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All Journal Justek : Jurnal Sains Dan Teknologi AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) International Journal of Research in Vocational Studies (IJRVOCAS)
Daya Wulandari
Politeknik Manufaktur Negeri Bangka Belitung
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Other

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Life Cycle Assessment of Production Bio-oil from Thermal Cracking Empty Fruit Bunch (EFB) Daya Wulandari; Rusdianasari Rusdianasari; Muhammad Yerizam
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 6 No. 3 (2022)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (349.554 KB) | DOI: 10.29165/ajarcde.v6i3.118

Abstract

Empty fruit bunch (EFB) is one of the abundant biomass waste from oil palm and it is an issue that it can be used as renewable energy in the form of Bio-oil. Bio-oil is produced by a thermal cracking process. This research aims to identify the potential environmental impact of Bio-oil production from EFB as fuel. Life Cycle Assessment (LCA) with gate to gate approach is used in data processing applications for networks in Simapro V.9 and the database used is similar to the characteristics of the eco invent database. Functional units are used to show environmental references in impact categories, such as energy used and global warming potency. The results show that the stage of the bio-oil production cycle in the pretreatment process has a greater global warming impact than the others, amounting to 131.10013 kg CO2 eq. The results of the analysis using the networking graph on the Simapri, show that the environmental hotspot of the thermal cracking process for Bio-oil production is caused by the use of electricity from the State Electricity Company (PLN) and the release of chemical substances from the process. From the results of the LCA, environmental performance improvement or continuous improvement can be done is by managing energy use and installing equipment.
Overview of the Utilization of Palm Empty Fruit Bunch (PEFB) as Raw Material for Bioplastic Production Pakpahan, Cindy; Utarina, Leila; Cahyani, Aulia; Moulita, R.A. Nurul; Wulandari, Daya
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 5 No. 3 (2025): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v5i3.389

Abstract

This research examines the utilization of Palm Empty Fruit Bunch (PEFB), a byproduct of the palm oil sector, as a sustainable feedstock for bioplastic manufacturing. Bioplastics, derived from natural substances like cellulose, starch, and vegetable oils, offer a sustainable substitute for traditional petroleum-based plastics, which substantially contribute to environmental degradation. This research examines the processes of cellulose extraction, delignification, and the diverse pre-treatment techniques employed to transform PEFB into bioplastics. The findings indicate that PEFB is abundant in cellulose, rendering it a viable material for bioplastic manufacturing. Moreover, the inclusion of plasticizers such glycerol and chitosan enhance mechanical qualities, including tensile strength and flexibility, while preserving biodegradability. The study also emphasizes the influence of various processing conditions and additives on the ultimate attributes of the bioplastic, such as water resistance and mechanical performance. The results indicate that bioplastics sourced from PEFB may aid in diminishing plastic waste and fostering sustainable materials in sectors like packaging. The analysis continues by underscoring the necessity for more research to enhance production techniques and evaluate the scalability of PEFB-based bioplastics in practical applications.
The Effect of Seawater and Sea Sand Composition Ratio on the Characterization of Voltage and Electric Current Riztamala Diana; Daya Wulandari; Putri Afifa Nur Oktadina; Roviu Darojat
Justek : Jurnal Sains dan Teknologi Vol 9, No 1 (2026): March
Publisher : Unversitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/justek.v9i1.37799

Abstract

The limited availability of fossil fuels and their environmental impacts have encouraged the development of more environmentally friendly alternative energy sources. One of the methods of renewable energy is to utilize seawater and sea sand. This research aims to analyze seawater and sea sand in generating electrical energy. Source of seawater and sea sand from Tongachi Beach Bangka Belitung Indonesia. The research method was mixing seawater and sea sand with a ratio of 100:0%, 70:30%, 50:50%, 30:70%, dan 0:100%.  Measure the seawater according to the percentage 100%, 70%, 50%, 30% and 0%. Then Weigh the sea sand according to the percentage ratio 0%, 30%, 50%, 70% and 100%.  Add the seawater and sea sand to the mixing container according to the weighed ratio. The electrical energy generated is determined by observing the current flow and power are seen on the multimeter. The results showed that the composition ratio of 100:0 % seawater and sea with a voltage of 0.67 V, an electrical current of 0.2 mA and a power of 0.134 watts. It has of the analysis of the composition of seawater and sea sand can potentially be used as a source of electrical energy.                           
Co-Authors Cahyani, Aulia Moulita, R.A. Nurul Muhammad Yerizam Pakpahan, Cindy Putri Afifa Nur Oktadina Riztamala Diana Roviu Darojat Rusdianasari Rusdianasari Utarina, Leila