Nanoscale Fe(0)-zeolite composite derived from coal bottom ash for efficient treatment of Cr(VI)-contaminated groundwater: Unveiling the importance of locations for surface-bound Fe(II) and Fe(0) passivation products.

• Tác giả: Sungjun Bae, Younwon Kang, Hanwool Yoon, Sunho Yoon
• Ngôn ngữ: eng
• Thông tin xuất bản: Netherlands : Journal of hazardous materials , 2025
• Bộ sưu tập: NCBI
• ID: 701282

Tóm tắt

 The synthesis of coal bottom ash-induced zeolite (Si-Al material) has been widely reported
  however, the selective recovery of the three main elements, viz., Si, Al, and Fe, from coal bottom ash for the synthesis of reactive adsorbents has not yet been reported. In this study, we separated the magnetic and non-magnetic fractions of coal bottom ash to selectively recover Fe and Si-Al for synthesizing nanoscale zero-valent iron@zeolite (NZVI@ZBA) composites with uniform formation of Fe(0) nanoparticles on the ZBA surface. NZVI@ZBA exhibited a higher removal capacity for Cr(VI) (153.9 mg g