Journal
ISIJ INTERNATIONAL
Volume 47, Issue 4, Pages 558-562Publisher
IRON STEEL INST JAPAN KEIDANREN KAIKAN
DOI: 10.2355/isijinternational.47.558
Keywords
fluoride removal; phosphate removal; magnetic filter; wastewater treatment; Schwertmannite; nanomagnetite; electromagnetic processing of materials
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A new chemical adsorbent for fluoride and phosphate removals was produced by applying a novel nano-magnetite aggregation process through the formation procedure of an iron oxide hydroxide, i.e., schwertmannite. Although there was no evidence of magnetite related peaks in the XRD Pattern of the new adsorbent, because of the very small amount of the used magnetite particles, the SEM picture reveals a surface alteration on the crystal structure of the new adsorbent comparing to the schwertmannite. The results of magnetic removal of fluoride and phosphate using the new adsorbent indicate that nanomagnetite aggregation process not only improves the magnetic property, but also provides a highly-promoted fluoride and phosphate adsorption capacities comparing to the schwertmannite.
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