AK HU, please help!!

1/2 at UB. Villian is UTG and is extremely loose, and strangely aggressive at times. Hero is UTG+1. Please help me understand where and if I went wrong on the hand.

Pre-Flop:

Villian limps, I raise with A [img]/images/graemlins/diamond.gif[/img] K [img]/images/graemlins/spade.gif[/img], everybody folds, villian calls.

Flop: Q [img]/images/graemlins/diamond.gif[/img]10 [img]/images/graemlins/diamond.gif[/img] 9 [img]/images/graemlins/heart.gif[/img]

Villian checks, Hero bets, Villian raises, Hero calls

Turn: K [img]/images/graemlins/club.gif[/img]

Villian checks, Hero checks?

River: Q [img]/images/graemlins/club.gif[/img]

Villian bets, Hero calls?