Open AccessOptimization of nitric acid properties for chemical recycling of cadmium from spent Ni-Cd batteries
Author(s) -
Mohamed Saleh,
Salim F. Bamsaoud,
H. M. Barfed
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1900/1/012018
Subject(s) - cadmium , nitric acid , nickel , sulfuric acid , diffractometer , atomic absorption spectroscopy , nuclear chemistry , chemistry , molar concentration , inorganic chemistry , scanning electron microscope , materials science , organic chemistry , physics , quantum mechanics , composite material
Cadmium is poisonous to living species even at low doses. In the cadmium-nickel battery industry, cadmium is commonly associated with nickel and cobalt. In this paper, the experimental results revealed that in recovering cadmium from spent nickel-cadmium batteries, sulfuric acid was much less potent than nitric acid. The effect of nitric acid quantity, molarity, temperature, and recovery time are studied to improve the process of recovering cadmium from spent Nickel-Cadmium batteries. The optimum values of nitric acid quantity, molarity, temperature, recovery time, and wasted material are 70 ml, 5 M, 70°C, 180 min, and 2g respectively. The recovered materials were investigated using an x-ray diffractometer (XRD), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDX). An atomic absorption spectrometer (AAS) was used to analyze the chemical composition of the leached samples.