Extraction of platinum at high phase ratio via a rotating packed bed integrated with falling film

Zhu, Yu-Gan; Fei, Xiao-Feng; Li, Yan-Bin; Sun, Bao-Chang; Chu, Guang-Wen; Chen, Jian-Feng

doi:10.1016/j.seppur.2023.125918

Separation and Purification Technology

2024

DOI: 10.1016/j.seppur.2023.125918

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Extraction of platinum at high phase ratio via a rotating packed bed integrated with falling film

Yu-Gan Zhu,

Xiao-Feng Fei,

Yan-Bin Li

et al.

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2024

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Cited by 2 publications

References 41 publications

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Liquid–Liquid Heterogeneous Mixing Characteristics in a Submerged Rotating Packed Bed

Duan,

Yang,

et al. 2024

Ind. Eng. Chem. Res.

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The involvement of liquid−liquid heterogeneous intensification in chemical processes is indispensable due to the presence of phase interfaces that impose limitations on mixing efficiency. Herein, a submerged rotating packed bed (SRPB) was developed to intensify liquid−liquid heterogeneous mixing under a dramatic centrifugal environment. The packing was submerged in continuous liquid to potentially match the heat-sensitive reaction systems. The liquid−liquid heterogeneous dispersion phenomena were photographed using a microscope, and the heterogeneous mixing efficiency was investigated using a sodium hydroxide and aspirin system as the chemical probe. As rotational speed was increased from 300 to 1500 r/min, the Sauter mean diameter of the aqueous phase was remarkably reduced from 110.65 to 19.57 μm, proving that SRPB could effectively disperse the liquid−liquid heterogeneous reaction system. Benefiting from the rotating packing, the segregation index (X S ) and micromixing time (t m ) respectively decreased in the range of 0.33−0.11 and 3.98−1.36 ms, indicating that the mixing efficiency was significantly enhanced under the centrifugal field of SRPB. The increase in the total volume flow rate reduced X S and t m , which could stem from the enlarged heterogeneous interfaces by forming multiple composite droplets at large volume flow rates. Compared with conventional RPB, the X S of SRPB (0.09−0.35) was slightly lower than that of RPB (0.1−0.4), and the t m of SRPB (1.36−3.98) was remarkably lower than that of RPB (1−10), proving the superiority of SPRB in promoting heterogeneous mixing.

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Liquid–Liquid Heterogeneous Mixing Characteristics in a Submerged Rotating Packed Bed

Duan,

Yang,

et al. 2024

Ind. Eng. Chem. Res.

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Higee-intensified process reengineering in fine chemistry industry: principle and case studies

Chu,

Xu,

Luo

et al. 2024

Sci. Sin.-Chim

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Extraction of platinum at high phase ratio via a rotating packed bed integrated with falling film

Cited by 2 publications

References 41 publications

Liquid–Liquid Heterogeneous Mixing Characteristics in a Submerged Rotating Packed Bed

Liquid–Liquid Heterogeneous Mixing Characteristics in a Submerged Rotating Packed Bed

Higee-intensified process reengineering in fine chemistry industry: principle and case studies

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