Recovery of materials from waste printed circuit boards by vacuum pyrolysis and vacuum centrifugal separation
In this research, a two-step process consisting of vacuum pyrolysis and vacuum centrifugal separation was employed to treat waste printed circuit boards (WPCBs). Firstly, WPCBs were pyrolysed under vacuum condition at 600 °C for 30 min in a lab-scale reactor. Then, the obtained pyrolysis residue was...
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| Veröffentlicht in: | Waste management (Elmsford) 2010-11, Vol.30 (11), p.2299-2304 |
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| creator | Zhou, Yihui Wu, Wenbiao Qiu, Keqiang |
| description | In this research, a two-step process consisting of vacuum pyrolysis and vacuum centrifugal separation was employed to treat waste printed circuit boards (WPCBs). Firstly, WPCBs were pyrolysed under vacuum condition at 600
°C for 30
min in a lab-scale reactor. Then, the obtained pyrolysis residue was heated under vacuum until the solder was melted, and then the molten solder was separated from the pyrolysis residue by the centrifugal force. The results of vacuum pyrolysis showed that the type-A of WPCBs (the base plates of which was made from cellulose paper reinforced phenolic resin) pyrolysed to form an average of 67.97 wt.% residue, 27.73 wt.% oil, and 4.30 wt.% gas; and pyrolysis of the type-B of WPCBs (the base plates of which was made from glass fiber reinforced epoxy resin) led to an average mass balance of 72.20 wt.% residue, 21.45 wt.% oil, and 6.35 wt.% gas. The results of vacuum centrifugal separation showed that the separation of solder was complete when the pyrolysis residue was heated at 400
°C, and the rotating drum was rotated at 1200
rpm for 10
min. The pyrolysis oil and gas can be used as fuel or chemical feedstock after treatment. The pyrolysis residue after solder separation contained various metals, glass fibers and other inorganic materials, which could be recycled for further processing. The recovered solder can be reused directly and it can also be a good resource of lead and tin for refining. |
| doi_str_mv | 10.1016/j.wasman.2010.06.012 |
| format | Article |
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°C for 30
min in a lab-scale reactor. Then, the obtained pyrolysis residue was heated under vacuum until the solder was melted, and then the molten solder was separated from the pyrolysis residue by the centrifugal force. The results of vacuum pyrolysis showed that the type-A of WPCBs (the base plates of which was made from cellulose paper reinforced phenolic resin) pyrolysed to form an average of 67.97 wt.% residue, 27.73 wt.% oil, and 4.30 wt.% gas; and pyrolysis of the type-B of WPCBs (the base plates of which was made from glass fiber reinforced epoxy resin) led to an average mass balance of 72.20 wt.% residue, 21.45 wt.% oil, and 6.35 wt.% gas. The results of vacuum centrifugal separation showed that the separation of solder was complete when the pyrolysis residue was heated at 400
°C, and the rotating drum was rotated at 1200
rpm for 10
min. The pyrolysis oil and gas can be used as fuel or chemical feedstock after treatment. The pyrolysis residue after solder separation contained various metals, glass fibers and other inorganic materials, which could be recycled for further processing. The recovered solder can be reused directly and it can also be a good resource of lead and tin for refining.</description><identifier>ISSN: 0956-053X</identifier><identifier>EISSN: 1879-2456</identifier><identifier>DOI: 10.1016/j.wasman.2010.06.012</identifier><identifier>PMID: 20655190</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Applied sciences ; Boards ; Centrifugation - methods ; Computers ; Electronics ; Equipment Design ; Exact sciences and technology ; Manufactured Materials ; Materials Testing ; Natural gas ; Other wastes and particular components of wastes ; Phenols - chemistry ; Plates ; Pollution ; Printed circuits ; Pyrolysis ; Recycling - methods ; Refuse Disposal - methods ; Residues ; Separation ; Solders ; Temperature ; Time Factors ; Vacuum ; Waste Management - methods ; Wastes</subject><ispartof>Waste management (Elmsford), 2010-11, Vol.30 (11), p.2299-2304</ispartof><rights>2010 Elsevier Ltd</rights><rights>2015 INIST-CNRS</rights><rights>Copyright © 2010 Elsevier Ltd. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c456t-c205f4ef44d4579d723872f5da181ce683a007b36f7ecbc46c0cc7adbc1ad1ca3</citedby><cites>FETCH-LOGICAL-c456t-c205f4ef44d4579d723872f5da181ce683a007b36f7ecbc46c0cc7adbc1ad1ca3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.wasman.2010.06.012$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=23346183$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20655190$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Zhou, Yihui</creatorcontrib><creatorcontrib>Wu, Wenbiao</creatorcontrib><creatorcontrib>Qiu, Keqiang</creatorcontrib><title>Recovery of materials from waste printed circuit boards by vacuum pyrolysis and vacuum centrifugal separation</title><title>Waste management (Elmsford)</title><addtitle>Waste Manag</addtitle><description>In this research, a two-step process consisting of vacuum pyrolysis and vacuum centrifugal separation was employed to treat waste printed circuit boards (WPCBs). Firstly, WPCBs were pyrolysed under vacuum condition at 600
°C for 30
min in a lab-scale reactor. Then, the obtained pyrolysis residue was heated under vacuum until the solder was melted, and then the molten solder was separated from the pyrolysis residue by the centrifugal force. The results of vacuum pyrolysis showed that the type-A of WPCBs (the base plates of which was made from cellulose paper reinforced phenolic resin) pyrolysed to form an average of 67.97 wt.% residue, 27.73 wt.% oil, and 4.30 wt.% gas; and pyrolysis of the type-B of WPCBs (the base plates of which was made from glass fiber reinforced epoxy resin) led to an average mass balance of 72.20 wt.% residue, 21.45 wt.% oil, and 6.35 wt.% gas. The results of vacuum centrifugal separation showed that the separation of solder was complete when the pyrolysis residue was heated at 400
°C, and the rotating drum was rotated at 1200
rpm for 10
min. The pyrolysis oil and gas can be used as fuel or chemical feedstock after treatment. The pyrolysis residue after solder separation contained various metals, glass fibers and other inorganic materials, which could be recycled for further processing. The recovered solder can be reused directly and it can also be a good resource of lead and tin for refining.</description><subject>Applied sciences</subject><subject>Boards</subject><subject>Centrifugation - methods</subject><subject>Computers</subject><subject>Electronics</subject><subject>Equipment Design</subject><subject>Exact sciences and technology</subject><subject>Manufactured Materials</subject><subject>Materials Testing</subject><subject>Natural gas</subject><subject>Other wastes and particular components of wastes</subject><subject>Phenols - chemistry</subject><subject>Plates</subject><subject>Pollution</subject><subject>Printed circuits</subject><subject>Pyrolysis</subject><subject>Recycling - methods</subject><subject>Refuse Disposal - methods</subject><subject>Residues</subject><subject>Separation</subject><subject>Solders</subject><subject>Temperature</subject><subject>Time Factors</subject><subject>Vacuum</subject><subject>Waste Management - methods</subject><subject>Wastes</subject><issn>0956-053X</issn><issn>1879-2456</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkU2LFDEQhoMo7rj6D0RyEb30mKTz0XMRZPELFgRR8BbSlYpk6O6MSfdI_3szzKze1lNB8dRbRT2EPOdsyxnXb_bb366MbtoKVltMbxkXD8iGd2bXCKn0Q7JhO6UbptofV-RJKXvGuOw4e0yuBNNK8R3bkPErQjpiXmkKdHQz5uiGQkNOI635M9JDjtOMnkLMsMSZ9sllX2i_0qODZRnpYc1pWEss1E3-rgk4zTmG5acbaMGDy26OaXpKHoUaj88u9Zp8__D-282n5vbLx883724bqIfPDQimgsQgpZfK7LwRbWdEUN7xjgPqrnWMmb7VwSD0IDUwAON8D9x5Dq69Jq_OuYecfi1YZjvGAjgMbsK0FNsppTvRafFf0igjtWRyV8nX95LcGMOFkuqEyjMKOZWSMdj6xNHl1XJmT_Ls3p7l2ZM8y7St8urYi8uGpR_R_x26s1WBlxfAFXBDyG6CWP5xbSs179rKvT1zWH98jJhtgYgToI8ZYbY-xfsv-QMc77wN</recordid><startdate>20101101</startdate><enddate>20101101</enddate><creator>Zhou, Yihui</creator><creator>Wu, Wenbiao</creator><creator>Qiu, Keqiang</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SU</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope><scope>7X8</scope><scope>7ST</scope><scope>7TV</scope><scope>7U6</scope><scope>SOI</scope></search><sort><creationdate>20101101</creationdate><title>Recovery of materials from waste printed circuit boards by vacuum pyrolysis and vacuum centrifugal separation</title><author>Zhou, Yihui ; Wu, Wenbiao ; Qiu, Keqiang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c456t-c205f4ef44d4579d723872f5da181ce683a007b36f7ecbc46c0cc7adbc1ad1ca3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Applied sciences</topic><topic>Boards</topic><topic>Centrifugation - methods</topic><topic>Computers</topic><topic>Electronics</topic><topic>Equipment Design</topic><topic>Exact sciences and technology</topic><topic>Manufactured Materials</topic><topic>Materials Testing</topic><topic>Natural gas</topic><topic>Other wastes and particular components of wastes</topic><topic>Phenols - chemistry</topic><topic>Plates</topic><topic>Pollution</topic><topic>Printed circuits</topic><topic>Pyrolysis</topic><topic>Recycling - methods</topic><topic>Refuse Disposal - methods</topic><topic>Residues</topic><topic>Separation</topic><topic>Solders</topic><topic>Temperature</topic><topic>Time Factors</topic><topic>Vacuum</topic><topic>Waste Management - methods</topic><topic>Wastes</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhou, Yihui</creatorcontrib><creatorcontrib>Wu, Wenbiao</creatorcontrib><creatorcontrib>Qiu, Keqiang</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Environmental Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>MEDLINE - Academic</collection><collection>Environment Abstracts</collection><collection>Pollution Abstracts</collection><collection>Sustainability Science Abstracts</collection><collection>Environment Abstracts</collection><jtitle>Waste management (Elmsford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhou, Yihui</au><au>Wu, Wenbiao</au><au>Qiu, Keqiang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Recovery of materials from waste printed circuit boards by vacuum pyrolysis and vacuum centrifugal separation</atitle><jtitle>Waste management (Elmsford)</jtitle><addtitle>Waste Manag</addtitle><date>2010-11-01</date><risdate>2010</risdate><volume>30</volume><issue>11</issue><spage>2299</spage><epage>2304</epage><pages>2299-2304</pages><issn>0956-053X</issn><eissn>1879-2456</eissn><abstract>In this research, a two-step process consisting of vacuum pyrolysis and vacuum centrifugal separation was employed to treat waste printed circuit boards (WPCBs). Firstly, WPCBs were pyrolysed under vacuum condition at 600
°C for 30
min in a lab-scale reactor. Then, the obtained pyrolysis residue was heated under vacuum until the solder was melted, and then the molten solder was separated from the pyrolysis residue by the centrifugal force. The results of vacuum pyrolysis showed that the type-A of WPCBs (the base plates of which was made from cellulose paper reinforced phenolic resin) pyrolysed to form an average of 67.97 wt.% residue, 27.73 wt.% oil, and 4.30 wt.% gas; and pyrolysis of the type-B of WPCBs (the base plates of which was made from glass fiber reinforced epoxy resin) led to an average mass balance of 72.20 wt.% residue, 21.45 wt.% oil, and 6.35 wt.% gas. The results of vacuum centrifugal separation showed that the separation of solder was complete when the pyrolysis residue was heated at 400
°C, and the rotating drum was rotated at 1200
rpm for 10
min. The pyrolysis oil and gas can be used as fuel or chemical feedstock after treatment. The pyrolysis residue after solder separation contained various metals, glass fibers and other inorganic materials, which could be recycled for further processing. The recovered solder can be reused directly and it can also be a good resource of lead and tin for refining.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><pmid>20655190</pmid><doi>10.1016/j.wasman.2010.06.012</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0956-053X |
| ispartof | Waste management (Elmsford), 2010-11, Vol.30 (11), p.2299-2304 |
| issn | 0956-053X 1879-2456 |
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| source | MEDLINE; Access via ScienceDirect (Elsevier) |
| subjects | Applied sciences Boards Centrifugation - methods Computers Electronics Equipment Design Exact sciences and technology Manufactured Materials Materials Testing Natural gas Other wastes and particular components of wastes Phenols - chemistry Plates Pollution Printed circuits Pyrolysis Recycling - methods Refuse Disposal - methods Residues Separation Solders Temperature Time Factors Vacuum Waste Management - methods Wastes |
| title | Recovery of materials from waste printed circuit boards by vacuum pyrolysis and vacuum centrifugal separation |
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