I’ve read some articles about miners processing transaction once BTC is fully mined, will this happen in the current pool setup ie antpool/slush pool or do miners connect to something different
I don't think the current mining pools will be closed once all bitcoins are mined (possibly in 2140). Because the mining structure will remain as it is. It's just the mining rewards will be different and smaller because the standard block reward will be diminished. Rather, the network difficulty will be adjusted according to this so that a whole lot of people will be able to profit from bitcoin mining (it's an assumption).
So mining pools have no reason to close itself out of operation just because all bitcoins are mined.