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All Journal Reaktor Jurnal Teknik Kimia USU Prosiding Semnastek Sriwijaya International Seminar on Energy-Environmental Science and Technology Communications in Science and Technology Jurnal Purifikasi Jurnal Teknik Kimia Indonesia Jurnal Teknik Kimia USU Makara Journal of Science Makara Journal of Technology
Tania Surya Utami
Departemen Teknik Kimia, Fakultas Teknik, Universitas Indonesia, Depok 16424, Indonesia
Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Interesterifikasi minyak kelapa sawit dengan metil asetat untuk sintesis biodiesel menggunakan candida rugosa lipase terimobilisasi Heri Hermansyah; Septian Marno; Rita Arbianti; Tania Surya Utami; Anondho Wijanarko
Jurnal Teknik Kimia Indonesia Vol 8, No 1 (2009)
Publisher : ASOSIASI PENDIDIKAN TINGGI TEKNIK KIMIA INDONESIA (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jtki.2009.8.1.5

Abstract

Palm oil interesterification with methyl acetate for biodiesel synthesis using immobilized Candida rugosa lipaseBiocatalyst is a promising alternative catalyst for synthetic biodiesel because it has capability to improve conventional catalyst weakness, such as product purification and undesired side products. However, biocatalyst is easy to be deactivated by alcohol. Therefore, in this research, new method is developed to maintain the activity and stability of biocatalyst during reaction. In this paper, the experimental results of non-alcohol route synthesis of biodiesel using immobilized candida rugosa lipase in zeolit through adsorption method were reported. Methyl acetate as alkyl acceptor was reacted with triglyceride from palm oil in batch reactor. The analytical results from HPLC showed that trioleat convert up to 82% under the condition of 4%-wt substrate of the biocatalyst concentration and oil/alkyl mole ratio equal to 1/12 in 50 hour reaction. The effects of reactant ratio, biocatalyst concentration on concentration profile of tri-, di-, mono-gliceryde, and biodiesel were also observed. Stability test indicated that the activity of the immobilized biocatalyst still remained active for three reaction cycles.  Michaelis-Menten mechanism was used for derivation kinetic reaction equation to describe the behaviour of biodiesel production. Keywords: Biodiesel, interesterification, Candida rugosa lipase, non-alcohol route, immobilized. AbstrakSaat ini riset sintesis biodiesel menggunakan biokatalis sangat menjanjikan karena mampu memperbaiki kelemahan katalis alkali, yaitu kemudahan pemisahan produk dan kemampuan dalam mengarahkan reaksi secara spesifik tanpa adanya reaksi samping yang tidak diinginkan. Namun, biokatalis mudah terdeaktivasi dalam lingkungan beralkohol. Oleh karena itu, dalam riset ini diusulkan untuk melakukan sintesis biodiesel melalui rute non-alkohol untuk menjaga agar aktivitas dan stabilitas biokatalis tetap tinggi selama reaksi berlangsung. Dalam makalah ini akan disajikan hasil penelitian sintesis biodiesel rute non-alkohol menggunakan Candida rugosa lipase yang diimobilisasi dalam zeolit melalui metode adsorpsi dengan mereaksikan metil asetat sebagai penyuplai gugus alkil dengan trigliserida dari minyak kelapa sawit dalam reaktor batch. Hasil analisis HPLC menunjukkan bahwa lebih dari 82% rantai asam lemak dari trigliserida minyak kelapa sawit berhasil dikonversikan menjadi biodiesel pada kondisi konsentrasi biokatalis sebesar 4%-wt substrat dan rasio mol minyak/alkil sebesar 1/12 selama 50 jam reaksi. Pengaruh rasio reaktan, konsentrasi biokatalis terhadap profil konsentrasi dari tri-, di-, mono-gliserida serta biodiesel juga diselidiki. Uji stabilitas menunjukkan bahwa biokatalis terimobilisasi ini masih memiliki aktivitas untuk tiga kali siklus reaksi. Mekanisme Michaelis-Menten digunakan untuk menurunkan persamaan kinetika reaksi yang mampu menggambarkan perilaku produksi biodiesel yang dihasilkan.Kata kunci: biodiesel, interesterifikasi, Candida rugosa lipase, rute non alkohol, imobilisasi
Produksi pelengkap nutrisi dari mikroalga laut Spirulina platensis dan Botyrococcus braunii Rita Arbianti; Sri Amini; Tania Surya Utami
Jurnal Teknik Kimia Indonesia Vol 11, No 5 (2013)
Publisher : ASOSIASI PENDIDIKAN TINGGI TEKNIK KIMIA INDONESIA (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jtki.2013.12.2.3

Abstract

Production of nutritional supplements from Spirulina platensis and Botyrococcus Braunii marine microalgae.The low level of health of pregnant women is one of the results from the deficiency of omega-3 and omega-6 fatty acids in Indonesia. Giving supplement containing DHA, EPA, and AA, can solve the problem.  Usually, these nutritional supplements are produced from marine fish oil. However, this source has several deficiencies that influence the quality of the fatty acid produced. Therefore, alternative sources of oil need to be found that can replace fish oil to produce DHA, EPA, and AA. One of the very potential sources is heterotrophic cultivated microalgae. In this study, microalgae from species Spirulina platensis and Botyrococcus braunii collected from Research Center for Marine and Fisheries Product Processing and Biotechnology in Jakarta, were cultivated. Once microalgae is cultivated autotrophically, the culture were transformed to heterotrophic condition by adding 0.5 g/L glucose solution. Results showed that lipid yield from S.platensis and B. braunii were 5.297 and 0.173 (%-w dry biomass), respectively. Composition of DHA, EPA and AA from S.platensis and B.braunii oils were 0.006, 0.002, and 0.001 (%-w of lipid), respectively.Keywords: Spirulina platensis, Botryococcus braunii, heterotroph, microwave, microalgae AbstrakSalah satu dampak kekurangan asam-asam lemak omega-3 dan omega-6 di Indonesia adalah rendahnya tingkat kesehatan ibu hamil. Pemberian pelengkap nutrisi yang mengandung DHA, EPA dan AA dapat menjadi solusi permasalahan tersebut. Pada umumnya suplemen tersebut diperoleh dari minyak ikan laut, namun sumber ini memiliki beberapa kekurangan yang mempengaruhi kualitas asam lemak yang dihasilkan, sehingga diperlukan pengganti minyak ikan laut sebagai sumber utama DHA, EPA dan AA. Salah satu sumber pelengkap nutrisi yang sangat potensial adalah mikroalga yang dikultivasi secara heterotrof. Pada penelitian ini dilakukan kultivasi mikroalga  spesies Spirulina platensis dan Botyrococcus braunii yang dikoleksi oleh Balai Besar Bioteknologi dan Perikanan di Jakarta. Kultivasi masing-masing mikroalga tersebut mula-mula dilakukan secara normal (autotrof), kemudian dikondisikan menjadi heterotrof dengan pemberian glukosa 0,5 g/L. Hasil ekstraksi dengan gelombang mikro  menunjukkan  bahwa S. platensis dan B. braunii yang dikultivasi secara heterotrof memiliki kandungan minyak berturut-turut sebesar 5,297 dan 0,173 %-b (berdasarkan biomassa kering). Kandungan DHA, EPA, dan AA dalam minyak dari kedua mikroalga tersebut adalah  berturut-turut sebesar 0,006, 0,002, dan 0,001 %-massa relatif terhadap minyak.Kata kunci: Spirulina platensis, Botryococcus braunii, heterotrof, gelombang mikro, mikroalga
Transesterifikasi parsial minyak kelapa sawit dengan etanol pada pembuatan digliserida sebagai agen pengemulsi Rita Arbianti; Tania Surya Utami; Heri Hermansyah; Ira Setiawati; Eki Listya Rini
Jurnal Teknik Kimia Indonesia Vol 8, No 1 (2009)
Publisher : ASOSIASI PENDIDIKAN TINGGI TEKNIK KIMIA INDONESIA (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jtki.2009.8.1.6

Abstract

Partial transesterification of palm oil with ethanol in diglyceride production as emulsifierHigh growth rate of palm oil production has encouraged palm diversification to be other products with higher economic value, which one of them is emulsifier. Emulsifier based on vegetable oil is biodegradable so they won’t soil our environment. Besides that, its continuity of provisioning is also ensured because it is a renewable resource. In production of emulsifier based on palm oil, transesterification reaction is a first step that influences quality of emulsifier produced. The aim of this research is to determine the condition of palm oil partial transesterification. The partial transesterification process used NaOH as catalyst and palm oil. Variables varied were percent weight of NaOH (0.1, 0.2, 0.3, and 0.4 {mole NaOH/kg oil}), transesterification temperature (40, 50, 60, and 70oC), reaction time (15, 20, 25, and 30 minutes), ratio of reactant (1:3, 1:4, 1:5, and 1:6{mole oil:mole ethanol}),  to discuss these effects to diglyceride product activity. Diglyceride product was tested by its ability as emulsifier in system stability of oil/water emulsion and to decrease surface tension of water. Result of this research indicated that diglyceride product has optimum declining of surface tension of water on percent weight of NaOH of 0.3 mole NaOH/kg oil, transesterification temperature of 50 oC, reaction time of 30 minutes, and ratio of reactant of 1:6 mole oil: mole ethanol.Keywords: diglyceride, emulsifier, NaOH, palm oil, transesterification. AbstrakLaju pertumbuhan produksi minyak kelapa sawit yang tinggi mendorong perlunya diversifikasi minyak kelapa sawit menjadi produk lain dengan nilai ekonomis tinggi, salah satunya adalah sebagai agen pengemulsi. Agen pengemulsi yang dibuat dari minyak nabati bersifat biodegradable, sehingga tidak mencemari lingkungan, dan kesinambungan pengadaannya terjamin karena berasal dari sumber daya alam yang dapat diperbaharui. Dalam produksi agen pengemulsi berbahan baku minyak kelapa sawit, reaksi transesterifikasi merupakan tahapan awal yang akan mempengaruhi kualitas produk yang dihasilkan. Penelitian ini bertujuan untuk mengkaji kondisi transesterifikasi parsial minyak kelapa sawit. Proses transesterifikasi menggunakan NaOH sebagai katalis dan minyak kelapa sawit. Variabel yang divariasikan untuk mengkaji pengaruhnya terhadap kinerja produk digliserida yang dihasilkan adalah persen berat katalis NaOH (0,1, 0,2, 0,3, dan 0,4 {mol NaOH/kg minyak}), suhu transesterifikasi (40, 50, 60, dan 70 oC), waktu transesterifikasi  (15, 20, 25, dan 30 menit), dan rasio reaktan (1:3, 1:4, 1:5, dan 1:6 {mol minyak:mol etanol}). Produk digliserida diuji kemampuannya sebagai agen pengemulsi dalam menurunkan tegangan permukaan air, serta dalam menjaga kestabilan emulsi minyak/air. Hasil penelitian menunjukkan bahwa produk digliserida memiliki kemampuan menurunkan tegangan permukaan air optimum pada persen berat katalis NaOH sebesar 0,3 mol NaOH/kg minyak, suhu transesterifikasi 50 oC, waktu reaksi 30 menit, dan rasio reaktan 1:6 mol minyak:mol etanol.Kata kunci: agen pengemulsi, digliserida, minyak kelapa sawit, NaOH, transesterifikasi.
Sintesis biodiesel rute non-alkohol menggunakan Candida rugosa lipase dalam bentuk tersuspensi Heri Hermansyah; Septian Marno; Rita Arbianti; Tania Surya Utami; Anandho Wijanarko
Jurnal Teknik Kimia Indonesia Vol 8, No 2 (2009)
Publisher : ASOSIASI PENDIDIKAN TINGGI TEKNIK KIMIA INDONESIA (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jtki.2009.8.2.1

Abstract

Non-alcoholic route biodiesel synthesis using suspended Candida rugosa lipaseBiodiesel synthesis using biocatalyst can improve the disadvantage of alkali catalyst. Biocatalysts are not homogeneously mixed, so its separation is easy and it is also able to direct the reaction specifically without any unwanted side reactions. However, the application of biocatalysts in alcoholic environment degrades the biocatalyst quickly, and its stability suffers. To solve this problem, this research proposes to perform biodiesel synthesis through a non-alcohol route so that the activity and stability of the biocatalyst can be preserved. The biocatalyst used was Candida rugosa lipase in suspended form. Methyl acetate which served as alkyl group source was reacted with triglycerides from palm oil. The reaction was performed in a batch reactor, and HPLC was used to analyze reactants and product concentrations. Research results indicated that more than 86% of fatty acid chains from the palm oil triglycerides were converted to biodiesel at a biocatalyst concentration of 4 %-wt of the substrate, oil:alkyl molar ratio of 1:12, and reaction period of 50 hours. Furthermore, the kinetic data obtained using suspended enzyme, were also shown by concentration profile of tri-, di-, monoglycerides and biodiesel versus time in 50 hours reaction time.Keywords: biodiesel synthesis, interesterification, Candida rugosa lipase, non-alcohol route, triglycerideAbstrakSintesis biodiesel menggunakan biokatalis mampu memperbaiki kelemahan katalis alkali, yaitu tidak bercampur homogen, sehingga pemisahannya mudah dan mampu mengarahkan reaksi secara spesifik tanpa adanya reaksi samping yang tidak diinginkan. Namun penggunaan biokatalis di lingkungan beralkohol menyebabkan biokatalis terdeaktivasi secara cepat dan stabilitasnya menjadi buruk. Untuk menyelesaikan masalah tersebut, dalam riset ini diusulkan melakukan sintesis biodiesel melalui rute non-alkohol agar aktivitas dan stabilitas biokatalis tetap tinggi. Biokatalis yang digunakan adalah Candida rugosa lipase dalam bentuk tersuspensi. Metil asetat sebagai pensuplai gugus alkil direaksikan dengan trigliserida dari minyak kelapa sawit.  Reaksi dilakukan dalam reaktor batch dan HPLC digunakan untuk menganalisa reaktan dan produk. Hasil penelitian menunjukkan bahwa lebih dari 86% rantai asam lemak dari trigliserida minyak kelapa sawit berhasil di konversikan menjadi biodiesel pada kondisi konsentrasi biokatalis sebesar 4 %-wt substrat, rasio mol minyak:alkil sebesar 1:12 selama 50 jam reaksi. Selanjutnya, data kinetika menggunakan enzim tersuspensi juga ditunjukkan melalui profil konsentrasi tri-, di-, mono, dan biodiesel  terhadap waktu  selama 50 jam.Kata Kunci: sintesis biodiesel, interesterifikasi, Candida rugosa lipase, rute non-alkohol, trigliserida
MODEL ADSORPSI LANGMUIR GAS DINITROGEN MONOKSIDA DALAM SISTEM BIOFILTER DENGAN MEDIUM PUPUK KOMPOS Tania Surya Utami; Josia Simanjuntak; Heri Hermansyah; Mohamad Nasikin
Reaktor Volume 13, Nomor 3, Juni 2011
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (911.146 KB) | DOI: 10.14710/reaktor.13.3.172-177

Abstract

 LANGMUIR ADSORPTION MODEL FOR DINITROGEN MONOXIDE IN BIOFILTER SYSTEM USING COMPOST FERTILIZER MEDIUM. Nitrous oxide (N2O) is mostly emitted from various industrial processes and agricultural activities. This gas causes serious environmental problems and is considered as a dangerous pollutant. In the past, traditional control technologies, such as Selective Catalytic Reduction (SCR) and Selective Non-Catalytic Reduction (SNCR), were applied to control N2O emissions in some industries. However, these two processes required high temperatures and the use of catalysts. Economic and technical constraints in SCR and SNCR methods motivated researchers to develop new, cost-effective processes to remove N2O. Biofiltration is an emerging technology that offers a number of advantages over traditional methods of air pollution control. The purpose of this research is to modelise the biofiltration experimental results into the Langmuir adsorption model. This research is conducted in laboratory scale biofilter column, with parameters studied are effect of biofilter length and N2O gas flowrate. The result of the model is simulated into sensitivity analysis. The average Langmuir constant obtained in the model of the research is 16.006 liter/mol. Dinitrogen Monoksida (N2O) merupakan emisi dari proses industri dan kegiatan pertanian. Gas tersebut merupakan gas polutan berbahaya dan menyebabkan masalah lingkungan yang serius. Sebelumnya, teknologi kontrol tradisional seperti Selective Catalytic Reduction (SCR) dan Selective Non-Catalytic Reduction (SNCR) digunakan untuk mengontrol emisi N2O pada kegiatan-kegiatan industri. Akan tetapi, kedua proses ini membutuhkan suhu yang tinggi dan penggunaan katalis. Adanya masalah dari segi ekonomi dan teknis memotivasi peneliti untuk mengembangkan teknologi baru yang lebih murah dan efisien untuk menghilangkan N2O dari gas buangan. Pengolahan N2O secara biologis dalam proses biofiltrasi adalah salah satu alternatif ramah lingkungan yang dapat digunakan dalam pengelolaan emisi industri. Penelitian ini bertujuan untuk menggambarkan hasil biofiltrasi gas N2O dengan medium pupuk kompos dalam bentuk model adsorpsi Langmuir. Penelitian dilakukan dalam kolom biofilter skala laboratorium, dan parameter-parameter yang diteliti adalah pengaruh dari ketinggian biofilter dan laju alir gas N2O. Hasil dari pemodelan kemudian disimulasikan dalam analisis sensitivitas. Nilai konstanta Langmuir rata-rata yang didapatkan dari pemodelan penelitian ini adalah 16,006 liter/mol.
The effects of biofilm and selective mixed culture on the electricity outputs and wastewater quality of tempe liquid waste based microbial fuel cell Tania Surya Utami; Rita Arbianti; M Mariana; Nathania Dwi Karina; Vifki Leondo
Reaktor Volume 18 No. 2 June 2018
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (766.553 KB) | DOI: 10.14710/reaktor.18.2.84-91

Abstract

Microbial Fuel Cell (MFC) technology is highly prospective to be developed because it could be utilized as the alternative electricity sources and simultaneously as the wastewater treatment unit using microorganism as catalyst. Industrial Tempe wastewater has the potential to be used as MFC substrate since it still contains high nutrition for microbe and could pollute the environment if it disposed before being processed first. This study focused on investigating the effect of selective mixed culture addition and biofilm formation on the electricity production and the wastewater treatment aspects with tubular single chamber membranless reactor and industrial Tempe wastewater substrate. The result showed that, with the addition of selective mixed culture, the optimum electricity production obtained with addition of 1 ml gram-negative bacteria with increase in electricity production up to 92.14% and average voltage of 17.91 mV, while the optimum decreased levels of COD and BOD obtained with addition of 5 ml gram-negative bacteria which are 29.32% and 51.32%. On the biofilm formation experiment, optimum electricity production obtained from biofilm formation time for 14 days with increase in electricity production up to 10-folds and average voltage of 30.52 mV, while the optimum decreased levels of COD and BOD obtained from biofilm formation time for 7 days which are 18.2% and 35.9%.Keywords : biofilm, Microbial Fuel Cell, selective mixed culture, Tempe wastewater, tubular reactor
Effect of Electrolytes and Microbial Culture toward Electricity Generation Utilizing Tempe Wastewater in Microbial Fuel Cell Tania Surya Utami
Sriwijaya International Seminar on Energy-Environmental Science and Technology Vol 1, No 1 (2014)
Publisher : Sriwijaya International Seminar on Energy-Environmental Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Demand for electricity has become a crucial requirement of Indonesian society. Resources, which generate electrical energy such as fossil fuel, is predicted to run out within the next dozen years. Microbial Fuel Cell is a development of the latest technology that uses microbes to break down a substrate. This activity will cause potential difference and generate electricity. Microbes which generate electricity could be derived from pure culture and mixed culture. In this study, mixed culture of tempe wastewater microbes is used by adding electrolytes variation which are ammonium chloride-potassium chloride, potassium permanganate, and potassium persulfate in a single chamber reactor. The optimum voltage and power density are 62,09 mV and 3,01 mW/m2 when using potassium persulfate. Result of this research are compared to others research which using pure culture of L.bulgaricus by adding electrolytes variation which are potassium ferrycianide and potassium permanganate. In additional, utilization of potassium permanganat in mixed culture of tempe wastewater microbes and pure culture of L.bulgaricus are also compared to each other. The optimum voltage and power density of those comparison are 457 mV and 167,7 mW/m2 when using potassium permanganat in pure culture of L.bulgaricus.
EVALUASI PRODUKSI LISTRIK SUMBER ENERGI TERBARUKAN SEL ELEKTROKIMIA BERBASIS MIKROBA PADA VOLUME REAKTOR YANG BERBEDA Tania Surya Utami; Rita Arbianti; Guruh Mehra Mulyana
Prosiding Semnastek PROSIDING SEMNASTEK 2017
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Microbial Fuel Cell (MFC) merupakan salah satu teknologi yang dikembangkan untuk mendapatkan sumber energi terbarukan. MFC berupa sel elektrokimia yang menghasilkan listrik akibat aktivitas mikroba yang mendegradasi senyawa organik. Untuk menentukan apakah MFC dapat diaplikasikan menjadi teknologi praktis, dilakukan evaluasi melalui parameter kinetika berbasis Monod dan efisiensi coulomb serta efisiensi energi. Penelitian ini menggunakan reaktor tubular single chamber membranless dengan volume 0,5 L dan 5 L. Fokus penelitian ini adalah untuk mengevaluasi pengaruh peningkatan volume reaktor terhadap parameter kinetika dan efisiensi sistem. Data hasil percobaan di laboratorium berhasil dimodelkan dengan persamaan Monod. Nilai parameter kinetika untuk sistem MFC dengan volume 0,5 L adalah Pmax 0,032 mW/m2 dan Ks 772,98 mg/L, sedangkan untuk reaktor 5 L nilai Pmax sebesar 1,59 mW/m2 dan Ks 399,97 mg/L. Nilai efisiensi coulomb tertinggi untuk reaktor 0,5 L adalah sebesar 0,435% dan 2,84% untuk reaktor 5 L. Nilai efisiensi energi tertinggi pada sistem MFC adalah 0,015% dengan reaktor 5 L. Hasil penelitian menunjukkan peningkatan nilai parameter kinetika dan nilai efisiensi pada peningkatan volume reaktor dari 0,5 L ke 5 L. Peningkatan yang terjadi cukup signifikan, pada parameter Pmax terjadi peningkatan hingga 50 kali lipat.
BIOFILTRASI N2O DENGAN MEDIUM FILTER BERBASIS KOMPOS: EVALUASI PARAMETER OPERASI Tania Surya Utami
Purifikasi Vol 11 No 1 (2010): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v11.i1.186

Abstract

Nitrous oxide (N2O) is a pollutant that has to be reduced because it contributes global warming effect of 310 times higher than CO2. On other hand, agricultural sector contributes over 50% of N2O emissions. The objectives of this research were to study the influence of operating parameters such as flow rate, water content, the addition of natural and synthetic nutrients, and Nitrobacter sp. in biofilter, which used compost medium, to the removal efficiency of N2O. The results showed the best N2O reduction efficiency was 76.9%. This result was obtained at the biofilter with compost medium, which is enriched with synthetic nutrients and inoculated with Nitrobacter sp. This biofilter had a medium height of 50 cm, N2O flowrate of 72 mL/min, and water content of 60%.
The Effect of Ca Content on CaO-Zeolite on Nitrogen Adsorption Capacity Nasikin, Mohammad; Utami, Tania Surya; Siahaan, Agustina TP
Makara Journal of Technology Vol. 6, No. 2
Publisher : UI Scholars Hub

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Abstract

In industry, Ca zeolite is used as nitrogen selective adsorbent with the use of PSA (Pressure Swing Adsorption)/VSA (Vacuum Swing Adsorption) methods. Natural zeolite modified to be Cao-zeolite by ion exchange process using Ca(OH)2. Adsorption test was done on CaO-zeolite with different Ca concentration to understand how it’s adsorption phenomena on oxygen and nitrogen. Adsorption test has been done for CaO-zeolite with Ca concentration = 0,682%, 0,849% and 1,244% to oxygen and nitrogen with equal concentration seperately. Pressure variation has being done three times (5 minutes long each time) adsorption time to analyze the connection between adsorption time and how many moles of nitrogen and oxygen being adsorbed. Adsorption test showed that there is a limit of Ca concentration to make CaO-zeolite more selective to adsorb nitrogen. CaO-zeolite with Ca concentration . 1,125% adsorb nitrogen more selective than oxygen. Because the nitrogen content in air is four times the oxygen so we can conclude that the air adsorption rate by zeolite will be four times the adsorption rate by oxygen. This differences in adsorption rate will make the use for CaO-zeolite as a oxygen enrichment equipment possible.
Co-Authors Adinda Putri Wisman, Adinda Agustina Siahaan Agustina Siahaan, Agustina Anandho Wijanarko Angelina Annisa Kurnia, Annisa Anondho Wijanarko Anondho Wijanarko Astri Nugroho Astri Nugroho Beta Nadia Manaf, Beta Deni Novitasari, Deni Dianursanti Diki Firdaus, Diki Eki Listya Rini Ester Kristin, Ester Fadilah Putri, Najah Fajar Achmadi Prianto Guruh Mehra Mulyana Hanung Adi Nugroho Heri Hermansyah Ira Setiawati Ira Trisnawati, Ira Josia Simanjuntak Kitakawa, Naomi Shibasaki M Mariana Maemonah, Maemonah Misri Gozan Mohamad Nasikin Mohammad Nasikin Mohammad Nasikin Momoji Kubo Momoji Kubo, Momoji Naomi Shibasaki-Kitakawa Naomi Shibasaki-Kitakawa, Naomi Nathania Dwi Karina Naufal Azrizal Prasetyo Praswasti P. D.K Wulan Praswasti P. D.K Wulan, Praswasti P. D.K Prianto, Fajar Achmadi Purwati Latifah, Linatri Rita Arbianti Roekmijati W. Soemantojo Roekmijati W. Soemantojo, Roekmijati W. Septian Marno Siahaan, Agustina TP Sitorus, Randi Slamet Sri Amini Suryapranata, Bryan Toshiy Yonemoto Toshiy Yonemoto, Toshiy Vifki Leondo Wijanarko, A. Yuliusman Yuliusman Yuswan Muharam