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Bài báo - Tạp chí
90 (2015) Trang: 388-396
Tạp chí: Journal of Cleaner Production

In order to recover molybdenum and cobalt from spent hydrodesulphurization (HDS) catalysts, a hydrometallurgical process consisting of leaching, solvent extraction and precipitation was developed. The Mo and Co in the spent HDS catalysts were leached in HCl solution. Mo was first separated by solvent extraction with TBP and the Mo free raffinate was then contacted with TEHA to separate Co. Stripping of Mo and Co from the loaded organic phases was carried out using dilute HCl solution and distilled water. The extraction and stripping isotherms were constructed to get the required number of multi-stages. 99.8% of Mo and 99.4% of Co were recovered by solvent extraction and the purity of Mo and Co stripping solutions was found to be 99.99%. CaMoO4 powders with uniform morphology were obtained by adding calcium chloride to the Mo stripping solution at pH 5.0 and 90 °C. The optimum conditions for the formation of uniform rod-like CoC2O4 particles by adding oxalic acid were at pH 5.0 and 60 °C. The overall recovery of Mo and Co from spent HDS catalyst was 96% and 93%.

Các bài báo khác
Vol. 54, No. 8 (2018) Trang: 81-87
Tải về
27 (2018) Trang: 78-85
Tạp chí: Journal of the Korean Institute of Resources Recycling
39 (2018) Trang: 1-17
Tạp chí: Mineral Processing and Extractive Metallurgy Review
39 (2018) Trang: 1-6
Tạp chí: Mineral Processing and Extractive Metallurgy Review
39 (2018) Trang: 1-14
Tạp chí: Mineral Processing and Extractive Metallurgy Review
31 (2015) Trang: 118-123
Tạp chí: Journal of Industrial and Engineering Chemistry
53 (2014) Trang: 8608-8614
Tạp chí: Industrial & Engineering Chemistry Research
52 (2014) Trang: 799-803
Tạp chí: Korean Journal Of Metals And Materials

Crossref DOI of CTUJoS

BC thường niên 2018

Con số ấn tượng (VN | EN)

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