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Abstrak :
[ABSTRAK
Penelitian ini mengevaluasi kinerja absorpsi gas CO2 dari campurannya dengan CH4 melalui membran kontaktor superhidrofobik. Kinerja kontaktor membran superhidrofobik ini ditinjau dari empat parameter utama dengan variasi laju alir pelarut DEA (100, 300 dam 500 mL/menit) dan jumlah serat membran kontaktor (2000 dan 8000). Hasil penelitian ini menunjukkan bahwa kenaikan laju alir pelarut DEA meningkatkan kinerja kontaktor membran superhidrofobik, dalam hal koefisien perpindahan massa, fluks dan efisiensi penyerapan CO2. Sedangkan kenaikan jumlah serat membran akan menurunkan koefisien perpindahan massa dan fluks CO2. Namun, meningkatkan efisiensi penyerapan CO2 dan acid loading. Koefisien perpindahan massa dan fluks CO2 tertinggi yang didapatkan pada penelitian ini berturut-turut adalah 2,31 x 10-4 cm/s dan 7,15 x 10-6 mmol/cm2s pada laju alir DEA 500 mL/menit dan jumlah serat membran 2000. Sedangkan efisiensi penyerapan CO2 tertinggi adalah 72% pada laju alir DEA 500 mL/menit dan jumlah serat membran 8000. ABSTRACT
This study evaluates performance of CO2 absorption from its mixture with CH4 through membran contactor superhydrophobic. Superhidrophobic membrane contactor performance is observed using four main parameters by varying the flow rate of solvent DEA (100, 300 dam 500 mL/min) and the number of fiber membrane contactors (2000 and 8000). The results showed that increasing DEA solvent flow rate increase superhidrophobic membrane contactor performance, in terms of mass transfer coefficient, flux and efficiency removal of CO2. While increasing the number of fiber membrane will reduce the mass transfer coefficient and CO2 flux. However, it will increase the efficiency removal of CO2 and acid loading. The highest mass transfer coefficient and CO2 flux obtained in this study are respectively 2,31 x 10-4 cm/s and 7,15 x 10-6 mmol/cm2s on DEA flow rate of 500 mL/min and the number of fiber membranes 2000. The highest CO2 absorption efficiency is 72% at DEA flow rate of 500 mL/min and the number of fiber membranes 8000.;This study evaluates performance of CO2 absorption from its mixture with CH4 through membran contactor superhydrophobic. Superhidrophobic membrane contactor performance is observed using four main parameters by varying the flow rate of solvent DEA (100, 300 dam 500 mL/min) and the number of fiber membrane contactors (2000 and 8000). The results showed that increasing DEA solvent flow rate increase superhidrophobic membrane contactor performance, in terms of mass transfer coefficient, flux and efficiency removal of CO2. While increasing the number of fiber membrane will reduce the mass transfer coefficient and CO2 flux. However, it will increase the efficiency removal of CO2 and acid loading. The highest mass transfer coefficient and CO2 flux obtained in this study are respectively 2,31 x 10-4 cm/s and 7,15 x 10-6 mmol/cm2s on DEA flow rate of 500 mL/min and the number of fiber membranes 2000. The highest CO2 absorption efficiency is 72% at DEA flow rate of 500 mL/min and the number of fiber membranes 8000.;This study evaluates performance of CO2 absorption from its mixture with CH4 through membran contactor superhydrophobic. Superhidrophobic membrane contactor performance is observed using four main parameters by varying the flow rate of solvent DEA (100, 300 dam 500 mL/min) and the number of fiber membrane contactors (2000 and 8000). The results showed that increasing DEA solvent flow rate increase superhidrophobic membrane contactor performance, in terms of mass transfer coefficient, flux and efficiency removal of CO2. While increasing the number of fiber membrane will reduce the mass transfer coefficient and CO2 flux. However, it will increase the efficiency removal of CO2 and acid loading. The highest mass transfer coefficient and CO2 flux obtained in this study are respectively 2,31 x 10-4 cm/s and 7,15 x 10-6 mmol/cm2s on DEA flow rate of 500 mL/min and the number of fiber membranes 2000. The highest CO2 absorption efficiency is 72% at DEA flow rate of 500 mL/min and the number of fiber membranes 8000., This study evaluates performance of CO2 absorption from its mixture with CH4 through membran contactor superhydrophobic. Superhidrophobic membrane contactor performance is observed using four main parameters by varying the flow rate of solvent DEA (100, 300 dam 500 mL/min) and the number of fiber membrane contactors (2000 and 8000). The results showed that increasing DEA solvent flow rate increase superhidrophobic membrane contactor performance, in terms of mass transfer coefficient, flux and efficiency removal of CO2. While increasing the number of fiber membrane will reduce the mass transfer coefficient and CO2 flux. However, it will increase the efficiency removal of CO2 and acid loading. The highest mass transfer coefficient and CO2 flux obtained in this study are respectively 2,31 x 10-4 cm/s and 7,15 x 10-6 mmol/cm2s on DEA flow rate of 500 mL/min and the number of fiber membranes 2000. The highest CO2 absorption efficiency is 72% at DEA flow rate of 500 mL/min and the number of fiber membranes 8000.]

Abstrak :
Penelitian ini mengevaluasi kinerja absorpsi gas CO2 melalui membran kontaktor superhidrofobik. Kinerja kontaktor membran superhidrofobik ini ditinjau dari empat parameter utama dengan variasi laju alir pelarut Air (100, 150, 200, 250, 300, 400 dan 500 mL/menit) dan jumlah serat membran kontaktor (2000, 4000 dan 6000). Hasil penelitian ini menunjukkan bahwa kenaikan laju alir pelarut Air meningkatkan kinerja kontaktor membran superhidrofobik, dalam hal koefisien perpindahan massa, fluks dan efisiensi penyerapan CO2. Kenaikan jumlah serat membran juga akan meningkatkan koefisien perpindahan massa dan fluks CO2. Koefisien perpindahan massa dan fluks CO2 tertinggi yang didapatkan pada penelitian ini berturut-turut adalah 1,69 x 10-4 cm/s dan 1,7 x 10-5 mmol/cm2s pada laju alir Air 500 mL/menit dan jumlah serat membran 6000. Sedangkan efisiensi penyerapan CO2 tertinggi adalah 29,5% pada laju alir Air 500 mL/menit juga pada jumlah serat membran 6000.

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This study evaluated the performance of absorption of CO2 through the superhydrophobic contactor membrane. Superhydrophobic contactor membrane performance is evaluated from four main parameters with the variation of solvent flow rates of water (100, 150, 200, 250, 300, 400 and 500 mL/min) and the amount of contactors membrane fibers (2000, 4000, and 6000). The results of this study indicate that the increase in the flow rate of the water solvent, increases superhydrophobic contactor membranes performance in terms of mass transfer coefficient, flux, and the efficiency CO2 absorption. The increase in the number of membrane fibers also increases the mass transfer coefficient and CO2 flux. The mass transfer coefficient and the highest CO2 flux were obtained in this study are 1.69 x 10-4 cm/s and 1.7 x 10-5 mmol/cm2s respectively when water flow rate is 500 mL/min and the amount of fiber membranes is 6000. The highest CO2 absorption efficiency is 29.5% when water flow rate is 500 mL/min and the amount of membrane fiber is 6000.

Abstrak :
Nitrogen oksida NOx merupakan salah satu gas yang sangat berbahaya karena sifatnya yang beracun. Salah satu kandungannya, yaitu Dinitrogen Monoksida merupakan gas rumah kaca yang dengan potensi pemanasan global yang sangat besar. Untuk mengatasinya, telah muncul teknologi absorpsi menggunakan kontaktor membran. Kontaktor membran juga mempunyai keunggulan seperti rasio luas kontak dan volum peralatan yang tinggi. Proses absorpsi berlangsung dengan cara melarutkannya dalam absorben yang merupakan campuran oksidator, H2O2 dan HNO3. Variabel bebas yang diuji adalah laju alir absorben antara 100 ndash; 500 cm3/menit serta jumlah serat membrane 2000, 4000, dan 6000. Pada penelitian ini diketahui bahwa nilai koefisien perpindahan massa, fluks, jumlah N2O terserap, efisiensi penyerapan, dan penurunan tekanan semakin meningkat dengan meningkatnya laju alir pelarut. Sebaliknya, jumlah N2O loading akan semakin kecil. Selain itu, nilai koefisien dan fluks perpindahan massa menurun dengan bertambahnya jumlah serat membran. Sedangkan, jumlah N2O terserap, efisiensi penyerapan dan N2O loading malah akan meningkat.

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Nitrogen oxide NOx is a dangerous gas due to its toxic nature. One of it, namely Dinitrogen Monoxide is a greenhouse gas with high global warming potential. Absorption using membrane contactros is develop to overcome these problems. Another advantages is the high ratio of contact area and equipment volume. The absorption process occurs by dissolving it in the absorbent which is a mixture of oxidizer, H2O2 and HNO3. The independent variables tested were absorbent flow rate between 100 500 cm3 min and number of membrane fibers 2000, 4000, and 6000. In this research, is obtained that the mass transfer coefficient, flux, N2O absorb, absorption efficiency, and pressure decrease is increasing as solvent flow rate increasing. Conversely, N2O loading is decreasing. In addition, coefficient and mass transfer flux value is decreasing as the increasing number of membrane fibers. Meanwhile, the N2O absorb, absorption efficiency and N2O loading is increasing.

Abstrak :
[ABSTRAK
Tujuan dari pelaksanaan penelitian ini adalah untuk menguji performa penyerapan gas CO2 dengan menggunakan kontaktor membran superhidrofobik. Adapun variasi yang diuji pada penelitian ini adalah pengaruh laju alir gas CO2 (160, 240, dan 320 mL/menit) dan jumlah serat membran kontaktor (2000, 4000, dan 6000). Pada penelitian ini, didapatkan hasil yaitu peningkatan dari laju alir gas umpan menurunkan efisiensi dari proses, namun meningkatkan kapasitas penyerapan dan koefisien perpindahan massa secara menyeluruh. Pada peningkatan jumlah membran, terjadi peningkatan untuk nilai efisiensi, kapasitas penyerapan, dan koefisien perpindahan massa secara menyeluruh. Nilai efisiensi penyerapan tertinggi tercapai sebesar 29% pada laju alir gas umpan sebesar 160 mL/menit dan jumlah serat membran sebesar 6000. Nilai koefisien perpindahan massa dan kapasitas penyerapan tertinggi adalah 1,14x10-4 cm/s dan 0.045 mmol pada laju alir gas 320mL/menit dan jumlah serat membran sebesar 6000. ABStRACT
The purpose of this experiment is to examine the performance of superhydrophobic contactor in the absorption of CO2 using water. The variation tested in this experiment is the CO2 gas flow rate (160, 240, 320 mL/min) and the number of fiber modules (2000, 4000, and 6000). The results obtained from this experiment is, the increasement of gas flow rate reduces the absorption efficiency, and increases the absorption capacity and the overall mass transfer coefficient. As the number of fibers increases, the efficiency, overall mass transfer coefficient, and absorption capacity also increases. The maximum value for efficiency is 29% and obtained for 160 mL/min gas flow rate and 6000 module fibers. The maximum value for overall mass transfer coefficient and absorption capacity are 1.14x10-4 cm/s and 0.045 mmol respectively for 320 mL/min gas flow rate and 6000 number module.;The purpose of this experiment is to examine the performance of superhydrophobic contactor in the absorption of CO2 using water. The variation tested in this experiment is the CO2 gas flow rate (160, 240, 320 mL/min) and the number of fiber modules (2000, 4000, and 6000). The results obtained from this experiment is, the increasement of gas flow rate reduces the absorption efficiency, and increases the absorption capacity and the overall mass transfer coefficient. As the number of fibers increases, the efficiency, overall mass transfer coefficient, and absorption capacity also increases. The maximum value for efficiency is 29% and obtained for 160 mL/min gas flow rate and 6000 module fibers. The maximum value for overall mass transfer coefficient and absorption capacity are 1.14x10-4 cm/s and 0.045 mmol respectively for 320 mL/min gas flow rate and 6000 number module., The purpose of this experiment is to examine the performance of superhydrophobic contactor in the absorption of CO2 using water. The variation tested in this experiment is the CO2 gas flow rate (160, 240, 320 mL/min) and the number of fiber modules (2000, 4000, and 6000). The results obtained from this experiment is, the increasement of gas flow rate reduces the absorption efficiency, and increases the absorption capacity and the overall mass transfer coefficient. As the number of fibers increases, the efficiency, overall mass transfer coefficient, and absorption capacity also increases. The maximum value for efficiency is 29% and obtained for 160 mL/min gas flow rate and 6000 module fibers. The maximum value for overall mass transfer coefficient and absorption capacity are 1.14x10-4 cm/s and 0.045 mmol respectively for 320 mL/min gas flow rate and 6000 number module.]

Abstrak :
Penyerapan gas CO2 memiliki peran yang vital dalam industri gas alam. Teknologi alternatif untuk proses penyerapan CO2 ialah kontaktor membran serat berongga. Teknologi kontaktor membran ini dapat mengatasi kelemahan yang dimiliki kolom konvensional. Namun dalam prakteknya kontaktor membran masih memiliki kekurangan seperti permasalahan pembasahan membran oleh pelarut. Oleh karena itu penelitian ini akan menguji pengaruh laju alir pelarut dan jumlah serat membran dalam kinerja penyerapan gas CO2 murni melalui kontaktor membran serat berongga dengan bahan material membran bersifat superhidrofobik. Pelarut yang digunakan dalam penelitian ini adalah larutan DEA 5% volum. Variabel bebas yang digunakan pada penelitian ini ialah laju pelarut dan jumlah serat membran. Laju pelarut yang digunakan antara 100-500 cm3/menit, sedangkan jumlah serat membran 2000, 4000 dan 6000. Setiap percobaan dilakukan pada laju gas CO2 sebesar 240 cm3/menit. Parameter kinerja perpindahan massa yang dihasilkan pada penelitian ini yaitu efisiensi penyerapan 56%, laju CO2 terabsorpsi 9x10-2 mmol/s, koefisien perpindahan massa 6x10-4 cm/s, fluks CO2 1,85x--5 mmol/cm2.s, serta acid loading 9,5x10-2.

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The absorption of CO2 gas has a vital role in the natural gas industry. A promising alternative technology that overcome the disadvantages of conventional gas absorption is hollow fiber membrane contactor. However, in practice, contactor membrane still has problem such as wetting membrane by the solvent. Therefore this study evaluates the effect of solvent flow rate and the number of fibers in pure CO2 gas absorption performance through superhydrofobic hollow fiber membrane contactor using DEA 5%-volume as solvent. The abosrbent that we used in this research is diethanolamine (DEA) with the concentration 5 %-v. Independent variables in this research are solvent flow rate and the number of fibers. Solvent flow rate that we used between 100-500 cm3/minute, and for the amount of fibers are 2000, 4000 and 6000. Each of the experiments that conducted at the CO2 flow rate 240 cm3/minute. Results show that CO2 removal efficiency is 56%, while the rate of CO2 absorption is 9x10-2 mmol/s with overall mass transfer coefficient 6x10-4 cm/s, flux of CO2 absorption is 1.85x10-5 mmol/cm2.s and the acid loading is 9.5x10-2.