Abstract: Provided is a fixation method of carbon dioxide. The method includes a) grinding waste gypsum to become 200˜300 mesh; b) performing reaction by supplying mixed gas while mixing the ground waste gypsum with aqueous ammonia, and c) separating solid from liquid in the manufactured slurry by centrifugation and drying separated solid and liquid portions with calcite and ammonium sulfate, wherein the mixed gas is formed of nitrogen and carbon dioxide, and the carbon dioxide provides carbon dioxide fixation method containing 5˜25 wt %. When carbon dioxide is fixed by using waste gypsum, reaction efficiency is remarkably high. The fixation method makes more than 95% of supplied carbon dioxide fixed. Also, provided is an economical method that disposes carbon dioxide as a disposal target without its separation, refinement and liquefaction processes, to thereby remarkably reduce the entire process and costs for processes.

Abstract: Disclosed are a method for fabrication of a calcium carbonate thin film comprising adding a calcium agent to a container receiving an additive-dissolved water to dissolve calcium agent and leaving a mixture of the calcium agent and the additive in water for a predetermined period to form a calcium carbonate thin film with a shape-controlled finestructure pattern wherein the pattern is selected from nanostructure pattern, microstructure pattern and a combined nanostructure and microstructure pattern, and, in addition, a calcium carbonate thin film with a shape-controlled microstructure pattern formed by the foregoing method, a metallic film with a shape-controlled microstructure pattern which includes a template comprising the calcium carbonate thin film with a shape-controlled microstructure pattern formed by the foregoing method and a process for fabrication thereof, as well as a polymer with a shape-controlled microstructure pattern having the calcium carbonate thin film with a shape-controlled microstructu

Abstract: A method is developed for fabrication of an ammonia gas adsorbent using Fe-zeolite. This method uses Fe-zeolite obtained from municipal waste slag to prepare a gas adsorbent, thereby reusing molten slag as a specified waste so as to improve the value of the waste. To achieve the purpose, the method includes mixing Fe-zeolite powder with a forming adjuvant to prepare a mixture; adding a forming agent to the mixture to obtain a granular Fe-zeolite product; and drying and calcining the obtained granular Fe-zeolite product. Therefore, Fe-zeolite obtained from molten slag as a waste product can be reused as an ammonia gas adsorbent.