JP3302610B2 - Adsorbent, adsorbent for organic solvent, and method for producing adsorbent for organic solvent - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates to an adsorbent, an adsorbent for an organic solvent, and a method for producing an adsorbent for an organic solvent, and more particularly to an adsorbent excellent in adsorbing an organic solvent, an adsorbent for an organic solvent, and an adsorbent for an organic solvent. And a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, when water and an organic solvent (a liquid organic compound capable of dissolving a solid, gas, or liquid such as methanol and benzene) coexist, from the viewpoint of preventing environmental pollution, It is desired to efficiently adsorb an organic solvent.

[0003]

However, when water and an organic solvent coexist, there is a problem that water is not adsorbed so much by simple means and the organic solvent cannot be adsorbed efficiently.

An object of the present invention is to provide an adsorbent, an adsorbent for an organic solvent, and a method for producing an adsorbent for an organic solvent related to the adsorbent, which can eliminate the above-mentioned problems by simple means.

[0005]

In order to achieve the above object, an adsorbent of the present invention comprises a paper containing a crushed sizing agent,
Ri Na and paper to each other in the ground sizing agent containing bound with a binding material, paper sizing agents containing that said grinding is printed subjected
Waste paper .

[0006] The adsorbent according to the second aspect is the first aspect.
In the adsorbent described, the paper containing the crushed size is
A fiber length of about 0.03cm~5cm Sadea is, binder
Is, Ru polyester fiber der of the core-sheath type.

[0007]

[0008]

[0009]

[0010]

An embodiment of the present invention will be described below. Example 1 As shown in FIG. 1, as a paper containing a sizing agent, for example, the mixing ratio of a crushed cardboard waste paper and a crushed cedar bark was changed. As a binder, for example, 10 parts of a core-sheath type polyester fiber (fiber length: 1 cm, fiber diameter: 3 denier, sheath material melting temperature: 110 ° C., core material melting temperature: 225 ° C.) is added and mixed well. did.

The degree of crushing of the paper containing the sizing agent is as follows.
For example, the fiber length is about 0.03 cm to 5 cm,
More preferably, the fiber length is about 0.3 cm to 0.7 cm.

[0012] 150 g of this mixed fiber is 32cm x 34c
m was filled into a mold and lightly hand pressed to form. Next, the sample was removed from the mold and heat-treated at 130 ° C. for 30 minutes to obtain various samples.

These samples were prepared using various liquids (heavy oil A, water,
Benzene, toluene, xylene, trichloroethylene,
After immersion in tetrachloroethylene, dichloromethane and dichloroethane) for 5 minutes, it was left on a wire for 5 minutes, and the adsorption weight at that time was measured. The adsorption capacity was evaluated based on the weight of the sample adsorbed on 1 g.

FIG. 2 shows the adsorption capacity of heavy oil A and water, benzene,
The adsorption capacity of toluene and xylene and the adsorption capacity of trichloroethylene, tetrachloroethylene, dichloromethane and dichloroethane are shown.

In any of the samples, the amount of water adsorbed (water absorption) is 0.19 g / g or less, whereas that of Fuel A is 8.6 to less.
It shows an adsorption amount of 12.6 g / g, indicating that almost no water is adsorbed and heavy oil A can be selectively adsorbed. on the other hand,
All of the samples can adsorb the organic solvent to a high degree, and in particular, the sample containing the ground cardboard waste paper is excellent in the adsorbing ability.

Example 2 Paper containing a crushed sizing agent,
More specifically, using various types of printed waste paper (cardboard waste paper, PPC waste paper, newspaper waste paper) and a mixture thereof, 90 parts of the wood-based fiber is used as a binder as a binder, for example. 10 parts of a sheath-type polyester fiber was added, and a sample was prepared and the adsorption amounts of heavy oil A and water were measured according to Example 1.

The degree of crushing of the paper containing the sizing agent is as follows.
As in Example 1, the fiber length is, for example, about 0.03 cm to 5 cm, and more preferably, 0.3 cm to 0.5 cm.
The fiber length is about 7 cm.

The results are shown in FIG. 3, and it is clear that there is no significant difference in the heavy oil A and water adsorption capacities between the samples, and that any of the samples can be used as a good oil adsorbent raw material. (Example 3) On 90 parts of crushed crushed paper containing a sizing agent, more specifically, crushed cardboard waste paper, as a binding material (binder), for example, a core-sheath type polyester fiber or a single biodegradable material Lactron fiber (fiber length: 5m
m, fiber diameter: 3.1 denier, melting temperature 178 ° C) 10
Then, the sample was formed in a manner similar to that of Example 1. Thereafter, a sample was prepared by heat treatment at 130 ° C. for the case of using a core-sheath type polyester fiber or 180 ° C. for a case of using a single lactone fiber, for 30 minutes to prepare a sample. Was measured.

The degree of crushing of the paper containing the sizing agent is as follows.
As in Example 1, the fiber length is, for example, about 0.03 cm to 5 cm, and more preferably, 0.3 cm to 0.5 cm.
The fiber length is about 7 cm.

The results are shown in FIG. 4. As shown in FIG. 4, the core-sheath type polyester fiber and the single lactone fiber exhibited similar adsorption performance. Since wood fibers undergo biodegradation, it has become clear that using biodegradable fibers as binder fibers can produce an environmentally friendly adsorbent.

Example 4 The sample (sample No.-1) prepared in Example 1 was measured for its ability to adsorb an organic solvent volatilized as a gas. Various organic solvents were added to the bottom of the glass desiccator, and 5 g of the sample was placed on the middle plate in the desiccator. Immediately close the lid of the desiccator (close the exhaust cock at the top of the lid),
After leaving for 2 hours, an exhaust pipe and a gas detector tube (manufactured by Gastech Co., Ltd., measuring range: 1 to 100 ppm for benzene and toluene, 2 to 200 ppm for xylene, 2 to 200 ppm for trichloroethylene and tetratrichlorethylene after leaving for 2 hours)
250ppm, dichloromethane is 25 ~ 1500pp
(8,80 ppm of m, 1,2-dichloroethane) was connected with a Teflon tube. Set the gas extractor (manufactured by Gastec Co., Ltd.) on the gas detector tube, open the exhaust cock at the top of the lid, immediately pull the handle of the gas extractor at once to collect the gas in the desiccator, and read the scale on the detector tube. To measure the gas concentration. A control experiment in which the sample was not placed on the middle plate in the desiccator was performed in the same manner.

FIG. 6 shows the experimental apparatus, and FIG. 5 shows the results of the present invention. The product of the present invention is not limited to a liquid organic solvent.
It has been clarified that volatile organic solvents can also be adsorbed.

Further, in the above-mentioned embodiment, the paper containing the sizing agent is targeted, but the present invention can be similarly applied to pulp.

That is, the pulp is pulverized by a pulverizer (not shown).
The fiber length is pulverized to about 0.03 cm to 5 cm, more preferably to about 0.3 cm to 0.7 cm, and the pulverized pulp is immersed in a solution containing a water repellent. The water repellent is
An agent that imparts water repelling properties to the fiber surface, for example, manufactured by San Nopco Co., Ltd.
Slip Aid SL-140 and the like.

After immersion, the water-repellent ground pulp is dried, and the dried ground pulp is used as a binder (binder) in the same manner as in Example 1, for example, a core-sheath type polyester fiber (fiber length: 1 cm, Fiber diameter: 3 denier, sheath material melting temperature: 110 ° C., core material melting temperature: 225 ° C.) 10 parts were added, mixed well, and after mixing, heated, and ground pulp subjected to water repellency treatment with a binder was added. Can be combined to produce an adsorbent. Also in this adsorbent, similarly to the above-described embodiment, particularly, almost no water is adsorbed by the water repellent, and particularly, the organic solvent can be effectively adsorbed.

The adsorbent of the above embodiment (sample No. 1)
-13), an organic material characterized in that pulp crushed to a fiber length of about 0.03 cm to 5 cm is subjected to a water-repellent treatment with a water-repellent agent, and then the pulp pulp subjected to the water-repellent treatment is bonded with a binder. It has been found that the solvent adsorbent also adsorbs heavy metals such as zinc, copper, nickel and the like in addition to the organic solvent.

In practicing the present invention, crushed paper containing a sizing agent having high water repellency among wood-based fibers, more specifically, crushed paper of printed waste paper,
As the binder, for example, a resin fiber having a core-sheath structure is used, and the resin is treated at a temperature at which the sheath material melts after forming, and only the resin fiber sheath material is melted to form a wood-based fiber and a resin fiber core material. By bonding, an adsorbent having a desired shape can be formed.

The adsorbent is not limited to oil, but also includes aromatic hydrocarbons (benzene, benzene, etc.) contained in gasoline and aviation fuel.
In addition to adsorbing toluene and xylene, chlorinated hydrocarbons (trichloroethylene, tetrachloroethylene,
Dichloromethane, dichloroethane, etc.).

In practicing the present invention, a wide range of wood-based fibers such as waste paper, bark, and pulp can be used. Among them, waste paper has a keratinized fiber surface in a drying process during papermaking. And the addition of a sizing agent, it has excellent water repellency, and can use an old paper to adsorb the organic solvent well.

For grinding used paper, a hammer mill, impact crusher, rotary cutter or the like can be used as appropriate, and the degree of grinding of the paper is about 0.03 cm to 5 cm. And more preferably from 0.3 cm to 0.7
The fiber length is about cm. Further, in some cases, a water-repellent treatment may be applied to the crushed wood fiber.

The resin fibers used in carrying out the present invention serve as a binder for connecting the wood fibers, and a single or a core-sheath structure can be widely used. When a resin having a core-sheath structure having a sheath material that melts at a lower temperature is used, since the bonding between the resin fiber core material and the wood-based fiber becomes possible, the physical strength is higher than when single fiber is used. An adsorbent can be manufactured.

In order to improve the mixing property between the resin fiber and the crushed wood fiber, the length of the resin fiber is set to 0.03.
cm to 5 cm, and it is appropriate to add about 2 to 20 parts of wood fiber to 1 part of resin fiber.

The resin fibers can be appropriately selected from conventional fibers such as nylon, polyester and polyethylene and fibers having biodegradability.

The mixing and forming of the two fibers may be carried out according to a conventional method, and the heat treatment after the forming is carried out at a temperature at which the sheath material of the single resin fiber or the core-sheath resin fiber used is melted. good.

[0035]

According to the first aspect of the present invention, the adsorbent uses paper containing a sizing agent. If the adsorbent is applied to the upper surface where water and an organic solvent are mixed, the characteristics of the sizing agent are utilized. In addition, almost no water is adsorbed by the sizing agent, and in particular, the organic solvent can be effectively adsorbed by simple means.

Incidentally, the sizing agent makes the paper moderately hydrophobic,
A chemical used in the papermaking process for the purpose of preventing bleeding at the time of writing and adjusting the water absorption in the paper processing process,
Most paper other than tissue paper and toilet paper
Originally, a sizing agent was mixed in the paper processing process.

According to the experimental results, the adsorbent according to claim 2 has a crushing degree of the paper containing the sizing agent of 0.03 c
With a fiber length of about m to 5 cm, it has been found that organic solvents are particularly effectively adsorbed.

[0038]

[0039]

[0040]

[Brief description of the drawings]

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 shows a blending ratio of wood fiber and polyester fiber of an adsorbent.

FIG. 2 shows the adsorption capacity of an adsorbent.

FIG. 3 shows the oil and water adsorption capacity of various used papers.

FIG. 4 shows the effect of binder fibers on adsorption capacity.

FIG. 5 shows the ability to adsorb volatile organic solvents.

FIG. 6 schematically shows an experimental apparatus.

[Explanation of symbols]

Claims (2)

(57) [Claims] 1. A and paper ground sizing agent containing, Ri Na are bonded through bonding agent the paper between the ground sizing agent containing, before
The paper containing the crushed sizing agent is printed waste paper.
Adsorbent characterized by Rukoto Oh. 2. The paper containing the crushed sizing agent is 0.03 c
Ri about a fiber length Sadea M～5cm, binder, sheath-core
Adsorber according to claim 1, wherein the polyester fibers der Rukoto.