| Precipitation behavior of Ca (OH) 2, Mg (OH) 2, and Mn (OH) 2 from CaCl2, MgCl2, and MnCl2 in NaOH-H2O solutions and study of lithium recovery from seawater via two-stage … N Um, T Hirato Hydrometallurgy 146, 142-148, 2014 | 89 | 2014 |
| Dissolution behavior of La2O3, Pr2O3, Nd2O3, CaO and Al2O3 in sulfuric acid solutions and study of cerium recovery from rare earth polishing powder waste via two-stage sulfuric … N Um, T Hirato Materials Transactions 54 (5), 713-719, 2013 | 60 | 2013 |
| New policy framework with plastic waste control plan for effective plastic waste management SK Shin, N Um, YJ Kim, NH Cho, TW Jeon Sustainability 12 (15), 6049, 2020 | 51 | 2020 |
| Strategic environmental assessment for effective waste management in Korea: A review of the new policy framework N Um, YY Kang, KH Kim, SK Shin, Y Lee Waste Management 82, 129-138, 2018 | 37 | 2018 |
| Precipitation of cerium sulfate converted from cerium oxide in sulfuric acid solutions and the conversion kinetics N Um, T Hirato Materials transactions 53 (11), 1986-1991, 2012 | 37 | 2012 |
| Application of material flow analysis for plastic waste management in the Republic of Korea MY Lee, NH Cho, SJ Lee, N Um, TW Jeon, YY Kang Journal of environmental management 299, 113625, 2021 | 36 | 2021 |
| A hydrometallurgical method of energy saving type for separation of rare earth elements from rare earth polishing powder wastes with middle fraction of ceria UM Namil, T Hirato Journal of Rare Earths 34 (5), 536-542, 2016 | 32 | 2016 |
| Factors affecting the crystal growth of scalenohedral calcite by a carbonation process T Thriveni, N Um, SY Nam, YJ Ahn, C Han, JW Ahn Journal of the Korean Ceramic Society 51 (2), 107-114, 2014 | 25 | 2014 |
| Effect of accelerated carbonation on the leaching behavior of Cr in municipal solid waste incinerator bottom ash and the carbonation kinetics N Um, SY Nam, JW Ahn Materials Transactions 54 (8), 1510-1516, 2013 | 25 | 2013 |
| Effects of two different accelerated carbonation processes on MSWI bottom ash N Um, JW Ahn Process Safety and Environmental Protection 111, 560-568, 2017 | 19 | 2017 |
| Hydrometallurgical recovery process of rare earth elements from waste: main application of acid leaching with devised τ-T diagram N Um, N Um Rare Earth Elem, 44-58, 2017 | 17 | 2017 |
| Pretreatment method for the utilization of the coal ash landfilled in ash ponds N Um, TW Jeon Process Safety and Environmental Protection 153, 192-204, 2021 | 15 | 2021 |
| Dissolution of cerium oxide in sulfuric acid N Um, M Miyake, T Hirato Zero-Carbon Energy Kyoto 2010: Proceedings of the Second International …, 2011 | 14 | 2011 |
| Immobilization of Pb, Cd and Cr by synthetic NaP1 zeolites from coal bottom ash treated by density separation NI UM, GC HAN, KS YOU, JW AHN Resources Processing 56 (3), 130-137, 2009 | 12 | 2009 |
| Recovery of ferromagnetic material by wet magnetic separation in coal bottom ash GC Han, NI Um, KS You, HC Cho, JW Ahn Geosystem Engineering 12 (1), 9-12, 2009 | 10 | 2009 |
| Characteristic of carbonation reaction from municipal solid waste incinerator bottom ash as a function of water content and their effect on the stabilization of copper and lead JW Ahn, HC Cho, KS You, GC Han, NI Um Materials science forum 544, 533-536, 2007 | 10 | 2007 |
| Effect of carbonation in removal of chloride from municipal solid waste incineration bottom ash JW Ahn, NI Um, GC Han, KS You, HC Cho Geosystem Engineering 9 (4), 87-90, 2006 | 9 | 2006 |
| Effect of Cl removal in MSWI bottom ash via carbonation with CO2 and decomposition kinetics of Friedel’s salt N Um Materials transactions 60 (5), 837-844, 2019 | 8 | 2019 |
| Conversion kinetics of cerium oxide into sodium cerium sulfate in Na2SO4–H2SO4–H2O solutions N Um, T Hirato Materials Transactions 53 (11), 1992-1996, 2012 | 7 | 2012 |
| Characteristic of Cu and Pb leaching behavior of municipal solid waste incineration bottom ash JW Ahn, HC Cho, GC Han, GS You, NI Um Geosystem Engineering 9 (1), 11-14, 2006 | 7 | 2006 |
