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This study explores protein amyloid nanofibrils (AF) derived from whey, a dairy industry side\u2010stream, as a novel adsorbent for gold recovery from e\u2010waste. To do so, AF aerogels are prepared and assessed against gold adsorption capacity and selectivity over other metals present in waste electrical and electronic equipment (e\u2010waste). The results demonstrate that AF aerogel has a remarkable gold adsorption capacity (166.7\u00a0mg g<jats:sup>\u22121<\/jats:sup>) and selectivity, making it efficient and an adsorbent for gold recovery. Moreover, AF aerogels are efficient templates to convert gold ions into single crystalline flakes due to Au growth along the (111) plane. When used as templates to recover gold from e\u2010waste solutions obtained by dissolving computer motherboards in suitable solvents, the process yields high\u2010purity gold nuggets, constituted by \u224890.8\u00a0wt% gold (21\u201322 carats), with trace amounts of other metals. Life cycle assessment and techno\u2013economic analysis of the process finally consolidate the potential of protein nanofibril aerogels from food side\u2010streams as an environmentally friendly and economically viable approach for gold recovery from e\u2010waste.<\/jats:p>","DOI":"10.1002\/adma.202310642","type":"journal-article","created":{"date-parts":[[2024,1,23]],"date-time":"2024-01-23T19:30:00Z","timestamp":1706038200000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":88,"title":["Gold Recovery from E\u2010Waste by Food\u2010Waste Amyloid Aerogels"],"prefix":"10.1002","volume":"36","author":[{"given":"Mohammad","family":"Peydayesh","sequence":"first","affiliation":[{"name":"Department of Health Sciences and Technology ETH Zurich  Zurich 8092 Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Enrico","family":"Boschi","sequence":"additional","affiliation":[{"name":"Department of Health Sciences and Technology ETH Zurich  Zurich 8092 Switzerland"},{"name":"Laboratory for Cellulose &amp; Wood Materials Empa\u2010Swiss Federal Laboratories for Materials Science and Technology  D\u00fcbendorf 8600 Switzerland"},{"name":"Department of Plant and Environmental Sciences University of Copenhagen  Thorvaldsensvej 40 Frederiksberg C 1871 Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Felix","family":"Donat","sequence":"additional","affiliation":[{"name":"Department of Mechanical and Process Engineering ETH Z\u00fcrich  Leonhardstrasse 21 Z\u00fcrich CH\u20108092 Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5739-2610","authenticated-orcid":false,"given":"Raffaele","family":"Mezzenga","sequence":"additional","affiliation":[{"name":"Department of Health Sciences and Technology ETH Zurich  Zurich 8092 Switzerland"},{"name":"Department of Materials ETH Zurich  Zurich 8093 Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,1,29]]},"reference":[{"key":"e_1_2_7_1_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF03214833"},{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1748-0132(07)70116-0"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jmrt.2020.09.003"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1080\/09506608.2022.2156723"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jksus.2021.101560"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.nanolett.9b00472"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsnano.3c01489"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsami.0c08352"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1039\/C9TA12124B"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-022-32204-4"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.3390\/ma16030924"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cej.2021.131865"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.1038\/nnano.2015.310"},{"key":"e_1_2_7_13_2","doi-asserted-by":"publisher","DOI":"10.1021\/acs.langmuir.8b04234"},{"key":"e_1_2_7_13_3","doi-asserted-by":"publisher","DOI":"10.1039\/C9CC05337A"},{"key":"e_1_2_7_14_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-021-23388-2"},{"key":"e_1_2_7_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/B978-0-12-815749-7.00002-5"},{"key":"e_1_2_7_16_1","doi-asserted-by":"publisher","DOI":"10.1038\/natrevmats.2018.16"},{"key":"e_1_2_7_17_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.201505961"},{"key":"e_1_2_7_18_1","doi-asserted-by":"publisher","DOI":"10.1039\/C6CS00542J"},{"key":"e_1_2_7_18_2","doi-asserted-by":"publisher","DOI":"10.1021\/acssuschemeng.1c03937"},{"key":"e_1_2_7_19_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsami.3c10218"},{"key":"e_1_2_7_20_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.2c00236"},{"key":"e_1_2_7_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cis.2019.05.002"},{"key":"e_1_2_7_22_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.201907932"},{"key":"e_1_2_7_23_1","unstructured":"H.Motulsky GraphPad Software Inc. 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