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Interesting stuff from Low Tech Magazine

How much energy does it take (on average) to produce 1 kilogram of the following materials?

•Wood (from standing timber): 3-7MJ (830 to 1,950 watt-hours).
•Steel (from recycled steel): 6-15MJ (1,665 to 4,170 watt-hours).
•Aluminum (from 100 % recycled aluminum): 11.35-17MJ (3,150 to 4,750 watt-hours)
•Iron (from iron ore): 20-25MJ (5,550 to 6,950 watt-hours)
•Glass (from sand, etcetera): 18-35MJ (5,000 to 9,700 watt-hours)
•Steel (from iron): 20-50MJ (5,550 to 13,900 watt-hours)
•Paper (from standing timber): 25-50MJ (6,950 to 13,900 watt-hours)
•Plastics (from crude oil): 62-108MJ (17,200 to 31,950 watt-hours)
•Copper (from sulfide ore): 60-125MJ (16,600 to 34,700 watt-hours)
•Aluminum (from a typical mix of 80% virgin and 20% recycled aluminum): 219 MJ (60,800 watt-hours)
•Silicon (from silica): 230-235MJ (63,900 to 65,300 watt-hours)
•Nickel (from ore concentrate): 230-270MJ (63,900 to 75,000 watt-hours)
•Aluminum (from bauxite): 227-342MJ (63,000 to 95,000 watt-hours)
•Titanium (from ore concentrate): 900-940MJ (250,000 to 261,000 watt-hours)
•Electronic grade silicon (CVD process): 7,590-7,755MJ (2,108,700 to 2,154,900 watt-hours).

Note: 1 megajoule (MJ) = 277.77 watt-hour (Wh)

 

BLOG STATS As of 01.29.2017 onward have been counting the number people who have read each post. WHY CUT PLASTIC About 100 million tons of plastic are produced each year and much of it is used to make one-use, disposable items. Because plastic doesn't biodegrade these items, though only used for moments can last for decades, centuries, possibly forever. We are creating ever lasting rubbish in unsustainable amounts. It is polluting the environment, maiming even killing animals, poisoning fish and may be poisoning us.

3 thoughts on “how much energy goes into plastic ?

  1. I know, me too. Rather I just assumed that to be the case. I cant confirm this information but I put it out there for consideration. Thanks for dropping by.

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