Nanostructured NiO derived from spent nickel catalyst as an efficient photocatalyst: Characterization, performance, and kinetic study

Yudha, Cornelius Satria; Putro, Firman Asto; , Haryadi; Paramitha, Tika; Paramitha, Tifa; Jumari, Arif

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DOI: https://doi.org/10.4491/eer.2024.433

Nanostructured NiO derived from spent nickel catalyst as an efficient photocatalyst: Characterization, performance, and kinetic study

Cornelius Satria Yudha^1,2^†, Firman Asto Putro¹, Haryadi ³, Tika Paramitha^2,4, Tifa Paramitha³, and Arif Jumari^2,4

¹Chemical Engineering Department, Vocational School, Universitas Sebelas Maret, Jl. Kolonel Sutarto 150K Surakarta 57126, Indonesia
²Centre of Excellence for Electrical Energy Storage Technology, Universitas Sebelas Maret, Jl. Slamet Riyadi 435 Surakarta 57146, Indonesia
³Department of Chemical Engineering, Politeknik Negeri Bandung, Jl. Gegerkalong Hilir, Ds. Ciwaruga, Bandung 40559, Indonesia
⁴Chemical Engineering Department, Faculty of Engineering, Universitas Sebelas Maret, Jl. Ir. Sutami 36A, Surakarta 57126, Indonesia

Corresponding Author: Cornelius Satria Yudha ,Tel: +62271 646994 , Fax: +62271 646655 , Email: corneliussyudha@staff.uns.ac.id

Received: July 14, 2024; Accepted: October 9, 2024.

ABSTRACT

This study aimed to recover and regenerate nanostructured nickel oxide (NiO) from a spent nickel catalyst (SNC) using the simple and economical hydrometallurgical method. The experiment was carried out by exploring Ni leaching kinetic models, such as the shrinking-core model (SCM), logarithmic rate law, and the Avrami model. HCl was used as a lixiviant, achieving a high 99% Ni leaching efficiency (LE) at a solid/liquid ratio of 100 g/L and temperature of 70℃. The suitable mechanism for the Ni leaching from SNC using HCl solution is the Avrami model. The nanostructured NiO was successfully obtained by precipitation and sintering. Furthermore, XRD, SEM-EDX, TEM, Raman spectroscopy, and surface area analysis confirmed the formation of SNC-derived nanostructured-NiO (NiO-Cat) with needle-like nanosized particle size and a surface area of 77.2 m2/g. The NiO-Cat was examined for UV-irradiated photo-Fenton-like degradation activity on synthetic cationic and anionic dyes, including rhodamine B (RhB), methylene blue (MB), acid orange 7 (AO7), and methyl orange (MO), which showed degradation efficiency of 96%, 98%, 93%, and 83%, respectively, after 120 min of reaction. The overall process is economically and environmentally attractive. Meanwhile, the leaching and photocatalysis data can be further developed in the industry for equipment design.