JPH03296485A - Preparation of bactericide-algicide by freezing of copper ion-containing gel - Google Patents

Abstract

PURPOSE:To obtain a gel showing high bactericidal and algicidal effect in water by introducing an aqueous sodium alginate solution into a mold to mold the same into an arbitrary shape by freezing and charging the molded one in an aqueous solution of copper sulfate or the like to subject the same to substitution reaction. CONSTITUTION:A 2.0-3.5% aqueous sodium alginate solution is injected in a mold and frozen to be molded into an arbitrary shape and the molded one is subsequently added to a 1.0-5.0% aqueous solution of copper sulfate or copper chloride to be subjected to substitution reaction to obtain a copper ion-containing gel. Concretely, in a process for preparing a spherical gel 3, a flange-shaped support plate 2 is fitted to one end of yarn 1 and the yarn 1 is allowed to pierce through the gel 3 so as to support the lower end part of the gel 3 by the support plate 2. A suction cup 4 is fitted to the upper end of the yarn 1 and sucked to a wall to suspend the gel 3 at a required place.

Description

[Detailed description of the invention] [Industrial application field] The second invention is to mold a gel containing copper ions, which is used to suppress the growth of algae in ponds, aquariums, etc., by a freezing method. The present invention relates to a method for producing a shaped gel that allows production to match the shape of a housing, and is characterized in that steel ions are dissolved in small amounts.

[Conventional technology]

When using a method in which a sodium alginate aqueous solution is discharged by a pump (suitable for sulfuric acid steel or copper chloride aqueous solutions),
The size of the gel beads is determined by the diameter of the discharge port, and there is also a limit to the size. Furthermore, due to the shape of gel beads, it was difficult to shape them into other shapes.

[Problem to be solved by the invention]

Conventionally, this type of gel beads have a size of about 3 to 7 inches, and because they are stored in a housing during use, there is a limit to the range of their use.

[Means to solve the problem]

According to this invention, after dissolving sodium alginate as an aqueous solution, it is placed in a mold of any shape and the mixture is heated at -5°C to
It is cooled to −10° C., placed in a frozen state in a solution of copper sulfate or steel chloride, and stirred well to cause a substitution reaction, so that copper ions can be incorporated into the shaped gel.

This shape can be a large ball, a cube such as a triangular pyramid, a hexagonal prism, a round prism, etc., or a thin plate.5 It can also be made of thread or string made of cotton, polyester resin, polyamide resin, poval resin, etc. , and nets etc. are installed before cooling,
By letting one end of the shaped gel out to the outside and cooling it, the finished shaped gel has a string attached, and this string can be used.

Because it can be hung or mounted.

[Operation] By storing the shaped gel produced as described above in a housing or placing it in water, steel ions are made fstB little by little, and the shape gel can be used alone for a long period of time. It is intended to achieve bactericidal and algaecide effects.

[Example] Next, an example of the use of the shaped shell obtained by the method of the present invention will be described.

In Figure 1, cotton and polyester resin.

Yarn I made of fibers such as polyamide resin, poval resin, etc.
A brim-shaped support plate 2 is attached to one end, and during the manufacturing process of the spherical gel 3, the support plate 2 supports the lower end of the gel 3 so that the yarn 1 passes through the inside of the gel 3. A suction cup 4 is attached to the upper end of this thread 1, and this suction cup 4 is properly adsorbed to a wall etc. so that the gel 3 is suspended at a desired location. When the gel 3 is installed vertically, the suction cup 4
An example in which a hook 6 is used instead of is shown in FIG.

[Effect of the Invention J According to the present invention, the sterilizing and algaecide functions can be maintained automatically in water for a long period of time using an extremely simple method.

[Brief explanation of the drawing]

FIG. 1 is an elevational view showing the gel obtained by the method of the invention in a ready-to-use state. FIG. 2 is an explanatory diagram showing another usage state. In addition, in the figure. l Thread 2 Support plate 3 Gel, Figure 1, Figure 2, etc.

Claims (1)

[Claims] 1) Molding into any desired shape by placing 2.0% to 3.5% sodium alginate aqueous solution in a mold and freezing;
This is added to an aqueous solution of copper sulfate or copper chloride of 1.0% to 5.0% and subjected to a substitution reaction to obtain various forms of alginic acid/copper. Manufacturing method using frozen molding method. 2) A method for producing a shaped gel having the function according to claim 1, which comprises incorporating fibers such as cotton, polyester resin, polyamide resin, poval resin, etc. into threads or meshes during freezing. 3) A method for producing a dried shaped gel having the function according to claim 1 or 2, wherein the shaped gel is dried to remove moisture.