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Nelson Saksono
Department Of Chemical Engineering, Universitas Indonesia, Depok 16424, Indonesia
Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Social Sciences Other

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Aplikasi teknologi elektrolisis plasma pada proses produksi Klor-Alkali Nelson Saksono; Fakhrian Abqari; Setijo Bismo
Jurnal Teknik Kimia Indonesia Vol 11, No 3 (2012)
Publisher : ASOSIASI PENDIDIKAN TINGGI TEKNIK KIMIA INDONESIA (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jtki.2012.11.3.3

Abstract

Plasma electrolysis technology applications in Chlor-Alkali process productionChlor-alkali industry sector is one of the important industrial sectorsin chemical industry. However, the chlor-alkali industry is one of the industry sectors that consume the most electrical energy due to the production using the methodof electrolysis. Plasma electrolysis is an electrolysis process with high voltage so that produce the glow discharge plasma in electrolyte solution. This method can be applied in the production of chlor-alkali and can reduce energy consumption several times. This research is aimed to observe the plasma electrolysis method in producing chlorine gas and also to measure the electricity consumption needed in chlor-alkali production process. This study was conducted by using plasma electrolysis reactor equipped by electrodes and cooling system. Process variables observed are voltage, NaCl concntration, and anode depth. Result of this research shows that the increase of all variables will cause the increase of chlorine gas production. The highest chlorine gas production is 1.44 mmol for 15 minutes at 400 V and 0.15 M NaCl solution where the anode position is at the surface of solution. Energy consumption of the process reaches 284 kJ/mmol Cl2, which is 38 times lower than electrolysis process in the same reactor configuration.Keywords: electrolysis, plasma electrolysis, production of chlor-alkali AbstrakIndustri klor-alkali merupakan salah satu industri penting dalam industri kimia dengan konsumsi energi listrik yang tinggi karena proses produksinya menggunakan metode elektrolisis. Elektrolisis plasma merupakan proses elektrolisis dengan tegangan yang jauh lebih tinggi sehingga terbentuk lecutan api listrik pada larutan elektrolit. Metode ini dapat diterapkan dalam aplikasi produksi klor-alkali dan mampu mengurangi konsumsi energi listrik hingga beberapa kali lipat. Penelitian ini bertujuan untuk menguji metode elektrolisis plasma dalam menghasilkan gas klor serta mengukur konsumsi energi listrik yang dibutuhkan dalam proses produksi klor-alkali. Penelitian dilakukan menggunakan reaktor elektrolisis plasma yang telah dilengkapi elektroda dan sistem pendingin. Variabel proses yang diamati meliputi tegangan, konsentrasi NaCl, dan kedalaman anoda. Hasil percobaan menunjukkan kenaikan produksi gas klor dengan meningkatnya tegangan, konsentrasi NaCl dan kedalaman anoda. Produksi gas klor tertinggi adalah sebesar 1,44 mmol yang diperoleh selama 15 menit proses pada tegangan 400 V dan konsentrasi NaCl 0,15 M dimana posisi anoda pada permukaan larutan. Konsumsi energi listrik mencapai 284 kJ/mmol Cl2 yang berarti 38 kali lebih rendah dibanding proses elektrolisis dalam konfigurasi reaktor yang sama.Kata kunci: elektrolisis, elektrolisis plasma, produksi klor-alkali
Efek Suhu dan Injeksi Udara pada Penyisihan Limbah Pewarna Tekstil Remazol Red dengan Metode Elektrolisis Plasma Tri S. Budikania; Dian R. Suminar; Eva F. Karamah; Nelson Saksono
Jurnal Teknik Kimia Indonesia Vol 18, No 1 (2019)
Publisher : ASOSIASI PENDIDIKAN TINGGI TEKNIK KIMIA INDONESIA (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jtki.2019.18.1.5

Abstract

Abstrak. Limbah pewarna industri tekstil merupakan limbah cair yang sulit teroksidasi dan berbahaya bagi lingkungan. Radikal hidroksil (•OH) merupakan spesies yang sangat efektif dalam mengoksidasi berbagai limbah cair organik seperti limbah pewarna.  Metode Elektrolisis Plasma sangat produktif menghasilkan radikal Hidroksil sehingga efektif dalam menyisihkan (mendegradasi) berbagai jenis limbah pewarna tekstil seperti Remazol Red. Penelitian ini bertujuan mengoptimalkan proses degradasi remazol red RB 133 dan konsumsi energinya menggunakan metode Elektrolisis Plasma melalui pengaturan suhu dan  injeksi gelembung  udara dalam larutan. Pembentukan H2O2 merupakan indikator pembentukan •OH pada reaksi Elektrolisis Plasma. Injeksi udara pada larutan limbah pewarna menurunkan arus listrik pada kurva karekateristik arus-tegangan. Kenaikan suhu larutan dari 45 oC menjadi 75 oC  selama 10 menit reaksi tampa injeksi udara menurunkan konsumsi energi  dari 229,9 kJ menjadi 219,5 kJ serta menurunkan  produksi H2O2 dari 4,8 mmol menjadi 3,1 mmol. Sementara injeksi udara pada suhu 75 oC selama 10 menit proses menurunkan konsumsi  listrik hingga 28,5% dan meningkatkan produksi H2O2 hingga 27,3 %. Namun demikian injeksi udara hanya meningkatkan degradasi Remazol Red sebesar 1,8 %.  Suhu optimum dicapai pada 55oC, dengan produksi H2O2 sebesar 5,7 mmol selama 30 menit. Injeksi udara udara mampu meningkatkan efektivitas proses. Hasil penelitian menunjukkan persen penyisihan mencapai 88,9% dengan  konsumsi energi sebesar 115,2 kJ dalam waktu 30 menit reaksi. Kata kunci: elektrolisis plasma, remazol red, gelembung udara. Abstract. Effect of Temperature and Air Injection on Degradation of Remazol Red Textile Dyes by Plasma Electrolysis Method. The textile dye waste is a liquid waste that is difficult to oxidize and dangerous for the environment. Hydroxyl radicals (• OH) are very effective species in oxidizing various organic liquid wastes such as Remazol Red. Plasma Electrolysis Method is very productive in producing Hydroxyl radicals, resulting in effective degradation of various types of textile dye waste such as Remazol Red. This study aims to optimize the degradation process of remazol red RB 133 and its energy consumption using the Plasma Electrolysis method through temperature regulation and injection of air bubbles in solution. The formation of H2O2 is used an indicator of the formation of •OH in the Plasma Electrolysis reaction. The Air injection decreases the electric current on the current-voltage characteristic curve. The solution temperature increases from 45oC to 75oC for 10 minutes reaction without air injection were able to reduce the energy consumption from 229.9 kJ to 219.5 kJ and H2O2 production from 4.8 mmol to 3.1 mmol. Meanwhile, the addition of air injection at 75oC within 10 minutes of reaction were able to reduce electricity consumption by 28.5% and increases H2O2 production by 27.3%. However, the addition of air injection only increased the degradation of Remazol Red by 1.8%. The optimum temperature was reached at 55oC, with H2O2 production of 5.7 mmol for 30 minutes. The addition of air injection has been shown to increase the effectiveness of the process. The results showed degradation percentage reached 88.9% with energy consumption of 115.2 kJ within 30 minutes of reaction. Keywords: air injection, plasma electrolysis, remazol red. Graphical Abstract
EFEK MEDAN MAGNET PADA PENURUNAN KESADAHAN DAN PENCEGAHAN PEMBENTUKAN KERAK CaCO3 Nelson Saksono; Elisabeth A. S.; Setijo Bismo; Roekmijati W.; Azwar Manaf
Jurnal Sains Materi Indonesia EDISI KHUSUS: OKTOBER 2007
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (108.795 KB) | DOI: 10.17146/jusami.2007.0.0.5142

Abstract

EFEK MEDAN MAGNET PADA PENURUNAN KESADAHAN DAN PENCEGAHAN PEMBENTUKAN KERAK CaCO3.Metode MWT (Magnetic Water Treatment) merupakan alternatif potensial yang dapat digunakan untuk mengurangi terbentuknya deposit kerak CaCO3, namun hingga saat ini aplikasi metode ini masih mengundang kontroversi karena pengaruhnya yang belum jelas. Di sisi lain, masih terdapat pro dan kontra di kalangan para penelitimengenai pengaruh dan efektivitas proses magnetisasi itu sendiri. Oleh karena itu, dibutuhkan penelitian lebih lanjut dan komprehensif yang dapat menjelaskan efektivitas metode ini secara lebih ilmiah. Penelitian ini dilakukan untukmenguji pengaruhmedan magnet terhadap presipitasi CaCO3 saat magnetisasi dan tendensi presipitasi setelah magnetisasi filtrasi dari sampel air sadah yang disirkulasi melewati medan magnet.Medan magnet dihasilkan dari beberapa pasang magnet permanen berbasis Nd-Fe-B dengan kuat medan 5200 Gauss. Jumlah CaCO3 yang terbentuk diukur dengan metode titrasi kompleksometri EDTA (Ethylene Diamine Tetra-acetic Acid). Variabel kondisi operasi meliputi laju alir dan waktu sirkulasi. Magnetisasi menyebabkan kenaikkan presipitasi relatif sebesar 13,1 % saat magnetisasi dan penurunan presipitasi relatif sebesar 60,5 % sesudah magnetisasi filtrasi untuk laju alir 1,33 L/min dan waktu sirkulasi 30 menit. Penelitian ini menunjukkan bahwa magnetisasi air sadah dapat meningkatkan presipitasi CaCO3 saat magnetisasi dan mengurangi tendensi presipitasi CaCO3 setelah magnetisasi filtrasi.
The Analysis of Pollutant Parameters in Tofu Wastewater after being Treated by Contact Glow Discharge Electrolysis Widya Pangestika; Nelson Saksono
JURNAL INTEGRASI PROSES VOLUME 9 NOMOR 1 JUNI 2020
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/jip.v9i1.7492

Abstract

Background and Objective: There are many Small, Micro and Medium Enterprises engaged in tofu processing in Indonesia. Some of them still dumped their waste directly into the river, causing the river to become turbid, had bad odor, and many aquatic organisms in the water died. Tofu wastewater contained high pollutant parameters, such as: COD, BOD, TOC, and TSS therefore, we need an effective wastewater treatment that could reduce the level of these parameters to below the standards set by the government. Materials and Methods: We used Contact Glow Discharge Electrolysis (CGDE) to treat the wastewater. Besides these four parameters, we also measured pH solution at several CGDE process voltage variations and analyzed the content of compounds contained in the initial tofu wastewater and the waste that had been treated by using CGDE. Results: From this study, we knew that the higher the voltage we used, the more acidic the solution would become. In the same operating condition, the percentage of TOC degradation was lower than the percentage of COD degradation. Voltage of 750 V gave the lowest COD and TOC values, respectively 446.6 mg/L and 320 mg/L. In addition, the best voltage that could reduce BOD and TSS degradation by 37% and by 80.2% respectively, was 650 V. Conclusion: CGDE process was able to degrade complex compounds in tofu wastewater into compounds with simpler molecular structures, such as Tris (2,4-di-tert-butylphenyl) phosphate and eicosane.
Sintesis Pupuk Nitrat Cair dengan Teknologi Murah dan Ramah Lingkungan sebagai Solusi Ketahanan Pangan Global Muhammad Fadhillah Ansyari; Nelson Saksono; Miranda Talitha Zagita
Jurnal Teknologi Vol 9, No 1 (2021): Jurnal Teknologi
Publisher : Universitas Jayabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31479/jtek.v9i1.110

Abstract

Sektor pertanian global kini menemui tantangan. Pupuk nitrogen diproduksi dengan proses Haber-Bosch mengonsumsi 1-2% total produksi energi dunia dan menghasilkan polutan CO2 300 juta ton/tahun serta menyumbang 2,5% gas rumah kaca setiap tahunnya. Selain itu, pandemi COVID-19 menyebabkan disrupsi supply chain industri pupuk, mengakibatkan harga pupuk global meningkat. Teknologi elektrolisis plasma merupakan green technology murah dalam memproduksi pupuk nitrat cair dari udara, menggunakan spesies reaktif radikal OH. Penelitian bertujuan untuk memproduksi pupuk nitrat cair melalui elektrolisis plasma dengan pengaruh daya dan laju alir udara. Pengujian kinerja pupuk dilakukan pada tanaman cabai, tomat, dan sawi. Metode ini dilakukan pada reaktor batch menggunakan variasi laju alir udara 0,2; 0,4; 0,6; 0,8; 1 lpm, daya 500; 600; 700 watt, dan konsentrasi pupuk nitrat yang diujikan 100, 200, dan 300 ppm. Hasil menunjukkan semakin besar daya, dan laju alir udara meningkatkan produksi nitrat. Penelitian menghasilkan nitrat terbesar saat menggunakan larutan elektrolit 0.01 M K2SO4 dengan 0.01 M K2HPO4, daya 600 watt dan laju alir udara 0,8 lpm. Pemberian pupuk nitrat cair menunjukkan hasil lebih baik dibandingkan tanpa pupuk maupun dengan pupuk komersial. Tanaman cabai menunjukkan persentasi peningkatan tertinggi. Dosis optimum setiap tanamannya adalah cabai 100 ppm, tomat 200 ppm, dan sawi hijau 200 ppm.
Analisis dan Optimasi Pengaruh Suhu Gas Umpan Pada Kinerja Acid Gas Removal Unit Iwan Febrianto; Nelson Saksono
Proceedings Series on Physical & Formal Sciences Vol. 1 (2021): Proceedings of Smart Advancement on Engineering and Applied Science
Publisher : UM Purwokerto Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (608.721 KB) | DOI: 10.30595/pspfs.v1i.136

Abstract

The Gas Gathering Station (GGS) in field X processes gas from 16 (sixteen) wells before being sent as selling gas to consumers. The sixteen wells have decreased in good pressure since 2011, thus affecting the performance of the Acid Gas Removal Unit (AGRU). The GGS consists of 4 (four) main units, namely the Manifold Production/ Test, the Separation Unit, the Acid Gas Removal Unit (AGRU), the Dehydration Unit (DHU). The AGRU facility in field X is designed to reduce the acid gas content of CO2 by 21 mol% with a feed gas capacity of 85 MMSCFD. A decrease in reservoir pressure caused an increase in the feed gas temperature and an increase in the water content of the well. Based on the reconstruction of the design conditions into the simulation model, the amine composition consisting of MDEA 0.3618 and MEA 0.088 wt fraction to obtain the percentage of CO2 in the 5% mol sales gas. The increase in feed gas temperature up to 146 F caused foaming due to condensation of heavy hydrocarbon fraction, so it was necessary to modify it by adding a chiller to cool the feed gas to become 60 F. Based on the simulation, the flow rate of gas entering AGRU could reach 83.7 MMSCFD. There was an increase in gas production of 38.1 MMSCFD and condensate of 1,376 BPD. Economically, the addition of a chiller modification project was feasible with the economical parameters of NPV US$ 132,000,000, IRR 348.19%, POT 0.31 year and PV ratio 19.06.
Study Effect of Salt Washing Process on Content and Iodium Stability of Salt Saksono, Nelson
Makara Journal of Technology Vol. 6, No. 1
Publisher : UI Scholars Hub

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Abstract

Effect of Salt Washing Process on Content and Iodium Stability of Salt. Salt washing process should increase the salt quality. It should clean the salt from sludge or clay and also reduce the impurity compound such as Mg, Ca and the reductor content. The objective of these reseach is to assess the effect of washing process on the content og hygroscopic impurities compound (Ca and Mg), and reductor content of salt. The research also investigate the water absorbing, pH, KIO3 content as function of time to obtain effect of washing process on KIO3 stability in salt. The experiment result shows that the lowest content of Mg and reductor compound 0.016 % wt and 2.65 ppm respectively which is reached at the fi ne salt washing process using 27 % wt brine. The analysis of water content indicates an increase the Ca and Mg content, causing an water absorbtion in salt , However the effect on pH the is not clear.
Iodat Analysis Content in Cooking Ingredients Using Iodometry and X-ray Fluorescence Methods. Saksono, Nelson
Makara Journal of Technology Vol. 6, No. 3
Publisher : UI Scholars Hub

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Abstract

Iodat Analysis Content in Cooking Ingredients Using Iodometry and X-ray Fluorescence Methods. Salt iodization program using iodine fortification into salt method is the best method that is effective and economical to overcome the problems caused by iodine deficiency. However in, its development there are some issues clamed that the use of iodized salt is ineffective since iodine content reduces, even disappear when the salt mix with other cooking ingredients. In order to investigated the existence of iodine in cooking ingredients, a research applying iodometry and X-ray fluorescence methods was carry out. The result obtained by iodometry method showed decreases in iodine content in each ingredient, as chili was 75,5 %, ketumbar was 51,43 %, and pepper was 20.99 %. On the other hand, the X-ray Fluorescence measurement showed the iodat deficiency in chili was 12.84 %, ketumbar was 6.42 %, and pepper was 1.14 %. The difference in the result of iodat deficiency can be caused by difference in principle and possessed by them. Iodometry only can analyze iodine in iodat form, while in cooking ingredients iodat may exist in various compound. X-ray Fluorescence can analyze iodat in some compounds so that the complicated matrix ingredient with not interfere the measurement.
Dipole Magnetization Effect to Kerosene Characteristics Chalid, Mochamad; Saksono, Nelson; Adiwar, Adiwar; Darsono, Nono
Makara Journal of Technology Vol. 9, No. 1
Publisher : UI Scholars Hub

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Abstract

Dipole Magnetization Effect to Kerosene Characteristics. Investigation of kerosene characteristics has been done by ex-situ dipole magnetization. The results show that magnetization technique can be able to influence kerosene characteristics. Polarity and viscosity of the kerosene are observed by measuring refractive index and viscosity. An hour of 4330 Gauss flux magnetic will increase refractive index from 1.447 to 1.449 and decrease the viscosity from 1.278 to 1.256. Those changing support de-clustering occurrence and polarity increment of kerosene molecule. Gas chromatography and infrared result show that those changing do not alter kerosene structure and composition.
Magnetic Field Effects on CaCO3 Precipitation Process in Hard Water Saksono, Nelson; Bismo, Setijo; Krisanti, Elsa; Manaf, Azwar; Widaningrum, Roekmijati
Makara Journal of Technology Vol. 10, No. 2
Publisher : UI Scholars Hub

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Abstract

Magnetic Field Effects on CaCO3 Precipitation Process in Hard Water. Magnetic treatment is applied as physical water treatment for scale prevention especially CaCO3, from hard water in piping equipment by reducing its hardness. Na2CO3 and CaCl2 solution sample was used in to investigate the magnetic fields influence on the formation of particle of CaCO3. By changing the strength of magnetic fields, exposure time and concentration of samples solution, this study presents quantitative results of total scale deposit, total precipitated CaCO3 and morphology of the deposit. This research was run by comparing magnetically and non-magnetically treated samples. The results showed an increase of deposits formation rate and total number of precipitated CaCO3 of magnetically treated samples. The increase of concentration solution sample will also raised the deposit under magnetic field. Microscope images showed a greater number but smaller size of CaCO3 deposits form in magnetically treated samples, and aggregation during the processes. X-ray diffraction (XRD) analysis showed that magnetically samples were dominated by calcite. But, there was a significant decrease of calcite’s peak intensities from magnetized samples that indicated the decrease of the amount of calcite and an increase of total amorphous of deposits. This result showed that magnetization of hard water leaded to the decreasing of ion Ca2+ due to the increasing of total CaCO3 precipitation process.
Co-Authors Adiwar Adiwar Adiwar Adiwar, Adiwar Anak Agung Istri Sri Wiadnyani Azwar Manaf Bondan Ariawan, Bondan Chalid, Mochamad Dian R. Suminar Elisabeth A. S. Elsa Krisanti Eva Fathul Karamah Fakhrian Abqari Fakhrian Abqari Fakhrian Abqari, Fakhrian Harianingsih, Harianingsih Harianingsih, Harianingsih Imani, Nadya Alfa Cahaya Iwan Febrianto Maharani Kusumaningrum Miranda Talitha Zagita Muhammad Fadhillah Ansyari Nafiscatoha, Dicgorry Nono Darsono Nono Darsono, Nono Pangestika, Widya Rahma Muthia, Rahma Ratih Tien Seratri, Ratih Roekmijati Soemantojo Roekmijati Soemantojo, Roekmijati Roekmijati W. Roekmijati W. Soemantojo, Roekmijati W. Roekmijati Widaningroem Roekmijati Widaningroem, Roekmijati Roekmijati Widaningrum Roekmijati Widaningrum, Roekmijati Setijo Bismo Setyo Widodo Setyo Widodo Setyo Widodo Subiyanto Subiyanto Subiyanto Subiyanto Subiyanto Suminar, Dian Ratna TATI NURHAYATI Tri S. Budikania Wara Dyah Pita Rengga Yuliusman Yuliusman Yuliusman Yuliusman Zainal Zakaria Zakaria, Zainal