Crystallization-based upcycling of iron oxyhydroxide for efficient arsenic capture in contaminated soils

• DOI: 10.1016/j.envint.2023.107963
• Publication Date: 2023-05-10T15:53:31Z
• Authors: Yun-Sik Lee; Bum Chul Park; Dae Beom Lee; Hyun-Gi Min; Min-Suk Kim; Sung-Chul Kim; Sung Ok Won; June Wee; Eunji Chae; Cheolho Sim; Youngeun Kim; Jeong-Gyu Kim; Young Keun Kim; Kijong Cho
• Keywords: Sustainable Crystallization; Nanomaterial; Soil amendments; Arsenic capture; 12. Responsible consumption; Arsenic; Environmental sciences; Soil; 13. Climate action; Soil Pollutants; GE1-350; Iron oxyhydroxide; Crystallization; Ecosystem

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