I am getting following errors when I select the two column option for ACS document class and link my bibtexstyle bibliography. The errors don't show when I have a single column document along with the bibliography or a two column style without the bibliography.
Illegal, another \bibstyle command---line 422 of file newfile2.aux
\begin{mcitethebibliography}{38}
Try typing <return> to proceed.
If that doesn't work, type X <return> to quit.
I am working with Langmuir style (ACS). How to get my images in a single column while keeping the text in the two column format ?

\bibliographystyleline in your source (achemsoautomatically adds one). – Joseph Wright May 10 '16 at 18:38