Connection at Atatürk airport

Since the flights are with different airlines and I would need to collect luggage

Note that this only applies if it's in separate bookings. If it was a single booking, it'll be automatically checked through.

As per the other answer, to enter Turkey you can get an e-visa (on the Website or at the kiosks), using either your passport or ID card.

Since the flights are with different airlines and I would need to collect luggage do I need to go through passport control to connect to the emirates flight?

Yes, to collect baggage you must go through passport control first.

Also do I need a visa for transit?

Yes, baggage collection is a landside activity hence you will be entering Turkey and will require a visa. You are eligible for an e-Visa that you can easily get online or at kiosks at the Airport.

Your e-Visa will be

Number of Entries: Multiple-Entry

Visa Fee: Gratis (No Fee)

Hurray!

This answer relies on your statement that You would need to collect baggage. If you booked with a single booking that then used multiple codeshare airlines your baggage might be / can be checked through - please ask them about the status first. In that case you won't need to go through immigration hence no visa no baggage collection required.