emew Blog

Acid in electrowinning - a side effect or a valuable by-product?

Posted by Sara Wollschlaeger on Oct 31, 2018 10:36:57 AM
A unique feature of the electrowinning process is acid generation. As a result, acid can be recycled or recovered from the metal depleted electrolyte.  In particular, high concentrations of acid can be produced in an emew cell due to their unique ability to deplete to very low concentrations of metals (< 1 g/L).
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Urban Mining and Metal Recycling

Posted by Alex Barshai on Sep 25, 2018 1:47:15 PM
Did you know that for every million cell phones we recycle, we can recover 35,000 pounds of copper, 772 pounds of silver, 75 pounds of gold and 33 pounds of palladium? By utilizing metal recycling techniques, these recovered metals can be used to solve our continuously depleting resources.
 
In the last decades, we have witnessed a decline in metal concentrations in ores. As a result, mining projects have become more expensive due to the massive amounts of ore that now have to be processed in order to extract pure metal.
 
At the same time, the demand for metals has increased since more and more people in the world are moving to growing cities and want the latest cars, technological gadgets, and computers. Population growth demands housing, infrastructure improvements, public transportation, energy and so on. 
 
So, how do we keep up with the increasing demand for metals while producing countless tons of industrial and electronic waste?
 
The answer is Urban Mining.
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Topics: General

FAQ: Factors that affect production rate and purity

Posted by Sara Wollschlaeger on Sep 19, 2018 11:53:56 AM
In this video we discuss which adjustable parameters in the emew cell affect production and purity, as well as which impurities can adversely affect the operation of an emew plant.
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Topics: Video

FAQ: Which metals can emew electrowin?

Posted by Sara Wollschlaeger on Sep 11, 2018 8:42:05 PM
In this video, we explain which metals emew can recover, and if selective recovery of silver from a solution with high copper content is possible.
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Topics: Video

Basics of Cobalt Electrowinning in Under 3 Minutes

Posted by Sara Wollschlaeger on Sep 4, 2018 9:41:07 AM
When talking about electrowinning, copper, silver, and nickel always seem to be the center of attention.  However, with the recent advancements in electric vehicles and electronics, it’s Cobalt’s time to shine.
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Topics: Refinery Optimization

The Ultimate Guide to Wastewater Treatment

Posted by Alex Barshai on Aug 21, 2018 11:18:13 AM
Clean, fresh water is a luxury in many countries and is increasingly becoming a valuable commodity.  Our society today is faced with the challenge of harnessing the power of advanced wastewater treatment technologies to preserve our precious water resources.  Not only does this apply to municipal water treatment plants that work around the clock to make sure communities all over the world have access to clean, fresh water, but also in industrial processes to minimize usage and waste.
 
"Presently only 20% of globally produced wastewater receives proper treatment."
- United Nations Educational, Scientific, and Cultural Organization (UNESCO)
 
In the years following the industrial revolution and continuing on into the information age, industries have been challenged to develop new and innovative ways to treat wastewater and bleed streams to encourage recycling and reduce discharge towards the holy grail of so-called 'zero discharge'.  We've come a long way in the latter part of the 20th Century, but there's still work to be done as populations swell, economies grow and everyone strives to improve their quality of life and that of his or her children. 
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Topics: Wastewater Treatment

FAQ: Operating Cost of emew Electrowinning Plant

Posted by Sara Wollschlaeger on Aug 13, 2018 4:31:30 PM
In this video we answer questions about how to size your emew plant, what are typical delivery times for emew equipment, and what is the cost of an emew plant.
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Topics: Video

Cobalt and Nickel wastewater: How much money are you flushing down the drain?

Posted by Sara Wollschlaeger on Aug 8, 2018 4:40:18 PM

Two case studies on the value of metal recovery from wastewater

It’s no secret that industrial pollution is harmful to the environment and human health.
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Topics: Wastewater Treatment

FAQ: emew VS Conventional Electrowinning

Posted by Sara Wollschlaeger on Jul 30, 2018 2:30:39 PM

In one of the previous posts I described the basic principle of conventional electrowinning. Today I would like to talk about the differences between conventional electrowinning and proprietary emew technology, which is based on fundamental electrowinning tenets but offers so many additional benefits.

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Topics: Video

FAQ: Acid Mist

Posted by Sara Wollschlaeger on Jul 23, 2018 3:53:37 PM

Many industries generate acid mist as a result of their industrial processes. In most cases the acid mist will be caused by usage of inorganic acids, and in particular sulfuric acid. Sulfuric acid is mostly used in a production of fertilizers, and industries like pulp and paper, iron and steel, mining, refining and wastewater treatment.  Acid mist is formed as a condensation of acid vapour and the extent of the mist will depend on the industry, process and solution itself.

 

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Topics: Video