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All Journal VALENSI Reaktor Jurnal Ilmu Dasar Jurnal Sains dan Seni ITS Jurnal Sains Materi Indonesia IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science Sinergi Journal of Mathematical and Fundamental Sciences Indonesian Journal of Chemistry Akta Kimia Indonesia Chemistry Indonesian Journal of Chemical Research QARDHUL HASAN: MEDIA PENGABDIAN KEPADA MASYARAKAT Share : Journal of Service Learning Community Development Journal: Jurnal Pengabdian Masyarakat Makara Journal of Science Sewagati

Ratna Ediati

Department Of Chemistry, Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo Surabaya 60111

Author-ID : 257565

Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Biofuel Produced from Nyamplung Oil Using Catalytic Cracking Process with Zn-HZSM-5 Catalyst Agus Budianto; Danawati Hari Prajitno; Kusno Budhikarjono; Achmad Roesyadi; Ratna Ediati
IPTEK Journal of Proceedings Series Vol 1, No 1 (2014): International Seminar on Applied Technology, Science, and Arts (APTECS) 2013
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2014i1.257

Indonesia Presidential Regulation No. 5/2006 on National Energy Policy suggests that the government should speed up the implementation of the use of alternative energy or fuel substitution. Biofuel synthesis is one way to overcome the shortage of energy and reduce global warming due to the use of fossil fuel. Biofuel can be produced from a variety of vegetable oil. Beside palm oil, nyamplung oil can be used to produce biofuel. The technically main obstacle in producing biofuel is the availability of the catalyst. The availability catalyst are only imported and expensive. Researchers have tried to engineer a new type of catalyst that complete the weakness of zeolite based catalyst. The study was conducted through experimental approaches, testing and observations and conducted the correlation of experiment variables with the quality of the resulted catalyst. The experiment was done by synthesizing catalyst and testing it to produce biofuel from nyamplung oil. The focus of the research is directed to the effect of operating variables on the composition of the resulted biofuel and obtain catalyst performance condition and optimum condition to produce biofuel in the fixed bed reactor. The resulted catalyst can change the nyamplung oil into biofuel. Biofuel from nyamplung oil cracking process showed that the composition is biogasoline, biokerosene and biodiesel. Biodiesel fraction is the highest fraction of the biofuel produced. The highest percentage of biodiesel at a temperature of 400°C was 60%, while the lowest percentage of biodiesel at a temperature of 300°C was 48%. Products density was in the range of 0.81 to 0.86 g/ml. The highest density occured at a reactor temperature of 300 °C was 0.86g/ml. The higher the nitrogen gas flow rate the more the biodiesel formed. At a temperature of 300°C and a nitrogen flow rate of 100 ml/min, the composition solar achieved was 60%.

Crystal Growth of IRMOF-3 (Isoreticular Metal-Organic Frameworks-3) Synthesized using Solvothermal Method Pemta Tia Deka; Ratna Ediati; Didik Prasetyoko
IPTEK Journal of Proceedings Series Vol 1, No 1 (2014): International Seminar on Applied Technology, Science, and Arts (APTECS) 2013
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2014i1.416

IRMOF-3 crystals have been synthesized using solvothermal method by reacting zinc nitrate hexahydrate with 2-amino-1,4-benzenedicarboxylic acid in N'N-dimethylformamide ( DMF ) at 100 °C for 18, 24, 48, 72, 120 and 144 h to observe crystal growth . The obtained crystals were characterized using X - ray Diffraction ( XRD ) , SEM ( Scanning Electron Microscopy ) and Scanning Electron Microscopy - Energy Dispersive X-ray ( SEM - EDX ). Diffractograms of crystals synthesized at heating times of 24 and 48 hours showed major peaks at 2θ of 6.8; 9.6 and 13.7, which are the characteristic peaks of an IRMOF-3 crystal. The size of IRMOF-3 crystals observed using SEM increased with the increase in heating time up to 48 h, then decreased at heating times of 72, 120 and 144 h. The largest IRMOF-3 crystal is of cube shape with a particle size of 500 µm. The weight of the resulting crystals increased with the increase in heating time, then remained constant after 72 h.

Synthesis of UiO-66 Using Solvothermal Method at High Temperature Ika Diah Rahmawati; Ratna Ediati; Didik Prasetyoko
IPTEK Journal of Proceedings Series Vol 1, No 1 (2014): International Seminar on Applied Technology, Science, and Arts (APTECS) 2013
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2014i1.417

UiO-66 solids have been synthesized using solvothermal method in which reaction mixtures of zirconium tetrachloride (ZrCl4) and 1,4-benzenedicarboxylic acid (BDC) in N-N'-dimethylformamide (DMF) were heated at 140 °C for 6, 12, 24, 36, 48, 72 and 144 hours, respectively. The weight of reaction products, in the form white powder, increased with the increase in heating time up to 72 hours, then decreased. Characterization results using XRD showed that the diffractogram of the solid obtained at heating time of 6 h had the same pattern to that of reported UiO-66, characterized by a main peak with a high intensity at 2θ of 7.3°, as well as other characteristic peaks with lower intensity at 2θ of 8.4°; 25.6° and 30.6°. The longer the heating time (12 and 24 h), the lower the intensity of the main peak. When the reaction mixtures were heated for 36 h or longer, the obtained solid diffractograms showed that the main peak intensity at 2θ of 7.3° was lower than the second peak, and new peaks appeared at 2θ of 13.8°; 15.8° and 17.5°. SEM micrographs showed that the solid synthesized for 6 h was in the form of clusters of square morphology, whereas solids synthesized for 72 h showed needle-like surface morphology

Synthesis zeolitic Imidazolate Framework-8 (Zif-8) In Solvothermal: The Effect Comparison of Metal-Ligand Muhammad Nadjib; Ratna Ediati; Yudi Aris Sulistiyo; Lutfiatun Nadifah
Jurnal ILMU DASAR Vol 17 No 1 (2016)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Synthesis of ZIF-8 (zeolitic Imidazolate Frameworks-8) have been successfully carried out by the reaction of zinc nitrate and 2-methylimidazolate in DMF (N'N-dimethylformamide) solvent at a temperature of 120 °C for 24 hours. Synthesis of ZIF-8 has been conducted five times with variations molar ratio of metal (Zn2+):ligand (MeIM) consecutive 1:1; 1:1.5; 1:2; 1:2.5 and 1:3 to study the influence of metal-ligand ratio of the crystallinity and morphology of ZIF-8 that was produced. The results of characterization by X-ray diffraction, FTIR and SEM show that ZIF-8 is synthesized with a ratio of metal: ligand = 1:2 showed the highest crystallinity and has the most irregular surface morphology with form box. Keywords: ZIF-8, solvotermal, metal/ligand ratio

Influence of TiO2/TS-1 Calcination on Hydroxylation of Phenol Ratna Ediati; Maria Ulfa; Hamzah Fansuri; Zainab Ramli; Hadi Nur; Didik Prasetyoko
Journal of Mathematical and Fundamental Sciences Vol. 46 No. 1 (2014)
Publisher : Institute for Research and Community Services (LPPM) ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.math.fund.sci.2014.46.1.7

Titanium oxide (TiO2) was impregnated on the surface of titanosilicate-1 (TiO2/TS-1) and used as catalyst for hydroxylation of phenol with hydrogen peroxide. Calcination was conducted at various temperatures (400, 500, 600 and 700°C)in order to observe the effect on the structure and physicochemical properties towards catalytic activity for producing hydroquinone. The structure and physicochemical properties of the TiO2/TS-1 catalyst were characterized by several techniques, such as X-ray diffraction (XRD), infrared spectroscopy, nitrogen adsorption, pyridine adsorption and hydrophilic measurement. The results show that by increasing the calcination temperature,the surface acidity of the catalyst was also increased.TheTiO2/TS-1 catalyst calcined at 500°Cproved to be optimal for hydroquinone production, in which the anatase-rutile phase may be present dispersed on the MFI framework.

Pengaruh Doping Ni(II) pada Sintesis UiO-66 secara Solvotermal dengan Modulator Asam Format Afifah Rosyidah; Adhisti Widdhiantari; Ratna Ediati
Akta Kimia Indonesia Vol 1, No 1 (2016)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember

Sintesis UiO-66 dengan doping 10% Ni(II) telah berhasil dilakukan menggunakan metode solvotermal dengan modulator asam format pada suhu 120°C selama 24 jam. Padatan hasil sintesis dianalisis menggunakan XRD, FTIR, SEM-EDX, TGA, dan adsoprsi-desorpsi isotermal N2. Difraktogram XRD padatan hasil sintesis memiliki dua puncak utama pada sudut 2θ = 7,4° dan 8,5° yang sesuai dengan difraktogram UiO-66 standar. Spektra FT-IR menunjukkan bahwa padatan hasil sintesis memiliki pita-pita serapan karakteristik yang dimiliki material UiO-66.Foto SEM menunjukkan bahwapenambahan modulator asam format menghasilkan morfologi yang lebih besar. Hasil adsorpsi-desorpsi N2 menunjukkan bahwa luas permukaan BET meningkat menjadi 1.020,433 m2/g setelah doping Ni(II) dan penambahan modulator asam format. Namun doping Ni(II) dan penambahan modulator asam format menurunkan stabilitas termal UiO-66 menjadi 434°C

Pengaruh Perbandingan Pelarut Etanol dan Dimetilformamida pada Sintesis Metal Organik Framework HKUST-1 Ratna Ediati; Mary Kahardian; Djoko Hartanto
Akta Kimia Indonesia Vol 1, No 1 (2016)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember

Material Metal Organic Framework tipe HKUST-1 dengan rumus molekul [Cu3(BTC)2(H2O)3].xH2O telah disintesis menggunakan prekursor tembaga nitrat trihidrat dan asam 1,3,5 benzenetrikarboksilat melalui metode solvotermal dalam autoklaf dengan variasi volume pelarut etanol dan dimetilformamida pada suhu 100 oC selama 10 jam. Setelah padatan hasil reaksi disaring dan dicuci dengan metanol, diperoleh kristal Cu-BTC berbentuk serbuk berwarna biru cerah. Kristal Cu-BTC dikarakterisasi menggunakan teknik difraksi sinar-X, FT-IR, SEM, Energi Dispersi Sinar-X (EDS) dan TGA. Semua kristal yang didapat memiliki derajat kristalinitas yang tinggi dan menunjukkan kristal berbentuk oktahedral. Cu-BTC yang dihasilkan stabil dengan pemanasan hingga suhu ~350 oC. Keberadaan DMF menyebabkan ukuran kristal Cu-BTC lebih besar sedangkan Pengurangan volume pelarut DMF menyebabkan penurunan massa kristal yang terbentuk dan kurang homogen

Influence of Solvothermal Temperatures and Times on Crystallinity and Morphology of MOF-5 Tri Ana Mulyati; Ratna Ediati; Afifah Rosyidah
Indonesian Journal of Chemistry Vol 15, No 2 (2015)
Publisher : Universitas Gadjah Mada

MOF-5 (metal-organic frameworks-5) have been synthesized using solvothermal method in which reaction mixtures of zinc nitrate hexahydrate and 1,4-benzenedicarboxylic acid (BDC) in dimethylformamide (DMF) were heated at various heating temperatures and times in order to observe the influence of heating temperature and time on crystallinity and morphology of the obtained MOF-5. The heating temperatures used were 105, 120 and 140 °C, respectively with heating times of 12–144 h. Determination of the best reaction conditionswas based on the observation of phase purity and crystal morphology of MOF-5 using XRD and SEM. The characterization results showed that MOF-5 crystals with a higher crystallinity were obtained when the reaction mixtures were heated at 105 °C for 144 h, 120 °C for 24 h or 140 °C for 12 h. The maximum weight of MOF-5 crystal was generated from reaction mixture heated at 120 °C for 72 h.

Impregnation Nickel on Mesoporous ZSM-5 Templated Carbons as a Candidate Material for Hydrogen Storage Ratna Ediati; Amirul Mukminin; Nurul Widiastuti
Indonesian Journal of Chemistry Vol 17, No 1 (2017)
Publisher : Universitas Gadjah Mada

A series of carbon with ZSM-5 mesoporous (ZMC) and Ni/ZMC ZSM-5 templates were synthesized and gravimetrically known its adsorption capacity to H2 gases. ZMC carbon was synthesized using a hard template method at a carbonation temperature of 900 oC with sucrose as a source of carbon. A mesoporous ZSM-5 template was synthesized by using a hydrothermal method at an aging and crystallization temperature of respectively 60oC and 150oC for as long as 24 hours. The characterized result of ZMC carbon using XRD powder has shown a diffracted pattern of amorphous carbon. Impregnating Ni with ZMC carbon each resulted in 5%, 15% and 25% of weight, which in turn also resulted in a diffractogram pattern of Ni/ZMC-5, Ni/ZMC-15, and Ni/ZMC-25, where each patterns were uniform and had no additional peaks. The results of SEM-EDAX showed that Ni had been successfully impregnated on the surface of ZMC carbon with a random morphology surface of ZMC carbon. The isothermal results of adsorption – desorption of N2 showed that the larger the Ni loading on the supporting ZMC carbon, the smaller the surface area of the ZMC specific carbon. The distribution of the pore size that was counted by using the BJH method, which was applied to all the samples, was as big as 3,8 nm. The adsorption capacity of H2 was measured by using the gravimetry method at ambient temperature for Ni/ZMC-5, Ni/ZMC-15, and Ni/ZMC-25, which each gave a weight percentage of 0,331%; 0,663% and 0,649% respectively, whilst the ZMC carbon has a weight of 2,18%.

Induced roll magnetic separator applied for high grade ilmenite separation from mining tailing Wiwik Dahani; Rita Sundari; Subandrio Somali; Irfan Marwanza; Andriyani Andriyani; Djoko Hartanto; Khuzaimah Arifin; Ratna Ediati
SINERGI Vol 27, No 2 (2023)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2023.2.015

This article aimed to separate ilmenite (FeTiO3) mineral from tin tailing applying a single splitter IRMS (Induced Roll Magnetic Separator). Ilmenite mineral is the substantial main source for TiO2. This work used air table middling for feeding. The mineral components of middling feeding from air table using grain counting analysis were found as follows: cassiterite (48.61%), ilmenite (21.36%), monazite (18.56%), pyrite (4.60%), zircon (5.85%), quartz (0.71%), anatase (0.27%), and tourmaline (0.02%), It was found that electrical current and opening of single splitter affected the degree of separation addressing to ilmenite recovery and ilmenite grade. The finding showed that current of 15 Ampere and single splitter with opening 4.25 cm yielded ilmenite recovery more than 74%. The high grade ilmenite (90.46 %) and recovery of 29.38% was obtained using 5 Ampere with single splitter opening of 1.0 cm. Up to date, the study on ilmenite separation from tailing only focused on the effect of current, however, the effect of single splitter magnetic separator to enhance ilmenite recovery from other paramagnetic minerals such as monazite, siderite, xenotime and tourmaline has not yet been reported.

Co-Authors Achmad Roesyadi Adhisti Widdhiantari Afifah Rosyidah Afifah Rosyidah Agus Budianto Ahnaf, Ahnaf Aishah Abdul Jalil Amirul Mukminin Amirul Mukminin Andriyani Andriyani Aulia, Wulan Che Ku Nor Liana Che Ku Hitam Cicik Herlina Yulianti Danawati Hari Prajitno Darminto Darminto Dedy Yudianto Dety Oktavia Sulistiono Didik Prasetyoko Djoko Hartanto Djoko Hartanto Ekky Riza Enggawati Endang Purwanti Endang Purwanti Endang Purwanti S. Farhan Fikri Safii Gina Aswari Intan Pertiwi Hadi Nur Hamzah Fansuri Humaira, Siti Syahda Ika Diah Rahmawati Imroatul Qoniah Iqbal, Rendy Muhamad Irfan Marwanza Irianto, Mochammad Yusuf Irmina Kris Murwani Murwani Kavitaningrum Kavitaningrum Khuzaimah Arifin Kris Murwani, Irmina Kusno Budhikarjono Kusumawati, Yuly Liyana Labiba Zulfa Lutfiatun Nadifah Lutfiatun Nadifah M Khoirul Maza Maria Ulfa Martia, Ulva Tri Ita Mary Kahardian Muhammad Nadjib, Muhammad Mulyati, Tri Ana Munaji Munaji Nadjib, Muhammad Naimatul Khoiroh Nurul - Widiastuti Pambudi, M. Anugrah Rizky Pemta Tiadeka Pradipta Pangastuti Prayogo, Nanda Purwanti S., Endang Purwanti, Endang Purwasusanti, Nungky Rachman, Rahadian Abdul Rahmawati, Siti Irma Rakhmadi Harsanto Rita Sundari Sholahus Shomadany Shomadany, Sholahus Silvana Dwi Nurherdiana Subandrio Sunaryono Sunaryono Tri Ana Mulyati Tri Ana Mulyati Tri Esti Purbaningtias Triwikantoro Triwikantoro Wiwik Dahani Yoshifumi Chisaki Yudi Aris Sulistiyo, Yudi Aris Zainab Ramli

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