title: Synergistically strengthened 3D micro-scavenger cage adsorbent for selective removal of radioactive cesium.
abstract: A novel microporous three-dimensional pomegranate-like micro-scavenger cage (P-MSC) composite has been synthesized by immobilization of iron phyllosilicates clay onto a Prussian blue (PB)/alginate matrix and tested for the removal of radioactive cesium from aqueous solution. Experimental results show that the adsorption capacity increases with increasing the inactive cesium concentration from 1 ppm to 30 ppm, which may be attributed to greater number of adsorption sites and further increase in the inactive cesium concentration has no effect. The P-MSC composite exhibit maximum adsorption capacity of 108.06 mg of inactive cesium per gram of adsorbent. The adsorption isotherm is better fitted to the Freundlich model than the Langmuir model. In addition, kinetics studies show that the adsorption process is consistent with a pseudo second-order model. Furthermore, at equilibrium, the composite has an outstanding adsorption capacity of 99.24% for the radioactive cesium from aqueous solution. This may be ascribed to the fact that the AIP clay played a substantial role in protecting PB release from the P-MSC composite by cross-linking with alginate to improve the mechanical stability. Excellent adsorption capacity, easy separation, and good selectivity make the adsorbent suitable for the removal of radioactive cesium from seawater around nuclear plants and/or after nuclear accidents.
authors.affiliation: Department of Biological Engineering, Biohybrid Systems Research Center (BSRC), Inha University, 100 Inha-ro, Incheon 22212, Republic of Korea.|Biotechnology Research Division, Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI), 29 Geumgu-gil, Jeongeup-si, Jeonbuk 56212, Republic of Korea.
authors.forename: Sung-Chan
authors.initials: SC
authors.lastname: Jang
authors.affiliation: Department of Biological Engineering, Biohybrid Systems Research Center (BSRC), Inha University, 100 Inha-ro, Incheon 22212, Republic of Korea.|Department of Chemical Engineering, Chungnam National University, 99 Daehak-ro, Daejeon 34134, Republic of Korea.
authors.forename: Sung-Min
authors.initials: SM
authors.lastname: Kang
authors.affiliation: Department of Energy and Materials Engineering, Dongguk University-Seoul, 30 Pildong-ro 1-gil, Seoul 04620, Republic of Korea.
authors.forename: Yuvaraj
authors.initials: Y
authors.lastname: Haldorai
authors.affiliation: Department of Biological Engineering, Biohybrid Systems Research Center (BSRC), Inha University, 100 Inha-ro, Incheon 22212, Republic of Korea.
authors.forename: Krishnan
authors.initials: K
authors.lastname: Giribabu
authors.affiliation: Department of Biological Engineering, Biohybrid Systems Research Center (BSRC), Inha University, 100 Inha-ro, Incheon 22212, Republic of Korea.|Quality Management Team, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Daejeon 34129, Republic of Korea.
authors.forename: Go-Woon
authors.initials: GW
authors.lastname: Lee
authors.affiliation: Department of BioNano Technology, Gachon University, 1342 Seongnam-daero, Seongnam-si, Gyeonggi-do 13120, Republic of Korea.
authors.forename: Young-Chul
authors.initials: YC
authors.lastname: Lee
authors.affiliation: Measurement &Analysisi Team, National Nanofab Center, 291 Daehak-ro, Daejeon 34141, Republic of Korea.
authors.forename: Moon Seop
authors.initials: MS
authors.lastname: Hyun
authors.affiliation: Department of Energy and Materials Engineering, Dongguk University-Seoul, 30 Pildong-ro 1-gil, Seoul 04620, Republic of Korea.
authors.forename: Young-Kyu
authors.initials: YK
authors.lastname: Han
authors.affiliation: Biotechnology Research Division, Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI), 29 Geumgu-gil, Jeongeup-si, Jeonbuk 56212, Republic of Korea.|Radiation Biotechnology and Applied Radioisotope Science, University of Science and Technology (UST), 217 Gajeong-ro, Daejeon 34113, Republic of Korea.
authors.forename: Changhyun
authors.initials: C
authors.lastname: Roh
authors.affiliation: Department of Biological Engineering, Biohybrid Systems Research Center (BSRC), Inha University, 100 Inha-ro, Incheon 22212, Republic of Korea.
authors.forename: Yun Suk
authors.initials: YS
authors.lastname: Huh