Category: Manufacturing

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Researchers Use Ultrasound to Recover Gold from Electronic Scrap

The last few months have been ripe with reports on new research related to material recovery from electronic scrap (commonly referred to as “e-scrap” or “e-waste”), as highlighted in a previous post. I’ve learned of yet another exciting innovation in this field, thanks to a feature written by Jared Paben in the latest edition (4/19/18) of E-Scrap News.

As Paben reports, researchers from Sandia National Laboratories have developed a method to use ultrasonic waves, coupled with surfactants, to cheaply and efficiently recover gold from scrap electronics. Their experiments involved application of two different surfactants to the surface of a cell phone SIM card, which was then submerged in water. Ultrasonic waves were applied, which imploded micro-bubbles on the SIM card’s surface. Upon collapse of these micro-bubbles, micro-jets ejected gold nanoparticles from the card’s surface, and the nanoparticles were captured and stabilized by the surfactants.

According to the research group’s paper, published in the journal Small on 3/24/18), this mechanical method may not only present an effective way of reclaiming gold and other metals from electronic scrap, but could potentially be used to manufacture gold nanoparticles from native gold metal directly upon recovery from mining, which they say “may represent the greenest possible approach to nanoparticle synthesis.” (Citation: J. Watt, M. J. Austin, C. K. Simocko, D. V. Pete, J. Chavez, L. M. Ammerman, D. L. Huber, Small 2018, 1703615. https://doi.org/10.1002/smll.201703615)

You can read more about this research in a 4/3/18 article from New Scientist.

To learn about cavitation and cavitation bubbles, the phenomena which allow this mechanical process to work, see https://www.nsf.gov/news/special_reports/science_nation/cavitationbubbles.jsp and https://en.wikipedia.org/wiki/Cavitation.

For more information on gold in electronics, see How Much Gold is in Smartphones and Computers? and Uses of Gold in Industry, Medicine, Computers, Electronics, Jewelry.

To learn about the properties and applications of gold nanoparticles, see https://www.sigmaaldrich.com/technical-documents/articles/materials-science/nanomaterials/gold-nanoparticles.html.

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Amnesty International Reports on Child Labor in Cobalt Battery Supply Chain

On November 15, 2017, Sustainable Brands reported that Amnesty International had released a new report revealing that tech industry giants such as Microsoft, Lenovo, Renault and Vodafone aren’t doing enough to keep child labor out of cobalt battery supply chains in Democratic Republic of Congo (DRC) and China. “The findings come almost two years after Amnesty exposed a link between batteries used in their products and child labor. Time to Recharge ranks industry leaders, including Apple, Samsung SDI, Dell, Microsoft, BMW, Renault, Vodafone and Tesla according to improvements to their cobalt-sourcing practices since January 2016. The 108-page report revealed that only a handful of companies made progress, with many failing to take even basic steps, such as investigating supply links in the DRC. The report’s publication is timely, arriving just months after the UK government announced plans to ban new petrol and diesel cars and vans from 2040, which would ultimately lead to higher demand for cobalt batteries. This last point is particularly problematic as recent reports have revealed that cobalt resources are on the decline, despite demand growth predicted at 500 percent.”

See http://www.sustainablebrands.com/news_and_views/walking_talk/sustainable_brands/amnesty_international_reveals_tech_industry_giants_fa for the complete article on the Sustainable Brands web site.

To download the report itself, Democratic Republic of the Congo: Time to recharge: Corporate action and inaction to tackle abuses in the cobalt supply chain (15 November 2017, Index number: AFR 62/7395/2017), see https://www.amnesty.org/en/documents/afr62/7395/2017/en/.

Amnesty International logo, with the wordmark on a yellow background beside a stylized image of a lit candle entwined with barbed wire

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Death by Design Screening, August 22 at Champaign Public Library

On Tuesday, August 22, the Illini Gadget Garage will be hosting a screening of the documentary Death by Design at the Champaign Public Library. Doors will open at 6:30 PM and the film will begin at 7:00. The film duration is 73 minutes.

The Illini Gadget Garage is a repair center that helps consumers with “do-it-together” troubleshooting and repair of minor damage and performance issues of electronics and small appliances. The project promotes repair as a means to keep products in service and out of the waste stream. The Illini Gadget Garage is coordinated by the Illinois Sustainable Technology Center.

Death by Design explores the environmental and human costs of electronics, particularly considering their impacts in the design and manufacture stages, bearing in mind that many electronic devices are not built to be durable products that we use for many years. Cell phones, for example, are items that consumers change frequently, sometimes using for less than 2 years before replacing with a new model. When we analyze the effort put into, and potential negative impacts of, obtaining materials for devices through efforts like mining, the exposure to potentially harmful substances endured by laborers in manufacturing plants, and the environmental degradation and human health risks associated with informal electronics recycling practices in various parts of the word, the idea that we might see these pieces of technology as “disposable” in any way becomes particularly poignant. For more information on the film, including reviews, see http://deathbydesignfilm.com/about/  and
http://bullfrogfilms.com/catalog/dbd.html. You can also check out the trailer at the end of this post.

After the film, there will be a brief discussion and Q&A session facilitated by Joy Scrogum, Sustainability Specialist from the Illinois Sustainable Technology Center (ISTC) and project coordinator for the Illini Gadget Garage. UI Industrial Design Professor William Bullock will also participate in the panel discussion; other panelists will be announced as they are confirmed. Professor Bullock is also an adviser for the Illini Gadget Garage project; see more about IGG advisers at http://wp.istc.illinois.edu/ilgadgetgarage/meet-the-advisers/.  Check the IGG web site calendar and Facebook page for room details and panelist announcements.

Admission to this public screening is FREE, but donations are suggested and appreciated to support future outreach and educational efforts of the Illini Gadget Garage. See http://wp.istc.illinois.edu/ilgadgetgarage/donate/donation-form/ to make an online donation and http://wp.istc.illinois.edu/ilgadgetgarage/ for more information on the project.

Bullfrog Films presents…DEATH BY DESIGN from Bullfrog Films on Vimeo.

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2017 iNEMI Roadmap Rollout Webinars

The International Electronics Manufacturing Initiative (iNEMI) regularly produces industry roadmaps. According to the iNEMI web site, “Each edition is a global collaborative effort that involves many individuals who are leading experts in their respective fields and represent many perspectives on the electronics manufacturing supply chain.  Our roadmap has become recognized as an important tool for defining the “state of the art” in the electronics industry as well as identifying emerging and disruptive technologies. It also includes keys to developing future iNEMI projects and setting industry R&D priorities over the next 10 years.”

The latest edition of the iNEMI roadmap will go on sale this month. In preparation, iNEMI is previewing highlights from select chapters in the following two webinars:

  • Asia (April 6): Internet of Things (IoT) and Packaging & Components Substrates chapters
  • North America/Europe (April 7): IoT and Sustainable Electronics chapters

For details including session overviews, times, and online registration, see the iNEMI web page for these rollout webinars.

The purpose of these webinars is to introduce the 2017 iNEMI Roadmap and identify key issues and needs, collect feedback during the Q & A session for ongoing gap analysis purposes, recruit participation in in the development of the iNEMI Technical Plan, and recruit participation in the next roadmap development cycle. (See http://community.inemi.org/content.asp?contentid=56 for information on the 2015 Technical Plan.)

iNEMI logo