If two different processes are involved then in that case two different patent applications will have to be filed by you.

Regards

Patent should be applied for each separate invention. If there is any modification or improvement in earlier patented invention then Patent of addition may be obtained which run concurrently with the main patent. 

They cannot be covered in the same patent as both have different mechanism, though achieving the same purpose.

You need to file process and product patent for the procedures separately. 

There is no possibility of two patents on the same. It is not possible. Every patent should have novelty, inventive step and utility. 

It will always be good to have two patterns for these two mechanism this will help you in case you want to sell off or going for any agreement in this regard to the products you will get a better deal and you will be left for registering another patent

It will be better you patent it differently in order to you for transfering the same or extending for royalty

An invention can be patented if it has a useful purpose, has patentable subject matter, is novel, and is non-obvious. The patent could cover a composition, production process, machine, tool, new plant species, or an upgrade to an existing invention. Inventors must meet certain government guidelines to get a patent.

No, different application will file.