Opponent seems fairly loose and aggressive, raising about 1/5 of his hands. I don't know a great deal about how he plays postflop, as I was 8-tabling, but his flop call seems like perhaps a draw, weak king, or high-middle pair below kings. Turn bet good or bad?

PokerStars No-Limit Hold'em, $2 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

UTG ($222.80)
MP ($245)
Hero ($200)
Button ($405.80)
SB ($173.40)
BB ($267.70)

Preflop: Hero is CO with A, 9.
UTG raises to $8, 1 fold, Hero raises to $24, 3 folds, UTG calls $16.

Flop: ($51) 3, 2, K (2 players)
UTG checks, Hero bets $30, UTG calls $30.

Turn: ($111) 2 (2 players)
UTG checks, Hero bets $70