Navigation Links
Filter developed by VTT helps recover 80 percent of gold in mobile phone scrap
Date:4/10/2014

Mobile phone scrap can contain precious metals, such as gold and copper. VTT Technical Research Centre of Finland has developed a biological filter made of mushroom mycelium mats enabling recovery of as much as 80% of the gold in electronic scrap. Extraction of copper from circuit board waste, on the other hand, can be enhanced significantly by flotation the crushed and sieved material.

Although research into the biological methods is active, these are still rarely used in metal recovery chains. In a European "Value from Waste" project, VTT developed both biological and mechanical pre-treatment methods for more efficient recovery of precious metals from electronic waste. Other methods developed by researchers included recovery of gold from dissolved materials by biosorption and extraction, using as few harmful chemicals as possible.

Fungi catch gold and filter out impurities

VTT has developed a method that harnesses biosorbents, such as fungal and algae biomass, for the recovery of precious metals converted to a solution. In VTT tests, more than 80% of the gold in the solution adhered to the biomass, compared with only 1020% of the harmful process chemicals.

The uniqueness of the method lies in the structure of the biomass. Different filament structures can be formed, for example, into biological filters, which makes further industrial processing of precious metals easier.

Gold also separates well in liquid-liquid extraction

The project developed a method with high extraction capacity for gold recovery, using the newest environmentally-friendly extraction reagents. In VTT experiments, it was possible to recover more than 90% of the metal solution dissolved from a circuit board with the help of functional ionic liquid. The method facilitates extraction of desired components from impurities.

Recovering copper from circuit boards by flotation

The new pre-treatment method
'/>"/>

Contact: Olli Salmi
olli.salmi@vtt.fi
358-207-225-216
VTT Technical Research Centre of Finland
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Nano-paper filter removes viruses
2. Special air filter blocks small particles called UFPs from getting inside cars
3. Living biofilters could reduce greenhouse gas emissions
4. Solar-powered nanofilters pump in antibiotics to clean contaminated water
5. Medical societies to launch large-scale study on vein filter use
6. Synthetic biofilter wins through to the top Sweet 16 in Boston
7. A brain filter for clear information transmission
8. Innovative solutions for lab-automation developed by Bioprocess Engineers from Dresden
9. Ancient food webs developed modern structure soon after mass extinction
10. The basis of a new bioinsecticide is developed to control a pest of banana plantations
11. Caltech-developed method for delivering HIV-fighting antibodies proven even more promising
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/4/2015)... 04, 2015 Research and Markets ... the "Global Biometrics Market Forecast and Opportunities, ... The market for biometric authentication systems is projected ... till 2020 The driving forces for ... needs, government projects and constant development in technology. ...
(Date:3/2/2015)... , March 2, 2015   Neurotechnology , a ... introduced the SentiGaze Software Development Kit (SDK). ... applications that use off-the-shelf webcams to track eye movements ... at a monitor. Heatmaps can be used for applications ... of online advertising. The SDK can also be used ...
(Date:2/24/2015)... 2015 Research and Markets ( ... "Global 2D Gesture Recognition Market 2015-2019" ... analysts forecast the Global 2D Gesture Recognition market ... the period 2014-2019 The increased demand ... one of the major trends in the market. ...
Breaking Biology News(10 mins):Global Biometrics Market Forecast and Opportunities, 2020 2Global Biometrics Market Forecast and Opportunities, 2020 3Neurotechnology Releases SentiGaze SDK for Eye Movement Tracking Using Ordinary Webcams 2Neurotechnology Releases SentiGaze SDK for Eye Movement Tracking Using Ordinary Webcams 3Global 2D Gesture Recognition Market 2015-2019 with Cognitec Systems, CogniVue, eyeSight Mobile Technologies & PointGrab Dominating 2
... 2012 - The 2010 blowout of the Macondo well in ... region,s largest oil spill in U.S. history. As the Deepwater ... oil from coming to the surface and reaching coastal and ... powerful dispersants, typically used to break up oil slicks at ...
... Saito, a biogeochemist at Woods Hole Oceanographic Institution, has been ... the Gordon and Betty Moore Foundation. Saito is one of ... from a total of up to $35 million over five ... microbial ecology. "We are grateful to the Moore Foundation ...
... French . Thanks to the support of ... work together over a five-year period to translate the results ... the way for personalised medicine in CMDs. Researchers and clinicians ... be involved in the METACARDIS project. The aim of ...
Cached Biology News:Numerical study suggests subsea injection of chemicals didn't prevent oil from rising to sea surface 2Numerical study suggests subsea injection of chemicals didn't prevent oil from rising to sea surface 3WHOI scientist receives marine microbiology initiative investigator award from Moore Foundation 2METACARDIS: a European project that deciphers the genes of the gut microbiota 2METACARDIS: a European project that deciphers the genes of the gut microbiota 3
(Date:3/5/2015)... 2015 e2b teknologies , a ... in Northeast Ohio, today announced a leading independent multi-specialty ... its upgrade to the latest version of Sage ... practice of its kind in the region, the organization ... transactions, so efficiency and data accessibility are paramount to ...
(Date:3/4/2015)... Nev. , March 4, 2015 PDL BioPharma, Inc. ... adjusted conversion rate for the: , 3.75% Convertible ... 174.8506 shares of common stock per $1,000 principal amount or ... The conversion rate for the note is adjusted in connection ... on March 12, 2015, to all stockholders who own shares of ...
(Date:3/4/2015)... March 4, 2015  Brooklyn residents now have a ... chronic pain and injuries. Nunzio Saulle , M.D., ... opening of his NJS Physical Medicine and Rehabilitation (PM&R) ... Thursday, March 5, 2015. Health Plus Management, LLC is ... located at 1178 Flatbush Avenue. This new PM&R practice ...
(Date:3/4/2015)... , Mar. 04, 2015 Research and Markets ... addition of the "Global Biologics and Biosimilars ... , The Global Biologics and ... in-depth study on the current state of the ... provides a basic overview of the industry including ...
Breaking Biology Technology:Physician Group Practice Chooses e2b teknologies to Support Its Upgrade to Sage 100 ERP 2014 2PDL BioPharma Announces Conversion Rate Adjustment for Convertible Note 2NJS Physical Medicine & Rehabilitation Opening on Flatbush Avenue, Brooklyn, NY 2Global Biologics and Biosimilars Industry Report 2015-2020 2
... and managing to duck the hype of peer-to-peer networking, ... platform based on a "grid network" to accelerate the delivery ... a clever product director, Homer has guided Kontiki around the ... to build a platform and company that serves content providers ...
... Merge eFilm , the Milwaukee-based medical imaging technology company ... momentum leading into its proposed merger with Toronto-based Cedara ... more than $10.5 million in first-quarter 2005. , ,That's ... a 19 percent year-over-year jump in net sales in ...
... team of engineers and biologists has come up with a ... very small crystals and measuring their changing response to electricity. ... on the order of a handful of molecules. , ... and Robert Blick, found they could open new electrical channels ...
Cached Biology Technology:Creating a public service for multimedia content 2Creating a public service for multimedia content 3Creating a public service for multimedia content 4Merge eFilm earnings jump precedes planned merger 2Merge eFilm earnings jump precedes planned merger 3
Denhardt's Solution is a mixture of blocking agents used in membrane-based hybridization protocols. The solution contains 1% Ficoll (type 400) 1% polyvinylpyrrolidone and 1% bovine serum albumin. Ste...
... CHEMICONs ELF 97 Cytological Labeling Kit ... facilitate the detection of cellular targets, including ... 97 Cytological Labeling Kit contains the patented ... brightly fluorescent yellow-green precipitate at the site ...
... H 10 O 2 S 2 ... Form: White crystalline powder Assay: greater ... By IR Melting Point: greater than ... less than or equal to 1% ...
... Fluorescence Test Plate consists of an anodized ... Inert Organic Fluorescent Compounds embedded in polymerized ... on BioTeks FLx800 and Synergy Multi-Detection Readers. ... GLP compliance while reducing the need for ...
Biology Products: