- Yara Marine sees 80-90% open loop scrubbers feasible, though a growing number of countries and regions around the world are introducing bans on the same.
- Some studies shown no real environmental impact by open loop bans.
- Few maintain that the effects of wash water have yet to be assessed or may even be harmful, or for reasons other than environmental concern.
- Open loop scrubbers, do not perform effectively in water with low alkalinity, so systems supplying alkali in a closed loop are required.
http://mfame.guru/open-loop-scrubbers-viable-for-80-90-of-global-shipping/