data pengamatan inhibitor aerasi
TRANSCRIPT
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LABORATORIUM KOROSI
SEMESTER GENAP TAHUN AJARAN 2014/2015
MODUL :Inhibitor Korosi
PEMBIMBING : Ir.Retno In!rt"# MT.
Oleh :
Kelompok : $III %De&!'!n(
Nama : 1. )*nne R!'+!e&! NIM 1,142402-
2. Le"n! !+*!n" NIM 1,142402
,. R"+! N D!r!!n NIM 1,142403
Kelas : ,A Ten" ""! Pro67" Ber7"+
PROGRAM STUDI DIPLOMA I T!KNIK KIMIA PRODUKSI B!RSI"
JURUSAN TENI IMIA
POLITENI NEGERI BANDUNG
#$%&
Tan''al Praktik(m : 2, De7e8er 2015
Tan''al Pen)erahan : 15 J!n6!r" 2019
*Laporan+
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BAB I
P!NDA"ULUAN
% Latar Belakan'
Unt6 e&"n6n" o'onen 76!t6 &o! en!n en6n!!n "n+"8"tor. B!+!n "n+"8"tor
en6nt6n!n 6nt6 en!n!n" &o!;&o! 8e7" !ren! !'!t en+!8!t &!
!&! &!r6t!n N!&
; M!+!7"7! !'!t en+"t6n &!
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BAB II
TIN-AUAN PUSTAKA
#.% Lan/asan Teori
In+"8"tor !!&!+ >!t or!n" !6'6n !nor!n" *!n "t!8!+!n e!&! 76!t6 &"n6n!n 6nt6
enen!&"!n 'ro7e7 oro7". S"=!t;7"=!t 7e86!+ e&etro&"t !'!t "68!+ 6nt6 e8!t!7" !re7"="t!7
ter+!!' 'er6!!n &o!. Ion;"on *!n '!&"n !re7"= *!n !'!t en*er!n 'er6!!n &o! 8!
!!&!+ "on;"on 76&=!t# t"o76&=!t# t"o7"!n!t# !n &or"!. Unt6 en+!8!t "on;"on !re7"= ter7e86t !'!t
"t!8!+!n "n+"8"tor n"tr"t 7e+"n! !'!t en6r!n" &!!t;>!t *!n "t!8!+!n e !&! e&etro&"t# 7e+"n! !'6
!n!+!n ter
Unt6 "n+"8"tor !no" nono7"!tor n!no7"!tor *!"t6 o&"8!t# 7"&"!t# =o7=!t# !n 8or!@/!!n*!
"n+"8"tor !no" en+!7"&!n 7e&!'6t '!7"= t"'"7 '!! 'er6!!n !no! 7e+"n! en+!8!t &!
!ren! '!! !er!+ !to" ter8ent6 &o! +"ro7"! %MOH( *!n 76!r &!r6t !n ene'e& 6!t '!!
'er6!!n &o! 7e+"n! en+!8!t &!
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U6r &6!7 'er6!!n !7"n;!7"n '&!t 8!
er"n!n !n t"8!n !7"n;!7"n '&!t 8!
6?" '&!t 8!
Men!'e&!7 7e6! '&!t 8!
3,56 gr NaCl 1000 ml Aquades
Diaduk hingga homogen
BAB III
P!R0OBAAN
1.% Alat Dan Bahan
ALAT BA"AN
Ge&!7 '&!7t" 250 & 86!+ L!r6t!n N!& ,#59 '&Ge&!7 ""! 250 & 4 86!+ L!r6t!n !&"6 8"ro!t %2r2O-( 5
L!86 t!!r 1000 & L!r6t!n 8or!@ %N!2B4O-( 1
Ge&!7 66r 100 & L!r6t!n !'6r %!O( 1
P"'et 66r 25 & A6!e7
Bo&! "7!' P&!t 8!
B!t!n 'en!6 ert!7 !'e&!7
S'!t6&! ert!7 !&66n"6 =o"&
ert!7 7!r"n
1.# Lan'kah Ker,a
1.#.% Persiapan Ben/a Ker,a
1.#.# Persiapan lar(tan
1.#.#.% Lar(tan Na0l 12&3 'pl
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2,5 gr K2Cr2O7 50 ml Aquades
Diaduk hingga homogen
0,5 gr Na2BO7 50 ml Aquades
Diaduk hingga homogen
0,5 gr CaO 50 ml Aquades
Diaduk hingga homogen
1.#.#.# Lar(tan Kali(m bikromat &4
1.#.#.1 Lar(tan Bora5 %4
1.#.#6 Lar(tan Kap(r %4
1.1 Proses Korosi
Sarin' lar(tan
/en'an kertas sarin'
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Me!76!n 5 & &!r6t!n !&"6 8"ro!t e !&! e&!7 '&!t" %e# =(
Me!76!n 5 & &!r6t!n 8or!@ 1 e !&! e&!7 '&!t" %?# (
Me!76!n 5 & &!r6t!n !&"6 8"ro!t 5 e !&! e&!7 '&!t" %!# 8(
Me!76!n 100 & &!r6t!n N!& ,#59 '& e !&! 7et"!' e&!7 '&!7t"
%!# 8# ?# # e# =# # +(
Men*"!'!n e'!&!n 86!+ e&!7 '&!7t" *!n 76!+ "8er7"+!n
Logam 1 Logam 2 Logam 3 Logam 4
NaCl + K2Cr2O7NaCl NaCl + Na2B4O7NaCl + CaO
T"8!n !7"n;!7"n '&!t 8!
Ber7"+!n '&!t 8!
1.6 Tanpa Aerasi
1.6.#6 Aerasi
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Logam 5 Logam 6 Logam 7 Logam 8
NaCl + K2Cr2O7NaCl NaCl + Na2B4O7NaCl + CaO
T"8!n !7"n;!7"n '&!t 8!
Ber7"+!n '&!t 8!
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BAB I
"ASIL DAN P!MBA"ASAN
6.% Data Pen'amatan
6.%.% Pen'amatan 7isik
6.%.%.% Pen'amatan Tanpa Aerasi
NoL"n6n!n
E&etro&"te!!!n A!& Pen!!t!n e!!!n Ter!+"r Pen!!t!n
1N!& t!n'!
!er!7"
T"! ter
teroro7" *!"t6 ter!'!t
&!'"7!n 8er!rn! ?o&!t !n
!! 7e""t !rn! +"
'!! 7e8!"!n &o! !n
!!n*! en!'!n;en!'!n
e?"& +!7"& !r" oro7"
2
N!& C
ro!t t!n'!
!er!7"
T"! ter
teroro7" *!"t6 ter!'!t
8!n*! en!'!n;en!'!n
*!n ene'e& "7e"t!r
&o! !n e86!t er6+
&!r6t!n 7ert! !!n*!
e&e86n "7e"t!r &o!
,
N!& C
8or!@ t!n'!
!er!7"
T"! ter
teroro7" *!"t6 ter!'!t
&!'"7!n !rn! ?o&!t
e+"t!!n "7e&6r6+
'er6!!n &o! !n 7ert!
&!r6t!n en
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4N!& C !O
t!n'! !er!7"
T"! ter
teroro7" *!"t6 ter!'!t
&!'"7!n 8er!rn! +"t!
"7e8!"!n 'er6!!n
&o! !n 7ert! &!r6t!n
en
6.%.%.# Pen'amatan Den'an Aerasi
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6.%.% Data Perhit(n'an
No.
Lo'a
m
L(as Perm(kaan
%?2(
Berat A8al
%r(
Berat Akhir
%r(
9
%r(!lektrolit
Non Aerasi
1. 20.6 3.-9 3.-, 0.0, N!& C !O
2. 21.4 10.19 10.14 0.02 N!& C ro!t
,. 21.6 10.,1 10.2- 0.04 N!& C 8or!7
4. 22.4 10.0 10.04 0.04 N!&
Aerasi
5. 21.2 10.14 10.12 0.02 N!& C !O
9. 21.40 10.23 10.2, 0.09 N!& C ro!t
-. 21.40 10.1 10.1, 0.05 N!& C 8or!7
. 21.2 10.2- 10.2, 0.04 N!&
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6.# "asil Perhit(n'an
6.# Perhit(n'an La,( Korosi
L!
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No E&etro&"t L6!7 Per6!!n
%?2(
)
%r(
Den7"t!7
% gr /cm3
(
t
%*e!r(
r
%?/*e!r(
r
%'*(
T!n'! Aer!7"
1 N!& C !O 20.90 0.0, -.9 0.0,,59 0.00399114 1.301-3,,
2 N!& C ro!t 21.40 0.02 -.9 0.0,,59 0.0091333 1.22049-1
, N!& C 8or!7 21.90 0.04 -.9 0.0,,59 0.0122515 2.41,,915
4 N!& 22.40 0.04 -.9 0.0,,59 0.01149,3 2.,,139-
Aer!7"5 N!& C !O 21.2 0.02 -.9 0.0,,59 0.00,02-5 1.1393-152
9 N!& C ro!t 21.4 0.09 -.9 0.0,,59 0.0032945- ,.991,3044
- N!& C 8or!7 21.4 0.05 -.9 0.0,,59 0.00--204 ,.05115-
N!& 21.2 0.04 -.9 0.0,,59 0.00905-5 2.,3,34,0,
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!3 "en#a$ian Da%a
0
0.5
1
1.5
2
2.5
3
3.5
4
AERASI
TANPA AERASIla$u korosi &m'#(
G!8!r 1. Gr!=" L!Ano!: e e2CC 2e;
!to!: 2H2O C 2e; 2OH;C H2
M!! "on e2C!!n 8er"!t!n en!n "on OH ;!n e8ent6 &o! +"ro7"! 7e76!" re!7"
8er"6t:
e2C%!( C 2OH;%!( e%OH(2%!(
e6"!n e8ent6 en!'!n 8er6'! !r!t# re!7"n*! !!&!+:
e%OH(2%!( C H2O e2O, . @H2O
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P!! !t! 'en!!t!n# !'!t "&"+!t 8!+! 8e7" *!n te&!+ " "!!n !&! &!r6t!n N!&
8er68!+ en
"6n!!n '!! 'r!t"6 *!"t6 ?!'6r!n 8e7" en!n !r8on 7e+"n! !r8on *!n teroro7"
en
ro!t er6'!!n "n+"8"tor !no" o7"!tor. ro!t er6'!!n "n+"8"tor *!n
e!7"=!n !no! en!n re!7" reo7 *!n ter
O7"!7": 2e C 2H2O e 2O,C 9HCC 9e ;
Re67": 2rO4;C 10HC C 9e ; r2O, C 5H 2O
Se8!!" "n+"8"tor !no"# 7en*!! ro!t en6r6n!n 'oten7"!& &o! 8!
8er&!n76n. Se&!"n "t6# ter!'!t
en6r6n!n &!
8e!rn! +"t!. In+"8"tor !O "n" en68!+ O2*!n !re7"= "68!+ en
t"! !re7"=. !O en!n !"r !'!t e8ent6 !%OH(27e76!" en!n 'er7!!!n re!7" 8er"6t:
!O C H2O !%OH(2!%OH(2C H2O, !%HO,(2C2H2O
In+"8"tor !to" "n" !!n &!n76n e8!! &o! e e !er!+ "6n. L!
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en!n 8or!@ *!n t"! "!er!7". !n6n!n o7"en '6n e'en!r6+" &!
e!n"7e 7e'ert" 8er"6t "n":
N!&%!(N!C
%!(C &;%!(
Ion &; er6'!!n 7!&!+ 7!t6
en+!8!t !t!6 e'er&!8!t 76!t6 re!7" ""!. Se!n!n "n+"8"tor oro7"
!!&!+ 76!t6 >!t ""! *!n 8"&! "t!8!+!n e!&! 76!t6 &"n6n!n# !'!t
en6r6n!n &!
ro!t 7e8!!" "n+"8"tor !no" 7ert! 8or!7 !n !'6r 7e8!!" "n+"8"tor !to".
In+"8"tor;"n+"8"tor ter7e86t "t!8!+!n en!n o&6e *!n 7!! e !&! &!r6t!n
N!& " &"n6n!n &o! 8!
Sete&!+ ""!!n 7e&!! t6!!n r67! et"! ter
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Ber!7!r!n !t! 'en!!t!n !n 'eno&!+!n !t!# &!
Se?!r! e7e&6r6+!n# n"&!" &!
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BAB *
K+-."/AN
; M!+!7"7! !'!t en
!&!
&!r6t!n N!&
; M!+!7"7!
!'!t
en+"t6n
&!
1 N!& C !O 14 1.167152
2 N!& C ro!t 14 3.6613044
, N!& C 8or!7 14 3.0511587
4 N!& 14 2.334303
T!n'! !er!7"
5 N!& C !O 14 1.017833
9 N!& C ro!t 14 1.22046871- N!& C 8or!7 14 2.41833615
N!& 14 2.33167
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0
0.5
1
1.5
2
2.5
3
3.5
4
AERASI
TANPA AERASIla$u korosi &m'#(
N!t"n# A# Dr7. MT. D. 2002.FTen" Penen!&"!n oro7"F. J6r67!n Ten" ""!# Po&"ten" Neer"
B!n6n.