Development of an Industrial Process for the Recovery of Palladium from Electroplating Waste Streams Using Polyelectrolyte-Functionalized Adsorbent Textiles
- 1Hansgrohe SE, Klaus-Grohe-Straße 5-9, 77761 Schiltach, Germany
- 2Deutsches Textilforschungszentrum Nord-West gGmbH (DTNW), Adlerstr. 1, 47798 Krefeld, Germany
Abstract
In electroplating processes, palladium makes plastic surfaces conductive for subsequent metal plating. During the production process, small amounts of this precious metal end up in the rinse water. Due to the very low palladium concentrations in the presence of significant amounts of interfering ions, recovering excess palladium from these waste streams using conventional methods is labour-intensive and expensive. An alternative is the use of polyelectrolyte-functionalized adsorbent textiles, which are capable of concentrating palladium from aqueous solutions. Through consistent further development of the associated process technology, it is now possible to selectively adsorb palladium from rinse water with very low concentrations—less than 1 mg/L—even in the presence of a high tin load of more than 200 mg/L, and to recover it. As a result, at our production facility in Germany, approximately 5 kg of palladium—currently with a material value of about $200,000—can be recovered annually from process water and returned to the raw material cycle. At the same time, compared to primary palladium production, this achieves a reduction potential of about 140 metric tons of CO2 equivalents per year. Our R&D work highlights the significant economic and environmental potential of closed-loop raw material cycles in industrial production processes. Furthermore, this approach offers prospects for additional applications in surface engineering and the recovery of critical raw materials.
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BibTeX
@article{werbeck2026development,
title = {{Development of an Industrial Process for the Recovery of Palladium from Electroplating Waste Streams Using Polyelectrolyte-Functionalized Adsorbent Textiles}},
author = {Tim Werbeck and David Zapf and Klaus Opwis},
journal = {Molecules},
year = {2026},
month = nov,
doi = {10.3390/molecules31214010},
url = {https://www.mdpi.com/1420-3049/31/21/4010},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Development of an Industrial Process for the Recovery of Palladium from Electroplating Waste Streams Using Polyelectrolyte-Functionalized Adsorbent Textiles
AU - Tim Werbeck
AU - David Zapf
AU - Klaus Opwis
PY - 2026
DA - 2026/11/06
JO - Molecules
DO - 10.3390/molecules31214010
UR - https://www.mdpi.com/1420-3049/31/21/4010
AB - In electroplating processes, palladium makes plastic surfaces conductive for subsequent metal plating. During the production process, small amounts of this precious metal end up in the rinse water. Due to the very low palladium concentrations in the presence of significant amounts of interfering ions, recovering excess palladium from these waste streams using conventional methods is labour-intensive and expensive. An alternative is the use of polyelectrolyte-functionalized adsorbent textiles, which are capable of concentrating palladium from aqueous solutions. Through consistent further development of the associated process technology, it is now possible to selectively adsorb palladium from rinse water with very low concentrations—less than 1 mg/L—even in the presence of a high tin load of more than 200 mg/L, and to recover it. As a result, at our production facility in Germany, approximately 5 kg of palladium—currently with a material value of about $200,000—can be recovered annually from process water and returned to the raw material cycle. At the same time, compared to primary palladium production, this achieves a reduction potential of about 140 metric tons of CO2 equivalents per year. Our R&D work highlights the significant economic and environmental potential of closed-loop raw material cycles in industrial production processes. Furthermore, this approach offers prospects for additional applications in surface engineering and the recovery of critical raw materials.
SN - 1420-3049
ER -