Browsing by Author "Tamboesai, Emrizal Mahidin"

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    ADSORPSI ZAT WARNA CONGO RED MENGGUNAKAN ZEOLIT ALAM TERAKTIVASI
    (2016-10-12) Lasmana, Andrik; Mukhtar, Akmal; Tamboesai, Emrizal Mahidin
    The increase in the adsorption capacity of the zeolite can be done by modifying the zeolite. This research aims to use the activated zeolite for adsorption of the dye congo red with some parameters. Preparation of adsorbent begins with the physical activation by heating for 2 hours at a temperature of 3000C. Zeolite was characterized using X-Ray Diffraction (XRD) and Fourier transform infrared (FTIR). Parameters for congo red dye adsorption were analyzed mass, contact time and pH. Adsorptiont process was done by varying the mass (0.1, 0.5, 1 and 1.5 g) , the contact time (30,60,90 and 120 minutes), and pH (1, 3, 5, 7 dan 9) and measured using UV-Vis Spectrofotometri. All adsorption values obtained were compared between natural zeolite activated and non-activation of natural zeolite. The results indicate that activation zeolite better absorption than the non-activation of zeolite. The optimum condition for adsorption was at mass (0.1 g), time (90 minutes) and pH 3 which activated zeolite for adsoption percentage reached 95.49% while the non-activation zeolite adsorption percentage of only 44.65%
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    ANALISIS RANGKAIAN RLC UNTUK DRIVEN POTENTIAL MENGGUNAKAN METODE KOMPUTASI
    (wahyu sari yeni, 2019-07-22) Siregar, Ones Simus Friandi; Tamboesai, Emrizal Mahidin
    Petroleum is energy source used in industry, transportation and household. The increase in petroleum demand is not balanced with its production, thus causing to an energy crisis. One way to solve this problem is the correlation study, which can be used to determine the genetic relationship in oil wells. The correlation study of production wells in the Batara Utara-Jambi area and Duri-Riau has never been. Correlation study conducted on Betara Utara oil samples and Duri oil provide an overview of genetic relations, depositional environment, source rock. Crude oil samples from the Betara Utara well and spines fractionated by column chromatography produce saturated hydrocarbons which analyzed by Gas Chromatography (GC). Based on the abundance of aliphatic hydrocarbons, the petroleum sample has a low ratio of Pr / n-C17 and Ph / n-C18 which is 0.56-0.38 and 0.15-0.17. A low ratio indicates the origin of the oil from organic material (terrestrial) . The oil deposition environment came from the environmental lacustrine (lake) has a value of Pr / Ph ratio 2.58 – 2.88. The results of the star diagram showed that the oil samples from the North Betara and Duri- Riau production were unconnected.
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    APLIKASI GEOKIMIA RESERVOAR DI CEKUNGAN SUMATRA TENGAH MENDETEICSI KEBOCORAN PIPA PRODUKSI MINYAK BUMI DALAM SUMUR PRODUKSI (SUMUR X)
    (2014-01-23) Tamboesai, Emrizal Mahidin
    A Production well (X well) in the Thal Area Riau, produce two types of crude oil; light oil and waxy oil. These type oil is obtained from two different strata reservoir that is, A reserroar (1762, 6 m) and B reservoir (1900,5 m). The double string production pipes distribute the crude oil from A reservoar (shortstring) and B reservoar (long string). Two types of methods, ROF GC and biomarker have been used to study reservoar geochemisry of X well. The study showed that there are mix between oil from reservoar A and B. The mix is coused by corrotion in the pipe line. The mix increased from 4 % in 1979 to 95 % in 2001. The reservoar show that Goechemistry rservoar can be applied to prevent even to improve the efficiency of production of X-Well in the future
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    DAYA ADSORPSI METANIL YELLOW DENGAN MENGGUNAKAN ZEOLIT ALAM TERAKTIVASI HCl
    (2016-10-12) Manatap, Johan Unduk; Mukhtar, Akmal; Tamboesai, Emrizal Mahidin
    The increased efficiency or optimization of zeolite adsorbent can be done through chemical activation. The activator used in this study was HCl 1M solution. The adsorbent was characterized by XRD. Activated zeolite (ZAT) and unactivated zolite (ZA) were applied for removal metanil yellow from aqueous solution using batch method with the variation of adsorbent dose (gram), contact time (inute), pH and initial concentration of the dyestuff. The result showed that, optimum time of contact occurred at 60 minute and 90 minute for activated zeolite and unactivated zeolite respectively with optimum pH occurred at pH 2. The adsorpstion using activated zeolit was better than unactivated zeolite, with capacity adsorption was 1,3862 mg/g with removal percentage 71,1672% compared unactivated zeolite with capacity adsorption is 1,0410 mg/g with removal percentage 53,4457%. The types of adsorption for both adsorbents followed Langmuir adsorption.
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    DEGRADASI LIMBAH CAIR PABRIK KELAPA SAWIT DENGAN KATALIS MANGAN OKSIDA MELALUI TAHAP ADSORPSI MENGGUNAKAN FLY ASH TERAKTIVASI MICROWAVE
    (perpustakaan UR, 2021-08) Nopriyani, Indri; Awaluddin, Amir; Tamboesai, Emrizal Mahidin
    Palm oil mill effluent (POME) was considered to be harmful as it contains high COD. It requires immediate treatments before it discharges into the environment. The existing treatment systems are time-consuming (100-120 days), obsolete and needs large pond areas. In this study, a Fenton-based advanced oxidation process was introduced and studied, along with the pre-treatment process via adsorption using activated fly ash. The ash was prepared from fly ash produced from the burning process of oil palm shells and was activated using a home-made microwave. The Fenton process was realized using a Birnessite-type manganese oxide heterogeneous catalyst. The composition ash was determined by XRF. The results of XRF showed that fly ash contained SiO2 compounds of 40.78% and increased after activation to 62.85%. .The POME quality following the treatment process was monitored with the measurement of COD. The result showed that the maximum reduction in COD concentration in this tandem process was 68.89% obtained at 25 mg of the adsorbent, diluted waste POME concentration (10:90, v/v), and H2O2 concentration of 17,000 mg/L in 60 minutes.
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    DEGRADASI LIMBAH CAIR PABRIK KELAPA SAWIT OLEH KATALIS δ-MnO2 MENGGUNAKAN TAHAP PRE-TREATMENT DENGAN ADSORBEN FLY ASH TERAKTIVASI HCl
    (perpustakaan UR, 2021-08) Handayani, Syahfitri; Tamboesai, Emrizal Mahidin; Tamboesai, Emrizal Mahidin; Awaluddin, Amir
    Fresh Palm oil mill effluent (POME) is a thick brownish colour in the viscous and colloidal suspension, having an unpleasant odour and high value of BOD and COD, thus sensitive to environmental issues. The most widely used ponding systems for POME treatment have to ways such as long hydraulic retention time (HRT), obsolete, and require large area pond. Alternative treatment systems need to be introduced and studied to anticipate incoming problems associated with the limitations of the current system. In this study, the adsorption-degradation process was investigated for the treatment of the POME. The adsorption process was conducted using the adsorbent of palm oil fly-ash activated with HCl solution at a temperature of 105 oC for 24 hours. The composition of activated ash was determined by X-ray fluorescence (XRF) and contains SiO2 (47.778%), CaO (20.646%), K2O (6.041%), P2O5 (12.586%), MgO (6.324%) and Fe2O3 (4.304%). The adsorption process was able to reduce 37.50% of the initial COD value using 0.025 mg/L mg of activated fly ash, POME volume 100 ml for 15 minutes of reaction time. Whereas the degradation of POME following the adsorption process by layer birnessite (δ-MnO2) catalyst, H2O2 concentration of 17,000 mg/L and POME volume 20 mL in 60 minutes further reduced 61.33% of COD value. These tandem processes seem to be promising to tackle the POME issue in near future
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    KAJIAN BIOMARKER STEARANA UNTUK MENUNJUKKAN HUBUNGAN GENETIK MINYAK BUMI DURI RIAU, CEKUNGAN SUMATERA TENGAH
    (2014-01-23) Tamboesai, Emrizal Mahidin
    To understand genetically relation between the old oil well ( X, Y and Z ) production having the same physical properties in WKP Chevron and a new well ( W ). The biomarker Stearana studies were conducted using Petroleum Geochemistry. Fingerprint of crude oils from GC-MS Analysis show that the genetic correlation among them are positive. However the new oil well W had a higher positive correlation to the well Z compared to the old well X and Y
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    KAJIAN GEOIUMIA MOLEKULAR UNTUK MENUNJUKKAN TINGKAT KEMATANGAN MINYAK BUMI DURI RIAU, CEKUNGAN SUMATERA TENGAH
    (2014-01-23) Tamboesai, Emrizal Mahidin
    Penelitian ini bertujuan untuk melakukan kajian biomarker untuk menunjukkan tingkat kematangan minyak bumi Sumur W yang baru diketemukan terhadap minyak bumi sebelumnya dad beberapa sumur minyak bumi dalam satu lapangan produksi di cekungan Sumatera Tengah. Kajian geokimia molekular ini akan dapat menunjukkan tingkat kematangan minyak bumi Duri yang ba' ditemukan (W) dan juga dapat menunjukkan dengan minyak bumi dari sumur produksi yang mana minyak bumi dari sumur barn tersebut memiliki korelasi tingkat kematangan yang paling dekat. Penelitian ini dilakukan dengan mengidentifikasi senyawa biomarker di dalam minyak bumi dari masing-masing sampel teranalisis, menentukan parameter geokimia molekular yang terdeteksi di dalam minyak bumi untuk selanjutnya digunakan untuk mengelompokkan minyak bumi berdasarkan tingkat kematangannya. Identifikasi senyawa biomarker dilakukan berdasarkan data yang diperoleh dari analisis kromatografi gas-spektrometri massa (GC-MS).
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    KAJIAN GEOKIMIA MOLEKULER MINYAK BUMI DARI LADANG MINYAK BUMI BAKAU DAN BERUK (BLOK SELAT PANJANG) MENGGUNAKAN DISTRIBUSI BIOMARKER (GAMMASERANA, HOPANA, DAN OLEONANA)
    (2020-08) Parlaungan, Parlaungan; Tamboesai, Emrizal Mahidin
    Petroleumgeochemistry is an application of chemical principles to study the origin, migration and accumulation of petroleum and its use in exploring and obtaining petroleum. The oil wells originating from Bakau and Beruk are oil wells that have recently been discovered and there is no molecular gheochemical study yet. Samples from oil wells Bakau and Beruk were fractionated by chromatography column into aromat fractions then analyzed for biomarker compounds using gas chromathography-mass spectroscopy (GC-MS) m/z 191. Based on the ratio hopana petroleum from Bakau (0,63) and Beruk (0,50) and the level of maturity is early mature. Determination of the origin of organic material using the parameters oleonana in Bakau and Beruk oil (1,72 and 1,04) indicates from organic matter of land plants (angiospermae). Bakau and Beruk peroleum re in the depostional environment with non hypersalin content as evidenced by the parameters of gammaserana in the Bakau and Beruk petroleum (0,10 and 0,48). Correlation studies with start chart show that oil from Bakau and Beruk petroleum is negatively correlated.
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    KAJIAN TENTANG DISTRIBUSI BIOMARKER TRITERPANA (TRISIKLIK/HOPANA, BISNORHOPANA , DAN TRISIKLIK C25/C26) MINYAK BUMI ASAL BAKAU DAN BERUK (BLOK SELAT PANJANG), RIAU
    (2020-08) Syafi’i, Muhammad; Tamboesai, Emrizal Mahidin
    The biomarker is a chemical indicator of organic material sources that can be used as an indicator of the depositional enviroment, correlation of oil and the origin of oil sources. Bakau and Beruk Oil is one of the newly discovered oil fields located in the Selat Panjang Block, Riau. Petroleum samples from Bakau and Beruk were fractionated using the chromatography column into an aromat fraction. Analysis of aromat fraction using chromatogafi gas-mass spectroscopy (GC-MS) m/z 191. This study aims to determine the level of maturity, the depositional environment and the correlation of petroleum using biomarker parameters (tricyclic C25/C26, tricyclic/hopana and bisnorhopana). The results showed the Pr/Ph value of Bakau petroleum 1.20 and Beruk 1.57; Pr/n-C17 Bakau 0,73 and Beruk 0,4, Ph/n-C18 Bakau 0.13 and Beruk 0.19, trisklik/hopana value of petroleum Beruk and Bakau are 1.069 and 0.156. The tricyclic parameter C25/C26 each value is Beruk 0,878 and Bakau 1,289. The tricyclic/hopana value shows that Beruk oil is more mature than Bakau, while Tricyclic parameter C25/C26 shows that Beruk oil comes from lakes, while Bakau oil from the mainland. Pr/Ph values indicate an oxidative depositional environment. The bisnorhopana parameter shows that Beruk petroleum is derived from organic chemoautotrophic bacteria while Bakau is not derived from chemoautotrophic bacteria. The uncorrelated Bakau and beruk petroleum shown by the star diagram.
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    KAMAN GEOKIMIA MOLEKULAR M1NYAK BUMI SUMURPRODUKSI DURI, LANGGAK DAN MINAS, RIAU
    (2014-01-23) Tamboesai, Emrizal Mahidin
    Cekungan Sumatera Tengah merupakan salah satu penghasil minyak bumi terbesar di Indonesia khususnya di daerah Minas, Duni, dan Langgak Riau. Beberapa tahun belakangan ini, produksi minyak bumi di daerah tersebut mengalami penurunan. Karena banyak di dapat sumur-sumur yang tidak aktif lagi ( sumur tua) tetapi masih mengandung minyak mentah sebanyak 30% hingga 60% dari kandungan aslinya ( Purwono, 2008). Untuk mempertahankan produksi maka perlu dalakukankegiatan eksplorasi minyak bumi dengan menggunakan kajian goekimia molekular yang dapat mengurangi resiko kegagalan ekploitasi minyak bumi. Geokimia molekuler merupakan parameter penting dalam studi korelasi antar sumur produksi dari Cekungan Sumatera Tengah.Studi ini dimaksudkan untuk mengetahui hubungan genetika minyak bumi antar sumur produksi dari lapangan Minas, Duri, dan Langgak. Dalam penelitian ini sampel minyak mentah diidentifikasi dengan analisis Kromatografi Gas (GC) dengan kromatogram yang diperoleh menampilkan sidikjari (fingerprint) yang khas dari sampel minyak bumi, selanjutnya digunakan untuk menunjukkan ada atau tidaknya hubungan genetika diantara minyakminyak dari sumur yang berbeda. Diagram bintang merupakan metode yang digunakan untuk menunjukkan adanya persamaan dan perbedaan genetik dari sampel teranalisis.Dari hasil analisis, sampel minyak lapangan Dun berkorelasi positif dengan sampel minyak lapangan Langgak. Sampel minyak bumi Dun dan Langgak berkorelasi negatif dengan sampel minyak lapangan Minas.Dengan mengetahui adanya korelasi minyak bumi, dapat membantu dalam tindakan pengurasan minyak (Enhanced Oil Recovery) dengan cara yang sesuai.
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    KARAKTERISASI DAN PENENTUAN TINGKAT KEMATANGAN MINYAK BUMI BLOK BANGKO-ROKAN HILIR, RIAU BERDASARKAN PARAMETER GEOKIMIA INDEKS METILPHENANTREN (MPI)
    (2018-03-07) Kasiani, Syahri; Tamboesai, Emrizal Mahidin
    One of the causes of the petroleum energy crisis is the large number of old wells that are no longer producing and unoptimal of new wells that being explored because they haven’t in qualification as mature and feasible oil. The purpose of this research is to determine the maturity of oil samples of Bangko Block based on petroleum geochemical parameters ie Metilphenantren index (MPI). Crude oil samples from Bangko wells were fractionated by column chromatography resulting in hydrocarbon saturated then analyzed by gas chromatography (GC), whereas aromatic fraction was determined using GC-MS. The results of this study indicate that Bangko Block crude oil has a pretest ratio of 2.41, this indicates that the well of Bangko Block production settles in the lacustrine deposition environment under oxidation conditions. The value of methylpenantren parameter for MPI 1 was 0.812, MPI 2 was 0.917 and MPI 3 was 0.789, and the value of VRE was 0.887%, it shows that Bangko Block oil has reached maturity
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    KORELASI MINYAK BUMI BLOK BANGKO–ROKAN HILIR DENGAN MINYAK BUMI DURI-BENGKALIS, RIAU MENGGUNAKAN PARAMETER GEOKIMIA MOLEKULER
    (2016-10-19) Ilya, Fitri; Tamboesai, Emrizal Mahidin; Mukhtar, Akmal
    Crude oil is the main energy resources for industry, transportation and house hold needs. The demand for crude oil in Indonesia is much higher than its production which leads to current energy crisis. One of solutions for this crisis is to conduct correlation study, which determines the genetic relationship at each oil well. The correlation study of crude oil between in Bangko Rokan Hilir with Duri Bengkalis has not been conducted previously. This study could assist to provide the indication of the genetic relationship, deposition zone, souce rock and the origins of Bangko and Duri’s crude oil. The crude oil samples taken immediately from oil wells was first refrigerated before conducting geochemistry analysis. The samples were then fractionated by column to separate saturated fraction. This fraction was analyzed using Gas Chromatography (GC). On the basis of the abudance of hydrocarbon aliphatic, the crude oils samples have small ratio value, which is 0,38-0,50 for Pr/n-C17 and 0,16-0,18 Ph/n-C18. This values indicated that the samples were originated from higher vascular plants (terrestrial). The samples derived from lacustrine environments (lake) have ratio value of Pr/Ph (2,50-2,90). The calculation from Star diagram have showed that the samples of production oil field in Bangko (MB-07, MB-026 and MB-172) are positively correlated, but the samples of production oil field in Bangko MB-07 with MB-026 is closer correlation than the MB-172, whereas the oil samples in area MB-07, MB-026 dan MB-172 of Bangko with the oil sample in Duri (MD-01) are negatively correlated. The positive correlation indicated that the samples have the genetic relationship at each oil, a same source matter.
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    PEMANFAATAN LIMBAH PADAT PULP GREEN LIQUOR DREGS DAN SLAKER GRITS DARI PABRIK KERTAS PT.INDAH KIAT UNTUK PEMBUATAN BATAKO
    (perpustakaan UR, 2021-07) Rizki, Herdinal; Tamboesai, Emrizal Mahidin
    Industrial waste is a by-product of industrial processes from waste material or building material. The study aimed to analyze the used of solid waste pulp dreg and grits through chemical characterization to make bricks. Chararacterization of material used Scanning Electron Microscope (SEM), X-Ray Fluoresence (XRF) and IR Prestige-21 instruments aimed to analyze the chemical content of the waste. Test of compressive strength using Universal Testing Machine (UTM) aimed to analyze the strength of material when given a load with certain pressure. The result showed that the best which for bricks that lower water absorption and bricks that have large compressive strength value.
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    PENGARUH PENAMBAHAN ABU LAYANG (SiO2) DAN FOAMING AGENT (CH3(CH2)16COO-Na+) DALAM BATU BATA RINGAN
    (Elfitra, 2023-02) Cahyaningtyas, Praptiwi; Tamboesai, Emrizal Mahidin
    Fly Ash (Fly Ash) comes from the combustion of a boiler called Palm Oil Fuel Ash (POFA) which is pozzolanic which contains high silica (SiO2) and aluminum (Al2O3) and the main content is sand containing hydroxide. The method used in this research is mixing. This research was conducted with a ratio of 1 cement: 1 Foaming Agent: 1 sand and the addition of Fly Ash with a percentage (0%; 5%; 10% and 15%) to the reduction of the amount of sand which aims to characterize the addition of fly ash. Fly ash with Fourier Transform-Infra Spectroscopy (FTIR) and X-Ray Fluorescence (XRF) instruments, lightweight concrete products using X-Ray Fluorescence (XRF) and Scanning Electron Microscopy (SEM) instruments and analyzed the effect of adding solid waste based on the ratio optimal for the manufacture of lightweight brick concrete according to SNI 03-0349-1989. The results obtained based on the chemical composition test on fly ash solid waste and lightweight brick concrete products are that there are compounds that make up building construction, such as SiO2 and Al2O3 as fillers, CaO as adhesives and Fe2O3 as hardeners. The results of the functional group analysis showed that it was at a wave number of 873.79 cm-1 which was indicated by the presence of the Bending Si-O-Si functional group. Morphological analysis of lightweight brick products found that lightweight bricks have grain size, pore diameters are smaller and denser so that the lighter brick products formed are better and stronger. The effect of the addition of Fly Ash, based on the ratio of the addition of Fly Ash which is optimal for the manufacture of lightweight bricks is the addition of the percentage of BR 1 5% sample, namely the water absorption of lightweight bricks is 32.96% with SNI 03-0349-1989 absorption lightweight brick concrete maximum 25%, the volume weight obtained is 1294 kg/m2 with SNI 03-0349-1989 at least 800-1400 kg/m2 and the compressive strength of lightweight brick concrete obtained is 17.5 MPa with SNI 03-3449- 2002 the compressive strength of lightweight brick concrete is at least 6.89 Mpa.
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    PENGARUH WAKTU ANALISIS TERHADAP NILAI INDEKS SCALE DAN EVALUASI KECENDERUNGAN TERBENTUKNYA SCALE PADA PIPA PRODUKSI DI LAPANGAN MINYAK DURI RIAU
    (2014-01-23) Tamboesai, Emrizal Mahidin
    Dun oil field is an important income source for the Indonesian government. In the oil industry, built up of scale and corrosion of the production equipment can hamper distribution of crude oil. This research aim at studying the factors that effect the formation of scale, specially due to acid levels in relation to alkalinity. Analysis was done using the Stiff Davis method using water media, to predict the probability level of scale formation. Samples were obtained from 4 different production wells, namely well A, B, C and D. Water from the production wells were separated from the oil and dirt using flocculants. Water content was analyzed 1, 4, 21, and 28 hours after sampling. Research results showed that there was no significant difference for the scale index value at these different times for production well A, with values between 0.67 to 0.69, and a difference of 0.02. For well B the values obtained were between 1.32 to 1.35, with a difference of 0.03. For oil well C and D the values were 0.80-0.82 and 1.23-1.22 with difference of 0.02 and 0.01 respectively.
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    PENGGUNAAN LIMBAH PADAT PULP GREEN LIQUOR DREGS DAN SLAKER GRITS DARI PT INDAH KIAT PULP DAN PAPER UNTUK APLIKASI PRODUKSI GENTENG BETON
    (Elfitra, 2021-12) Simbolon, Diah Anggini; Tamboesai, Emrizal Mahidin
    This study aims to utilize solid waste pulp green liquor dregs and slaker grits by analyzing the effect of adding solid waste green liquor dregs and slaker grits on water absorption and tile compressive strength, analyzing the chemical content of solid waste green liquor pulp dregs and slaker grits and concrete tile products and chemical morphology of the samples. The method that has been used in this research is pressing. The results of the water absorption test for concrete roof tiles with the addition of 0%, 5%, 10%, and 15% solid waste green liquor pulp and slaker grits were 8.4%, 6.4%, 7.5% and 9.4%. Testing the compressive strength of concrete tiles with the addition of 0%, 5%, 10%, and 15% solid waste green liquor pulp and slaker grits was 19.0 MPa, 19.7 MPa, 18.6 MPa, 18.3 MPa. The chemical content of solid waste pulp before and after the finished concrete tile product is in accordance with the building blocks of the tile which consists of compounds Al2O3, SiO2, Fe2O3 and CaO. From the above test, it can be concluded that the addition of solid waste pulp can produce quality concrete roof tiles with reference to the value of SNI 0096-2007, that the maximum water absorption value of tile is 10% and the compressive strength of roof tiles is at least 6.0 MPa.
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    PENGGUNAAN ZEOLIT Y SINTESIS SEBAGAI PENYARING MINYAK BUMI ASAL DlURI —RIAU
    (2014-01-23) Tamboesai, Emrizal Mahidin
    Penelitian tentang penggunaan Zeolit Y sintesis sebagai penyaring minyak bumi untuk rnemperoleh base oil telah dilakukan. Base oil merupakan bahan dasar pembuatan pelumas. Base oil hanya diperoleh dari minyak bumi yang mengandung n-parafin saja. Normal parafin yang terdiri atas atom hidrokarbon C1-C34 akan dilewatkan melalui molecular sieve jenis zeolit Y sintesis. Zeolit yang telah terdehidratasi (diaktivasi) akan memiliki pori-pori yang dapat menyaring molekul-molekul yang memiliki ukuran sama dengan ukuran pori-pori zeolit. Basil penelitian diperoleh eluen hasil penyaringan dengan zeolit Y sintesis mampu memisahkan atom karbon n-parafin <34. Implikasi pada penelitian ini adalah bahwa eluen yang dihasilkan (nparafin <34) merupakan base oil untuk jenis pelumas berat
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    PERBANDINGAN GEOICIMIA MOLEKULAR MINYAK BUMI SUMUR PRODUICSI DURI, LANGGAK DAN MINAS, RIAU
    (2014-01-23) Tamboesai, Emrizal Mahidin
    Cekungan Sumatera Tengah merupakan salah satu penghasil minyak bumi terbesar di Indonesia khususnya di daerah Minas, Duri, dan Langgak Riau. Beberapa tahun belakangan ini, produksi minyak bumi di daerah tersebut mengalami penurunan. Karena banyak di dapat sumur-sumur yang tidak aktif lagi ( sumur tua) tetapi masih mengandung minyak mentah sebanyak 30% hingga 60% dari kandungan aslinya ( Purwono, 2008). Untuk mempertahankan produksi maka perlu dalakukan kegiatan eksplorasi minyak bumi dengan menggunakan kajian goekimia molekular yang dapat mengurangi resiko kegagalan ekploitasi minyak bumi. Geokimia molekuler merupakan parameter penting dalam studi korelasi antar sumur produksi dari Cekungan Sumatera Tengah. Studi ini dimaksudkan untuk mengetahui hubungan genetika minyak bumi antar sumur produksi dari lapangan Minas, Duri, dan Langgak. Diagram bintang merupakan metode yang digunakan untuk menunjukkan adanya persamaan dan perbedaan genetik dari sampel teranalisis. Dan hasil analisis, sampel minyak lapangan Duri berkorelasi positif dengan sampel minyak lapangan Langgak. Sampel minyak bumi Duri dan Langgak berkorelasi negatif dengan sampel minyak lapangan Minas. Dengan mengetahui adanya korelasi minyak bumi, dapat membantu dalam tindakan pengurasan minyak (Enhanced Oil Recovery) dengan cara yang sesuai.
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    PERBANDINGAN METODE SULFAT (KRAFT) DAN ORGANOSOLV DALAM PEMBUATAN PULP BERBAHAN BAKU DAUN NANAS (Ananas Comusus Meer)
    (2018-03-07) Nurhidayani, Nurhidayani; Tamboesai, Emrizal Mahidin
    Pineapple leave contained high concentration of cellulose, so it can be used as an alternative raw material for making pulp. This study aims to compare pineapple leave pulp by using sulfate method (kraft) and organosolv method. The sulfate (kraft) method used sodium hydroxide (NaOH) and sodium sulphide (Na2S) as cooking solutions, while the organosolv method used acetone (C3H6O) as cooking solution. The process of delignification used several treatments, that were variation concentrations of solution variation cooking time. Physical properties of pulp were determined by calculating grammature and tensile index. The result of the research with sulfate (kraft) method obtained the highest pulp yield 45,94% with the highest cellulose 65,8%, and lowest lignin was 5,19%, at cooking time of 90 minutes and 3% NaOH concentration. While for the organosolv method obtained the highest yield pulp was 57,91% at 120 minute and concentration C3H6O 3%. The highest cellulose content of the research was 57,1% and the lowest lignin content was 16,10% at 60 minutes, of 1% C3H6O concentration. Grammature value ranges of pulp from 53 to 68 g/m2 and tensile index that was 30,0 to 31,1 Ng/m2 for sulfate (kraft) method, whereas for the organosolv method the value to grammature and tensile index 0 Ng/m2. The results showed that pineapple leaves pulp was better with sulfate (kraft) method than organosolv method