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Precious Nickel Recovery from Palm Oil Mill Fuel Ash Waste (NiPOMFAW) Using Acidic Leaching Extraction (ALE)

Said, N. and Ahmad Shahroom, Mohd Shah and Malar V., Sivaguru and Syafiqah , A. Khairuddin and Hajar Athirah, M. Sukri and Aina A., Rahman (2016) Precious Nickel Recovery from Palm Oil Mill Fuel Ash Waste (NiPOMFAW) Using Acidic Leaching Extraction (ALE). Key Engineering Materials, 705. pp. 374-379. ISSN 1013-9826 (print); 1662-9795 (online)

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Abstract

This paper demonstrates precious recovery of nickel from physical pre-treated raw palm oil mill fuel ash waste (POMFAW). The acidic leaching extraction (ALE) using sulphuric and hydrochloric acids agents were carried out in a bath stirrer flask. Process parameter effects of acid concentration, solution pH and treatment time were investigated in the nickel recuperation. The highest nickel recovery (96.83%) was found by treatment time of 1 h, pH of 2.5 and hydrochloric acid concentration of 2.0 M. At the acids leaching higher than 2 M, the nickel recovery decreased. Results from acids leaching imply that nickel complex can be formed at substantial percentages within the acid concentration higher than 1 M. The hydrochloric acid provides impressive nickel compared sulphuric acid, and the POMFAW can be proposed as a substitute of non-renewable sources derived nickel for a promising material and the used ALE can be considered as a beneficial technique.

Item Type: Article
Uncontrolled Keywords: Nickel recovery, POMFAW, ALE, Hydrochloric acid and Sulphuric acid
Subjects: T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 09 Nov 2016 01:29
Last Modified: 14 Dec 2017 03:23
URI: http://umpir.ump.edu.my/id/eprint/13120
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