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topic 1643

Feasibility of electrowinning technology.


(1998)

We are conducting research to determine the feasibility of recovering copper, nickel and tin from electroplating baths using electrowinning technology. We would like to know the average volumes; concentration and chemical nature of the wastewater before it is treated. In addition, what would be considered a high volume and concentration?

Daren Yetman
- Canada


Perhaps I'm misunderstanding you. Electrowinning has been used for recovery of these processes in hundreds of shops for decades. I could name a dozen or more commercial vendors of these cells. There have been (and in some cases there are patents on) recovery onto simple stainless steel anodes, reticulated copper, and high surface area carbon. Numerous techniques to minimize the boundary layer have been used including 'scraping' with glass beads, high energy impingement, high rate recirculation, and even pulse plating. In many cases, the wastewater is passed through ion-exchange (an ideal technology for high volume - low concentration wastes), and then the regenerant is electrolytically recovered. My point is that there are hundreds of real case histories; you don't have to make any conjectures about the feasibility when hard evidence is available. Are you proposing a radically different technology?

Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey


(1998)

Electrowinning is a proven method for wastewater treatment. As you suggest, "electrowinning has been used for recovery of these processes in hundreds of shops for decades".

Daren Yetman



Okay, good luck then. Let's see if some people respond to your inquiry. Our experience has been that many shops are willing to help suppliers develop and prove new equipment and processes.

Ted Mooney, finishing.com
Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey


(1999)

I am interested in technology that competes with electrowinning.

Frank S. Craft
- Memphis,Tennessee


(1999)

We are involved in many EW projects for different metals such as copper, zinc, cobalt and nickel and see a lot of potential for EW, particularly in combination with SX technology. Also IX has been applied to very diluted solutions which I believe is the particular field you wish to tackle.

Alex Lillo
- Santiago, Chile


December 3, 2009


Greetings. I'm interested on implement the electrowinning technology for my wastewater sludge..

Is it possible to achieve above method for low-metal concentration?(Eg. Nickel: 3g/kg, Silver: 0.3g/kg)

Helmy Selim
- Kuala Lampur, Malaysia



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