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La-containing magnetic zeolite synthesized from gangue by ball-milling method.
- Source :
-
Materials Letters . Nov2021, Vol. 303, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- [Display omitted] • Magnetic La-modified zeolite was synthesized by an energetic ball milling method. • The magnetic zeolite has a diameter of 200–800 nm with even La3+ distribution. • The P adsorption is up to 44.67 mg/g. • The magnetization is 25.6 emu/g, enforcing an efficient magnetic separation. • The P adsorption remains 79.30% of the original value after five cycles. Lanthanum-containing magnetic zeolite (LMZ) was fabricated from coal gangue by an energetic ball-milling method followed by hydrothermal process. Careful morphological, structural, and magnetic investigations show that the LMZ sample has a typical NaA zeolite structure with an diameter of 150–800 nm. La3+ ions and Fe 3 O 4 evenly distribute in the LMZ particles. LMZ has a S BET of 47.88 m2/g, more than 9 times larger than that of the precursor zeolite. The phosphorus adsorption of LMZ is 8 times higher than that of the precursor zeolite. The maximum phosphorus adsorption is tested as 44.64 mg/g, much higher than those of the reported lanthanum composite and zeolite. The specific magnetism of LMZ is measured as 25.6 emu/g and more than 99.6% LMZ particles can be magnetically separated from water efficiently. LMZ could be reused for tens of times after proper chemical treatment. The phosphorus adsorption mechanism is discussed. [ABSTRACT FROM AUTHOR]
- Subjects :
- *IRON oxides
*ZEOLITES
*MAGNETIC separation
Subjects
Details
- Language :
- English
- ISSN :
- 0167577X
- Volume :
- 303
- Database :
- Academic Search Index
- Journal :
- Materials Letters
- Publication Type :
- Academic Journal
- Accession number :
- 151951852
- Full Text :
- https://doi.org/10.1016/j.matlet.2021.130542