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2024 International Petroleum Technology Conference, IPTC 2024

作者： Lanin, E.S. Sone, H. Sapiie, B. Musu, J.T. Widarsono, B. Hatta, M. Nugraha, A. Gunawan, B.K. Nugroho, D.A. Geological Engineering Study Program University of Wisconsin MadisonWI United States Geological Engineering Study Program Bandung Institute of Technology Indonesia Testing Center for Oil and Gas Research and Development Center for Oil and Gas Technology BBPMGB - LEMIGAS Jakarta Indonesia National Research and Innovation Agency BRIN Jakarta Indonesia Pertamina Hulu Energi Regional 1 Jakarta Indonesia Special Task Force for Upstream Oil and Gas Business Activities SKK MIGAS Jakarta Indonesia Directorate General of Oil and Gas Ditjen Migas - Ministry of Energy and Mineral Resources Jakarta Indonesia

ISBN: (纸本)9781959025184

Indonesia is actively studying its shale resources' potential to be developed. In contrast to other countries that have succeeded in developing their shale resources, Indonesian shale potentials are generally located at an active tectonic margin and are of younger ages (Cenozoic Era). This condition raises questions about the sustainability of its mechanical properties and development technique. Following our previous research, this paper presents the results of rock mechanical tests on shale from North Sumatra and South Sumatra Basins. The shale samples were prepared and tested by a rigorous multi-stage triaxial procedure. Eight (8) plugs representing the Baong and Belumai Formations of the North Sumatra Basin and eight (8) plugs representing the Talangakar and Gumai Formations of the South Sumatra Basin were prepared in vertical (V), horizontal (H), and 45° inclined (I) orientation relative to bedding. The test stages can be broadly categorized as the hydrostatic stage, triaxial stage, failure stage, and sliding-re-sliding stage. All the tests were conducted at a maximum confining pressure of 30 MPa to compare the results with results of our previous study and results from U.S. Shales. The tested shale plugs possess higher porosity than U.S. Shales for a given clay + organic matter (OM) content. Regarding rock strength, the analyzed plugs show a correlation with clay + OM content and inter-granular porosity. For the elastic properties, Young's modulus shows a decrease with clay+ OM contents, unlike the Poisson Ratio, which does not offer a clear trend. Meanwhile, creep compliance clearly shows the inverse trend of Young's modulus. The anisotropy of elastic properties is demonstrated by sample orientation, where the horizontal sample is the stiffest, the vertical sample is the softest, and the inclined sample is in between. Generally, the mechanical properties of the plug samples from Baong, Belumai, Talangakar, and Gumai Formations coming from two tertiary basins

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Enhanced Dye Adsorption and Bacterial Removal of Magnetic Nanoparticle-Functionalized Bacterial Cellulose Acetate Membranes

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Journal of Renewable Materials 2024年第9期12卷 1605-1624页

作者： Heru Suryanto Daimon Syukri Fredy Kurniawan Uun Yanuhar Joseph Selvi Binoj Sahrul Efendi Fajar Nusantara Jibril Maulana Nico Rahman Caesar Komarudin Komarudin Centre of Advanced Material for Renewable Energy(CAMRY) Universitas Negeri MalangMalang65145Indonesia Department of Mechanical and Industrial Engineering Universitas Negeri MalangMalang65145Indonesia Department of Food and Agricultural Product Technology Faculty of Agricultural TechnologyAndalas UniversityPadang25163Indonesia Department of Chemistry Institut Teknologi Sepuluh NopemberSurabaya60111Indonesia Study Program of Aquatic Resources Management Faculty of Fisheries and Marine ScienceBrawijaya UniversityMalang65145Indonesia Institute of Mechanical Engineering Saveetha School of EngineeringSaveetha Institute of Medical and Technical Sciences(SIMATS)Saveetha UniversityChennai602105India Faculty of Vocational Universitas Negeri MalangMalang65145Indonesia

Utilizing biomass waste as a potential resource for cellulose production holds promise in mitigating environmental *** current study aims to utilize pineapple biowaste extract in producing bacterial cellulose acetate-based membranes with magnetic nanoparticles(Fe_(3)O_(4)nanoparticles)through the fermentation and esterification process and explore its *** bacterial cellulose fibrillation used a high-pressure homogenization procedure,and membranes were developed incorporating 0.25,0.50,0.75,and 1.0 wt.%of Fe3O4 nanoparticles as magnetic nanoparticle for *** membrane characteristics were measured in terms of Scanning Electron Microscope,X-ray diffraction,Fourier Transform Infrared,Vibrating Sample Magnetometer,antibacterial activity,bacterial adhesion and dye adsorption *** results indicated that the surface morphology of membrane changes where the bacterial cellulose acetate surface looks *** crystallinity index of membrane increased from 54.34%to 68.33%,and the functional groups analysis revealed that multiple peak shifts indicated alterations in membrane functional ***,adding Fe_(3)O_(4)-NPs into membrane exhibits paramagnetic behavior,increases tensile strength to 73%,enhances activity against *** and ***,and is successful in removing bacteria from wastewater of the river to 67.4%and increases adsorption for anionic dyes like Congo Red and Acid Orange.

关键词： Bacterial cellulose dye adsorption Fe_(3)O_(4)nanoparticles membrane pineapple waste

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Bioremediation of Aged Petroleum Oil Contaminated Soil: From Laboratory Scale to Full Scale Application

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Procedia Chemistry 2015年 14卷 326-333页

作者： Qomarudin Helmy Rudy Laksmono Edwan Kardena Environmental Engineering Dept Faculty of Civil and Environmental Engineering Institut Teknologi Bandung Ganesha No. 10 BandungWest Java 40132 Indonesia Energy Security Study Program Indonesia Defence University Salemba Raya No. 14 Jakarta 10430 Indonesia

Large quantity of aged petroleum oil contamination such as dehydrated oil sludge, generated in the disposal process of oil-containing sewage in Indonesia. This study aims to investigate the OSCS removal by mean of bioremediation technique. Results found that petrofilic consortia and biosurfactants addition increased the removal efficiency up to 46% and 85%, respectively. At full scale application, this technique succeed in removing of 46 g TPH per kg soil from 4 883 m 3 of OSCS during 16 mo of treatment. These results suggest that petrofilic consortia and biosurfactants addition stimulate the biodegradation and overcome the limitation of OSCS degradation process.

关键词： Biodegradation bioremediation biosurfactant oil sludge petrofilic petroleum.

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Geochemical Approach to Reveal the Genetic Occurrence of Gibbsite, Relative to the Parent Rock Type in Lateritic Bauxites 1

Geochemical Approach to Reveal the Genetic Occurrence of Gib...

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1st Workshop on Environmental Science, Society, and Technology, WESTECH 2018

作者： Nugraheni, R.D. Sunjaya, D. Geological Engineering Study Program Faculty of Earth Technology and Energy Universitas Trisakti Jl. Kyai Tapa No.1 Grogol Jakarta Barat Indonesia PT Aneka Tambang Tbk. Unit Geomin Jl. Letjen T.B. Simatupang No.1 Jakarta Selatan Indonesia

Situating in a tropical climate, will be favourable for Indonesia and Malaysia to have an intensive weathering and a concentration of lateritic bauxite. The study area takes place in Kuantan, Pahang State, Malaysia and Landak area, West Kalimantan, Indonesia. The study area has different type of parent rock, topography and drainage condition, which will also cause the different characteristics of alumina minerals in bauxite. One of the common form of alumina minerals is known as Gibbsite [Al(OH)3]. The objective of this research is to investigate the genesis of gibbsite from two different parent rocks. Samples were taken and collected from pitting, analyzed for Al2O3, Fe2O3, SiO2 and TiO2 using XRF and XRD examination. The parent rock of bauxite in Kuantan is basalt, meanwhile, in Landak, ranges from granodiorite to andesite. Petrography and XRD analyses of Kuantan bauxite shows predominant gibbsite, with minor amount of geothite, hematite, kaolinite, illite, quartz and feldspar, while in Landak, mineralogically consists of variant amount of gibbsite, goethite, hematite, kaolinite, illite and quartz. In Kuantan, the amount of Al2O3 varies from 23.6% - 51.01%, nearly similar than that in Landak that varies from 31.35% - 55.03%. Gibbsite in Kuantan is assumed as a transformation of Ca-rich plagioclase and Ferromagnesian- silicate minerals, on the other hand, gibbsite in Landak was produced from direct weathering of primary Al- silicate minerals (Na- plagioclase and K-feldspar). From study, it can be inferred that gibbsite formed from a layer of silicates and will concentrated in finer clay as a weathering product. Moreover, the different types of parent rock will produce different types and amount of alumina minerals. The study will be beneficial to predict the existence of potential alumina minerals in lateritic bauxite. © Published under licence by IOP Publishing Ltd.

关键词： Weathering

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Application of STATCOM to improve the high-voltage-ride-through capability of wind turbine generator

Application of STATCOM to improve the high-voltage-ride-thro...

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IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia)

作者： Y. M. Alharbi A. M. Shiddiq Yunus A. Abu-Siada King Abdullah scholarship program Australia Department of Mechanical Engineering Energy Conversion Study State Polytechnic of Ujungpandang Makassar Indonesia Department of Electrical and Computer Engineering Curtin University of Technology Perth WA Australia

Variable speed wind turbine with full scale converter or so-called type-D wind turbine generator worldwide installation has been significantly increased in the last few years. Voltage Swell in the grid side may cause the wind turbine to be disconnected from the grid. In this paper, STATCOM is applied to improve the high voltage ride through capability of type-D wind turbine during voltage swell in the grid side. Simulation is carried out using MATLAB/Simulink software. Results show that STATCOM can significantly improve the high voltage ride through (HVRT) capability of type-D wind turbine and prevents it from being disconnected from the grid during certain level of voltage swell in the grid side.

关键词： Automatic voltage control Wind turbines Educational institutions Reactive power Control systems Power system stability Wind energy

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Selectivity of CO_(2)reduction reaction to CO on the graphitic edge active sites of Fe-single-atom and dual-atom catalysts:A combined DFT and microkinetic modeling

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Carbon Resources Conversion 2024年第1期7卷 21-31页

作者： Ahmad Nuruddin Adhitya Gandaryus Saputro Arifin Luthfi Maulana Febdian Rusydi Fiki Taufik Akbar Hadi Teguh Yudistira Hermawan Kresno Dipojono Advanced Functional Materials Research Group Faculty of Industrial TechnologyInstitut Teknologi BandungJl.Ganesha No.10Bandung 40132Indonesia Research Center for Nanosciences and Nanotechnology Institut Teknologi BandungJl.Ganesha No.10Bandung 40132Indonesia Research Center for Quantum Engineering Design Department of PhysicsFaculty of Science and TechnologyUniversitas AirlanggaSurabaya 60115Indonesia Theoretical High Energy Physics Research Division Faculty of Mathematics and Natural SciencesInstitut Teknologi BandungJl.Ganesha No.10Bandung 40132Indonesia Mechanical Engineering Study Program Institut Teknologi Sumatera(ITERA)South LampungLampungIndonesia Department of Materials Science and Engineering University of CaliforniaBerkeleyBerkeleyCA 94720United States

We study the carbon dioxide reduction reaction(CO_(2)RR)activity and selectivity of Fe single-atom catalyst(Fe-SAC)and Fe dual-atom catalyst(Fe-DAC)active sites at the interior of graphene and the edges of graphitic nanopore by using a combination of DFT calculations and microkinetic *** trend of limiting potentials for CO_(2)RR to produce CO can be described by using either the adsorption energy of COOH,CO,or their ***_(2)RR process with reasonable reaction rates can be achieved only on the active site configurations with weak tendencies toward CO *** efficiency of CO_(2)RR on a catalyst depends on its ability to suppress the parasitic hydrogen evolution reaction(HER),which is directly related to the behavior of H adsorption on the catalyst’s active *** find that the edges of the graphitic nanopore can act as potential adsorption sites for an H atom,and in some cases,the edge site can bind the H atom much stronger than the main Fe *** linear scaling between CO and H adsorptions is broken if this condition is *** condition also allows some edge active site configurations to have their CO_(2)RR limiting potential lower than the HER process favoring CO production over H2 production.

关键词： CO_(2)RR FexNy active site Fe-SAC Fe-DAC Graphitic edges DFT Microkinetic

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Regional tectonic and geochemical approach to distinguish bauxite characteristics in Pahang, Malaysia and West Kalimantan, Indonesia

Regional tectonic and geochemical approach to distinguish ba...

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International Conference on Earth Science, Mineral, and energy 2018, ICEMINE 2018

作者： Nugraheni, R.D. Sunjaya, D. Agustini, S. Geological Engineering Study Program Faculty of Earth Technology and Energy Universitas Trisakti Jl. Kyai Tapa no.1 Grogol Jakarta Barat Indonesia PT Aneka Tambang Tbk Unit Geomin Jl. Letjen T.B. Simatupang no.1 Lingkar Selatan Tanjung Barat Jakarta Selatan Indonesia

Indonesia and Malaysia are neighboring countries that situated in a tropical area and suitable for weathering, particularly favorable for lateritic deposit. One of laterite deposit is bauxite, where bauxite was formed as a chemical weathering product of metaluminous to peraluminous igneous rocks. The study area is located in the Kuantan area, Pahang State, Malaysia and West Kalimantan Province, Indonesia, which has contrasting tectonic origin and serve a different parent rock of bauxite. This study aims to distinguish the geochemical characteristics of bauxite in West Kalimantan against bauxite in Pahang Province. Method used in this study consists of pitting examination, where samples were collected from surface to maximum 10 m intervals and vertically logged. Samples were analyzed petrographically, XRD and XRF in order to observe the mineralogical composition and chemical compound. Result shows that magmatism in Pahang is dominated by basalt with oxide concentration of Al2O3, Fe2O3, SiO2 and TiO2 respectively ranges from 43.96 - 51.01%, 16.59 - 18.97%, 2.17 - 9.01% and 2.83 - 2.91%. In Indonesia, the parent rock of andesite and diorite (Al2O3 = 48.11 - 53.49%;Fe2O3 = 6.15 - 17.25%) shows higher amount of Al2O3 than that in granodiorit (Al2O3 = 30.10 - 48.68%). It can be inferred that andesite and diorite as bauxite's parent rock found in Kalimantan Barat generates abundant gibbsite and higher proportion of Al2O3 with lesser goethite and hematite (Fe2O3) relative to basalt as bauxite's parent rock in Pahang. © Published under licence by IOP Publishing Ltd.

关键词： Basalt

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Ramp rate constrained economic dispatch by micro genetic algorithm based on migration and merit order loading solutions

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International Journal of Power and energy Systems 2006年第2期26卷 114-123页

作者： Tippayachai, J. Ongsakul, W. Electrical Engineering Program Sirindhorn International Institute of Technology Thammasat University Pathumthani 12121 Thailand Energy Field of Study School of Environment Resources and Development Asian Institute of Technology Pathumthani 12120 Thailand Thailand

This paper proposes a micro genetic algorithm based on migration and merit order loading solutions (MGAM-MOL) for solving the ramp rate constrained economic dispatch problems for combined cycle units with linear decreasing and staircase incremental cost functions. MGAM-MOL uses a merit order loading (MOL) solution as a base solution in order to reduce the micro genetic algorithm (MGA) search effort towards the optimal solution region. As transmission losses are included, the MGAM-MOL solutions are near the optimal solutions and are less expensive than those obtained from MGA, simple genetic algorithm, and MOLs especially for large combined cycle unit systems, thereby leading to substantial generator fuel cost savings. Micro genetic algorithm, economic dispatch, merit order loading, simple genetic algorithm.

关键词： Combined cycle power plants

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The effect of organic acid hydrolysis on the properties of nanocellulose from edamame husk (Glycine max (L.) merill)

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Case Studies in Chemical and Environmental engineering 2025年 11卷

作者： Wahyudi, Muhammad Sapto Holilah Bahruji, Hasliza Prasetyoko, Didik Asranudin Pratama, Agus Wedi Indriani, Dina Wahyu Suryanegara, Lisman Faradilla, RH Fitri Mahardika, Melbi Wardani, Ratih Kusuma Piluharto, Bambang Knight, Victor Feizal Norrrahim, Mohd Nor Faiz Research Center for Biomass and Bioproducts National Research and Innovation Agency of Indonesia (BRIN) Cibinong Indonesia Research Collaboration Center for Nanocellulose BRIN-Andalas University Padang Indonesia Study Program of Chemistry Faculty of Science and Technology UIN Sunan Kalijaga Yogyakarta Indonesia Centre of Advanced Material and Energy Sciences Universiti Brunei Darussalam Jl. Tungku Link BE 1410 Brunei Darussalam Department of Chemistry Faculty of Science and Data Analytics Institut Teknologi Sepuluh Nopember Surabaya Indonesia Research Center for Applied Microbiology National Research and Innovation Agency (BRIN) Cibinong Indonesia Department of Biosystem Engineering Faculty of Agricultural Technology Universitas Brawijaya Jalan Veteran Malang Indonesia Department of Food Science and Technology Faculty of Agriculture Universitas Halu Oleo Kendari Indonesia Academy Pharmacy of Surabaya Ketintang Gayungan Surabaya 60231 Indonesia Department of Chemistry Faculty of Mathematics and Natural Sciences University of Jember Jember Indonesia Research Center for Chemical Defence Defence Research Institute Universiti Pertahanan Nasional Malaysia Kem Sungai Besi Kuala Lumpur 57000 Malaysia

The increasing demand for sustainable materials has highlighted nanocellulose as a promising candidate due to its exceptional mechanical strength, thermal stability, and superior barrier properties. These attributes enable its application in diverse fields, including packaging, biomedical devices, and nanocomposites. This study investigates the valorization of edamame bean husks, a byproduct of the globally consumed legume snack, as a sustainable feedstock for nanocellulose production. Cellulose was extracted from the husks via delignification and bleaching, followed by a green and facile acid hydrolysis method employing organic acids (maleic acid, lactic acid, citric acid, and formic acid) to produce nanocellulose. The resulting nanocellulose exhibited a fibrillar morphology with particle sizes ranging from 7.59 to 17.51 nm, depending on the acid used. X-ray diffraction analysis revealed a crystallinity index ranging from 63.49 % to 67.24 %. Notably, acid hydrolysis significantly enhanced the thermal stability of the nanocellulose compared to both the raw husk and isolated cellulose. These findings demonstrate the potential of edamame agricultural waste as a valuable resource for sustainable and eco-friendly nanocellulose production, contributing to a circular bioeconomy. © 2025 The Authors

关键词： Characterization Edamame husk waste Green synthesis Nanocellulose Organic acids

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Numerical study on Ammonia Injection Location of Ammonia and Low-Rank Coal Co-Firing in 1000 Mwe Ultra Super Critical Carolina-Type Boiler

SSRN

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SSRN 2023年

作者： Ahmad, Azaria Haykal Darmanto, Prihadi Setyo Juangsa, Firman Bagja Mechanical Engineering Study Program Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Jl Ganesha 10 Bandung40132 Indonesia Energy Conversion Research Group Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Jl Ganesha 10 Bandung40132 Indonesia

Coal-fired power plants are major contributors to global CO2 emissions, prompting the need for strategies to mitigate their environmental impact. Ammonia co-firing has emerged as a promising solution for reducing CO2 emissions. This study employs computational fluid dynamics (CFD) simulations to optimize ammonia injection in a 1000 MW Ultra Super Critical Coal Fired Power Plant. Initially, four injection locations (equally divided, top burner, bottom burner, mid burner) were simulated at a 20% thermal energy co-firing ratio. The bottom burner injection showed the lowest NOx emissions. Building on these findings, the focus shifted to varying injection locations, particularly the bottom burner. Increased co-firing ratios led to reduced gross power and derating due to altered heat absorption and water content from ammonia combustion. Flue gas properties and composition were affected. NOx emissions showed a complex trend with initial reductions up to 20% due to ammonia's effect, but exceeding 20% co-firing led to dramatic NOx increases, surpassing limits at 60% co-firing. Burnout ratio linearly increased due to low unburned ammonia. However, coal burnout exhibited a different pattern, initially increasing, then declining after 40% co-firing. This was attributed to the char-NO reaction counteracting decreased coal volatilization caused by high ammonia levels. © 2023, The Authors. All rights reserved.

关键词： Coal

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