Even if the models turn out to be correct: There are accidents, things can break and release chemicals in other regions also typical shortcuts for cost saving are likely: Chemicals used are different than mandated to reduce costs, most of these chemicals are also patented and restricted trade secrets that have seen little unbiased research afaik.
It's similar to nuclear power. Nice on paper but if you add all real-life risks and costs and let the managers make the decisions that the engineers won't support or have scepticism about, bad things will happen.
Germany does not really need the technology and it's highly unpopular here so risking potential environmental harm is probably not worth it. The results from the USA are also rather mixed in regards to being harmless.
It's similar to nuclear power. Nice on paper but if you add all real-life risks and costs and let the managers make the decisions that the engineers won't support or have scepticism about, bad things will happen.
Germany does not really need the technology and it's highly unpopular here so risking potential environmental harm is probably not worth it. The results from the USA are also rather mixed in regards to being harmless.
Here is some data that is rather sceptical: http://www.mweimh.nrw.de/energie/_pdf_container/gutachten_ub... (german only, sorry)