Abstract:
The present invention leaches platinum groups from industrial waste containing platinum group metals (platinum (Pt), ruthenium (Ru), osmium (Os), rhodium (Rh), iridium (Ir), palladium (Pd)), adsorbs onto an absorbent platinum group metal ions inside a leachate, desorbs the platinum group metal ions attached to the adsorbent using a desorbent to recover high concentration platinum group metal ion mixed solution, and also, recover the platinum group metal ions in the metallic form by ashing the adsorbent having the platinum group metal ions attached thereto. In addition, the platinum dissolved through a dissolving process from the ash mixed with the platinum group metals after the ashing process can be recovered as high concentration platinum ion, and undissolved ruthenium can be isolated in a metallic form.
Abstract:
Disclosed herein are a method for synthesizing one-dimensional helical mesoporous structure, in which a self-assembled structure of a glycine-derived surfactant is used as a template at room temperature to synthesize the one-dimensional helical mesoporous silica structures having a uniform pore size and a method for synthesizing a glycine-derived surfactant for synthesizing the helical nanoporous structures, in which relatively expensive surfactant can be easily recovered using an organic solvent and reused, which provides economical and environment friendly effects and the glycine-derived surfactant is synthesized by homogeneously heating a reaction product of glycine and phthalic anhydride by dielectric heating with irradiation of microwave, whereby it is possible to realize high yield of the glycine-derived surfactant, shortened synthesis time and increase in energy efficiency, leading to improvement in productivity and reduction in production cost.
Abstract:
The present invention relates to a method for recovering a precious metal (palladium) after a polyketone polymerization reaction, and comprises the steps of: (a) generating a first reaction waste liquid by filtering the polyketone produced by the polyketone polymerization reaction with a reaction medium; (b) generating a second reaction waste liquid by drying a slurry of the produced polyketone; (c) recovering the reaction medium and generating distilled waste liquid through distillation of the first reaction waste liquid and the second reaction waste liquid; (d) adsorbing and isolating the palladium using an ion exchange resin from the distilled waste liquid; and (e) recovering the enriched palladium by desorbing the adsorbed palladium on the ion exchange resin.
Abstract:
The present invention relates to a device for control each temperature of warm circulation water of each room control system that makes it possible to maintain similar temperature throughout the floor of one room provided with a plurality of pipes. To achieve the above, the present invention has a structure including: a boiler that creates combustion heat, exchanges the heat with heating water, and then circulates the heated water through a heating load; one or more heating loads having a plurality of heat pipes for one room; heating control valves that are provided for the heat pipes, respectively, to allow or stop the circulation of the heating water through the heat pipes; return water temperature detecting sensors that detect temperature of return water in the heat pipes; an individual room controller that is able to set temperature of the heating water and calculates needed quantity of heat by comparing the set temperature of the heating water with return water temperature; a valve controller that receives the return water temperature from the return water temperature detecting sensors, transmits the return water temperature to the individual room controller, and outputs control signals by determining independent turning on/off of the heating control valves in order to maintain the same return water temperature for the same heating loads; and a valve actuating unit that turns on/off the heating control valves in response to the control signals of the valve controller.
Abstract:
The present invention relates to a device for control each temperature of warm circulation water of each room control system that makes it possible to maintain similar temperature throughout the floor of one room provided with a plurality of pipes. To achieve the above, the present invention has a structure including: a boiler that creates combustion heat, exchanges the heat with heating water, and then circulates the heated water through a heating load; one or more heating loads having a plurality of heat pipes for one room; heating control valves that are provided for the heat pipes, respectively, to allow or stop the circulation of the heating water through the heat pipes; return water temperature detecting sensors that detect temperature of return water in the heat pipes; an individual room controller that is able to set temperature of the heating water and calculates needed quantity of heat by comparing the set temperature of the heating water with return water temperature; a valve controller that receives the return water temperature from the return water temperature detecting sensors, transmits the return water temperature to the individual room controller, and outputs control signals by determining independent turning on/off of the heating control valves in order to maintain the same return water temperature for the same heating loads; and a valve actuating unit that turns on/off the heating control valves in response to the control signals of the valve controller.
Abstract:
Disclosed herein are a method for synthesizing one-dimensional helical mesoporous structure, in which a self-assembled structure of a glycine-derived surfactant is used as a template at room temperature to synthesize the one-dimensional helical mesoporous silica structures having a uniform pore size and a method for synthesizing a glycine-derived surfactant for synthesizing the helical nanoporous structures, in which relatively expensive surfactant can be easily recovered using an organic solvent and reused, which provides economical and environment friendly effects and the glycine-derived surfactant is synthesized by homogeneously heating a reaction product of glycine and phthalic anhydride by dielectric heating with irradiation of microwave, whereby it is possible to realize high yield of the glycine-derived surfactant, shortened synthesis time and increase in energy efficiency, leading to improvement in productivity and reduction in production cost.
Abstract:
A a chair with a combination back support and cover plate is provided, which solves a burdensome affair that a user consistently holds up a back support folded on a seat until he or she sits on the seat, makes the back support automatically folded on the seat after use of the seat, to thereby enhance convenience of use, and prevents the back support from being unfolded upwards from the state where the back support has been folded on the seat due to wind, to thereby prevent the seat from being polluted due to dust or rainwater.