I am currently writing my thesis in a twocolumn environment
For a large table i switched to onecolumn which makes it start on a newpage.
However when i wrap
tabular in a table environment I get an extra blank page before the start of the table. How can i remove this?

See the screenshot and the code below. I used tabular to create a table with specified column width. However, it fails to wrap the text. I think it is an error.