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Abstrak :
[ABSTRAK
Kombinasi proses fotodegradasi dan biodegradasi untuk eliminasi metilsikloheksana telah diinvestigasi. Komposit batu apung dengan katalis dasar titania serta komposit batu apung dengan biofilm Acinetobacter baumanii digunakan untuk mengeliminasi metilsikloheksana dalam fotobioreaktor. Katalis titania yang didopan C dan N dengan prekursor urea (C-N-TiO2) dikarakterisasi dengan SEM/EDX, FTIR, Raman Spectroskopi, dan UV-Vis DRS sebelum diimobilisasi ke batu apung dengan metode dip coating. Sedangkan karakterisasi untuk batu apung-biofilm Acinetobacter baumanii dilakukan dengan SEM, TPC, Pewarnaan gram, dan FTIR. Hasil karakterisasi menunjukkan bahwa batu apung dengan katalis dasar titania serta komposit batu apung dengan biofilm Acinetobacter baumanii telah berhasil disintesis. Metilsikloheksana yang digunakan adalah senyawa sintetis dengan konsentrasi awal 60 μmol/L (±1500 ppm). Proses foto-bio-degradasi dalam reaktor terintegrasi menunjukkan hasil uji degradasi metilsikloheksana yang lebih baik bila dibandingkan dengan fotodegradasi saja atau biodegradasi saja, yang mampu mendegradasi sebesar 72,7% selama 210 menit dengan loading 7,5% katalis C-N-TiO2 ke batu apung.

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ABSTRACT
The combination of photodegradation and biodegradation processes for elimination methylcyclohexane have been investigated. Composite pumice with titania catalysts and composite pumice with biofilms from Acinetobacter baumanii was used to eliminate methylcyclohexane in photobioreactor. Titania catalyst doped with C and N using urea precursor (C-N-TiO2) is characterized by SEM/EDX, FTIR, Raman Spectroscopy, and UV-Vis DRS before immobilized to pumice with dip coating method. While the characterization of pumice-biofilm from Acinetobacter baumanii performed with SEM, TPC, Gram Staining, and FTIR. The results showed that the pumice with titania catalysts and composite pumice with biofilms have been successfully synthesized. We used methylcyclohexane synthetic compounds with the initial concentration of 60 μmol/L (± 1500 ppm). Photo-bio-degradation results of methylcyclohexane in integrated reactor are better when compared with any photodegradation or biodegradation alone, which is able to degrade at 72,7% during 210 minutes with a loading of 7,5% C-N-TiO2 catalyst to pumice.;The combination of photodegradation and biodegradation processes for elimination methylcyclohexane have been investigated. Composite pumice with titania catalysts and composite pumice with biofilms from Acinetobacter baumanii was used to eliminate methylcyclohexane in photobioreactor. Titania catalyst doped with C and N using urea precursor (C-N-TiO2) is characterized by SEM/EDX, FTIR, Raman Spectroscopy, and UV-Vis DRS before immobilized to pumice with dip coating method. While the characterization of pumice-biofilm from Acinetobacter baumanii performed with SEM, TPC, Gram Staining, and FTIR. The results showed that the pumice with titania catalysts and composite pumice with biofilms have been successfully synthesized. We used methylcyclohexane synthetic compounds with the initial concentration of 60 μmol/L (± 1500 ppm). Photo-bio-degradation results of methylcyclohexane in integrated reactor are better when compared with any photodegradation or biodegradation alone, which is able to degrade at 72,7% during 210 minutes with a loading of 7,5% C-N-TiO2 catalyst to pumice., The combination of photodegradation and biodegradation processes for elimination methylcyclohexane have been investigated. Composite pumice with titania catalysts and composite pumice with biofilms from Acinetobacter baumanii was used to eliminate methylcyclohexane in photobioreactor. Titania catalyst doped with C and N using urea precursor (C-N-TiO2) is characterized by SEM/EDX, FTIR, Raman Spectroscopy, and UV-Vis DRS before immobilized to pumice with dip coating method. While the characterization of pumice-biofilm from Acinetobacter baumanii performed with SEM, TPC, Gram Staining, and FTIR. The results showed that the pumice with titania catalysts and composite pumice with biofilms have been successfully synthesized. We used methylcyclohexane synthetic compounds with the initial concentration of 60 μmol/L (± 1500 ppm). Photo-bio-degradation results of methylcyclohexane in integrated reactor are better when compared with any photodegradation or biodegradation alone, which is able to degrade at 72,7% during 210 minutes with a loading of 7,5% C-N-TiO2 catalyst to pumice.]

Abstrak :
Indonesia melalui akselerasi upaya penghapusan penyakit dan infeksi menular pada generasi balita sejak tahun 1995 dengan melaksanakan pekan imunisasi nasional yang pertama. Pemberian imunisasi tersebut sangat penting untuk masa depan anak-anak Indonesia, karena imunisasi dapat mencegah penyakit dan infeksi yang menular dengan cara meningkatkan kekebalan tubuh. Laboratorium Perpindahan Kalor DTM-FTUI telah mengembangkan vaccine carrier atau alat pembawa vaksin yang menggunakan elemen peltier ganda berpendingin air untuk menjaga temperatur ruang pendingin vaksin agar selalu konstan. Vaccine carrier tersebut sudah dapat bekerja pada kisaran temperatur hidup vaksin polio (2 - 8_C), akan tetapi alat ini sulit dibawa kemana-mana karena berat dan memiliki komponen tambahan berupa sistem pendingin air untuk mendinginkan sisi panas peltier. Sistem pendingin air ini memiliki pompa air, selang, dan water block yang terpisah dari vaccine carrier, sehinga membuat vaccine carrier tersebut menjadi rumit dan tidak ringkas karena memiliki banyak Komponen. Sebagai solusinya digunakanlah heatsink-fan sebagai pendingin sisi panas peltier untuk menggantikan sistem pendingin air. Penelitian yang dilakukan adalah ingin mengetahui unjuk kerja vaccine carrier apabila heatsink-fan digunakannya heatsink-fan karena bentuk dan dimensinya yang ringkas sehingga sesuai untuk aplikasi vaccine carrier yang portable. Dari pengujian yang telah dilakukan, didapat hasil penting bahwa vaccine carrier dengan peltier ganda berpendingin udara mampu mendinginkan ruang vaksin hingga dibawah 8_C dalam waktu 10 menit, dapat menjaga konstan temperatur 0_C selama lebih 3 Jam, dan memiliki desain serta unjuk kerja yang lebih baik dari vaccine carrier berpendingin air. ......Indonesia has started eradication of disease and infection on children by held Pekan Imunisasi Nasional (PIN) in 1995. Immunization can prevent children from disease and infection by raised the antibody. For supporting the national immunization. Heat Transfer Lab on Mechanical Engineering University of Indonesia has developed vaccine carrier which is an equipment/or carrying vaccines. The vaccine carrier uses water-cooled double pettier to cool the vaccine's cabin and to keep the temperature constant. The vaccine carrier has successfully worked at the temperature range of 2-8_C, which is where polio vaccines live. But this equipment is not easily portable because it is heavy and has an additional component which is the water cooling system that consists of water pump, hose, and water block that are separated from it. As a solution, heatsink-fan is used to cool the pettier's hot side as a replacement of the water cooling system. The research is to know the equipment's cooling performance if heatsink-fan is used to cool the peltier 's hot side and to compare it with water cooling system. The main consideration/or using heatsink fan is because its shape and dimension that are compact so that it is appropiate for a portable vaccine carrier. The results of the research are vaccine carrier with air-cooled double peltier can lower the vaccine cabin's temperature to under 8_C in 10 minutes, it can keep the temperature constantly at 0_C for over 3 hours, and it has better design and performance than water-cooled vaccine carrier.