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Rusdianasari Rusdianasari
Politeknik Negeri Sriwijaya
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Biodiesel Production from Rubber Seed Oil as An Alternative Energy Source – A Review Herawati Budiastuti; Nira Aulia Hanifah; Devita Utami Mardiani; Haryadi Haryadi; Rusdianasari Rusdianasari; Ahmad Fudholi
Jurnal Internasional Penelitian Teknologi Terapan Vol 3 No 2 (2022): October 2022
Publisher : Bandung State Polytechnic (Politeknik Negeri Bandung)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/ijatr.v3i2.92

Abstract

Biodiesel is one of alternative energies that can be used to overcome problem caused by limited amount of fossil fuels reserved. Biodiesel can be made from rubber seed oil that has high potencies in Indonesia. The availability of rubber seed is quite much with more than 3-million-hectare rubber plantation area. The production of biodiesel from rubber seed oil has been carried out by several researchers using various methods. Therefore, this study was conducted as a review to obtain optimum operation conditions and effect of antioxidant addition in biodiesel production. Production methods of biodiesel from rubber seed oil observed in this study are esterification-transesterification, one stage transesterification, and in situ transesterification methods. Types of antioxidant added to biodiesel from rubber seed oil observed are TBHQ, D-TBHQ, BHA, BHT, PG, and OG. Esterification-transesterification was chosen as the most effective method in producing biodiesel with a minimum yield of 96.4%. Antioxidant addition of TBHQ with 1000 × 10-6 (ω) dosage was selected as the most effective to increase biodiesel induction period to become 6.41 hours, fulfilling the SNI 7182-2015 standard, which is minimum of 6 hours. Standard used as the reference for observing biodiesel parameters is SNI 7182-2015.
Biocoal Characterization as an Environmentally Friendly Alternative Energy Innovation Composite Variations of Gasified Char with Coconut Shell Charcoal Aria Yopianita; Aida Syarif; Muhammad Yerizam; Rusdianasari Rusdianasari
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 2 (2022): June 2022
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v7.i2.68

Abstract

In accordance with the mandate of the Regulation of the Indonesian Minister of Energy and Mineral Resources for the use of cleaner coal through coal gasification projects, in the future the coal gasification industry will produce char as a by-product. This study aims to characterize coal gasification char using a prototype underground coal gasification (UCG) and the addition of coconut shell charcoal biomass as a raw material for making biobriquettes. By using coal as raw material from the Muara Tiga Besar Mine of PT Bukit Asam, five kinds of coal samples from different layers were obtained, which from the characterization results, both coal and char, did not have too significant deviations so that the research variables could be ignored. The results of the characterization of char from coal gasification results compared to the initial sample of coal showed an increase in calorific value, a decrease in sulfur content and a significant decrease in water content, so it can be concluded that char from coal gasification has good potential as a raw material for biobriquettes. By using char and coconut shell charcoal with the ratio of variations in the composition of char and coconut shell compositions is 100%:0%; 75%:25%; 50%:50%; 25%:75% and 0%:100% carried out the briquetting process. The results of the biobriquette characterization met the criteria of the Indonesian National Standard (SNI) 01-6235-2000 and Minister of Energy and Mineral Resources regulation No. 047 of 2006
Pembuatan Briket Komposit Cangkang Sawit dan Tempurung Kelapa dengan Variasi Perekat Tepung Tapioka sebagai Bahan Bakar Alternatif Nurhamida Nurhamida; Rusdianasari Rusdianasari; Mustain Zamhari
Jurnal Teknologi Vol 23, No 2 (2023): Oktober 2023
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v23i2.4148

Abstract

Waste from the agricultural sector in Indonesia that may be used as fuel is plentiful, but it is not well utilized by the community. The usage of wood charcoal fuel, which is extensively utilized as an energy source, would undoubtedly have a detrimental influence on the environment if used directly and constantly without passing through a particular process. Furthermore, as the consumption of oil and gas energy sources grows, the availability of oil and gas energy sources will become progressively reduced. This problem may be solved by converting it into ecologically beneficial charcoal briquettes and promoting the use of biomass waste in agriculture. Charcoal briquettes are an environmentally friendly source of biomass energy made by bonding mashed materials (such as sawdust, coconut shells, palm shells, rice husks, corn cobs, and other combustible materials) into solid blocks that are compressed under pressure using a binder in the form of tapioca flour solution. The purpose of this research is to evaluate the properties of composite briquettes made of palm kernel shells and coconut shell charcoal so that they may be utilized as alternative fuels to replace fossil fuels. The method used in this study is an experiment with qualitative analysis. Based on the results of the examination, the greatest proximate studied had the following characteristics: water content of 6.5%, ash content of 7%, flying substance content of 21%, and calorific value of 5448.1737 The findings obtained are consistent with the quality standards of charcoal briquettes established by SNI No. 01-6235-2000.
Co-Authors Ahmad Fudholi Aida Syarif Aria Yopianita Devita Utami Mardiani Fradina Septiarini Haryadi Haryadi Herawati Budiastuti Ibnu Hajar Indri Ariyanti Leila Kalsum Leila Utarina Lukmanul Hakim M. Muhajir Maryam Seyaski Fitria Moulita, RA Nurul Muhammad Taufik Muhammad Yerizam Mustain Zamhari Nira Aulia Hanifah Nurhamida Nurhamida RD Kusumanto Siproni Siproni Tresna Dewi Yohandri Bow Yohandri Bow