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dc.contributor.authorLahtinen, Elmeri
dc.date.accessioned2019-12-04T07:22:35Z
dc.date.available2019-12-04T07:22:35Z
dc.date.issued2019
dc.identifier.isbn978-951-39-7994-2
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/66626
dc.description.abstractGrowing interest towards making industrial processes and waste management more efficient has created an increasing demand for efficient and easy-to-use metal scavenging methods. Many processes today still operate with the mentality that only the metal of interest should be recovered during the process, while the rest of the metals can be treated as waste. In the long term, this is not a sustainable model. In many cases, the difficulty and cost of incorporating a metal recovery process into an already existing operation are some of the main reasons why metal management often remains on a very basic level. In this work, Selective Laser Sintering (SLS) 3D printing is suggested as a way to prepare highly customizable metal scavenging filters that could easily be incorporated into already existing processes. Usually, 3D printing is only utilized for the production of objects with mere mechanical or aesthetical properties. However, in this study, the focus was on incorporating chemical functionality into the 3D printed objects. The 3D printing method was evaluated in terms of the usability for metal scavenging processes by studying the ability to alter both the chemical and physical properties of the SLS 3D printed objects. In the introduction section of the thesis, typical metal separation techniques, with a focus on sorption, are discussed and then compared with the advantages and disadvantages of the SLS 3D printed metal scavenging filters. In the original publications discussed in this thesis, different types of chemically functional SLS 3D printed filters are presented. First, a highly selective method for scavenging gold as tetrachloroaurate from acid leached Printed Circuit Board (PCB) waste was developed. The method utilized SLS 3D printed Polyamide-12 (PA12) filters which achieved nearly quantitative selectivity towards tetrachloroaurate. This was followed by a study where a method for separating palladium and platinum from a similar matrix by using SLS 3D printed filter was developed. Finally, a different approach was taken, where the SLS 3D printed PA12 filters were converted to functional nanocatalysts by first selectively adsorbing the gold from PCB waste and then reducing it into nanoparticles.en
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherJyväskylän yliopisto
dc.relation.ispartofseriesJYU dissertations
dc.relation.haspart<b>Artikkeli I:</b> Lahtinen, E., Kivijärvi, L., Tatikonda, R., Väisänen, A., Rissanen, K., & Haukka, M. (2017). Selective recovery of gold from electronic waste using 3D-printed scavenger. <i>ACS Omega, 2 (10), 7299-7304.</i> <a href="https://doi.org/10.1021/acsomega.7b01215"target="_blank"> DOI: 10.1021/acsomega.7b01215</a>
dc.relation.haspart<b>Artikkeli II:</b> Lahtinen, Elmeri; Hänninen, Mikko M.; Kinnunen, Kimmo; Tuononen, Heikki; Väisänen, Ari; Rissanen, Kari; Haukka, Matti (2018). Porous 3D Printed Scavenger Filters for Selective Recovery of Precious Metals from Electronic Waste. <i>Advanced Sustainable Systems, 2 (10), 1800048.</i> <a href="https://doi.org/10.1002/adsu.201800048"target="_blank"> DOI: 10.1002/adsu.201800048</a>
dc.relation.haspart<b>Artikkeli III:</b> Lahtinen, Elmeri; Kukkonen, Esa; Kinnunen, Virva; Lahtinen, Manu; Kinnunen, Kimmo; Suvanto, Sari; Väisänen, Ari; Haukka, Matti (2019). Gold Nanoparticles on 3D-Printed Filters : From Waste to Catalysts. <i>ACS Omega, 4 (16), 16891-16898.</i> <a href="https://doi.org/10.1021/acsomega.9b02113"target="_blank"> DOI: 10.1021/acsomega.9b02113</a>
dc.rightsIn Copyright
dc.subjecttalteenotto
dc.subjectjalometallit
dc.subjectsähkö- ja elektroniikkaromu
dc.subjectjätteiden hyötykäyttö
dc.subjectkierrätys
dc.subjectmetallit
dc.subjecterotusmenetelmät
dc.subjectkiertotalous
dc.subjectsuodattimet
dc.subject3D-tulostus
dc.subjectlasertekniikka
dc.subjecttoiminnalliset materiaalit
dc.subjectpolyamidi
dc.subjectkemialliset ominaisuudet
dc.subjectmetal separation
dc.subjectselective laser sintering
dc.subject3D printing
dc.subjectcircular economy
dc.subjectnoble metals
dc.titleChemically Functional 3D Printing : Selective Laser Sintering of Customizable Metal Scavengers
dc.typeDiss.
dc.identifier.urnURN:ISBN:978-951-39-7994-2
dc.relation.issn2489-9003
dc.rights.copyright© The Author & University of Jyväskylä
dc.rights.accesslevelopenAccess
dc.type.publicationdoctoralThesis
dc.format.contentfulltext
dc.rights.urlhttp://rightsstatements.org/page/InC/1.0/?language=en
dc.date.digitised


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