Mufakir, Fika Rofiek
Prosiding Seminar Nasional Teknik Kimia "Kejuangan"

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Valuable Metals Extraction From Hydrocracking Spent Catalyst Using Citric Acid Sari, Dewi Purnama; Tawfiequrahman, Ahmad; Petrus, Himawan Tri Bayu Murti; Mufakir, Fika Rofiek; Astuti, Widi; Iskandar, Y; Bratakusuma, D
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2018: PROSIDING SNTKK 2018
Publisher : Prosiding Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Hydrocracking spent catalyst is a hazardous residue produced in large quantities in petroleum refining industries, it contains non metals or metals  which are important components for advanced material. Leaching is a hydrometallurgical process which is an effective technology for metal extraction from low grade metal sources with appropriate solvent, low processing cost and relatively low pollutant. The waluable metals extraction was conducted using both organic and anorganic acids. Temperature (90 ̊C) and pH (1,5, 2) were varied to observed the performance of both acid with solid ratio of 1:20 in the atmosphere condition. Sample were analice using x-ray flourescence (XRF) before exraction and after extraction. From the result, it can be conducted which citric acid process ability to extract valuable metals as high as organic acid. 
Pelindian Nikel dari Bijih LimonitLow-Grade Pomalaa Menggunakan Pelarut Asam Asetat Eka Ayu Agustina, Himmah Sekar; Bendiyasa, I MAde; Petrus, Himawan Tri Bayu Murti; Mufakir, Fika Rofiek; Astuti, Widi
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2018: PROSIDING SNTKK 2018
Publisher : Prosiding Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Nickel is a strategic metal in many modern industrial and metallurgical application. Indonesia processes nickel laterite ore of about 15% of total world reserves. This research work deals with the extraction of nickel from a low grade limonitic ore, taken from a deposit located in Pomalaa (Sulawesi), through agitation leaching at atmospheric pressure. Ore characterisation was performed by x-ray diffraction (XRD) and x-ray fluorescence (XRF). Showing that 2,651% nickel that geothite are the main mineral. The metal extraction from low-grade limonitic ore is affected by the mineralization of the ore in addition operating condition are also varied in this study including temperature (30oC,60oC,90oC), acid concentration (25%,50%,75%) and particle size (-70+100 mesh, -100+200 mesh, -200 mesh) to investigated the leaching performance. In comparison to that of inorganic acid (HCl) used in this study, acetic acid provide a potential to be applied in the extraction of metals from low grade limonitic ore.