1. Fabrication of Fe3O4/ZIF-8 nanocomposite for simultaneous removal of copper and arsenic from water/soil/swine urine
- Author
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Cheng Peng, Dongfang Wang, Dongqing Cai, Qingchuan Wu, Chaowen Chen, and Zhengyan Wu
- Subjects
Environmental Engineering ,Soil test ,Coprecipitation ,Swine ,0208 environmental biotechnology ,chemistry.chemical_element ,02 engineering and technology ,010501 environmental sciences ,Management, Monitoring, Policy and Law ,01 natural sciences ,Arsenic ,Nanocomposites ,chemistry.chemical_compound ,Soil ,Adsorption ,Imidazolate ,Animals ,Waste Management and Disposal ,Zebrafish ,0105 earth and related environmental sciences ,Aqueous solution ,Nanocomposite ,Water ,General Medicine ,Hydrogen-Ion Concentration ,Copper ,020801 environmental engineering ,Kinetics ,chemistry ,Zeolites ,Water Pollutants, Chemical ,Nuclear chemistry - Abstract
In this study, a magnetic nanocomposite (denoted as FZ) was fabricated using Fe3O4 and zeolitic imidazolate framework-8 (ZIF-8), based on a coprecipitation method. FZ could efficiently remove Cu2+ (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.
- Published
- 2021