emew Blog

Sara Wollschlaeger

Recent Posts

ESG and Beyond: Achieve sustainability with emew technology.

Posted by Sara Wollschlaeger on Oct 3, 2023 10:44:45 AM

Minimize your environmental impact

As technology advances, demand for metals continues to increase, causing economic, social, and environmental challenges in the supply chain. Existing mines may move out of operation as ores are depleted, lower-grade ores make processing and waste management more challenging, and stricter socio-environmental regulations may delay or hinder new operations from opening. Recycling has been highlighted by the United Nations (UN) as a key strategy for the success of the UN’s Sustainable Development Goals (SDGs). Recycling, defined as the reprocessing and repurposing of wastes, is essential because it closes the material flow loops to achieve a circular economy. (1)

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Copper Recovery from an Acid Mine Drainage Stream

Posted by Sara Wollschlaeger on May 11, 2020 2:16:03 PM

Acid mine drainage: we’ve all heard of it, and its negative reputation. But what if we told you that it’s not all bad? What if this environmental pollutant was recovered and transformed into a profit-turning resource? [Bejan & Bunce, 2015] There are varying methods of dealing with acid mine drainage (AMD), but only some of them are economically viable and effective long-term. This blog post is going to dive into some of the solutions for the treatment of AMD, and how emew technology provides one of the most promising alternatives, specifically for copper recovery from acid mine drainage.

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Topics: copper, acid, mine, recovery

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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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

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

What is 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