Selective depression of Escherichia coli on flotation of collophanite and dolomite

• Autorzy: Li JiaXin , Nie GuangHua , Jiang Ying , Luo GuoJv , Li Jie

Identyfikatory

DOI

10.37190/ppmp/150604

• Języki publikacji: EN

Abstrakty

EN

The phosphate rock flotatio n test was carried out using Escherichia coli E. coli ) as a depressant of dolomite. The results showed that E. coli had a great selective depression on dolomite during flotation. With E. coli as a depressant of dolomite, a useful beneficiation index of phosphorus concentrate with P₂O₅ grade of more than 30% and MgO content less than 1.2% can be obtained by closed circuit of one stage roughing and one stage cleaning. Furthermore, the depression mechanism of E. coli was studied by ad sorption experiments, infrared spectrum, and zeta potential. This study shows that the adsorption ability of E. coli onto dolomite is stronger than that of collophanite. When the pH is greater than 6, E. coli are chemically adsorbed on the surface of the c ollophanite and dolomite,which also increases the negative charge on the surface of the two minerals. The selective adsorption of E. coli cells to dolomite was best when the pH value is about 7.8.

Słowa kluczowe

EN

Escherichia coli; collophanite; dolomite; flotation; phosphate rock

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2022
• Tom: Vol. 58, iss. 4
• Strony: art. no. 150604
• Opis fizyczny: Bibliogr. 35 poz., rys., wykr.

Twórcy

autor

Li JiaXin

• College of Mining, Guizhou University, Guiyang, 550025, China

autor

Nie GuangHua

• College of Mining, Guizhou University, Guiyang, 550025, China

autor

Jiang Ying

• Department of Road and Bridge Engineering, Guizhou Jiaotong College, Ganzhou Guiyang, 550025, China

autor

Luo GuoJv

• College of Mining, Guizhou University, Guiyang, 550025, China

autor

Li Jie

• College of Mining, Guizhou University, Guiyang, 550025, China

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).