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Questions tagged [recycling]

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Do companies recover CO2 and water from the purification step of cryogenic air separation, and how?

In the 3rd step of cryogenic air separation, filtered air is purified to remove water, CO2, and hydrocarbons from the N2-O2-Ar stream. Im interested in knowing what happens with that CO2 and water. ...
2
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0answers
25 views

Health hazards of disassembling electronic devices?

I´ve been disassembling a lot of electronic devices in order to recycle them, separating plastics, electronic boards and bolts/other metal parts. Is there any proof of health hazards for doing it ...
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0answers
36 views

Recycling materials like plexiglass, polycarbonate and dibond

I'm working on a project for a printing company with the main goal to reduce their waste. Paper products are not the issue but they also use materials like plexiglass, polycarbonate and dibond. I was ...
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3answers
38 views

Copper recycling process

Hello I am hoping someone can share their knowledge I encountered a problem on a recent project at a site I visited. They are encountering enormous amounts of waste copper wire which they are sending ...
2
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2answers
111 views

Is it better to throw used domestic cooking oil in toilet or within the garbage? [closed]

I recently asked a friend how I should recycle my used deep frying oil because I just don't have enough oil to justify taking my car, drive 20 minutes away to the waste collection site for few liters ...
2
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1answer
712 views

How can dross/slag formation be reduced during aluminum recycling?

I have furnace for aluminum recycling wherein dross formation is a major issue. It reduces the yield by about 10-12%. I am looking for change in process parameters or other solutions through which I ...
4
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0answers
85 views

What procedure do steel plants use to recycle water vapor?

As you may know Steel plants and Tile Factories use a lot of water. I want to know how do these factories recycle water vapor which is mixed with flue gases to reuse it? Do they take advantage of Heat ...
9
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4answers
2k views

How can the alloying materials of recycled steels be separated?

As I know, a very considerable part of the currently processed steels (around half of it) is coming from recycling. But during the steels coming into the recycling process are coming normally from ...