Collections of Chemical Engineering Students' Paper https://library.universitaspertamina.ac.id//xmlui/handle/123456789/108 2026-04-15T11:30:38Z 2026-04-15T11:30:38Z FAATHIR, MOCH. Ginting, Mayranda https://library.universitaspertamina.ac.id//xmlui/handle/123456789/15737 2026-02-23T08:12:55Z 2026-01-23T00:00:00Z

PRARANCANGAN PABRIK ASAM PALMITAT COSMETIC GRADE DARI CRUDE OIL (CPO) MELALUI METODE HIDROLISIS DENGAN KAPASITAS 16517 TON/TAHUN FAATHIR, MOCH.; Ginting, Mayranda Crude Palm Oil (CPO) ialah suatu lemak alami yang kaya akan asam palmitat yang memiliki potensi yang besar untuk menjadi bahan baku industri kosmetik. Asam palmitat didapatkan dari serangkaian proses yaitu proses degumming untuk membersihkan CPO dari komponen organik maupun pengotor lainnya dengan . Lalu dihidrolisis menggunakan katalis linear alkyl benzene (LAB) dan asam sulfat (H2SO4) untuk memecah komponen CPO menjadi fatty acid dan glycerol. Lalu Tahap fraksinasi dan pemurnian lanjutan dilakukan untuk memastikan asam palmitat yang dihasilkan memenuhi standar kualitas kosmetik, terutama dari aspek kemurnian, stabilitas oksidatif, dan keamanan kulit. Palmitat kosmetik grade banyak digunakan sebagai bahan pembentuk tekstur dan emolien dalam berbagai produk perawatan kulit dan rambut. Pemanfaatan palmitat berbasis CPO tidak hanya memberikan nilai tambah pada komoditas sawit, tetapi juga mendukung pengembangan bahan kosmetik berbasis alami dan berkelanjutan yang semakin diminati oleh konsumen.

2026-01-23T00:00:00Z Medah, Jacob Alessandro https://library.universitaspertamina.ac.id//xmlui/handle/123456789/15686 2026-02-19T02:22:44Z 2026-02-17T00:00:00Z

PRARANCANGAN DESAIN PABRIK ASAM OLEAT MELALUI PROSES HIDROLISIS CRUDE PALM OIL (CPO) DENGAN KAPASITAS 32,000 TON/TAHUN Medah, Jacob Alessandro

2026-02-17T00:00:00Z Himawan, Rizky https://library.universitaspertamina.ac.id//xmlui/handle/123456789/15683 2026-02-19T02:21:05Z 2026-02-11T00:00:00Z

LIFE CYCLE ASSESSMENT (CRADLE-TO-GATE) KARBON AKTIF LIMBAH BIOMASSA SEBAGAI ALTERNATIF COUNTER-ELECTRODE GRAFIT DALAM MEWUJUDKAN KONSEP GREEN-DSSC Himawan, Rizky The development of environmentally friendly Dye-Sensitized Solar Cells (Green-DSSC) encourages the utilization of sustainable alternative materials as electrode components. This study aims to evaluate the potential of biomass-based activated carbon derived from rice husk and coconut shell as an alternative to commercial graphite counter-electrodes using a Life Cycle Assessment (LCA) approach with a cradle-to-gate system boundary. The functional unit applied in this study is 1 cm² of DSSC counter-electrode area.The Life Cycle Inventory (LCI) was developed using a combination of secondary data, baseline database references, and process engineering approaches to estimate energy requirements at each thermochemical stage, including dehydration, devolatilization, carbonization, and activation. Energy contribution analysis was conducted through energy balance calculations and reaction enthalpy data, while environmental impact assessment was performed across several major Life Cycle Impact Assessment (LCIA) categories. Scenario evaluation of energy distribution changes was also carried out to assess the influence of energy supply strategies using a Theory of Change (ToC) approach.The results indicate that biomass-based activated carbon counter-electrodes exhibit category-specific environmental performance and reveal trade-offs among impact categories. Biomass-based counter-electrodes have not yet outperformed natural graphite counter-electrodes in several impact categories, although they perform better than synthetic graphite-based counter-electrodes. Following optimization through the Theory of Change (ToC) energy distribution scenario, overall environmental impacts can be reduced; however, new trade-offs emerge across certain impact categories.The carbonization and activation stages were identified as the main contributors to the system’s energy burden. Changes in energy source distribution demonstrate potential environmental impact reductions, particularly in categories sensitive to energy combustion, and offer promising opportunities for further process optimization to minimize environmental impacts.

2026-02-11T00:00:00Z Rayhan, Gahara Naufal https://library.universitaspertamina.ac.id//xmlui/handle/123456789/15115 2025-10-11T07:01:08Z 2025-07-18T00:00:00Z

PYROLYSIS OF WASTE POLYETHYLENE TEREPHTHALATE (PET) INTO PETROLEUM PRODUCTS Rayhan, Gahara Naufal SolvoPro Engineering Sdn. Bhd.'s stakeholders intend to construct a new facility using cutting-edge recycling technologies to turn industrial waste into goods with added value, aligning with the rising demand for zero waste practices. As engineers at the company, our team is tasked with designing a recycling plant that converts waste into valuable products, with PET plastic waste selected due to its significant contribution to the global plastic waste problem, which accounts for 400 million tonnes per year. In this report, several methods for converting plastic waste into valuable fuels are identified, but pyrolysis was chosen for its relatively low temperature requirement, high product revenue potential, and moderate capital cost. Potential plant locations such as Negeri Sembilan, Johor, and Perak were selected based on criteria including waste pricing, production volume, market access, power and water supply, labor availability, proximity to waste disposal facilities, and capital costs. Supporting data and parameters were sourced from research articles to justify these decisions. A continuous yield reactor was chosen for its suitability to the pyrolysis process, offering large- capacity continuous flow, adaptability to varying stoichiometry, and operation without kinetic data. A complete Process Flow Diagram (PFD) was designed according to Petronas standards, and energy and mass balances were manually calculated to validate simulation results conducted in ASPEN PLUS, with heat integration incorporated to optimize cost and energy efficiency. From the economic evaluation, the cost of raw materials for PET feedstock at peak production was approximately RM 2,061,104.28, with projected revenue from commercialized pyrolysis products estimated at RM 1,167,769,293.67. The total annual electricity cost amounted to RM 1,269,864.44, and based on the economic potential analysis, EP 1 was calculated at RM 1,165,708,189.39 and EP 2 at RM 567,149,206.47, demonstrating that the plant design is financially viable. A hazard analysis was conducted to assess risks including hazardous material handling, operating conditions, safety protocols, and equipment management. Pollution minimization strategies were also proposed to align with climate change mitigation goals and regulatory requirements, including reducing CO₂ emissions through improved energy efficiency and optimized reactor performance.

2025-07-18T00:00:00Z