Removal of Sb(III) and Sb(V) by Ferric Chloride Coagulation: Implications of Fe Solubility
- Title
- Removal of Sb(III) and Sb(V) by Ferric Chloride Coagulation: Implications of Fe Solubility
- Author
- 이용우
- Keywords
- antimonite; antimonate; antimony removal; coagulation; Fe precipitates; water treatment
- Issue Date
- 2018-04
- Publisher
- MDPI AG
- Citation
- WATER, v. 10, No. 4, Artricle no. 418
- Abstract
- Coagulation and precipitation appear to be the most efficient and economical methods for
the removal of antimony from aqueous solution. In this study, antimony removal from synthetic
water and Fe solubility with ferric chloride (FC) coagulation has been investigated. The effects of
pH, FC dosage, initial antimony loading and mixed Sb(III), Sb(V) proportions on Fe solubility and
antimony removal were studied. The results showed that the Sb(III) removal efficiency increased
with the increase of solution pH particularly due to an increase in Fe precipitation. The Sb(V) removal
was influenced by the solution pH due to a change in Fe solubility. However, the Fe solubility was
only impaired by the Sb(III) species at optimum pH 7. The removal efficiencies of both Sb species
were enhanced with an increase in FC dose. The quantitative analysis of the isotherm study revealed
the strong adsorption potential of Sb(III) on Fe precipitates as compared to Sb(V). Furthermore,
the removal behavior of antimony was inhibited in mixed proportion with high Sb(V) fraction.
In conclusion, this study contributes to better understanding the fate of Sb species, their mobilities,
and comparative removal behavior, with implications for Fe solubility using ferric chloride in different
aqueous environments.
- URI
- https://www.mdpi.com/2073-4441/10/4/418/htmhttps://repository.hanyang.ac.kr/handle/20.500.11754/81003
- ISSN
- 2073-4441
- DOI
- 10.3390/w10040418
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > CHEMICAL AND MOLECULAR ENGINEERING(화학분자공학과) > Articles
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