摘要:
Sulfonated styrene polymer and/or its salt, a waste water treatment material and sludge dehydrating agent each containing the sulfonated styrene polymer and/or its salt as an effective component thereof are disclosed. The waste water treatment material is used such that the sulfonated styrene polymer and/or its salt, which has a viscosity of 10 mPa·S to 20,000 mPa·S at 25° C. after 0.01 N to 5 N of a neutral salt has been added to the 1 wt % water solution of the sulfonated styrene polymer and/or its salt, is added to each waste water so that waste water is purified. When a sludge dehydrating agent is required, the sulfonated styrene polymer and/or its salt having a weight average molecular weight of 1,100,000 or greater is combined with a cation polymer flocculating agent or an inorganic flocculating agent.
摘要:
An indium adsorbent is provided that is obtained by the following process. A hydrophilic polymer having a carboxyl group in which indium is incorporated in advance is caused to absorb an aqueous solution of a water-soluble monomer, a cross-linking agent, and a polymerization initiator, and an acid treatment is performed on a polymer obtained by polymerizing the water-soluble monomer, to obtain the indium adsorbent. The indium adsorbent has a template architecture with respect to indium. Accordingly, the indium adsorbent is capable of adsorbing indium with a high selectivity. An indium selection rate is 2.0 or more with respect to zinc.
摘要:
Disclosed are a plant-derived flocculant and a flocculant mixture having a higher flocculation capacity. The plant-derived flocculant comprises at least one of a dried matter of Corchorus olitorius, a dried matter of Begonia fimbristipula, a dried matter of bananas, and a dried matter of Corchorus capsularis; the plant-derived flocculant has a colloid equivalent of −1.5 mEq/g to −0.20 mEq/g, and the 2 weight % aqueous solution of the plant-derived flocculant has a viscosity of at least 6.0×10−3 Pa·s (6.0 cP). The flocculant mixture of the invention comprises the plant-derived flocculant described above and a synthetic polymer flocculant having a colloid equivalent of −4.5 mEq/g to −1.2 mEq/g, whose 0.2 weight % aqueous solution has a viscosity of 1.3×10−1Pa·s to 4×10−1 Pa·s (130 cP to 400 cP).
摘要:
[Object] To provide a polycarbonate resin composition that is thin but has high flame retardancy and surface hardness for which a hard coating layer is not required, causes less gas generation in molding, has excellent heat resistance, preservation stability, and recyclability, and does not contain bromine and phosphate flame retardants, and to provide a molded product thereof.[Solving Means] A polycarbonate resin composition includes, as a main resin material, an aromatic polycarbonate resin occupying 85 to 95 mass % of the main resin material and having a weight-average molecular weight of 37000 to 55000 in polystyrene equivalent molecular weight, and a polystyrene resin occupying 15 to 5 mass % of the main resin material and containing no rubber component. A resin component other than the above may be contained resulting from recycled materials as long as the characteristics of the resin composition are not impaired. A polyfluoroolefin resin, an organic sulfonate flame retardant, and a silicon flame retardant are added to the resin material. The aromatic polycarbonate resin composition is molded into a predetermined shape.
摘要:
An indium adsorbent includes a polymer material having a template architecture with respect to indium, the indium adsorbent having an adsorption selection rate of indium with respect to zinc of 2.0 or more.
摘要:
A system to recycle plastics, which enables a supply of recycled plastics having a stable quality required for the recycled products. A system to recycle a used plastic material as a resin material including (a) means to sort used plastic materials for the purpose of recycling said used plastic materials, (b) means to crush and melt said used plastic material after it has been sorted, (c) reviving means to regain a desired property, and (d) means to measure a physical property of a reclaimed plastic after it has been revived and to indicate said measured physical property for quality assurance.
摘要:
A system for recycling spent sulfuric acid, wherein spent sulfuric acid is effectively utilized at a place other than a discharge source regardless of geographical conditions, and a method for recycling waste sulfuric acid. In the system, when spent sulfuric acid that is discharged or collected at a discharge source is transported by a carrier unit and used at a user office a concentration of the spent sulfuric acid is measured and/or adjusted at least at one of the discharge source, the carrier unit, and the user office. The spent sulfuric acid waste liquid that is discharged or collected at the discharge source is reutilized by being mixed with at least one of a hydrogen peroxide solution and water.
摘要:
It is an object of the present invention to provide a blasting method and a shot material, which are very practical both in the cost and the treatment performance. (a) A shot material containing a styrene ion-exchange resin or a waste material caused therefrom, or/and a dried sludge-derived material, (b) a shot material containing a resin which is comprised of a resin containing a rubber component and a resin containing no rubber component, and (c) a shot material containing at least one component selected from the group consisting of an epoxy resin composition and inorganic filler, and a blasting method using the shot material.
摘要:
A technique of utilizing a sulfuric acid/peroxide liquid mixture, for example, its waste liquid material, is to be developed so that the waste liquid can be re-utilized and effectively applied to obviate the problem resulting from disposal. To this end, there is provided a method for utilizing a sulfuric acid/peroxide liquid mixture, for example, its waste liquid, in which peroxide in the sulfuric acid/peroxide liquid mixture is decomposed to render it possible to utilize the liquid mixture as sulfuric acid.
摘要:
A method of manufacturing a polyelectrolyte having the step of sulfonating polystyrene resin in a state where the polystyrene resin has been dissolved or dispersed in solvent composed of alicyclic compounds.