%A 1757011008  MUHAMMAD ROIS ABDILLAH 
%T 
 
ADSORPSI MONOKOMPONEN DAN BIKOMPONEN ZAT PEWARNA
METIL JINGGA DAN FENOL OLEH KARBON AKTIF CANGKANG 
BUAH KARET (Hevea Brasiliensis)

%X 
 
In this research, the manufacture and characterization of activated carbon
adsorption from rubber fruit shells has been carried out. The manufacturing stage
is through physical activation, followed by chemical activation and the
characterization process. Physical activation was carried out at a temperature of
700
o
C, physico-chemical activation was carried out by drying in an oven at a
temperature of 100
o
C. The synthesized activated carbon was analyzed
proximately and characterized using a Scanning Electron Microscope (SEM) to
determine its surface morphology. Fourier Transform Infrared Spectroscopy
(FTIR) to determine the functional groups on the surface of activated carbon. The
final result of the adsorbate was characterized and analyzed using a UV-Vis
Spectrophotometer to determine changes in functional groups. The adsorption test
on activated carbon against methyl orange and phenol was carried out by testing
the pH and optimum contact time to determine the kinetics model and the
optimum adsorbate concentration to determine the pattern of adsorption
isotherms. The results of the proximate analysis showed that the value of water 
content and volatile matter content in CAF was less than in CAFK. While the
value of ash content and carbon content bound to CAF is more than CAFK. The
FTIR characterization of the adsorption results of CAF and CAFK produced a
hydroxy group (O-H), an aromatic C=C bond, a methyl group (CH3), and a C=O
carboxylic acid group. CAF Potential of Zero Charge (PZC) values at pH 6 and
CAFK pH 8. Optimum methyl orange adsorption at CAF pH 6 and CAFK pH 8,
while the optimum phenol adsorption at CAF pH 8 and CAFK pH 6. The
optimum contact time was 60 minutes with percent adsorption of phenol (CAF
94% ; CAFK 91%) and Methyl Orange (92% CAF; CAFK 94%). The optimum
concentrations were 0.4 and 0.6 grams of adsorbent. The adsorption kinetics data
tended to follow the pseudo second-order kinetic model and the adsorption
isotherm tended to follow the Freundlich isotherm pattern. 

Key Words :  Rubber fruit shells, activated carbon, characterization, adsorption 
test, methyl orange, phenol

 
Pada penelitian ini telah dilakukan pembuatan dan karakterisasi adsorpsi karbon
aktif dari cangkang buah karet. Tahap pembuatan melalui aktivasi fisika yang
dilanjutkan pada aktivasi kimia dan proses karakterisasi. Aktivasi fisika dilakukan
dengan suhu 700
o
C, aktivasi fisika-kimia dilakukan pengeringan dalam oven pada
suhu 100
o
C. Karbon aktif hasil sintesis dilakukan analisis proksimat dan
dikarakterisasi menggunakan Scanning Electron Microscope (SEM) untuk
mengetahui morfologi permukaannya. Fourier Transform Infrared Spectroscopy
(FTIR) untuk mengetahui gugus fungsi pada permukaan karbon aktif. Hasil akhir
adsorbat dikarakterisasi dan dianalisis menggunakan Spektrofotometer UV-Vis
untuk mengetahui perubahan gugus-gugus fungsi. Uji adsorpsi pada karbon aktif
terhadap metil jingga dan fenol dilakukan dengan pengujian ph dan waktu kontak
optimum untuk mengetahui model kinetika dan konsentrasi adsorbat optimum
untuk mengetahui pola isoterm adsorpsi. Hasil analisis proksimat menunjukkan
nilai kadar air dan kadar zat menguap pada CAF lebih sedikit daripada CAFK.
Sedangkan nilai kadar abu dan kadar karbon terikat pada CAF lebih banyak
daripada CAFK. Karakterisasi FTIR pada hasil adsorpsi CAF dan CAFK 

menghasilkan gugus hidroksi (O-H), ikatan C=C aromatic, gugus metil (CH
), dan
gugus asam karboksilat C=O. Nilai Potential of Zero Charge (PZC) CAF pada pH
6 dan CAFK pH 8. Adsorpsi metil jingga optimum pada CAF pH 6 dan CAFK pH
8, sedangkan adsorpsi fenol optimum pada CAF pH 8 dan CAFK pH 6. Waktu
kontak optimum adalah 60 menit dengan persen adsorpsi fenol (CAF 94% ;
CAFK 91%) dan Metil Jingga (CAF 92% ; CAFK 94%). Konsentrasi optimum
adalah 0,4 dan 0,6 gram adsorben. Data kinetika adsorpsi cenderung mengikuti
model kinetika pseudo orde dua dan isoterm adsorpsi cenderung mengikuti pola
isoterm Freundlich.     

 
Kata Kunci : Cangkang buah karet, karbon aktif, karakterisasi, uji adsorpsi, metil
jingga, fenol
3
%C UNIVERSITAS LAMPUNG
%D 2022
%I FAKULTAS MATEMATIKA DAN ILMU PENGETAHUAN ALAM 
%L eprints65649