Power Point Presentation (PDF) - Green Chemistry Center

Green Chemistry
–Environmental Chemistry
• Ozone hole and troposheric air pollution: carbon dioxide as a
replacement for CFCs and hydrocarbon blowing agents;
surfactants for carbon dioxide so that carbon dioxide can be
used to replace VOCs.
• Pesticides: readily biodegradable marine antifoulant as
replacement for tributyltin oxide; selective pesticides as
replacements for broad spectrum pesticides.
• Toxic organic chemicals (e.g. dioxins): activators of hydrogen
peroxide to replace chlorine bleaching agents.
• Polluted water and sewage treatment: biodegradable scale
inhibitors and dispersing agents as a replacement for
polyacrylate polymer.
• Solid waste, landfills and closed loop recycling: Petretec
process for conversion of PET back into its monomers and
reformation into virgin PET.
Environmental Chemistry
Baird & Cann
• Introduction to Green Chemistry –Atom
economy; synthesis of ibuprofen.
• Ozone –CO 2 as a blowing agent; Harpin as a
replacement for methyl bromide fumigant.
• Tropospheric pollutants –CO 2 surfactants.
• Greenhouse gases –scCO 2 in
photolithography.
• Energy/petroleum –biodegradable polymers
from renewable resources.
• Pesticides –selective pesticides; termite control/
reduced risk pesticides.
Environmental Chemistry
Baird & Cann
• Toxic organics –non-chlorine bleaching agents,
H 2 O 2 activators
• Water pollution/purification –enzymatic
preparation of cotton textiles; biodegradable
chelating agents
• Heavy metals –removal of lead from automobile
paint; removal of arsenic and cadmium from
pressure treated wood
• Solid waste –biodegradable antiscalant;
recylable carpeting