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All Journal Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Indonesian Journal of Chemistry Jurnal Purifikasi Indonesian Journal of Biotechnology and Biodiversity Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia ASEAN Journal of Chemical Engineering Jurnal Teknik Kimia Indonesia Makara Journal of Technology Prosiding Seminar Nasional Rekayasa dan Teknologi (TAU SNAR- TEK) JURNAL REKAYASA KIMIA & LINGKUNGAN
Eva Fathul Karamah
Departemen Teknik Kimia, Fakultas Teknik, Universitas Indonesia
Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Other

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BIOADSORPSI SPESI SULFUR DALAM ION TIOSULFAT OLEH THIOBACILLUS THIOPARUS DENGAN BANTUAN ZEOLIT ALAM LAMPUNG SEBAGAI MEDIUM ADSORPSI Hidayanto, Ariyo Prabowo; Dianursanti, Dianursanti; Karamah, Eva F; Wulan, Praswasti PDK
Indonesian Journal of Biotechnology and Biodiversity Vol 1, No 1 (2017): Indonesian Journal of Biotechnology and Biodiversity
Publisher : Indonesian Journal of Biotechnology and Biodiversity

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Abstract

AbstrakSelain dapat menurunkan keekonomisan gas bumi, gas buang yang mengandung senyawa sulfur juga memiliki potensi yang dapat menimbulkan pencemaran udara jika terlepas ke udara. Untuk mengurangi kadar senyawa ini, proses bioadsorpsi dapat digunakan dengan menggabungkan proses degradasi oleh aktivitas mikroba dalam hal ini melalui aktivitas bakteri Thiobacillus thioparus dengan proses adsorpsi melalui bantuan material berpori yaitu zeolit alam Lampung sebagai adsorben. Pada tahap pembuatan medium dan fase tumbuh kultur Thiobacillus thioparus, koloni sel dijaga pada fase log yang akan terbentuk mulai hari ke 4 dan berhenti pada hari ke 8 dengan pH optimum harus stabil pada rentang 6 – 8. Pada fase inilah kultur digunakan pada proses bioadsorpsi. Zeolit sebagai bahan pengisi kolom bioadsorpsi juga sebelumnya di preparasi dengan proses mekanik untuk menyeragamkan ukuran diameter partikel yaitu sebesar ± 1 – 2 mm. BET autosorb digunakan untuk mengetahui profil fisik dari zeolit yaitu luas permukaan, volume pori, dan diameter pori. Pada proses bioadsorpsi, persentase reduksi tertinggi spesi sulfur pada ion tiosulfat dicapai sebesar 41,31 % pada jam ke 8. Sedangkan, proses bioadsorpsi akan terus berlanjut sampai mencapai jam ke 24 hingga tak tersedianya lagi sulfur yang dapat didegradasi oleh Thiobacillus thioparus, maka sel memasuki fase kematian hingga mengakhiri proses yang terjadi.Kata kunci : Thiobacillus thioparus, zeolit alam lampung, bioadsorpsi
BIOADSORPSI SPESI SULFUR DALAM ION TIOSULFAT OLEH THIOBACILLUS THIOPARUS DENGAN BANTUAN ZEOLIT ALAM LAMPUNG SEBAGAI MEDIUM ADSORPSI Hidayanto, Ariyo Prabowo; Dianursanti, Dianursanti; Karamah, Eva F; Wulan, Praswasti PDK
Indonesian Journal of Biotechnology and Biodiversity Vol 1, No 1 (2017): Indonesian Journal of Biotechnology and Biodiversity
Publisher : Universitas Esa Unggul

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Abstract

AbstrakSelain dapat menurunkan keekonomisan gas bumi, gas buang yang mengandung senyawa sulfur juga memiliki potensi yang dapat menimbulkan pencemaran udara jika terlepas ke udara. Untuk mengurangi kadar senyawa ini, proses bioadsorpsi dapat digunakan dengan menggabungkan proses degradasi oleh aktivitas mikroba dalam hal ini melalui aktivitas bakteri Thiobacillus thioparus dengan proses adsorpsi melalui bantuan material berpori yaitu zeolit alam Lampung sebagai adsorben. Pada tahap pembuatan medium dan fase tumbuh kultur Thiobacillus thioparus, koloni sel dijaga pada fase log yang akan terbentuk mulai hari ke 4 dan berhenti pada hari ke 8 dengan pH optimum harus stabil pada rentang 6 – 8. Pada fase inilah kultur digunakan pada proses bioadsorpsi. Zeolit sebagai bahan pengisi kolom bioadsorpsi juga sebelumnya di preparasi dengan proses mekanik untuk menyeragamkan ukuran diameter partikel yaitu sebesar ± 1 – 2 mm. BET autosorb digunakan untuk mengetahui profil fisik dari zeolit yaitu luas permukaan, volume pori, dan diameter pori. Pada proses bioadsorpsi, persentase reduksi tertinggi spesi sulfur pada ion tiosulfat dicapai sebesar 41,31 % pada jam ke 8. Sedangkan, proses bioadsorpsi akan terus berlanjut sampai mencapai jam ke 24 hingga tak tersedianya lagi sulfur yang dapat didegradasi oleh Thiobacillus thioparus, maka sel memasuki fase kematian hingga mengakhiri proses yang terjadi.Kata kunci : Thiobacillus thioparus, zeolit alam lampung, bioadsorpsi
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
DISINFEKSI BAKTERI ESCHERICHIA COLI MENGGUNAKAN PROSES KAVITASI HIDRODINAMIKA WATER-JET DENGAN KOMBINASI KARBON AKTIF DAN ZEOLIT Dina Isholawati; Eva Fathul Karamah; Zaenal Abidin Zufri; Alif Nuzulul Hidayat
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2014): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 5 2014
Publisher : Prosiding SNST Fakultas Teknik

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Abstract

Karbon aktif dan zeolit sangat banyak kegunaanya terutama dalam hal adsorbsi. Selain kemampuan mengadsorb bahan organik, adsorben ini juga dapat berfungsi sebagai desinfektan. Metode disinfeksi bakteri Escherichia Coli alternative yang potensial salah satunya dengan kavitasi. Kavitasi merupakan fenomena terjadinya pembentukan, pertumbuhan dan hancurnya gelembung mikro dalam cairan. Untuk mengoptimalkan penelitian ini digunakan adsorben karbon aktif dan zeolit dengan variasi  dosis  adsorben. Laju alir disinfeksi9 liter/menitmenunjukkan hasil yang terbaik untuk disinfeksi bakteri Escherichia Coli. Dosis adsorben terbaik yaitu pada dosis 2 gram/liter baik menggunakan karbon aktif maupun zeolit aktif. Penggunaan adsorben tidak membutuhkan biaya yang mahal dan ramah lingkungan sehingga dapat diaplikasikan dalam kehidupan sehari-hari.Hasil penelitian ini menunjukkan laju disinfeksi menggunakan karbon aktif hasilnya lebih bagus dari pada zeolit aktif.Adsorben dianalisis menggunakan karakterisasi Brunauer-Emmett-Teller (BET) Autosorb sebelum dan setelah disinfeksi, hasil presentase mengecilnya luas permukaan karbon aktif dan zeolit aktif adalah 28 % dan 18%. Kata kunci:Disinfeksi, Escherichia Coli, karbon aktif, kavitasi, zeolit aktif.
INTENSIFIKASI PROSES OZONASI FENOL MENGGUNAKAN KAVITASI HIDRODINAMIKA DAN KAVITASI ULTRASONIK Eva Fathul Karamah
Purifikasi Vol 11 No 2 (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.i2.193

Abstract

Phenolic compounds are one of the main and hazardous contaminants in the waste water due to its toxicity, even at low concentration. Several wastewater treatment processes have been tested for reducing phenol concentration. One of the treatment processes is ozonation. However, this process has several problems, namely the small solubility of ozone in water and the low reactivity between ozone and phenol. This problem can be solved by cavitation, a phenomenon of formation, growth, and collapse of microbubbles within a liquid. This research studied the performance of ozonation and cavitation (hydrodynamic and/or ultrasound) for phenol degradation. The combined ozonation/hydrodynamic cavitation/ultrasound cavitation process showed the highest efficiency in phenol degradation, and the lowest residual and off gas ozone concentrations. The phenol removal efficiencies in ozonation/hydrodynamic cavitation/sonication, ozonation/sonication, ozonation/hydrodynamic cavitation and ozonation processes were 56.27%, 46.46%, 26.28%, and 18.63% respectively.
Combination of Ozonation and Adsorption Using Granular Activated Carbon (GAC) for Tofu Industry Wastewater Treatment Eva Fathul Karamah; Ika Putri Adripratiwi; Linggar Anindita
Indonesian Journal of Chemistry Vol 18, No 4 (2018)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (299.578 KB) | DOI: 10.22146/ijc.26724

Abstract

Tofu industry wastewater is one of the environmental pollutants that need more effective treatment. Ozonation and adsorption method is known to have the capability to oxidize organic compound in wastewater. Adsorption is done by using granular activated carbon (GAC) as an adsorbent to increase tofu wastewater degradation process by adsorbing organic materials and increasing production of hydroxyl radical as the main oxidizing agent. This research is carried out to evaluate the performance of ozonation, adsorption, and combination of both in processing tofu wastewater. To evaluate the significance of ozone dosage and amount of GAC used, these variations are varied which are 60, 111, and 155 mg/h of ozone dosage and 50, 75, and 100 g of the amount of GAC used. Parameters of the process are organic substances of tofu wastewater such as COD, TSS, and pH. The measurements are being done using a spectrophotometer, colorimeter, and pH meter. The outcome of this research is to provide an alternative method in the liquid waste treatment of the tofu industry and the processed wastewater to meet the environmental quality standards. The more ozone and the more quantity of GAC used, the higher the quantity of hydroxyl radicals formed. Addition of GAC in the ozonation process results in more than 100% increase in hydroxyl radical production. Combination of ozonation and adsorption is able to remove 377.12 mg/L of COD and 26 mg/L of TSS.
Degradation of Blue KN-R Dye in Batik Effluent by an Advanced Oxidation Process Using a Combination of Ozonation and Hydrodynamic Cavitation Eva Fathul Karamah; Pristi Amalia Nurcahyani
Indonesian Journal of Chemistry Vol 19, No 1 (2019)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (250.392 KB) | DOI: 10.22146/ijc.26733

Abstract

The popularity of batik has been increasing since it was declared as a world cultural heritage by UNESCO in 2009. Correspondingly, the content of textile dyes in textile industry wastewater is also increased. These dyes contain functional groups which make them quite stable in the environment and causes pollution. In this work, degradation of 100 ppm Blue KN-R has been investigated using ozonation, hydrodynamic cavitation, and a combination of the two for 60 min. The three configuration methods were optimized in terms of different operating parameters, namely flowrate, initial pH and dosage of ozone, to obtain the maximum degradation of Blue KN-R. It was found that the highest decolorization level for a single method was 70.16% for the single ozonation process at pH 11 and 156.48 mg/h of ozone and 1.79% for the single hydrodynamic cavitation process at pH 4. The highest decolorization level was 79.39%, achieved by the combination at pH 11 and 156.48 mg/h of ozone. The mineralization level in the form of a percentage of Total Organic Carbon (TOC) removal by ozonation, hydrodynamic cavitation, and their combination was 14.81, 1.85, and 19.9%, respectively. Due to its better performance, degradation of Blue KN-R was conducted by the hybrid method for 120 min, resulting in 92.63% of decolorization and 24.54% of TOC removal. The degree of synergetic decolorization and mineralization was due to the mechanical and chemical effect of hydrodynamic cavitation in increasing ozone solubility and production of hydroxyl radicals. Degradation of batik effluent has been investigated in optimum conditions for 120 min. The color, COD, BOD, and TSS removal were 67.96, 68.72, 66.54, and 79.84%, respectively.
The Effect of Ozone and Zeolite Concentration to the Performance of the Treatment of Wastewater Containing Heavy Metal Using Flotation Process Karamah, Eva Fathul; Bismo, Setijo; Simbolon, Hotdi M.
Makara Journal of Technology Vol. 12, No. 1
Publisher : UI Scholars Hub

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Abstract

The Effect of Ozone and Zeolite Concentration to the Performance of the Treatment of Wastewater Containing Heavy Metal Using Flotation Process. Industrial wastewater which contains heavy metal cannot be disposed to the environment directly, due to its toxicity. In this research, separation of metal from wastewater was conducted by sorptive flotation method, using Lampung natural zeolite as bonding agent. The most common diffuser used in the flotation process is air or oxygen. In this research, ozone is used as diffuser because it is a stronger oxidant and more dissolvable in water than oxygen. Besides, ozone is a coagulant aid and disinfectant. With ozone as diffuser, it is expected that the process become faster with higher efficiency. This research was conducted to determine ozone effectiveness as diffuser, compared with other diffuser, and also to determine optimum concentration and effectiveness of zeolite in flotation of iron, nickel and copper. The research result shows that separation of iron with air diffuser is 90.8%, air-oxygen diffuser is 95.7%, air-ozone (from air) diffuser is 99.7%, and air-ozone (from oxygen) diffuser is 99.7%. Natural zeolite is effective as bonding agent with optimum concentration equal to 2 gram/liter, producing separation percentage for iron equal to 99.70%, copper equal to 88.98% and Nickel equal to 98.46%.
The Effect of Power on Nitrate Synthesis and The Emission Intensities of Reactive Species Using Anodic Plasma Electrolysis Harianingsih Harianingsih; Nelson Saksono; Eva Fathul Karamah; Zainal Zakaria
ASEAN Journal of Chemical Engineering Vol 22, No 2 (2022)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.76790

Abstract

Nitrates are used as fertilizer to fulfill nutrients for plants. Anodic plasma electrolysis technology can be an effective and environmentally friendly solution in nitrogen fixation into nitrate compounds. This research aimed to determine the effect of controlling voltage and power in nitrate synthesis using plasma electrolysis with air as the raw material injected at the anode. The material used is an electrolyte solution of 0.02 M K2SO4, the electrodes used are in the form of tungsten and stainless steel, and a nitrate reagent is used for the nitrate test. The results of the study showed that at 400 W, the optimal rate was 0.8 L men-1 with 1889 mg L-1 of nitrate formed. While at 500 W and 600 W, the optimal rate of 1 L men-1 with nitrate formed was 2213 mg L-1 and 2453 mg L-1. The emission intensities of reactive species N, N2*, N2+,•OH, •H, and •O at an optimal rate of 0.8 L men-1 400 W 700 V in 20139 au, 28540 au, 18023 au, 30863 au, 12547 au, 49800 au. The addition of air injection will increase the oxygen input into the plasma zone, which can produce reactive species •O and nitrogen produces reactive species N, N2*, N2+ forms NO. The formed NO compounds can be oxidized to NO2, and the reaction between NO2 and reactive species •OH forms nitrates. 
Optimasi Pemanfaatan Existing Hot Oil System dari Train Sebelumnya Untuk Menujang Proses Pemanasan Medium Pada Train Baru di Kilang Pengolahan Gas X Dona Novita Umar; Eva Fathul Karamah
Prosiding TAU SNARS-TEK Seminar Nasional Rekayasa dan Teknologi Vol. 1 No. 1 (2019): Prosiding TAU SNAR-TEK Seminar Nasional Rekayasa dan Teknologi 2019
Publisher : Fakultas Teknik dan Teknologi - TANRI ABENG UNIVERSITY

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Abstract

The main processes at the gas processing plant are separation between gas, condensate and water, separation of acid gas (CO2 and H2S), drying of gas and decreasing of Dew point gas. To support the main process, gas processing plants also need utilities such as electricity, heating, gas fuel processing, nitrogen production, water treatment and air treatment. What is discussed in this research is the heating facility for Reboiler. This heating facility is called a hot oil system. The gas processing plant X currently has 2 trains with a design capacity of 310 MMSCFD gas capacity and a condensate capacity design of 13,500 BPD while actual feed gas is higher 352 MMSCFD. The design of the separation of CO2 acid gas is 5% mol and H2S 1000 ppm while the actual concentration of acid in the feed gas is lower, CO2 2% mol and H2S 700 ppm and. Furthermore, in the near future field X will be developed with the addition of gas production of 95 MMSCFD which is planned to be facilitated by the construction of a new train (Train 3). Normally a gas processing train will be equipped with all its supporting facilities, but this research will examine how to optimize the addition of Train 3 by optimizing the utilization of the heating system by existing hot oil system from trains 1 and 2, due to the heat duty capacity of the existing hot oil system is estimated to be excessive and can still facilitate the heating needs of Train 3. The goal will be to save investment costs if this optimization is successfully implemented.
Co-Authors Alif Nuzulul Hidayat Dian R. Suminar Dianursanti Dina Isholawati Dona Novita Umar Erwin Pujiyatmoko Ferry Ikhsandy Harianingsih, Harianingsih Hidayanto, Ariyo Prabowo Ika Putri Adripratiwi Indika Sunarko Linggar Anindita Nelson Saksono Nelson Saksono Praswasti PDK Wulan, Praswasti PDK Pristi Amalia Nurcahyani Setijo Bismo Simbolon, Hotdi M. Tiara Aninditha Tri S. Budikania Wulan, Praswasti PDK Zaenal Abidin Zufri Zainal Zakaria