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All Journal Jurnal Energi Baru dan Terbarukan Jurnal Rekayasa Proses
Afifah, Meita
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Chemical Engineering, Chemistry & Bioengineering Electrical & Electronics Engineering Energy Engineering Environmental Science

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Modification Reactor Biogas With Isolation Water And Scrubber To Increase Biomethane Production Afifah, Meita; Prihatini, Chindy Aulia; Syamsuri, Iyappateya Gelegar Dirgantara; Didik, Nurjan; Elsyana, Vida; Ramandani, Adityas Agung
Jurnal Energi Baru dan Terbarukan Vol 5, No 2 (2024): Juli 2024
Publisher : Program Studi Magister Energi, Sekolah Pascasarjana, Universitas Diponegoro, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jebt.2024.23027

Abstract

Biogas is alternative energy produced through the process of fermenting organic materials in anaerobic conditions to produce methane gas (CH4). The quality of the biogas depends on the concentration of the CH4, the higher the content, the better the quality. One way to improve the quality of biogas so that the content of methane gases in biogases increases and can reduce gases such as CO2, H2S, and other gases is by using a scrubber that contains compound fertilizer as its purification. The objective of this research is to reuse organic waste into useful biogas as alternative energy, and to apply water as a methane gas isolator so as not to be wasted on batch and scrubber reactor processes for the purification of H2S content. The old test results of the biogas flame and the color test of the flame on the 20th and 28th days could not be done, because of the little gas formed to the pressure of the gas generated 0 atm. On the 40th day where the gas pressure generated 5 atm, but the results of the biogas fire test did not come out because the gas produced was still small so the flow of gas to the stove did not reach. Biogas production needs to be increased so that the long-standing test of flame and flame color of biogas can be done well. This research also was explored step by step to producing biogas using organic waste. In addition, consideration should be given to the use of other methods to increase gas production so that these alternative energy applications can run optimally.
Synergistic ultrasonic-microwave assisted extraction (UMAE) for enhanced fat extraction from nutmeg seeds Afifah, Meita; Teguh, Dedi; Shintawati; Ramandani, Adityas Agung
Jurnal Rekayasa Proses Vol 19 No 1 (2025): Volume 19, Number 1, 2025
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.16283

Abstract

Nutmeg seeds contain essential oils and fats, are widely used in the cosmetic and pharmaceutical industries. This research aims to determine the yield, physicochemical characteristics and fat composition of nutmeg seeds extracted from Ultrasonic-Microwave Extraction (UMAE). The research used a factorial completely randomized design (CRD) method with the independent variables, length of extraction time (45, 90, 135 minutes) and microwave power (300 and 450 watts). The dependent variables in this research are yield, melting point, specific gravity, acid number and saponification number. The results showed that the highest fat yield of nutmeg was 30.48% at 300 Watts and 135 minutes. The physicochemical characteristic of nutmeg fat was yellow with specific gravity, melting point, acid number and saponification number were 0.96, 52.4 °C, 16.69 mg KOH/g fat and 254.96 mg KOH/gram fat. GCMS results show that the fat composition is trichloromethyl, isopropyl phosphoranidothioic acid and lauric acid triglyceride which have potential as cosmetic raw materials.
Co-Authors Didik, Nurjan Elsyana, Vida Prihatini, Chindy Aulia Ramandani, Adityas Agung Shintawati Syamsuri, Iyappateya Gelegar Dirgantara Teguh, Dedi