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@article{2319037,
author = {Spiess, Sabine and Kučera, Jiří and Vaculovič, Tomáš and Birklbauer, Ludwig and Habermaier, Clemens and Conde, Amaia Sasiain and Mandl, Martin and Haberbauer, Marianne},
article_number = {August 2023},
doi = {http://dx.doi.org/10.3389/fmicb.2023.1238853},
keywords = {microbial electrolysis cell; metal recovery; zinc recovery; bioleaching; selective precipitation},
language = {eng},
issn = {1664-302X},
journal = {Frontiers in Microbiology},
title = {Zinc recovery from bioleachate using a microbial electrolysis cell and comparison with selective precipitation},
url = {https://doi.org/10.3389/fmicb.2023.1238853},
volume = {14},
year = {2023}
}
TY - JOUR
ID - 2319037
AU - Spiess, Sabine - Kučera, Jiří - Vaculovič, Tomáš - Birklbauer, Ludwig - Habermaier, Clemens - Conde, Amaia Sasiain - Mandl, Martin - Haberbauer, Marianne
PY - 2023
TI - Zinc recovery from bioleachate using a microbial electrolysis cell and comparison with selective precipitation
JF - Frontiers in Microbiology
VL - 14
IS - August 2023
SP - 1-11
EP - 1-11
PB - Frontiers Research Foundation
SN - 1664302X
KW - microbial electrolysis cell
KW - metal recovery
KW - zinc recovery
KW - bioleaching
KW - selective precipitation
UR - https://doi.org/10.3389/fmicb.2023.1238853
N2 - Metal recycling is essential for strengthening a circular economy. Microbial leaching (bioleaching) is an economical and environmentally friendly technology widely used to extract metals from insoluble ores or secondary resources such as dust, ashes, and slags. On the other hand, microbial electrolysis cells (MECs) would offer an energy-efficient application for recovering valuable metals from an aqueous solution. In this study, we investigated a MEC for Zn recovery from metal-laden bioleachate for the first time by applying a constant potential of -100mV vs. Ag/AgCl (3M NaCl) on a synthetic wastewater-treating bioanode. Zn was deposited onto the cathode surface with a recovery efficiency of 41 +/- 13% and an energy consumption of 2.55 kWh kg(-1). For comparison, Zn recovery from zinc sulfate solution resulted in a Zn recovery efficiency of 100 +/- 0% and an energy consumption of 0.70 kWh kg(-1). Furthermore, selective metal precipitation of the bioleachate was performed. Individual metals were almost completely precipitated from the bioleachate at pH 5 (Al), pH 7 (Zn and Fe), and pH 9 (Mg and Mn).
ER -
SPIESS, Sabine, Jiří KUČERA, Tomáš VACULOVIČ, Ludwig BIRKLBAUER, Clemens HABERMAIER, Amaia Sasiain CONDE, Martin MANDL a Marianne HABERBAUER. Zinc recovery from bioleachate using a microbial electrolysis cell and comparison with selective precipitation. \textit{Frontiers in Microbiology}. Frontiers Research Foundation, 2023, roč.~14, August 2023, s.~1-11. ISSN~1664-302X. Dostupné z: https://dx.doi.org/10.3389/fmicb.2023.1238853.
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