us of the property that a certain combination of metallic iron particles and activated charcoal particles aggregate and co-deposit with each other, and depending on the conditions, a composite particle composed of metallic iron and activated charcoal can be produced at a high cost and time. It is suggested that it is possible to easily form agglomerates of both particles in the field without purchasing, and to have a purification function equivalent to that of composite particles.

Subsequent detailed examination revealed that this aggregation / coprecipitation phenomenon has the property that the metallic iron particles and the activated charcoal particles adhere to each other in water under weakly acidic to alkaline conditions exceeding pH3, and pH3. It was found that the coprecipitation phenomenon was strongly inhibited in the following strongly acidic regions, and new findings regarding pH application conditions related to this phenomenon were obtained. The results are shown in FIG.

In the test obtained in FIG. 1, a black suspension containing a certain amount of metallic iron particles was aerated with high-purity nitrogen gas using an aqueous solution adjusted to pH 2 to 12 with dilute hydrochloric acid or dilute sodium hydroxide solution. The mixture was prepared with stirring, and after preparation, a sample was taken from the water surface of the suspension and the optical turbidity of OD ₇₅₀ was measured, and this value was set to C ₀ .
After measuring the optical turbidity, a certain amount of activated charcoal particles were added, and the mixture was again aerated and stirred using high-purity nitrogen gas. After centrifugation, a sample was taken from the suspension and the optical turbidity was measured again, which was designated as C ₁ .
At this time, as a control group, the optical turbidity of the supernatant after centrifugation of the suspension to which only activated carbon particles were added was also measured under each pH condition and used for background correction for C ₁ . , Correction value: C ₂ was obtained.
In addition, three tests were carried out in each system for the evaluation at each pH.

FIG. 1 is a plot of the ratio of turbidity changes before and after centrifugation (C ₂ / C ₀ ) under each pH condition.
As a result, the ratio of turbidity change showed a value close to 0 in the section of pH 5 to 12, while a change was observed from 0 to 1 in the section of pH 3 to 4, and pH 2 Then, a value close to 1 was shown.
From the above, the combination of metallic iron particles and activated carbon particles used in this experiment has the property of adhering to each other and agglomerating / coprecipitating in an aqueous phase under weakly acidic to alkaline conditions that generally exceeds pH 3. Was clearly shown.

Another idea that triggered the present invention is that in the process of examining the oxidation treatment conditions for tetraalkyl lead, a suspension containing metallic iron particles and activated carbon particles is placed in a vial, and the gas phase is changed to air or. When the change in the concentration of tetraalkyl lead in the vial gas phase was observed over time by substituting with nitrogen, no change was observed in the concentration of tetraalkyl lead in the system in which the gas phase was nitrogen, but with air. It is based on the fact that a remarkable decrease was observed in the tetraalkyl lead concentration of the system.
As a result of further studies, this decrease becomes more remarkable as the oxygen concentration in the gas phase is higher, or when an oxidizing reagent such as hydrogen peroxide is added, and the decrease in such concentration is due to the addition of mannitol to the suspension. It was considered that the interaction between these oxygen compounds and metallic iron particles caused an oxidation reaction by hydroxy radicals having a high redox potential.

As a result of further studies, the oxidation reaction stops when the oxygen compound is exhausted by the reaction with the metallic iron particles, and thereafter, when the metallic iron particles remain, the reduction reaction becomes the main component and reduction. It was confirmed that decontamination by target dehalogenation reaction etc. progressed.

Further, in order to confirm the effect of imparting an oxidation reaction according to the present invention, a composite particle method which is a conventional method regarding the resolution of trichloroethylene using a preparation in which metallic iron particles and activated carbon particles coexist in the coexistence of an oxygen compound is used. Comparison with was carried out.
The experimental conditions are based on the test method obtained in FIG. 5 described in Non-Patent Document 3, and when the oxygen compound according to the present invention is added, the end point pH after both the oxidation and reduction reactions is changed from 6. Sodium persulfate was added to the system so that it converged to the range of 8.

The results are shown in FIG. Regarding the time course of the composite particle method, which is the conventional method in FIG. 2, the time change of the iron particles alone, and the time change of the activated carbon alone, the values are quoted from the graph of FIG. 5 described in Non-Patent Document 3. Plotted in FIG.
In the graph of FIG. 2, the experimental group of the present invention corresponds to an experimental group of pH 7 using a preparation in which metallic iron particles and activated carbon particles coexist in the coexistence of an oxygen compound, and an oxygen compound is used as a control test. An experimental group of pH 2 was set up using a compound in which metallic iron particles and activated carbon particles coexisted.
What can be clearly read from the graph of FIG. 2 is that the experimental group having a pH of 7 using the preparation in which the metallic iron particles and the activated carbon particles coexist in the coexistence of the oxygen compound in the present invention is the initial group among all the experimental groups. The decomposition reaction of iron was the fastest, and it was the only one that reached the limit concentration of 0.001 mg / L or less.
In addition, the pH 2 experimental group using a preparation in which metallic iron particles and activated carbon particles coexist in the coexistence of an oxygen compound placed as a control group also performed better decomposition than the experimental group using the composite particle method, which is a conventional method. From the above, it was clarified that the oxidation reaction in the coexistence of the oxygen compound according to the present invention contributes to the purification of trichloroethylene extremely effectively.
The difference in decomposition efficiency between the pH2 experimental group and the pH7 experimental group when a preparation containing a mixture of metallic iron particles and activated charcoal particles is shown is the aggregation / co-precipitation of the metallic iron particles and the activated charcoal particles as shown in FIG. It was considered that the difference was due to the presence or absence of the phenomenon.

In this way, by adding at least a preparation containing a mixture of activated carbon particles and metallic iron particles and an oxygen compound to the contaminated soil and setting the oxidation conditions, we aim to purify the contamination that surpasses the reduction method using the conventional composite particles. Furthermore, it has been clarified that extremely efficient pollution purification can be achieved at a higher purification rate by setting predetermined pH conditions and adjoining activated carbon particles and metallic iron particles.

Specific examples of the oxygen compound according to the embodiment include molecular oxygen, ozone, persulfate, calcium peroxide, magnesium peroxide, hydrogen peroxide and the like. Needless to say, any drug or material containing an oxygen compound that contributes to pollution purification is effective as the oxygen compound used in the present invention.

In addition, in the non-biological pollution control method using activated charcoal, which is the present invention, as a pollutant that can be purified, the soil pollution control method and the hydrocarbon method (the emission amount of a specific chemical substance into the environment) In addition to the chemical substances specified in the Act on Promotion of Understanding, etc. and Improvement of Management) and related laws, hydrocarbon components such as petroleum-based fuels and aromatic hydrocarbon compounds are listed.

The present invention promotes chemical treatment of pollutants by oxidation reaction or reduction reaction, and has an adsorption treatment function by adsorption of activated carbon. By combining these various treatment methods, the following purification and countermeasures are mainly achieved.
(A) Treatment of halogenated organic contamination mainly by reductive dechlorination after adsorption of activated carbon (b) Treatment of non-halogenated organic contamination mainly by oxidation after adsorption of activated carbon (c) Main treatment of oxidation of organic metals, etc. Adsorption treatment with activated carbon after mineralization (d) Adsorption treatment with activated carbon after treatment mainly for oxidation or reduction of heavy metals (e) Treatment of complex contamination by the above combination -Depending on the situation, the required oxidation reaction time and reduction reaction time can be set by freely adjusting the oxygen compound concentration and the metal iron particle concentration, and the elution concentration from the soil can be determined by using the adsorption capacity of activated carbon. Implement pollution control measures that reduce construction risks to a level below the standard.

The most suitable construction method for the present invention is a construction method using a columnar improving machine. The columnar improvement machine is composed of a stirring and mixing blade having a drug injection part and a long-axis rod having a drug supply tube function, and can be a single-screw type / multi-screw type or a slurry agent supply type / dry agent supply type. Regardless, it is a soil improvement machine used for the purpose of mixing chemicals with soil with high accuracy and precision. In addition, the construction range of this machine is a long column-like structure in which the rotation range of the stirring and mixing blade is the construction area and the long axis rod length is the maximum construction depth. Therefore, the air contact surface is extremely small compared to the amount of construction soil, and the volatile contaminated compounds contained in the contaminated soil are minimally scattered in the air.
On the other hand, other construction methods include backhoe mixing, mixing using an on-site soil mixing improver, injection into soil via the grout injection method, and injection into soil via the double packer method. However, the contaminated soil is kept under weakly acidic to alkaline conditions exceeding pH 3, and a mixture of metallic iron particles and activated charcoal particles is added to the contaminated soil, and oxidation in the coexistence of the oxygen compound and reduction after the disappearance of the oxygen compound are carried out. Any method that can be decontaminated by both reactions of chemical conversion is effective as the construction method of the present invention.
Further, it is needless to say that the construction target of the present invention includes contaminated groundwater because the contaminated groundwater is also purified at the same time as the purification of the contaminated soil by carrying out such construction on the aquifer.

The following invention concept is derived from the embodiments and examples described above.
(1) While reducing the elution concentration of contamination from contaminated soil by using activated carbon particles, at least one of non-halogenated contamination and halogenated contamination among the contaminants adsorbed on the activated carbon particles is contaminated. Is decontaminated by the action of metallic iron particles containing reduced iron as a main component, which are adjacent to the activated carbon particles, to achieve both oxidation in the coexistence of an oxygen compound and reduction after the disappearance of the oxygen compound. Therefore, instead of applying a composite particle preparation composed of a metallic iron component and an activated charcoal component to contaminated soil alone, a preparation in which at least each component particle is mixed is contaminated under weakly acidic to alkaline conditions exceeding pH 3. It is a non-biological pollution control method using activated charcoal, which is characterized by being applied to soil.

(2) The above-mentioned (1), wherein the oxygen compound contains at least one of molecular oxygen, ozone, persulfate, calcium peroxide, magnesium peroxide and hydrogen peroxide. It is a non-biological pollution control method using activated carbon.

(3) The activated carbon according to (1) or (2) above, which comprises a composite particle composed of metallic iron and activated carbon as a part of the preparation in which at least each of the component particles is mixed. This is the non-biological pollution control method used.

(4) The application rate ratio of the metallic iron particles to the oxygen compound so that the pH after both the oxidation in the coexistence of the oxygen compound and the reduction after the disappearance of the oxygen compound is in the range of 6 to 8. Is a non-biological pollution control method using the activated carbon according to any one of (1) to (3) above, wherein the above-mentioned (1) to (3) is determined.

(5) The non-biological pollution control method using activated carbon according to any one of (1) to (4) above, wherein the application is carried out by a columnar improving machine.

(6) The non-biological pollution control method using activated carbon according to any one of (1) to (5) above, wherein the preparation is applied to contaminated soil as a powder. ..

(7) The non-biological pollution control method using activated carbon according to any one of (1) to (6) above, wherein the pollution is alkyl lead.

Next, the action and effect of the above-mentioned invention concept will be described.
According to the non-biological pollution control method using activated charcoal according to (1) of the present disclosure, metallic iron particles and activated charcoal particles containing reduced iron as a main component under weakly acidic to alkaline conditions exceeding pH 3. By mixing the two particles in water, both particles adhere to each other in the aqueous solution, so it is cheaper and more effective than purchasing or purchasing composite particles of both particles at a cost and time. , Can be easily created in the field.

In addition, by coexisting an oxygen compound together with the metallic iron particles and activated charcoal particles, the conventional technology can be used for non-halide contamination before the purification method limited to the reductive dechlorination reaction for halide contamination. On the other hand, it is possible to introduce an oxidation treatment that is effective and has a high reaction rate, and it is possible to dramatically expand the applicable pollutants and significantly speed up the decomposition.

Furthermore, since the amount ratio of the metallic iron particles to the activated carbon particles can be set arbitrarily by oneself, the concentration of the activated carbon particles to be added can be set to such that the elution concentration of the contamination is below the purification target. It is possible to leave the site only by the initial construction of mixing materials into contaminated soil without waiting for the end point of the reduction reaction, etc., whose outlook is unclear, and it is possible to carry out purification construction with good planning.

According to the non-biological pollution control method using activated carbon according to (2) of the present disclosure, the type and coexistence concentration of the oxygen compound and the concentration of metallic iron particles containing reduced iron as a main component can be freely adjusted. As a result, the ratio of oxidation treatment and reduction treatment can be freely adjusted, so treatment and countermeasures can be implemented according to the contaminated species and concentration.

For example, when only a very small amount of molecular oxygen generated by the entrainment of air or ground air due to mixing / injection construction is used as the only oxygen compound, the oxidation reaction is led by a reaction mainly consisting of an extremely short reduction reaction. can do.
On the contrary, when ozone, persulfate, calcium peroxide, magnesium peroxide, hydrogen peroxide, etc. are added in excess of the amount of metallic iron particles, a large amount of radical species having strong oxidizing power is produced. It is possible to induce a reaction mainly composed of an oxidation reaction.
In this way, the period and intensity at which the oxidation reaction in the previous stage of the reduction reaction continues can be freely set according to the contaminated species at the site and the situation thereof.

According to the non-biological pollution control method using activated charcoal according to (3) of the present disclosure, it is composed of a metallic iron component and an activated charcoal component as a part of a preparation in which at least each component particle is mixed. When using composite particles, if the ideal amount ratio of metallic iron particles and activated charcoal particles cannot be achieved with the composite particles alone, the insufficient metallic iron component or activated charcoal component is added to the composite particles as each particle to contaminate the composite particles. By applying it to the soil and correcting the conventional technique, the construction advantage of the non-biological pollution control method using activated carbon according to the above-mentioned (1) and (2) can be obtained. It can also be shared in construction based on composite particles.

According to the non-biological pollution control method using activated carbon according to (4) of the present disclosure, the reaction is set so that the reaction is terminated when the pH after both the oxidation and reduction reactions is around 6 to 8 neutral. By doing so, it is possible to carry out construction with less influence on soil pH and less environmental risk such as elution of heavy metals.

According to the non-biological contamination control method using activated charcoal according to (5) of the present disclosure, by carrying out the construction using the columnar improving machine, highly accurate preparations can be kneaded into the contaminated soil. It is possible to carry out construction that minimizes the scattering of volatile contaminated compounds into the construction environment.

According to the non-biological pollution control method using activated charcoal according to (6) of the present disclosure, if a large amount of the conventional slurry-like preparation is used, the soil becomes muddy during construction. That is, there was a limit to the amount of the active ingredient of the pharmaceutical product added to the contaminated soil, but by changing the pharmaceutical product to powder and applying it to the contaminated soil, the active ingredient per unit soil can be applied without causing mud. Since the dose can be increased to each stage, high-concentration contamination can be applied to the construction method according to the present invention.

According to the non-biological pollution control method using activated carbon according to (7) of the present disclosure, as a new purification measure for alkyl lead, which is extremely toxic and an effective purification measure has not yet been proposed. You can make market proposals.

Although embodiments and examples of the present invention have been described above, the specific configuration is not limited to the above-mentioned disclosure, and the present invention may be changed or added without departing from the gist of the present invention. Needless to say, it is included in.

In the pollution control method according to the present invention, the elution concentration of soil contamination is reduced by the activated carbon particles, and the contamination adsorbed on the activated carbon particles is oxidized in the coexistence of oxygen compounds by the action of the metal iron particles adjacent to each other. It is a method of decontaminating by aiming at both reactions of reduction after the disappearance of the oxygen compound, minimizing the risk of purification work, and providing efficient pollution purification and countermeasures that can deal with various polluted species, soil groundwater contamination. Can be provided to the countermeasure market.

Claims (7)

The activated carbon particles are used to reduce the elution concentration of the contamination from the contaminated soil, and at least one of the non-halogenated contamination and the halogenated contamination among the contaminants adsorbed on the activated carbon particles is treated. It is a method of decontaminating by the action of metallic iron particles containing reduced iron as a main component adjacent to activated carbon particles, aiming at both oxidation in the coexistence of an oxygen compound and reduction after the disappearance of the oxygen compound. Rather than applying the composite particle preparation consisting of the metallic iron component and the activated charcoal component to the contaminated soil alone, at least the preparation in which the activated charcoal particles and the metallic iron particles are mixed is subjected to weakly acidic to alkaline conditions exceeding pH 3. A non-biological pollution control method using activated charcoal, which is applied to a certain contaminated soil and promotes decontamination by promoting aggregation in which the activated charcoal particles and the metallic iron particles adhere to each other . The activated charcoal according to claim 1, wherein the oxygen compound contains at least one of molecular oxygen, ozone, persulfate, calcium peroxide, magnesium peroxide, and hydrogen peroxide. Non-biological pollution control method. The activated carbon according to any one of claims 1 or 2, wherein the composite particles composed of metallic iron and activated carbon are contained as a part of the preparation in which at least each of the component particles is mixed is used. There was a non-biological pollution control method. The application rate ratio of the metallic iron particles to the oxygen compound is determined so that the pH after both the oxidation in the coexistence of the oxygen compound and the reduction after the disappearance of the oxygen compound is in the range of 6 to 8. The non-biological pollution control method using the activated carbon according to any one of claims 1 to 3, wherein the method is characterized by the above. The non-biological pollution control method using activated carbon according to any one of claims 1 to 4, wherein the application is carried out by a columnar improving machine. The non-biological pollution control method using activated carbon according to any one of claims 1 to 5, wherein the preparation is applied to contaminated soil as a powder. The non-biological pollution control method using activated carbon according to any one of claims 1 to 6, wherein the pollution is alkyl lead.

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