ICCE EUCHEMS   18-22 June 2017.
ACS ENVR is hosting an Algae Toxins workshop on 16-17th (see Satellite Events on ICCE website).

2nd Future of Surfactants Summit Europe
8th & 9th February 2017 in Antwerp, Belgium

8th Carbon Dioxide Utilization Summit
22nd February 2017 to 23rd February 2017

Oleofuels 2017
7th June 2017 to 8th June 2017

2014-2015 IUPAC Chemistry and Environment proposals
Typically $5,000-$10,000 to organize a workshop alongside a national meeting on a special topic (e.g., for making an IUPAC set of recommendations on standardization in a particular subfield). Other proposal options exist, such as publication of an academic resource/text.