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ABSTRAK40-60% air bersih yang digunkan pada proses pengolahan minyak bumi
menjadi limbah cair yang berbahaya bagi lingkungan. Penelitian ini bertujuan
menganalisis efisiensi dan kinetika penyisihan COD, fenol, sulfida, amonia limbah
cair industri perminyakan pada pengolahan adsorpsi karbon aktif tempurung kelapa
dan biofilter serabut kelapa. Air limbah berasal dari PT.Pertamina RU-III. Pada
percobaan batch adsorpsi, didapatkan waktu kontak optimum 95 menit dengan
dosis adsorben 40 g/l serta kinetika penyisihan COD dan fenol yakni kCOD=0,00696
g/mg.min dan kfenol=1,243 g/mg.min. Adsorpsi dapat menyisihkan COD 97-48%,
fenol 100-56%, amonia 100-71%, sulfida 100-5,15% dalam waktu operasi 235 jam.
Sementara itu, pengolahan biofilter dapat menyisihkan COD 52-87%%, fenol 45-
99%, amonia 100%, sulfida 100% dengan HLR 3,65 m3/m2.day. Hasil permodelan
kinetika menunjukkan bahwa HLR berpengaruh pada pengolahan biofilter.
Sedangkan pada penggabungan npengolahan adsorpsi-biofilter, biofilter tidak
menunjukkan hasil optimum karena rentang optimal OLR biofilter yaitu 0,4-2,6 kg
COD/m3.day.
ABSTRACTApproximately 40%-60% of raw water is wasted into wastewater in oil
refinery that can be hazardous to the environment. The purpose of this research was
to analyze the efficiency and kinetic study of COD, phenol, sulfide, ammonia
degradation in refinery wastewater by using coconuts shell activated carbon in
adsorption unit and coconut fiber in biofilter unit. Wastewater sample was
conducted from PT.Pertamina RU-III. By the end of research, the optimum
condition of batch adsorption obtained which hit 95 minutes in contact time and 40
g/l in adsorption dose. Moreover, the kinetic of COD and phenol degradation
consecutively sat on kCOD=0,00696 g/mg.min and kfenol=1,243 g/mg.min.
Furthermore, column adsorption that operated for 235 hours removed 97%-48%of
COD, 100%-56% of phenol, 100%-71% of ammonia, 100%-5,15% of sulfide. In
addition, biofilter unit could eliminate 52-87% of COD, 45-99% of phenol, 100%
of ammonia and sulfide by using 3,65 m3/m2.day as the HLR. Based on the kincetic
model, HLR have influence in biofilter COD and phenol removal. However, in the
combination of adsorption and biofilter process, the biofilter unit could not achieve
the optimum outcome because the OLR not in the range of 4-2,6 kg COD/ m3.day., Approximately 40%-60% of raw water is wasted into wastewater in oil
refinery that can be hazardous to the environment. The purpose of this research was
to analyze the efficiency and kinetic study of COD, phenol, sulfide, ammonia
degradation in refinery wastewater by using coconuts shell activated carbon in
adsorption unit and coconut fiber in biofilter unit. Wastewater sample was
conducted from PT.Pertamina RU-III. By the end of research, the optimum
condition of batch adsorption obtained which hit 95 minutes in contact time and 40
g/l in adsorption dose. Moreover, the kinetic of COD and phenol degradation
consecutively sat on kCOD=0,00696 g/mg.min and kfenol=1,243 g/mg.min.
Furthermore, column adsorption that operated for 235 hours removed 97%-48%of
COD, 100%-56% of phenol, 100%-71% of ammonia, 100%-5,15% of sulfide. In
addition, biofilter unit could eliminate 52-87% of COD, 45-99% of phenol, 100%
of ammonia and sulfide by using 3,65 m3/m2.day as the HLR. Based on the kincetic
model, HLR have influence in biofilter COD and phenol removal. However, in the
combination of adsorption and biofilter process, the biofilter unit could not achieve
the optimum outcome because the OLR not in the range of 4-2,6 kg COD/ m3.day.]