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( Hideo Minato ),( Tatsuo Morimoto ),( Kian Cho ),( Jaewan Pak ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.1
Contaminated soil and water by heavy metals, arsenic and other toxic pollutions are usually created under human activities. An effective remediation technique for the polluted land has been developed using of natural materials, such as zeolite, volcanic loam (weathered volcanic ash), and dolomite, instead of artificial materials, such as chemicals, organic compounds, concrete, and etc. The mechanism of cation exchange and/or adsorption conducts those hazardous heavy metals and arsenic in the polluted soil to be fixed and settled into newly crystallized hydrous alkaline and alkaline earth aluminosilicates as minor elements. The technique to use natural materials that trap and fix hazardous metals is called as Sealing Soil Technique. This is applicable not only for the remediation for polluted soil but also for materials of clay barrier to be used as a wall and/or bed of final waste disposal site of urban area. One of the immense advantages is to prevent secondary pollution derived from seepage that contains decomposed chemical substances and organic matters, used for the remediation treatment and barrier material. Using the similar technique we have develop effective procedure in low cost using a prescribed mixture of mainly natural material, zeolite, clay, dolomite and others under the name of TRP for remediation of contaminated water with heavy metals and arsenic from various sources. It includes a process to neutralize, oxidize, precipitate and filtrate out the precipitates of metals and arsenic under severe pH control.
Mode matching telescope design and simulation for the EPR-SIPS experiment
Sumin Lee,Chang Hee Kim,Jimin Han,Sibilla Di Pace,V Sequino,Yunjong Kim,Changgon Kim,Hojae Ahn,Soojong Pak,Sungho Lee,Jaewan Kim,M Bawaj,M Barsuglia,M Bazzan,E Calloni,G Ciani,L Conti,B D’Angelo,M De 한국천문학회 2022 天文學會報 Vol.47 No.1