AK Weird Turn Bet

[UOPokerPlayer]

Opponent is 66/24 aggressive and loose. He plays his big hands fast. I've attacked his blinds before. I think in this situation he either has 1010-KK or just some garbage so I want to extract the most value. The turn bet confused me. This isn't a bet to make me fold, so is it a value bet? Maybe he's trying to buy a free card. Regardless should I raise here and if so how much? I think once he checks the river I'm good by a lot. Is it even good to bet there if the only reasons he's checking is
1. He's given up
2. He's got me beat and going for the check raise

Maybe a really tiny bet like 30 is good here and folding to a raise.

All comments appreciated. Don't let my thought process get in your way

NL200 PP 6-Max
Hero (button) - 223
Villian (SB) - 216

Hero is dealt Ad Kc

3 folds

Hero raises to 8
Villian raises to 25
BB folds
Hero calls

Flop (51) - 66K 2 Hearts

Villian bets 30
Hero calls

Turn (110) - 5c

Villian bets 20
Hero calls

River (149) - Ah

Villian checks
Hero bets 50