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Competitive effect of copper and nickel recovery with carbonate in the fluidized-bed homogeneous granulation process

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Abstract

With the rapid growth of the world’s informatics innovation, printed circuit boards (PCBs) processing produces wastewaters with copper and nickel ions. This study aims to remove and recover copper and nickel ions from synthetic PCB wastewater using a fluidized-bed homogeneous granulation process (FBHGP). FBHGP is an advanced green technology that removes copper and nickel and transforms the sludge into a hard granule. The impacts on the removal and granulation of copper and nickel of the initial operating pH, molar ratio (MR) of precipitant to metal, and precipitant flow rate have been evaluated. The highest copper removal was attained at 97% at pH of 6.5 and 98% copper removal at an MR of 2.0 and 10 mL·min-1. A 93% copper granulation was achieved at the same pH, while a 94% copper granulation was also achieved at the same MR and precipitant flow rate. At a pH of 7.5, 85% nickel removal and 74% granulation were attained for a nickel. At an MR of 1.75, 82% and 74% were the highest removal and granulation. While at 25 mL·min-1, the highest removal was 83%, and 73% nickel granulation was achieved. Copper has been successfully recovered from synthetic PCB wastewater using FBHGP. At the same time, nickel needs a multi-step FBR, which is more suitable for the recovery of nickel under the same conditions applied during the same period.

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Acknowledgment

The Ministry of Science and Technology, Taiwan, made this work possible under the Contract Number: MOST 107-2221-E-005 -081 -MY3.

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All data generated or analyzed during this study are included in this published article.

Funding

The Ministry of Science and Technology financially sponsored the study design and the compilation, review, and interpretation of data, Taiwan (Contract No. MOST- 107-2221-E-005 -081 -MY3),

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Contributions

NEQ, MDGDL, and MCL performed the conceptualization of nickel and copper recovery using synthetic wastewater. NEQ, MDGDL, and MCL prepared the methodology to be followed in this research. NEQ performed the investigation, and MDGDL supervised this study. MCL and MDGDL provided the financial funding resources. The data curation was done by NEQ, ACV, MDGDL, and MCL. NEQ, ACV, and MDGDL conducted the validation of the results. Writing the original draft was done by NEQ and ACV. Writing, review and editing, was performed by MDGDL and ACV. All authors read and approved the final manuscript.

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Correspondence to Ming-Chun Lu.

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The authors declare that they have no competing interests.

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Responsible Editor: Ta Yeong Wu

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Quimada, N.E., De Luna, M.D.G., Vilando, A.C. et al. Competitive effect of copper and nickel recovery with carbonate in the fluidized-bed homogeneous granulation process. Environ Sci Pollut Res 29, 12414–12426 (2022). https://doi.org/10.1007/s11356-021-14733-5

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  • DOI: https://doi.org/10.1007/s11356-021-14733-5

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