Turning electronic waste into metal alloys - solving the global e-waste crisis.

By Dilip -
A pilot micro-factory that safely transforms toxic electronic waste (e-waste) into high value metal alloys is soon to be unveiled at the University of New South Wales, offering a unique low-cost solution to one of the world’s fastest-growing waste burdens. The breakthrough new process, invented by UNSW ARC Laureate Professor Veena Sahajwalla, recovers the considerable wealth of resources embedded in e-waste while overcoming the challenges of toxicity and the often prohibitively high costs of conventional industrial-scale recycling.

Professor Sahajwalla’s solution will enable the safe, cost-effective ‘mining’ of e-waste stockpiles locally, anywhere in the world. The US$1 trillion global electronics industry generated about 42 million tonnes of obsolete equipment in 2014, a potential loss of some US$52 billion worth of embedded resources, according to a recent United Nations Environment Program report.

Although e-waste contains a range of valuable metals, it is especially challenging to recycle due to the presence of toxins and the complex mix of materials. Currently, large volumes of e-waste are exported from industrial economies like Australia to developing nations, where hand processing to recover metals exposes poor communities to dangerous contaminants.

“The world urgently needs a safe, low cost recycling solution for e-waste. Our approach is to enable every local community to transform their e-waste into valuable metal alloys, instead of leaving old devices in drawers or sheds, or sending them to landfill,” said Professor Sahajwalla.

Professor Sahajwalla uses precisely controlled high-temperature reactions to produce copper and tin-based alloys from waste printed circuit boards (PCBs), while simultaneously destroying toxins. A programmed drone is able to identify PCBs from within crushed e-waste, and a simple robot is used to extract them, overcoming the risks of contamination, before the PCBs are fed into the furnace.

“A tonne of mobile phones (about 6,000 handsets), for example, contains about 130kg of copper, 3.5kg of silver, 340 grams of gold and 140 grams of palladium, worth tens of thousands of dollars.
“We already understand the value of sourcing green energy from the sun, similarly we can source valuable green materials from our waste. ‘Mining’ our waste stockpiles makes sense for both the economy and the environment,” she said.

Until now, safe e-waste processing has been restricted to high-cost industrial-scale facilities with very large furnaces, leaving many communities across Australia, and around the world, without a viable solution. CleanUp Australia estimates almost 90 per cent of the four million televisions and three million computers Australians buy each year will end up in landfill.

The new micro-factories are suitable for mobile use: they can be set up in containers and transported to waste sites, avoiding the huge costs and emissions of trucking or shipping e-waste over long distances. Likewise, they promise a safe new way for poor communities in developing nations to generate an income from the production of metal alloys. The e-waste solution will be showcased at UNSW’s Centre for Sustainable Materials Research and Technology (SMaRT), directed by Professor Sahajwalla. 
http://www.international.unsw.edu.au/news/turning-e-waste-gold?utm_source=ContentMarketing&utm_medium=Outbrain&utm_campaign=UNSW_PI_Content_Marketing


Popular posts from this blog

Third degree torture used on Maruti workers: Rights body

By Dilip -
The People’s Union for Democratic Rights on Tuesday alleged that third degree torture methods were used by the Gurgaon Criminal Investigation Agency while interrogating workers of Maruti Suzuki India Limited’s Manesar plant who are accused of involvement in the killing of an HR manager and the violent attack at the plant on July 18. The PUDR alleged that the Gurgaon CIA investigation “did not seem” to be directed at solving the crime or probing the involvement of the arrested workers in the incidents and crimes recorded in the FIR but instead was based on their involvement in trade union activities. Grave doubts  “The use of third degree torture in police custody, and the securing of arrestees’ signatures on blank papers by the police, gives rise to grave doubts regarding the ability of such an investigation in effectively identifying or arresting those guilty. The police and the State seem keener to reassure Maruti Suzuki Ltd. and ensure that production continues,” the ...
Read more

Haruki Murakami: On seeing the 100% perfect girl one beautiful April morning

By Dilip -
According to Murakami, “1Q84” is just an amplification of one of his most popular short stories,   which (in its English version) is five pages long. “Basically, it’s the same,” he told me. “A boy meets a girl. They have separated and are looking for each other. It’s a simple story. I just made it long.” One beautiful April morning, on a narrow side street in Tokyo's fashionable Harujuku neighborhood, I walked past the 100% perfect girl. Tell you the truth, she's not that good-looking. She doesn't stand out in any way. Her clothes are nothing special. The back of her hair is still bent out of shape from sleep. She isn't young, either - must be near thirty, not even close to a "girl," properly speaking. But still, I know from fifty yards away: She's the 100% perfect girl for me. The moment I see her, there's a rumbling in my chest, and my mouth is as dry as a desert..." read the story: http://www.youmightfindyourself.com/post/22131227...
Read more

Albert Camus's lecture 'The Human Crisis', New York, March 1946. 'No cause justifies the murder of innocents'

By Dilip -
The morning after a great historical crisis, you feel as sad and sick as after a heavy night. But there is no aspirin for historical hangovers .. The world is no longer divided into the just or unjust, but into masters and slaves. He who is right is he who enslaves.  Albert Camus     La crise de l'homme : THE HUMAN CRISIS   (Text read by Viggo Mortensen on March 28 2016)   Ladies and Gentlemen: when I was invited to give a series of lectures in the United States of America, I felt some doubt and hesitation. I am really not old enough to give lectures, and I am more at ease with the process of thinking than I am making categorical statements... since I don't feel I have any claim on what is generally called the truth. I shared this reservation and was very politely told that my personal opinion didn't matter. What mattered was that I'd be able to offer some facts about France so that my listeners could form their own opinions. It was then suggested...
Read more

The Almond Trees by Albert Camus (1940)

By Dilip -
Image
'Do you know', Napoleon once said to Fontanes, 'what astounds me most about the world?  The impotence of force to establish anything.  There are only two powers in the world: the sword and the mind.  In the end, the sword is always conquered by the mind' Conquerors, you see, are sometimes melancholy.  They have to pay some price for so much vainglory. But what a hundred years ago was true of the sword is no longer true today of the tank. Conquerors have made progress, and the dismal silence of places without intelligence has been established for years at a time in a lacerated Europe. At the time of the hideous wars of Flanders, Dutch painters could still perhaps paint the cockerels in their farmyards. The Hundred Years War has likewise been forgotten, and yet the prayers of Silesian mystics still linger in some hearts. But today, things have changed; the painter and the monk have been drafted - we are one with the world.  The mind has lost that regal certai...
Read more

Etel Adnan - To Be In A Time Of War

By Dilip -
NB: Etel Adnan, writer, poet, artist and musician was born in 1925 and raised in Beirut, Lebanon. Her mother was a Greek from Smyrna, her father, a high ranking Ottoman officer born in Damascus. This prose poem is the final chapter of her book  In the Heart of the Heart of Another Country .  Read more about her here  - DS To Be In A Time Of War To say nothing, do nothing, mark time, to bend, to straighten up, to blame oneself, to stand, to go toward the window, to change one’s mind in the process, to return to one’s chair, to stand again, to go to the bathroom, to close the door, to then open the door, to go to the kitchen, to not eat nor drink, to return to the table, to be bored, to take a few steps on the rug, to come close to the chimney, to look at it, to find it dull, to turn left until the main door, to come back to the room, to hesitate, to go on, just a bit, a trifle, to stop, to pull the right side of the curtain, then the other side, ...
Read more

After the Truth Shower

By Dilip -
Dear Readers Thank you for reading my blog for the past eleven years. (This is a link to the new one) During this time it has had nearly 1.7 million hits; and I have posted over 9500 posts covering a variety of themes. From July 11 to 19, 2022, my blog was withdrawn by the Blogger administration on account of what its machinery suspected to be 'Impersonation'. It took over a week and the efforts of several well-wishers to get it back online I thank them all for their kindness and goodwill  My blog has always been - and remains - non-commercial. I have used it for academic purposes; and to foster a culture of debate and informed commentary in civil society. Because it contains a large amount of material gathered and collated for over a decade, I cannot afford to lose its contents. I hope it will remain undisturbed now and function as an archive. However, I have decided to use a new blog on WordPress as a platform for my newest comments and posts The new blog is titled After the...
Read more

James Gilligan on Shame, Guilt and Violence

By Dilip -
Shame, Guilt, and Violence / James Gilligan During the past 35 years I have used prisons and prison mental hospitals as "laboratories" in which to investigate the causes and prevention of the various forms of violence and the relationships between these forms and to what I will call (with a nod to William James) "the varieties of moral experience." In the course of that work, I have been struck by the frequency with which I received the same answer when I asked prisoners, or mental patients, why they assaulted or even killed someone. Time after time, they would reply "because he disrespected me" or "he disrespected my visitor [or wife, mother, sister, girl-friend, daughter, etc.]." In fact, they used that phrase so often that they abbreviated it into the slang phrase, "He dis'ed me." Whenever people use a word so often that they abbreviate it, it is clearly central to their moral and emotional vocabulary. But even when they did n...
Read more