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Environ. Int., Volume 175, May 2023, 107963 | https://doi.org/10.1016/j.envint.2023.107963 Crystallization-based upcycling of iron oxyhydroxide for efficient arsenic capture in contaminated soils

Yun-Sik Lee ^a,1, Bum Chul Park ^b,1, Dae Beom Lee ^c,d,1, Hyun-Gi Min ^e, Min-Suk Kim ^f, Sung-Chul Kim ^g, Sung Ok Won ^g, June Wee ^e, Eunji Chae^e, Cheolho Simⁱ, Youngeun Kim ^e, Jeong-Gyu Kim^h, Young Keun Kim ^c,d, Kijong Cho ^h

^aDepartment of Biology Education, Pusan National University, Busan 46241, Republic of Korea
^bBiointerfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA
^cDepartment of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
^dBrain Korea Center for Smart Materials and Devices, Korea University, Seoul 02841, Republic of Korea
^eOjeong Eco-Resilience Institute, Korea University, Seoul 02841, Republic of Korea
^fWaste Resources Management Division Resource Recirculation Bureau, Ministry of Environment, Sejong-si 30103, Republic of Korea
^gAdvanced Analysis and Data Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
^hDivision of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea
ⁱDepartment of Biology, Baylor University, Waco, TX 76706, USA

¹These authors contributed equally to this work.
Corresponding authors : Young Keun Kim, Kijong Cho

Abstract

Arsenic (As)-contaminated soil inevitably exists in nature and has become a global challenge for a sustainable future. Current processes for As capture using natural and structurally engineered nanomaterials are neither scientifically nor economically viable. Here, we established a feasible strategy to enhance As-capture efficiency and ecosystem health by structurally reorganizing iron oxyhydroxide, a natural As stabilizer. We propose crystallization to reorganize FeOOH-acetate nanoplatelets (r-FAN), which is universal for either scalable chemical synthesis or reproduction from natural iron oxyhydroxide phases. The r-FAN with wide interlayer spacing immobilizes As species through a synergistic mechanism of electrostatic intercalation and surface chemisorption. The r-FAN rehabilitates the ecological fitness of As-contaminated artificial and mine soils, as manifested by the integrated bioassay results of collembolan and plants. Our findings will serve as a cornerstone for crystallization-based material engineering for sustainable environmental applications and for understanding the interactions between soil, nanoparticles, and contaminants.

논문정보

형식Research article
게재일2023년 05월 (BRIC 등록일 2023-05-22)
연구진국내(교신)+국외 연구진
분야 바이오·의료융합 > 바이오센싱 및 나노바이오물질

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