ENV221-Lecture 6 - ENV221, Fall Semester 2010 Oct. 5th...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
ENV221, Fall Semester 2010 Oct. 5 th Lecture #6: ENERGY (2) 1. Fossil fuels Oil - Issues with oil use o High sulfur level o Potential air and water pollution due to processing activities o Oil spills o Peak oil - Concept of peak oil o M. King Hubbert, Shell geologist, found out that there would be a pe ak in US oil production in th We already passed the peak and the oil production is now declining o More recently scientists predicted that global oil production will pe ak in the coming decade There m ay be other deposits we are not able to find yet, ex: glaciers are m elting up with climate c potential for new discovery of oil and gas Som e of the deposits were very hard to extract in the past and it is e asier now, we m ay experienc in the future and find it e asier to extract som e sources with new technologies - Oil shales and tar sands o Positive Could potentially double the total reserve of oil o Negative: estimation of total oil supply usually do not reflect a large potential Shale = stratu m between which oil goes: not a big deposit + can find shale without oil Oil rapped up with sand, unconventional oil sources Not e asy to extract, need specific process using stea m: very expensive EROI is so high that they proposed to build nuclear supply for processing Severe environm ent al costs Toxic sludge production, m ud, problem in discarding it Water use o Tar sand in Alberta Largest tar sand deposit in the world Big impacts form extraction: landscape change
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/13/2010 for the course ENV ENV221H1 taught by Professor Karening during the Fall '10 term at University of Toronto.

Page1 / 3

ENV221-Lecture 6 - ENV221, Fall Semester 2010 Oct. 5th...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online