Recovery of Heavy Metals from the Spent Catalyst of the Hydrotreating Unit (HDT) for the Use of the Impregnation of Supported Catalysts

Toapanta Germania; Caterine Donoso; María José Cárdenas; Amón Bolívar; Vladimir Ortiz

doi:10.4028/www.scientific.net/KEM.792.133

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 792Recovery of Heavy Metals from the Spent Catalyst...

Recovery of Heavy Metals from the Spent Catalyst of the Hydrotreating Unit (HDT) for the Use of the Impregnation of Supported Catalysts

Abstract:

Spent catalysts contain metals that have a high added value. From all metals, lanthanum has attracted a lot of attention due to the growing demand in the high-tech. The spent catalyst of the hydrotreatment unit is a material composed of lanthanum-enriched matrix of amorphous aluminosilicates. The experiment was carried out with a spent catalyst with a constant particle size of 90 μm. The treatments were obtained applying of two level factorial design to investigate the effect of following factors: temperature (20 - 60 °C), nitric acid concentration (3 - 6 M), leaching time (1 - 4 h) and percent solids (10 - 20 %). The research is carried out in two steps process: pretreatment of the catalyst and leaching with nitric acid. The leaching results show a yield of lanthanum of 99.44% using the following conditions: temperature (20 °C), nitric acid concentration (3M), leaching time (1 h), percent solids (20%) and 300 rpm. The principal analysis of the spent catalyst was carried out using the X-Ray Fluorescence (XRF) technique, 3.08%, while the percentage of lanthanum recovery in the extract, washing and refining was carried out using the Inductive Coupling Plasma (ICP) technique.

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Periodical:

Key Engineering Materials (Volume 792)

Pages:

133-139

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.792.133

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Online since:

December 2018

Authors:

Toapanta Germania, Caterine Donoso*, María José Cárdenas, Amón Bolívar, Vladimir Ortiz

Keywords:

Hydrotreating, Lanthanum, Leaching, Nitric Acid, Pretreatment, Spent Catalyst

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References

[1] Information on: https://ihsmarkit.com/products/crude-petroleum-and-petroleum-chemical-economics-handbook.html.

Google Scholar

[2] T. Chiranjeevi, R. Pragya, S. Gupta, D. T. Gokak and S. Bhargava: Minimization of Waste Spent Catalyst in Refineries, Vol. 35 (2016) p.610.

DOI: 10.1016/j.proenv.2016.07.047

Google Scholar

[3] Z. Zhao, Z. Qiu, J. Yang, S. Lu, L. Cao, W. Zhang and Y Xu: Recovery of rare earth elements from spent fluid catalytic cracking catalysis using leaching and solvent extraction techniques, Vol. 167 (2017), p.183.

DOI: 10.1016/j.hydromet.2016.11.013

Google Scholar

[4] M. Walawalkar, C. Nichol and G. Asimi: Process investigation of the acid leaching of rare elements from phospogypsum using HCl, HNO3 and H2SO4, Vol. 166 (2016), p.195.

DOI: 10.1016/j.hydromet.2016.06.008

Google Scholar

[5] M. Marafi and A. Stanislaus: Waste Catalyst Utilization: Extraction of Valuable Metals from Spent Hydroprocessing Catalysts by Ultrasonic-Assisted Leaching with Acids, Vol. 50 (2011), p.9495.

DOI: 10.1021/ie200789u

Google Scholar

[6] A. Ferdowsi and H. Yoozbashizadeh: Process optimization and kinetics for leaching of cerium, lanthanum and neodymium elements from iron ore waste's apatite by nitric acid, Vol. 27 (2017), p.420.

DOI: 10.1016/s1003-6326(17)60048-7

Google Scholar

[7] S. Abhilash, P. Meshram and B. D. Pandey: Metallurgical processes for the recovery and recycling of lanthanum from various resources-A review, Vol. 160 (2016), p.47.

DOI: 10.1016/j.hydromet.2015.12.004

Google Scholar

[8] P. F. Ferreira, E.F Sèrvulo, A. C. da Costa, D. M. Ferreira, M. L. Godoy and F. s. Oliviera: Bioleaching of metals from a spent diesel hydrosulfurization catalyst employing Acidithiobacillus thiooxidans GF-01, Vol. 34 (2017), p.119.

DOI: 10.1590/0104-6632.20170341s20150208

Google Scholar

[9] Y. Sun, G. Fu and L. Jiang: Kinetic Study of the Leaching of Low-Grade Manganese Ores by Using Pretreated Sawdust as Reductant, Minerals, Vol. 7 (2017), p.3.

DOI: 10.3390/min7050083

Google Scholar

[10] Z. Zhao, M. Guo and M. Zhang: Extraction of molybdenum and vanadium from spent diesel exhaust catalyst by ammonia leaching method, J Hazard Mater, Vol. 286 (2015), p.402.

DOI: 10.1016/j.jhazmat.2014.12.063

Google Scholar

[11] F. Habashi: The recovery of the Lanthanides from phosphate rock, J Chem Tech Biotechnol, Vol. 35A (1985), p.5.

Google Scholar

[12] Information on: http://www.escapeartist.com/ecuador/work/the-oil-sector-in-ecuador.

Google Scholar

[13] Information on: https://probdes.iiec.unam.mx/en/revistas/v45n177/body/v45n177a5_1.php.

Google Scholar

[14] E. A. Mowafy and D. Mohamed: Extraction of rare earth elements from nitrate solution using novel unsymmetrical diglycolamide, Vol. 52 (2017). p.1006.

DOI: 10.1080/01496395.2016.1274760

Google Scholar