BAB V KESIMPULAN DAN SARAN
A. Kesimpulan
1. Ekstraksi FeII-1,10-Fenantrolin menggunakan metode cloud point optimum pada konsentrasi Tween 80 antara 6x10
-5
M sampai 12x10
-5
M, dengan larutan ion logam pada pH 2, suhu pemanasan antara 65
o
C sampai 75
o
C dan waktu ekstraksi antara 30 menit sampai 75 menit dengan efisiensi ekstraksi antara
36,3 sampai 39,36. 2. Adanya logam CuII dan PbII menurunkan efisiensi ekstraksi FeII-1,10-
Fenantrolin menjadi 11,30. Efisiensi ekstraksi untuk CuII dan PbII pada spesies tunggal berturut – turut sebesar 28,61 dan 35,54 sedangkan pada
spesies bersaing berturut – turut sebesar 27,39 dan 0.
B. Saran
Penelitian selanjutnya perlu melakukan optimasi waktu pembentukan kompleks [Fephen
3
][ClO
4
]
2
sebelum ditambahkan Tween 80 agar jumlah kompleks yang terjebak pada misel Tween 80 optimum sehingga dapat diperoleh
efisiensi ekstraksi yang lebih tinggi.
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Lampiran 1. Hasil pengamatan kenaikan Tween 80 pada pipa kapliler untuk masing – masing konsentrasi dan aquadest pada pipa kapiler
h
air
cm h
Tween 80
cm h
1
cm h
2
cm h
3
cm Rata –
rata cm
[Tween 80 ] M
h
1
cm h
2
cm h
3
cm Rata – rata
cm 4x10
-6
1,10 1,10
1,10 1,10
±0,00 6x10
-6
1,20 1,20
1,20 1,20
±0,00 8x10
-6
1,30 1,30
1,20 1,27
±0,06 10x10
-6
1,30 1,20
1,40 1,30
±0,10 12x10
-6
1,30 1,30
1,40 1,33
±0,06 14x10
-6
1,30 1,30
1,30 1,30
±0,00 16x10
-6
1,30 1,30
1,20 1,27
±0,06 1,00
0,90 1,00
0,97 ±0,06
18x10
-6
1,20 1,20
1,30 1,23
±0,06
Lampiran 2. Contoh perhitungan harga tegangan permukaan Tween 80
Persamaan kenaikan pipa kapiler :
raf
Untuk h
air rata – rata
= 0,97 ±0,06 cm γ
air
= 7,12 x 10
-2
Nm pada t = 30
o
C ρ
air
= 0,996 gcm
3
pada t = 30
o
C ρ
x
= 1,08 gcm
3
untuk [Tween 80] = 4 x 10
-6
M h
x rata – rata
= 1,10 ± 0,00cm
maka γ
x
= x 7,12 x10
-2
Nm
2
= 8,76 x 10
-2
Nm
Konsentrasi yang lain dihitung dengan cara yang sama seperti di atas. γ
x
= ρ
x
h
x rata – rata
ρ
air
h
air rata - rata
γ
air
1,08 x 1,10 0,996 x 0,97
x
Lampiran 3. Contoh perhitungan Turunan I hubungan Konsentrasi Tween 80 dan tegangan permukaan
Misal : [Tween 80] 4x10
-6
= C
1
dengan γ
1
= 8,76x10
-2
Nm [Tween 80] 6x10
-6
= C
2
dengan γ
2
= 9,56x10
-2
Nm
Turunan I antara C
1
dan C
2
= median dari C
2
dan C
1
= 5x10
-6
Turunan I nilai γ
antara γ
1
dan γ
2
= γ
2
– γ
1
= 9,56x10
-2
Nm – 8,76x10
-2
Nm = 0,8 x 10
-2
Nm Konsentrasi yang lain dihitung dengan cara yang sama seperti di atas.
Lampiran 4. Data Absorbansi Fe II sebelum ekstraksi dan Absorbansi Fe II di fase kaya surfaktan pada pH larutan 2, suhu pemanasan
65
o
C, waktu ekstraksi 60 menit dan variasi konsentrasi Tween 80 6x10
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