Platinum metal recovery from spent CCR platforming catalyst with microwave-assisted digestion method

Luh Putu Devina Ichasia Prawira, Yuliusman, Khairina Shauma, Azmia Rizka Nafisah, Maretha Putri Ayu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Rapid industrial development uses the catalyst in response to reaction speed in a process. The process uses catalysts in the oil and gas industry is Continuous Catalytic Cracking Platforming, in which the process produces Pt/Al2O3 catalyst waste approximately 2000-3000 kg/year. Recovery of platinum metal is needed to save the cost of purchasing platinum catalysts because platinum is very costly and it is categorized as hazardous and toxic material waste. The method used for platinum recovery is microwave-assisted digestion method. With this method, the Pt/Al2O3 spent catalyst is treated in an isolated, high-temperature, and high-pressure vessel. Platinum metal is one of the precious metals in which it is relatively inactive even to mineral acid. This metal can only be readily dissolved in aqua regia with high-temperature and high-pressure condition. This experiment is used to find out the digestion parameters effect (temperature, solid/liquid ratio, and contact time) and to see if the spent catalyst can be destructed perfectly with its various condition. The highest percentage of platinum recovery achieved is 94.06% with 0.1 gram of spent catalyst used at 220°C. For the kinetic study, surface chemical reaction is the most suitable kinetic model for digestion and has an activation energy value of 13.35 kCal/mol.

Original languageEnglish
Title of host publication4th International Tropical Renewable Energy Conference, i-TREC 2019
EditorsEny Kusrini, I. Gde Dharma Nugraha
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735420144
DOIs
Publication statusPublished - 3 Sep 2020
Event4th International Tropical Renewable Energy Conference 2019, i-TREC 2019 - Bali, Indonesia
Duration: 14 Aug 201916 Aug 2019

Publication series

NameAIP Conference Proceedings
Volume2255
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference4th International Tropical Renewable Energy Conference 2019, i-TREC 2019
CountryIndonesia
CityBali
Period14/08/1916/08/19

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