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Sim, Ju Yong,Kim, Jeongyup,Lee, Won-gil,Cho, Won-Je,Justin Raj, C.,Kim, Byung Chul,Yu, Kook Hyun Springer Science + Business Media 2018 Journal of coatings technology and research Vol.15 No.4
<P>A polybisphenol A epichlorohydrin/antimony-doped tin oxide (PBAE/ATO) polymer composite solution was prepared by utilizing various weight percentages of ATO nanoparticles (similar to 19 nm). The optical properties of the PBAE/ATO composites were analyzed by fabricating thin films on glass substrates. The polymeric film with 3 wt% ATO showed good transparency in the visible and UV regions and strong absorption in the NIR region. Moreover, under light illumination, the PBAE/ATO thin film displayed an similar to 24.4A degrees C rise in temperature relative to the reference thin film. In addition, the outdoor NIR absorption efficiency was studied by spray coating a PBAE/ATO thin film over a vinyl greenhouse, and it was observed that the PBAE/ATO-coated greenhouse prevented snow deposition during the winter by melting the snowflakes through NIR absorption.</P>
Lee, Hee Suk,Lee, Jeongyup,Yoon, Byengsuk,Yim, Youjin,Choi, Ilhwan,Cho, Hyukjin,Lee, Songhee,Baik, Kyounghee,Park, Ju Hyeon,Huh, Yu Jeong IWA Publishing 2013 WATER SCIENCE AND TECHNOLOGY -WATER SUPPLY- Vol.13 No.5
<P>Due to the tragic disaster that happened in Japan and crippled the Fukushima nuclear power plant, serious concerns have been raised regarding the contamination of drinking water as a result of the radioactive materials that were released. Even though the quantities of radioactive material in rain were relatively low, people were concerned about the drinking water. Therefore, there is a need to know the removal efficiency of the unit process of water treatment and to prepare a safety plan to protect the public's health from radioactive materials. In this study, the laboratory scale removal rates were estimated for the coagulation/flocculation, adsorption, and ion exchange processes. The reference standard materials which are stable elements, Cesium-133 (Cs-133) and Iodine-127 (I-127), were used for the typical and advanced water treatment processes at the laboratory scale. For the coagulation/flocculation process, three major coagulants were assessed for this process. However, the removal rates of this process were low. For the adsorption process, powdered activated carbon and zeolites were investigated. The powdered activated carbon showed insignificant removal rates for both reference materials. However, synthetic zeolite was an effective process for Cs-133, and the ion exchange method showed high removal rates for both Cs-133 and I-127.</P>