Fabrication of Fe3O4/ZIF-8 nanocomposite for simultaneous removal of copper and arsenic from water/soil/swine urine. (15th July 2021)

• Record Type: Journal Article
• Authors: Wu, Qingchuan; Wang, Dongfang; Chen, Chaowen; Peng, Cheng; Cai, Dongqing; Wu, Zhengyan
• Is Part Of: Journal of environmental management. Volume 290(2021)
• Publication Date: 2021-07-15
• Subjects: Fe3O4 -- Zeolitic imidazolate framework-8 -- Bivalent copper -- Trivalent arsenic -- Adsorption; Environmental policy -- Periodicals; Environmental management -- Periodicals; Environment -- Periodicals; Ecology -- Periodicals; 363.705
• DOI: 10.1016/j.jenvman.2021.112626
• Languages: English
• ISSNs: 0301-4797

Abstract

Abstract: In this study, a magnetic nanocomposite (denoted as FZ) was fabricated using Fe 3 O 4 and zeolitic imidazolate framework-8 (ZIF-8), based on a coprecipitation method. FZ could efficiently remove Cu 2+ ( Cu(II)) and AsO2 − (As(III)) ions simultaneously from water, soil, and swine urine samples through hydrogen bonding and electrostatic interactions. The Cu(II) and As(III) removal efficiencies of the optimal FZ sample increased gradually with time and reached 99.1% and 98.4%, respectively, in 180 min. The maximum adsorption capacities of FZ4 for Cu(II) and As(III) were determined to be 33.48 mg/g and 21.12 mg/g, respectively. Additionally, the FZ with a high saturation magnetization (49.8 emu/g) was easily recovered from aqueous solutions and soil samples. Furthermore, zebrafish experiments indicated that FZ possessed a high biosafety. Thus, this study introduces a promising method for treating water, soil, and swine urine samples contaminated with Cu(II) and As(III), and verifies that FZ is suitable for practical application. Highlights: A magnetic nanocomposite named as FZ was fabricated using Fe3 O4 and ZIF-8. FZ can remove Cu(II) and As(III) from water, soil, and swine urine simultaneously. FZ can reduce uptake of Cu(II) and As(III) by zebrafish and swamp cabbage. FZ can be separated conveniently from water and soil by a magnet.