Cyanotype safety and disposal of chemicals

[marthaeagray]

Hi everyone,

I am currently studying a new course and have been told that I cant use cyanotype because of the hazards of the disposals of potassium ferricyanide and ferric ammonium citrate. I believe the two chemicals mixed together in the quantities used for cyanotype are safe to use and dispose of. Does anyone know of any evidence or scholarly/scientific articles that can prove its safety to help me out?

 

[Original katomi]

Also look at your local laws on disposal of waste. You may find that you have to take Chem,s to an approved disposal site.

 

[webestang6417 1]

Look at section 7.7 of this PDF........ https://www.mikeware.co.uk/downloads/Cyanomicon_II.pdf

 

[weepete]

try US3909403A - Process of treating waste water - Google Patents

or a few of these: Google Scholar