Bacillusacidiceler is the correct name if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Bacillus.
The noun acidum is a "N.L. n. (from L. adj. acidus -a -um), not a "L. n." as cited in the paper by Peak et al. 2007.Publication:
Euzeby JP. List of Bacterial Names with Standing in Nomenclature: a folder available on the Internet. Int J Syst Bacteriol 1997; 47:590-592.