Study on the adsorption of fluoride ion onto Vietnamese red mud activated with sulfuric acid

The work is devoted to the study of adsorption of F- ions on red mud, which is a waste of Vietnam's alumina plant. The red mud was previously activated with a solution of H2SO4 (2M) with a solid / liquid ratio of 1: 2. Investigation of adsorption at pH = 6.8; room temperature and adsorption tim...

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Published inIZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA
Main Authors Vu, Xuan Minh, Nguyen, Tan Dung, Nguyen, Vu Giang, Bui, Cong Trinh, Le, Thi Mai Huong
Format Journal Article
LanguageEnglish
Russian
Published 01.01.2019
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Abstract The work is devoted to the study of adsorption of F- ions on red mud, which is a waste of Vietnam's alumina plant. The red mud was previously activated with a solution of H2SO4 (2M) with a solid / liquid ratio of 1: 2. Investigation of adsorption at pH = 6.8; room temperature and adsorption time of 120 minutes showed that the maximum adsorption capacity of F- ions reached 9.4 mg / g. The kinetic regularities of the process are described by a second-order equation, the isotherm of the adsorption of F- ions is characterized by the equations of Langmuir and Freundlich. The test of the activated red mud  on real samples of wastewater containing fluoride ions showed that the quality of the water after treatment satisfies the permissible standard of Vietnam for industrial wastewater.
AbstractList The work is devoted to the study of adsorption of F- ions on red mud, which is a waste of Vietnam's alumina plant. The red mud was previously activated with a solution of H2SO4 (2M) with a solid / liquid ratio of 1: 2. Investigation of adsorption at pH = 6.8; room temperature and adsorption time of 120 minutes showed that the maximum adsorption capacity of F- ions reached 9.4 mg / g. The kinetic regularities of the process are described by a second-order equation, the isotherm of the adsorption of F- ions is characterized by the equations of Langmuir and Freundlich. The test of the activated red mud  on real samples of wastewater containing fluoride ions showed that the quality of the water after treatment satisfies the permissible standard of Vietnam for industrial wastewater.
Author Vu, Xuan Minh
Le, Thi Mai Huong
Nguyen, Vu Giang
Nguyen, Tan Dung
Bui, Cong Trinh
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  givenname: Vu Giang
  surname: Nguyen
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  givenname: Cong Trinh
  surname: Bui
  fullname: Bui, Cong Trinh
– sequence: 5
  givenname: Thi Mai Huong
  surname: Le
  fullname: Le, Thi Mai Huong
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