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All Journal JURNAL KIMIA SAINS DAN APLIKASI INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Kimia Terapan Indonesia Indonesian Journal of Chemistry Lembaran Publikasi Minyak dan Gas Bumi Jurnal Sains Terapan : Wahana Informasi dan Alih Teknologi Pertanian Jurnal Rekayasa Kimia & Lingkungan

Komar Sutriah

Department Of Chemistry, Faculty Of Mathematic And Natural Sciences, Bogor Agricultural University, Darmaga Campus, Fapet Building W2 Lt 4-5, Agatis Street, Bogor 16680

Author-ID : 397447

Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Physics Social Sciences Veterinary

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Articles

SURFAKTAN BERBASIS MINYAK SAWIT UNTUK APLIKASI EOR PADA LAPANGAN MINYAK INTERMEDIET (Surfactant based on Palm Oil for EOR Application at Intermediate Oil Field ) Eni, Hestuti; Sutriah, Komar; Muljani, Sri
Lembaran publikasi minyak dan gas bumi Vol 51, No 1 (2017)
Publisher : PPPTMGB "LEMIGAS"

Peningkatan produksi minyak tahap lanjut (EOR) perlu dilakukan pada lapangan minyak tua dengan kandungan minyak masih tinggi. Injeksi kimia, khususnya surfaktan sebagai bagian dari aplikasi EOR sudah terbukti mampu meningkatkan perolehan minyak dari lapangan minyak tua. Dewasa ini surfaktan berbasis minyak sawit mulai dikembangkan. Selain surfaktan ini mampu menurunkan tegangan antarmuka sebagaimana yang dipersyaratkan surfaktan sebagai chemical EOR, ketersediaan minyak sawit yang melimpah dan merupakan bahan baku yang terbarukan juga menjadi alasan mengapa dilakukan penelitian sintesa surfaktan berbasis minyak sawit untuk aplikasi EOR ini. Beberapa surfaktan berbasis minyak sawit disintesa, yaitu surfaktan MES, BES dan PDS. Ada tiga varian surfaktan PDS yaitu PDSH1, PDSH2 dan PDSH3. Parameter uji screening seperti kompatibilitas, tegangan antarmuka (IFT), filtrasi, dan ketahanan panas dilakukan sebelum diaplikasikan pada lapangan minyak intermediet. Dari kelima varian surfaktan, didapatkan formula terbaik 1% surfaktan PDSH3 yang memenuhi criteria pada uji screening. Karakterisasi FTIR dan analisa gravimetri thermal dilakukan untuk menentukan gugus fungsi sulfonat dan mengukur degradasi perubahan massa surfaktan terhadap panas. Uji injeksi kimia skala laboratorium dilakukan untuk mengetahui seberapa besar peningkatan perolehan minyak yang dihasilkan.Enhanced oil recovery (EOR) should be done on mature oil fields with high remaining oil. Chemical injection,especially surfactantas a part of EOR application had proven able to increase oil recovery from mature oil fields. Nowadays, surfactants based on palm oil begin to be developed. Besides it can produce low interfacial tension as required as chemical EOR, the availability of oil palm whose abundant and palm oil as a renewable raw material are also the reasons why the research of synthesis surfactants based on palm oil to the application of eor was done. Several surfactants based on palm oil was synthesized, namely MES, BES and PDS.There are three varians of PDS surfactants, PDSH1, PDSH2 and PDSH3. Parameter screening tests such as compatibility test, interfacial tension, filtration test, and thermal stability test have been done before applied in intermediete oil field. From these surfactants obtained best formula 1% PDSH3 surfactant what fulfill criteria parameter screening tests. FTIR characterizations and thermal gravimetric analysis conducted to determine functional group of sulfonate and measuremass change in materials associated with transition and thermal degradation. Coreflooding test performed to determine increasing oil recovery.

Perencanaan Kebutuhan Pranata Laboratorium Pendidikan di Institut Pertanian Bogor: Requitment Planning of Laboratory Education Staff at Bogor Agricultural University Eko Prasetyo; M. Syamsul Maarif; Komar Sutriah
Jurnal Sains Terapan : Wahana Informasi dan Alih Teknologi Pertanian Vol. 6 No. 1 (2016): Jurnal Sains Terapan, Volume 6 Nomor 1, Tahun 2016
Publisher : IPB University

The objective of the research was to analyze requirement planning, ideal number as well as formulating planning strategy for Laboratory Education Staff (LES) at Bogor Agricultural University. Data was collected by filling the questionnaire and interview with laboratory staff of Bogor Agricultural University, then documentation. Completely randomized design and Antilon (anti-ln/enilai y) was performed to analyze the data, then geometric mean value was analysed by qualitative descriptive, whereas formulation of strategy was performed by SWOT matric. The result shows that time activities allocation by LES were still low as well as less ideal number of LES. In addition, according to SWOT matric analysis, formulation of the strategies to improve work quality of LES were development of staff capability, providing adequate tools and materials, escalating of staff performance and refinement of leadership manner.

Performance of Doped Montmorillonite on Photosensitizer Based Natural Dyes Gardenia Jasminoides Sri Mulijani; Komar Sutriah; Gustini Syahbirin; Shabrina Shabrina
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 12, No 1 (2022): IJAP Volume 12 ISSUE 01 YEAR 2022
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v12i1.54786

Dye Sensitized Solar Cell (DSSC) is an electrochemical cell that is able to convert solar energy from light to electrical energy. This technology is needed by the world as a renewable and environment friendly energy. In this study, we evaluate the consideration of modification montmorillonite and Gardenia jasminoides dyes may achieve better performance of DSSC by manufactured DSSC with modified TiO2 semiconductors using montmorillonite (MMT) and Nafion. Performance of DSSC was determined by potentiometer. Atomic force microscope was used to evaluate the characteristic of DSSC. The UV-vis results revealed that the dyes which is extracted from the Gardenia jasminoides content crocin and quercetin compounds. Modification DSSC contains ratio of MMT: nafion (50:50) exhibited highest power conversion efficiency value of 0.8316%. Topography of surface ensured the dyes have occupied surface area and able to promote electron to higher energy. However, MMT and nafion capable to enhance potential of dyes as photosensitizer in DSSC.

PENGARUH TEKNIK SINTESIS TERHADAP KUALITAS PRODUK FATTYAMINA SEKUNDER Komar Sutriah; Zainal Alim Mas'ud; Tun Tedja Irawadi
Jurnal Kimia Terapan Indonesia Vol 13, No 1 (2011)
Publisher : Research Center for Chemistry - LIPI

Secondary fattyamines has been synthesized by reacting primary fatty amines with acylchlorides and continued with reducing the corresponding secondary fattyamides formed to secondary fattyamines using LiAIH<I'Fatty amines are raw material of natural-based surfactants that can be derived from fatty acids, olefins, or alcohols, of which can be synthesized from natural sources such as palm oil. Conversion of secondary fatty amides to secondary fatty amines was evaluated through the quality of FTIR spectra on wave number of 1639-1645 em' (C=O vibration) and 1544-1555 em" (vibrations of C-H and of secondary amine N-H). Method of synthesis by using closed reflux syncore reactor was better than those of using microwave teflon tubes, and open reflux. The yield of 9 different secondary fatty amines obtainedfrom 5 to 27 replicates by the closed reflux syncore reactor method varied from 17%to 96%.Keywords: Natural-based surfactant, secondary fatty amines

Preparation and Characterization of Carbon Foam Derived from Fine Coal and Phenolic Resin Dodi Irwandi; Zainal Alim Mas’ud; Komar Sutriah; Muhammad Khotib
Indonesian Journal of Chemistry Vol 16, No 3 (2016)
Publisher : Universitas Gadjah Mada

Carbon foam from fine coal and phenolic resin mixture had been prepared by heating in nitrogen atmosphere. The composition of fine coal in a mixture was 30, 35, 40, 45 and 50%. Physical and mechanical characters of carbon foam that were determined from each of these compositions were density, porosity, compressive strength, and oxidation resistance and thermal insulation. Microstructure was observed by scanning electron microscope (SEM). Thermal insulation was tested using an insulation index approach with Styrofoam for comparison. The result showed that the density and compressive strength were proportional to the composition, otherwise, the porosity. Oxidation resistance that was up to 45% composition still showed proportional value. Microstructure observations showed an irregular distribution of pore and uninform diameter. Insulation index of 34 to 50 °C showed almost the same values of all compositions and greater than styrofoam up to 50-150% which mean carbon foam had a better thermal insulation properties than styrofoam.

Thermodynamic and Kinetic Study of Zinc bis-(Dipalmithyl Dithiophosphate) Activity as Anti-Corrosion Additive-Fatty Acid Based Through Potentiodynamic Polarization Technique Komar Sutriah; Zainal Alim Mas’ud; Mohammad Khotib; Denar Zuliandanu
Indonesian Journal of Chemistry Vol 16, No 2 (2016)
Publisher : Universitas Gadjah Mada

Zinc bis-(dipalmithyl dithiophosphate) (ZDTP16) is one product variant of zinc dialkyl dithiophosphate (ZDTP)-fatty acid based having function as corrosion inhibitor. By using 3% of effective dose for the application, its effectiveness of ZDTP16 corrosion inhibition will achieve 97% and it will be able to decrease Cu metal corrosion rate from 0.152 to 0.004 mm per year. Thermodynamic and kinetic parameter verification indicates the decreasing of spontaneity and corrosion rate by existence of ZDTP16 inhibitor. Gibbs free energy transition corrosion of Cu metal in electrolyte medium is measured in corrosion simulator increased from +85.22 to +91.77 kJ mol-1, while its activation energy increased from +16.66 to +33.68 kJ mol-1. Morphology observation of Cu metal substrate surface using SEM-EDX shows that the adsorption of ZDTP16 at substrate surface is able to protect surface from corrosion indicated by the existence of Zn, P, S, and C constituents representing composer atoms of ZDTP16, and the decreasing of Cl- corrosive constituent at substrate surface.

Kompatibilitas Nanokristal Selulosa Termodifikasi Setrimonium Klorida (CTAC) dalam Matriks Poliasam Laktat sebagai Material Pengemas Nina Hartati; Tetty Kemala; Komar Sutriah; Obie Farobie
Jurnal Kimia Sains dan Aplikasi Vol 22, No 4 (2019): Volume 22 Issue 4 Year 2019
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Growth of population increases the consumption of nonbiodegradable plastic which causes waste buildup. Diversion of plastic material from nonbiodegradable material to biodegradable is an important alternatif. PLA is a plastic polymer that is easily degraded but very brittle. Palm oil waste containing oil palm empty bunches has the potential as a reinforcement material because the cellulose content is 30-40%. Minimizing size to nanoscale will increase the surface area and dispersion ability of cellulose dispersibility into the PLA polymer matrix, thus increasing compatibility in terms of and mechanical properties and surface morphology of the composite. Hydrolysis by strong acid and centrifugation at 5000 rpm succeeded in making cellulose nanocrystal with index of polidisperse 0.5 and average particle diameter of 7.967 nm. CTAC as a solubilizer and surface modifier agent successfully made interaction to cellulose nanocrystal as confirmed on absorption at wave number 2850 cm-1, 2960 cm-1 and 720 cm-1. Modified At the fixed CTAC concentration of 0.2 mol, the best mechanical properties of CNC-PLA composites were obtained in the composition ratio of 90: 10 with tensile strength of 26.295 MPa, elongation break of 68.18%, and Young modulus of 0.387 Gpa. The greater the CTAC added to nanocrystal cellulose, the lower the reinforcement value and the less reduction. Based on the results of morphology surface characterization, PLA surfaces required for degradation were obtained.

Adsorption of Methylene Blue by Graft Copolymer Acrylamide onto Pineapple Peel Cellulose with the Addition of Activated Carbon Microwave-Assisted Putri Permatasari; Komar Sutriah; Mohammad Khotib
Jurnal Rekayasa Kimia & Lingkungan Vol 18, No 1 (2023): Jurnal Rekayasa Kimia dan Lingkungan (January-June, 2023 )
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v18i1.26894

Cationic dyes such as methylene blue are among the most widely used dye in the textile and paper industry. The dye waste produced causes environmental pollution and is harmful to human health. Thus, wastewater treatment becomes an important aspect of reducing this problem. Adsorption is a very effective method for treating various wastewaters due to its high selectivity and capacity. This study aims to prepare an adsorbent from graft copolymer acrylamide onto cellulose with the addition of activated carbon microwave-assisted and to test its performance as an adsorbent for methylene blue. The adsorbent synthesis was carried out using a microwave-assisted graft copolymer technique. The graft of acrylamide onto cellulose with the addition of activated carbon was carried out at various times (3, 4, and 5 minutes). Based on the FTIR spectra characterization of the adsorbent, the functional groups are C=O and N-H, and SEM analysis shows that the surface forms an interconnected network. At 3, 4, and 5 minutes of irradiation, grafting ratios were 329.72, 128.00, and 150.12, with grafting efficiency of 99.74, 72.94, and 78.02%. The maximum adsorption capacity of the adsorbent on methylene blue was 14.00, 6.04, and 9.97 mg/g, respectively, following the Langmuir isotherm model and pseudo second order kinetics. The experimental results show that the adsorbent can effectively remove or eliminate methylene blue in an aqueous solution.

Co-Authors Denar Zuliandanu Dodi Irwandi Eko Prasetyo Gustini Syahbirin Hestuti Eni M. Syamsul Maarif Mohammad Khotib Mohammad Khotib Muhammad Khotib Muljani, Sri Muljani, Sri Nina Hartati Obie Farobie Putri Permatasari Shabrina Shabrina Sri Mulijani Tetty Kemala Tun Tedja Irawadi Zainal Alim Mas'ud Zainal Alim Mas’ud Zainal Alim Mas’ud

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