Investigating critical parameters for bioremoval of heavy metals from computer printed circuit boards using the fungus Aspergillus niger
M Arshadi, A Esmaeili, S Yaghmaei - Hydrometallurgy, 2020 - Elsevier
In this article, bioleaching of computer printed circuit boards (CPCBs) was examined using
Aspergillus niger with one-step, two-step, and spent-medium bioleaching methods. Four
effective parameters were optimized using response surface methodology (RSM) to achieve
maximum recovery of Cu and Ni. Under optimal conditions–pH of 5.15, pulp density of 10 g/l,
1E+ 007 spores of A. niger, and 4.5 days for the sample adding time− 97% and 74% of Cu
and Ni were recovered, respectively. Two-step bioleaching and spent medium bioleaching …
Aspergillus niger with one-step, two-step, and spent-medium bioleaching methods. Four
effective parameters were optimized using response surface methodology (RSM) to achieve
maximum recovery of Cu and Ni. Under optimal conditions–pH of 5.15, pulp density of 10 g/l,
1E+ 007 spores of A. niger, and 4.5 days for the sample adding time− 97% and 74% of Cu
and Ni were recovered, respectively. Two-step bioleaching and spent medium bioleaching …
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