Hasil Pencarian  ::  Simpan CSV :: Kembali

Hasil Pencarian

Ditemukan 4 dokumen yang sesuai dengan query
cover
Dyah Rusty Indriani
"Untuk meningkatkan konsumsi kelapa sawit domestik, Pemerintah Indonesia telah secara agresif mengimplementasikan program mandatori B20. Kebijakan ini juga merupakan bagian dari upaya Pemerintah untuk mengurangi ketergantungan terhadap impor minyak serta mengurangi emisi gas rumah kaca. Meski demikian, implementasi kebijakan ini memiliki dampak terhadap ketersediaan air dan pangan akibat peningkatan konversi dan ekspansi lahan tanaman penghasil biofuel di masa mendatang. Tidak dapat dipungkiri bahwa air, energi dan pangan merupakan sumber daya yang penting untuk mencapai agenda pembangunan berkelanjutan. Meningkatnya permintaan terhadap ketiga sumber daya tersebut tentu saja menimbulkan tantangan dalam pelestariannya. Lebih lanjut lagi, permasalahan ini menjadikan keseimbangan antara sumber daya air, energi dan pangan sulit untuk direalisasikan mengingat perencanaan dan pengelolaan ketiga sumber daya tersebut berada di bawah sistem sektoral yang disonan. Hubungan antara ketiga sumber daya tersebut merepresentasikan sebuah sistem yang dinamis dan kompleks, sehingga memerlukan sebuah pendekatan holistik dari perspektif Water-Energy-Food nexus. Penelitian ini bertujuan untuk memahami trade-off yang ditimbulkan dari sumber daya air, energi dan pangan pada industri biofuel dengan menggunakan pendekatan sistem dinamis. Berbagai faktor yang mempengaruhi pengembangan industri biofuel di Indonesia perlu dipertimbangkan dalam merumuskan kebijakan yang dapat menyeimbangkan sumber daya air dan pangan secara berkelanjutan. Hasil penelitian ini menunjukkan bahwa pengimplementasian kebijakan memberikan dampak yang berbeda-beda sesuai dengan sektor yang disasar oleh kebijakan tersebut. Pengujian kebijakan yang dilakukan pada empat macam skenario ini diharapkan dapat membantu para pengambil keputusan untuk merumuskan kebijakan pengelolaan sumber daya berbasis WEF nexus pada sektor biofuel secara efektif dan efisien. Terakhir, implikasi dan limitasi hasil penelitian akan didiskusikan sehingga dapat dikembangkan untuk penelitian-penelitian terkait WEF nexus di Indonesia

In an attempt to increase domestic palm oil consumption, Indonesia has enforced the mandatory use of 20 percent blended biofuel (B20). This policy is part of the government efforts to reduce oil dependency in energy use and greenhouse gas emissions. Nevertheless, the implementation of the policy prones to affect the water and food availability as the demand for biofuel crops is expected to grow significantly in the coming years. Correspondingly, sufficient quantity of water, energy, and food resources is considered essential to achieve the sustainable development agenda. The increasing demand for all three resources undeniably places a great strain on its preservation management. On the other hand, the planning and management of these resources are under dissonant sectoral systems. This issue, which can make the balance between the three resources arduous to realize, needs to be scrutinized. The complex relationship between the three resources reflects a complex dynamic system, needing a holistic approach that considers the integration of Water-Energy-Food (WEF) nexus to understand better the system. Therefore, this study aims to understand the trade-offs between the WEF nexus on the production of biofuel using a system dynamics approach. Many underlying factors affecting biofuel development should be taken into consideration when formulating policy for attaining a sustainable balance between water and food resources. This study indicates that each policy implementation results in various impacts depending on the targeted sectors. Moreover, the policy is tested upon four different scenarios in order to help the policy makers during the formulation process of WEF resources management policy in the biofuel sector. Lastly, further discussion mentions the implications and limitations of the study as a basis to develop future researches on similar theme of WEF nexus in Indonesia"
Depok: Fakultas Teknik Universitas Indonesia, 2021
T-Pdf
UI - Tesis Membership  Universitas Indonesia Library
cover
"This book extends the framework of the climate-energy-land nexus to elucidate political, economic, social, and institutional factors and causal mechanisms that stringent climate targets bring about, rather than mitigate a disproportional heavy burden on the forest sector in Indonesia.
Assessing climate, energy, agricultural, forest, and transmigration policies, and REDD+ and biochar solutions through a multidisciplinary approach, ranging from biological, agricultural, technological, economic, and institutional lenses, the book identifies the political-economic and socio-technical regimes that cause the crosssectoral transfer of responsibility for greenhouse gas emissions to palm-oil-based biofuel, imposing an excess burden on the forest sector and accelerating indirect land-use change. It also proposes possible countermeasures for agricultural and forest sectors, reconfirming that technical applications and integrated policymaking should trigger the socioeconomic changes that will make transformative change happen in Indonesia.
As an analysis of the success, or otherwise, of stringent climate targets, policies, and technological and non-technological measures on the reduction of greenhouse gases, this book will be of great interest to students and scholars in the fields of environment & sustainability, Asian studies, energy, environment and agriculture, forestry, and agriculture & environmental sciences. It will also appeal to practitioners and policymakers tackling net-zero emissions and land and forest governance."
London: Routledge, 2023
e20534420
eBooks  Universitas Indonesia Library
cover
Angga Arianda
"ABSTRAK
Pertumbuhan minat akan produksi biofuel dari minyak nabati telah memicu peningkatan permintaan crude palm oil (CPO) yang merupakan sumber potensial untuk pembuatan biofuel. Namun, terdapat masalah yang dihadapi dalam proses transportasi fluida dengan memanfaatkan sistem perpipaan untuk berbagai aplikasi industri. Masalah tersebut termasuk konsumsi daya pompa yang tinggi karena adanya hambatan aliran yang tinggi dan sedimentasi oleh kristal yang terbentuk dari proses pengkeruhan dalam aliran CPO. Surfaktan nonionik umumnya digunakan sebagai penurun titik keruh (cloud point) dan juga dikenal sebagai drag reducing agent yang baik. Penelitian ini bertujuan untuk melakukan penyelidikan tentang efektivitas surfaktan nonionik sebagai drag reducing agent dalam menciptakan pengurangan hambatan pada aliran CPO yang melalui pipa spiral segilima. Metodologi penelitian ini menggunakan metode eksperimental dan analisis numerik. Metode eksperimental dilakukan menggunakan pipa spiral pentagon dengan rasio pitch (P/Di) 10.8 dan pipa bulat dengan diameter dalam 4 mm sebagai pembanding. Analisis numerik dilakukan menggunakan computational fluid dynamics untuk membuat analisis lebih lanjut tentang penelitian ini. Efektivitas pengurangan drag dianalisis melaui faktor gesekan dan profil distribusi kecepatan. Berdasarkan hasil penelitian ini, konsentrasi surfaktan nonionik memberikan pengaruh signifikan pada pengurangan hambatan, sementara pipa spiral segilima dapat meningkatkan pengurangan hambatan yang lebih tinggi dibanding pipa bulat.

ABSTRACT
The growing interests to produce biofuels from vegetable oil have been triggering increases in demands for crude palm oil (CPO) as a potential source for biofuel production. However, there are problems encountered in the fluid transportation process utilizing piping systems for various industrial applications. Those problems include high consumption of fluid pumping power due to high drag resistance and sedimentation by crystallization results in the formation of cloud in CPO flows. Nonionic surfactant has commonly been used as a cloud points reducer and also known as a good drag reducing agent. This study aimed at conducting an investigation on the effectiveness of nonionic surfactant as a drag reducing agent to create drag reduction of CPO flow through pentagon spiral pipe. This research methodology ware experimental and numerical analysis. The experimental research uses a pentagon spiral pipe with pitch ratio (P/Di) 10.8 and a circular pipe with 4 mm inner diameter as a comparison. The numerical analysis uses computational fluid dynamics to create more investigation about this research. The effectiveness of the drag reduction was analyzed by friction factor and velocity profile distribution. Looking at the results of this study, nonionic surfactant concentrations deliver a significant influence on drag reduction, while pentagon spiral pipe promote higher drag reduction than circular pipes.
"
Depok: Fakultas Teknik Universitas Indonesia, 2020
S-pdf
UI - Skripsi Membership  Universitas Indonesia Library
cover
Karima Agustianti
"
ABSTRACT
The main energy sources in Indonesia generally still rely on fossil fuels, such as petroleum, coal and natural gas. Biofuel is a solution that can be applied as a substitute for fossil fuels. This research was conducted by simulating the biofuel production process and calculating the amount of carbon dioxide emissions produced. This simulation is done by modeling the hydroprocessing process using Unisim R390.1 by optimizing the operating conditions for each raw material. The Hydrotreatment process was varied at a pressure of 1-5 MPa and a temperature of 250oC - 350oC. shows that palm oil is the most effective in producing bioavtur at a temperature of 300oC and a pressure of 3 MPa, while nyamplung oil is the most effective for producing renewable diesel at a temperature of 300oC and a pressure of 3 MPa. The calculation of the number of emissions from the carbon dioxide life cycle shows that to produce 1 kg of biofuel, 3.82 x 103 kg of CO2 is produced
"
Depok: Fakultas Teknik Universitas Indonesia, 2020
S-pdf
UI - Skripsi Membership  Universitas Indonesia Library