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Identified solution management in the landfill with analytic network process

IOP Conference Series: Earth and Environmental Science 2019年第1期399卷

作者： B Ratnawati M Yani Suprihatin H Hardjomijojo Graduate School of IPB University (Bogor Agriculture University) The Study Program of Natural Resources & Environmental Management Campus IPB Barangsiang Bogor 16144 Indonesia IPB University Vocational of Science IPB University (Bogor Agriculture University) The Study Program of Environmental Engineering and Management JL Kumbang No.14 Bogor Faculty of Agricultural Technology of IPB University Department of Agroindustrial Technics Campus IPB Dramaga Bogor

The solution to solve these challenges is the waste management. The waste management is needed to solve starting from upstream to downstream. The waste management in downstream is in the landfill. The management Landfill not only manages solid waste but also waste water treatment. One form of waste water treatments in a landfill is the leachate treatment. The leachate treatment is a priority for management in landfill because it can reduce water, soil, air pollution in the landfill and the surrounding environment. In order to determine the best option among several alternatives to manage the leachate treatment, this research used Analytic Network Process (ANP) with three levels (actors, criteria, and alternatives). Secondary and primary data collection was carried out from April until June 2019 in Indonesia. Data were collected through a survey using questionnaire instrument. Participants of questionnaire amount of 20 people. The participants from lecturers, government, and society. The finding of this research showed that the leachate treatment using coagulation-flocculation was easier to be used in Indonesia.

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The Discrepancy between The programs and Disaster Management Policy in Klapanunggal District, Bogor, West Java

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IOP Conference Series: Earth and Environmental Science 2018年第1期135卷

作者： D A Puspito Sari I Listiyowati T Nefianto Lasmono Environmental Engineering Program Study Faculty of Engineering and Computer Sciences Universitas Bakrie Indonesia Bogor City Public Health Office Bogor Indonesia Disaster Management for National Security Program Study Faculty of Defense Management Indonesia Defense University Indonesia

Bogor regency consists of 40 districts, 23 are prone tonatural disasters. Klapanunggal district is listed in 10 districts declared as most vulnerable to natural disasters. Natural disasters could lead to loss of property and infrastructure damage and will affect the food security in the region. Food shortages is one example of the condition which causes food insecurity. The aim of this research is to analyze the government's food security strategy in anticipation of disaster with a case study of food insecurity in Klapanunggal district. The analysis suggested that; 1) FSVA is an appropriate program to identify food shortage areas, 2) Food Shortage Relief program (program Penanganan Daerah Rawan Pangan-PDRP) is the optimal efforts in reducing food shortages in the region, 3)The mismatch between FSVA indicators and Food Shortage Relief program makes Klapanunggal district difficult in achievingfree status food-shortage. Based on the analysis, it is suggested that the implementation of Food Shortages Relief program could be carried out based on the priority issues and implemented with integrated coordination and assistance among stakeholders. Such priority issues, integrated coordination and assistance are fully analyzed in this study.

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The effect of feed rate and inlet air velocity to reduce calcium oxalate on porang chips using micro mill assisted Cyclone separator

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AIP Conference Proceedings 2019年第1期2120卷

作者： Jatmiko Eko Witoyo Simon Bambang Widjanarko Bambang Dwi Argo 1Department of Agricultural Product Technology Faculty of Agricultural Technology Universitas Brawijaya Malang 65145 Indonesia 3Porang Research Center Universitas Brawijaya Malang 65145 Indonesia 2Bioprocess Technology Study Program Department of Agricultural Engineering Faculty of Agricultural Technology Universitas Brawijaya Malang 65145 Indonesia

Porang is the native plant and sources of glucomannan in Indonesia, but the utilization is limited. The presence of calcium oxalate in the porang tuber can cause to the health problem. The milling and air clarifying are the need to eliminate the impurities, i.e. calcium oxalate for producing pure porang flour. The aims of this present research were to know the effect of feed rate and inlet air velocity to reduce calcium oxalate on porang chips using micro mill assisted cyclone separator. This research divided to be 2 stages, the first stage was the determined the condition of feed rate and the inlet air velocity of the cyclone separator, and the second stage was to trial milling with the condition that obtained in the first stage. The result showed the range of feed rate of 45 – 55 kg/h and the inlet air velocity of 3 – 7 m/s. The feed rate and the inlet air velocity had a significant effect (p < 0.05) on the yield, the degree of whiteness, and calcium oxalate of porang flour. Overall, the best treatment was obtained at the feed rate of 50 kg/h and 7 m/s in the inlet air velocity of the cyclone separator.

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Characterization of Oil Shale in the Indragiri Hulu Regency, Indonesia, Based on Organic Geochemistry and Petrography

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IOP Conference Series: Earth and Environmental Science 2019年第1期360卷

作者： M Heri Hermiyanto Zajuli Eddy A Subroto Very Susanto Center of Geological Survey Ministry of Energy and Mineral Resources Jalan Diponegoro Bandung Indonesia Petrology Volcanology and Geochemistry Research Group Geological Engineering Study Program Faculty of Earth Sciences and Technology Institut Teknologi Bandung (ITB) Jalan Ganesa 10 Bandung 40132 Indonesia

Oil shale now becomes important in Indonesia as promising unconventional energy since the conventional oil is decreasing. This study may be classified as a reconnaissance in trying to evaluate oil shale in the Indragiri Hulu Regency, Indonesia that may become source rock of the future unconventional oil. A set of samples comprising thirty-four sediment outcrops have been collected. All samples were screened their richness by analysing their total organic carbon (TOC) and introduced to Rock-Eval pyrolysis apparatus to identify their maturity, type, and also richness. Out of the thirty-four samples, fourteen selected ones were analysed using gas chromatography (GC), sixteen samples for analysis gas chromatography-mass spectrometry (GC-MS), and twenty samples for organic petrography. The sediments could be classified as very good to excellent for their organic richness, in the stage of immature to relatively mature, comprising a mixture between Type I and II kerogens which show oil prone. Petrographic analysis indicates that lamosite contained in the sediments belongs to Rundle type. The Rundle type lamosite that were mainly originated from Pediastrum organisms might indicate that the sediments were deposited in a lacustrine paleoenvironment, i.e. in a specific type of balanced fill basin. It is proven that the studied formation is promising to be source rock for the shale oil that could be exploration target in the near future time.

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The Tensile Strength of Petung Bamboo Fiber Reinforced Epoxy Composites: The Effects of Alkali Treatment, Composites Manufacturing, and Water Absorption

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IOP Conference Series: Materials Science and engineering 2019年第1期547卷

作者： Gunawan Refiadi Yusi Syamsiar Hermawan Judawisastra Mechanical Engineering Vocational Education Study Program College of Teacher Training and Education (STKIP) Sebelas April Jl. Anggrek Situ 10 Sumedang 45323 Indonesia Textile Chemistry Department Polytechnic of Textile Technology Jl. Jakarta 31 Bandung 40272 Indonesia Material Engineering Department Faculty of Mechanical and Aerospace Engineering Bandung Institute of Technology (ITB) Jl. Ganesha 10 Bandung 40132 Indonesia

Natural fiber application due to its competitiveness attracted many research in green composites. However, the tensile properties of natural fiber composites might be influenced by several factors such as treatment of the fibers, manufacturing processes, and water absorption levels. In this research, we use petung bamboo fibers as natural fibers candidate for a good reinforcement in green composites. The study focused on the tensile property of bamboo fiber reinforced epoxy composites due to alkali treatment, manufacturing process, and water absorption. The composites were made with three variations: the fibers were varied without and with alkaline treatment (5% NaOH); manual lay-up method and hot press were applied as manufacturing variation; moisture content in the composites was varied in dry condition and after water absorption treatment. Tensile testing and Scanning Electron Microscope (SEM), were performed to improve tensile strength of composite and fiber-matrix interface quality. The alkali treatment has less effect to the tensile strength than of the volume fraction gain and the void content. Composite manufacturing by hot press has a significant effect to the improvement of tensile strength up to 37% compare to the hand lay-up method. Water absorption up to 8.8% had decreased the tensile strength of composites up to 29%. The alkali treatment on the bamboo fibers had effectively reduced water absorption into the composite as well as the tensile strength reduction.

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Utilization of waste as biogas substrateby dominan microbes identified

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Journal of Physics: Conference Series 2018年第1期1013卷

作者： E Nurlina S Sambasri E Hartati R Safitri A Hodijat Program Study of Electrical Faculty of Engineering UNJANI Cimahi Indonesia Program Study of Environmental Engineering Institut Teknologi Nasional Bandung Indonesia Program Study of Biology Padjadjaran University Bandung Indonesia High School of Agricultural West Java (Sekolah Tinggi Pertanian JABAR) Bandung Indonesia

Indonesia as the tropics have a source of biomass feedstock which is very large, so the waste biomass can be used optimally as an energy source in the form of biogas. This study was conducted to obtain alternative energy from domestic waste materials, given the limited availability of petroleum and natural gas sourced from fossil fuels. This methodology is an experimental method, the process conditions at room temperature 25-27 °C, pH adjusted to the growth of microbes to produce biogas, retention time 20-60 days, the bioreactor is operated with a batch system, the volume of waste in the bioreactor is made permanent, so that the production of biogas in large scale will increase the pressure inside the bioreactor. Biogas is formed accommodated then distributed to the stove. Factors that determine the formation of biogas is a microbial species capable methanogens convert acetate into biogas. From the results of microbial identification of the isolates in the bioreactor, has identified three types of bacteria methanogens namely Methanospirillum hungatei, Methanobacterium polustre and Methanolacinapoynteri. The results of this study, domestic waste can be utilized as a substrate in biogas production, with the highest methane composition reaches 50.79%. This result is expected to increase public knowledge to utilize the waste into biogas as a renewable energy to sufficient the energy needs of household, so it does not depend on the energy derived from fossil fuels.

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Optimization of Frequency and Stirring Rate for Synthesis of Magnetite (Fe 3 O 4 ) Nanoparticles by Using Coprecipitation- Ultrasonic Irradiation Methods

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Procedia engineering 2017年 170卷 55-59页

作者： Retno Rahmawati Mohammad Gilang Permana Bill Harison Nugraha Brian Yuliarto Suyatman Deddy Kurniadi Engineering Physics Department Faculty of Industrial Technology ITB Bandung 40132 Indonesia Physics Study Program Faculty of Sains and Technology UIN SunanKalijaga Yogyakarta 55281 Indonesia

Magnetite (Fe 3 O 4 ) nanoparticles from iron sand as starting materials have been successfully synthesized by using coprecipitation- ultrasonicirradiation methods. This paper reports the preparation and optimization result of ultrasonic frequency and stirring rate during the synthesis process. The frequencies of ultrasonic conducted in this research are 300, 400 and 400 kHz. The stirring rates performed in the synthesis process are varied from 500 to 900 rpm. The qualitative analysis by using X-Ray Diffractometer (XRD) showed that the structure of Fe 3 O 4 nanoparticles have a same phase with ICCD No. 75-0449. Moreover, the quantitative analysis by using Debye-Scherer equation showed that the crystallite size of Fe 3 O 4 ranging from 21 to 25 nm depend on the ultrasonic frequency and stirring rate. Meanwhile, the transmission electron microscopy (TEM) result revealed that the Fe 3 O 4 tend to form spherical shape with little agglomeration on the morphology of the Fe 3 O 4 . The magnetic properties of Fe 3 O 4 were investigated by using vibrating sample magnetometer (VSM). The VSM measurement result showed that the Fe 3 O 4 have saturation magnetization (Ms), remanent magnetization (Mr) and coercivity field (Hc) at 25 emu/gram, 6,0562 emu/gram, and 0,0108 T, respectively. Based on the magnetic characterization, the Fe 3 O 4 nanoparticles have a potential to be appliedin biomedical field.

关键词： coprecipitation-irradiation ultrasonic Fe 3 O 4 iron sand optimization

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Integrated management system to achieve sustainable construction - A conceptual framework

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AIP Conference Proceedings 2018年第1期1977卷

作者： Ringgy Masuin Yusuf Latief T. Yuri Zagloel Leni Sagita 1Doctoral Program of Civil Department Faculty of Engineering University of Indonesia Indonesia 2Professor of Civil Department Faculty of Engineering University of Indonesia Indonesia 3Professor of Industrial Engineering Department Faculty of Engineering University of Indonesia Indonesia 4Lecturer of Industrial Engineering Department Faculty of Engineering University of Indonesia Indonesia

Construction project inevitably consumes resources and generates large amounts of waste, hence the efforts to achieve sustainable construction are required. The integration of multiple management systems, information flow analysis, and optimization of operational processes will reinforce sustainable knowledge (science of sustainability). The absence of the management of consumption of resources and construction waste can be a serious problem for the environment, on the contrary management can generate profits. One of the keys to success in realizing sustainable construction is through the integrated management systems. Integrated management system potentially reduces the construction waste due to construction failure. Previous studies have discussed the suitable management model for sustainable development. Most of these studies are interpreted in the form of regression equations and multivariate form. However, only few discuss about the implementation of integrated management system in achieving sustainable construction. Therefore, this research used structural equation method to reveal the most suitable integrated management system related to sustainable construction.

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Spatial analysis of field vulnerability concerning landslide in Southern Semarang Environment

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IOP Conference Series. Earth and Environmental Science 2019年第1期243卷 012012-012012页

作者： Tjahjono, H Suripin Kismartini Student of Doctorate Program on Environmental Science School of Postgraduates Studies Universitas Diponegoro Semarang 50275 Indonesia Promotor Civil Enginering Department Faculty of Engineering Universitas Diponegoro Semarang 50275 Indonesia Co-Promotor Administration Public Department Faculty of Social and Politic Universitas Diponegoro Semarang 50275 Indonesia

The study was done at Semarang, Central Java. The purpose of this study is to determine the variation of field susceptibility to landslide in the city of southern Semarang. Vulnerability includes physical, social, economic, and environmental ones. Each region has varying levels, types and characteristics of vulnerability. The results show that the vulnerability level of landslide is divided into 4 parts according to vulnerability indicator in Perka BNPB number 2 of 2012. The index categories were also modified into five categories from very low (1,00 to 1,40), low (1,41 to 1,80), moderate (1,81-2,20), high (2,21-2,40) and very high (2,41-3,0). Southern Semarang has moderate and high degree of vulnerability. The average vulnerability rate is in the high category with an index value of 2,20. The lowest average vulnerability is owned by Gunung Pati sub-District, while the highest vulnerability is owned by Candisari sub-District.

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Flood control study using 1D/2D numerical model in Cipabuaran Channel, Sabi River Watershed, Tangerang City

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IOP Conference Series: Materials Science and engineering 2019年第4期662卷

作者： V Pratiwi B P Yakti A Rizaldi I R Moe D P Koesrindartono Doctoral Program of Civil Engineering Civil and Environmental Engineering Faculty Institut Teknologi Bandung Jl. Ganesha 10 Bandung Indonesia Civil Engineering Department Computer Sciences and Engineering Faculty Universitas Komputer Indonesia Jl. Dipati Ukur 112-116 Bandung Indonesia Center for Water Resources Development Institute for Research and Community Services Institut Teknologi Bandung Jl. Ganesha 10 Bandung Indonesia Directorate General of Water Resources Ministry of Public Works and Housing Jl. Pattimura No. 20 Kebayoran Baru Jakarta Selatan Indonesia Public Works and Spatial Planning Agency Jl. KS. Tubun No. 96 Tangerang Indonesia

The flood that occurred in Tangerang City still remains an issue that has not been resolved. The flood arose from Bogor through the Cisadane River. Cipabuaran Channel is one of the channels in the Sabi River watershed who often overflows. Sabi River itself is a tributary of the Cisadane River. In this study, the flood control simulation in Cipabuaran Channel was carried out using a 1D-2D numerical model. Simulation is carried out with 4 scenarios based on the design flow of the 10 year return period. For scenario 1, flood control is carried out using retention pond in the downstream of Cipabuaran Channel, scenario 2 is carried out by using two retention ponds in the upstream and downstream of Cipabuaran Channel, scenario 3 using retention ponds in the downstream of Cipabuaran Channel and bypass channel to Cisadane river, and scenario 4 performed by using retention pond in the downstream of Cipabuaran Channel and normalization on the Channel. Simulation results show the effectiveness of flood reduction for each scenario, in scenario 1 flood can be reduced by 9%, scenario 2 flood can be reduced by 32.52%, scenario 3 flood can be reduced by 77.34% and for scenario 4 flood can be reduced by 95%. From these results, it can be concluded that scenario 4 where flood control is carried out using a retention pond in the downstream of Cipabuaran Channel and normalizing the River can reduce flooding significantly.

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