bottom set, bad turn 50NL, river value????

[the machine]

villain is a obv donk at 62/5/1 but only over 44 hands, probably closer to 20 at teh time because i remember him not having any stats up on hte HUD. this turn is total garbage, and can i actually squeeze value from a worse hand, or be happy that he checked it to me and let me off the hook??

Full Tilt Poker
$0.25/$0.50 No Limit Hold'em Ring Game
6 Players
LegoPoker Hand Converter

<font color="black">Stack Sizes</font>
UTG: $50
MP: $54.20
CO: $40.80
Hero (BTN): $49.95
SB: $84.85
BB: $48.75

<font color="black">Preflop:</font> 2[img]/images/graemlins/heart.gif[/img] 2[img]/images/graemlins/diamond.gif[/img] ($0.75, 6 players)
UTG folds, MP folds, <font color="red">CO raises to $1</font>, Hero calls $1, SB folds, BB folds

<font color="black">Flop:</font> 9[img]/images/graemlins/diamond.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] 2[img]/images/graemlins/club.gif[/img] ($2.75, 2 players)
<font color="red">CO bets $2.75</font>, <font color="red">Hero raises to $10</font>, CO calls $7.25

<font color="black">Turn:</font> 9[img]/images/graemlins/diamond.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] 2[img]/images/graemlins/club.gif[/img] [8[img]/images/graemlins/diamond.gif[/img]] ($22.75, 2 players)
CO checks, <font color="red">Hero bets $16</font>, CO calls $16

<font color="black">River:</font> 9[img]/images/graemlins/diamond.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] 2[img]/images/graemlins/club.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] [4[img]/images/graemlins/spade.gif[/img]] ($54.75, 2 players)
CO checks, Hero checks???

does anyone bet here???