Can a defaulted student loan be included in a bankruptcy if it has been purchased by another creditor?

It would be a waste of time and money. The higher education amendment act made student loans non dischargable in Banruptcy Court. You would have to prove a major financial hardship to have it considered. It's next to impossible.

A consolidation loan will allow you to get an income sensitive payment that will fit your budget, or you can file for deferment or forbearance.