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Tri Yuni Hendrawati
Universitas Muhammadiyah Jakarta
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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SYNTHESIS OF ECOENZYMES FROM ORANGE AND PINEAPPLE PEEL WASTE WITH VARIABLE FERMENTATION TIME TO YIELD AS ORGANIC FERTILIZER Winarni; Athiek Sri Redjeki; Tri Yuni Hendrawati
Journal of Applied Sciences and Advanced Technology Vol. 8 No. 2 (2025): Journal of Applied Science and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

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Abstract

Most of the waste currently available is organic waste originating from household activities in the form of food scraps, seed shells from fruit and vegetables, and fruit waste. The accumulation of organic waste triggers natural decomposition, releasing methane (CH4) gas. This gas not only contributes to increased greenhouse gas levels in the atmosphere, but its accumulation under landfills also has the potential to cause explosions. Organic waste from fruit and vegetables can be processed into ecoenzymes through a fermentation process. Ecoenzymes have many uses, including fertilizer, pest control, antiseptic soap, and household cleaners. The purpose of this research was to determine the effect of time. The resulting ecoenzymes will be used as organic fertilizer. A quantity of orange peel and pineapple peel of 150 grams, respectively, was added to 100 grams of finely ground palm sugar and 1000 ml of water, then fermented for 0, 7, 14, 21, 28, 35, 42, 49, and 56 days. The fermentation results were then measured for pH and organoleptic tests were carried out in the form of visual color and aroma and tested for nitrogen (N), diphosphorus pentoxide (P2Os) and dipotassium oxide (K2O) content. The ecoenzyme obtained was then added with ash to increase the levels of N, P2O5, K2O. Based on the research results, the best time was 56 days and the best raw material ratio was 1:3:10 producing an ecoenzyme that was cloudy brown in color and had a sour aroma and a pH of 3.11. The total N, P2O5, and K2O content of the ecoenzyme produced from the fermentation process was 0.13%. The liquid organic fertilizer produced from the ecoenzyme with the addition of ash had a pH of 6,3. After adding ash, the N, P2O5, K2O content increased to 1.6%. This result still does not meet the standards of the Minister of Agriculture of the Republic of Indonesia which requires a minimum N, P2O5, and K2O content of 2%.
Optimization of Demulsifier Formulation for Enhanced Oil-Water Separation in Waxy Crude Oil: A Case Study at Sangasanga Field X, Indonesia Bustani Anggit Nugroho; Irfan Purnawan; Tri Yuni Hendrawati
Journal of Applied Sciences and Advanced Technology Vol. 9 No. 1 (2026): Journal of Applied Science and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

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Abstract

The decline in oil production at Pertamina EP Sangasanga Field X is primarily attributed to the formation of highly stable water-in-oil (W/O) emulsions, which significantly increase fluid viscosity (500–1,000 fold), raise pumping costs, and induce corrosion in production equipment and pipelines. This stability is driven by naturally occurring surface-active compounds—specifically asphaltenes (0.084%) and wax (5.43%)—that form a rigid interfacial film acting as a mechanical barrier against droplet coalescence. This research aims to identify the most effective demulsifier formula and concentration for breaking stable W/O emulsions and reducing Basic Sediment and Water (BS&W) levels to below 0.5%. Laboratory testing was conducted using the bottle test method (ASTM D96) at five demulsifier formulations at concentrations ranging from 0 to 100 ppm and settling times of 10 to 60 minutes. Final BS&W levels were verified using the centrifugation method (ASTM D4007). The results demonstrate that Formula 3 –composed of diepoxide, amine derivative, and polyacrylate– at a concentration of 100 ppm, exhibited the highest separation rate constant (k = 0.653 min⁻¹) and achieved a final BS&W of 0.4%, meeting the Pertamina RU V Balikpapan standard of <0.5%, with a removal efficiency of 95.82% after 60 minutes. These findings contribute to the development of location, specific demulsification strategies for waxy crude oils, highlighting the critical role of wax content –not merely asphaltene– in emulsion stability. The research also identifies a concentration saturation point beyond 100 ppm, where re-emulsification occurs, providing important practical guidance for field operations.
Co-Authors Ade Nurul Hidayat Agdila, Alivia Fernanda Agung Siswahyu Agung Siswahyu Agus Priyanto Aini, Latifah Nur Alvika Meta Sari Andriyani Andriyani Anggaraini, Nisrina Harum Anwar Ilmar Ramadhan Arinda, Yosi Duwita Arthur Setyawan Fajar Athiek Sri Redjeki Athiek Sri Redjeki Ayu Candraningsih Azmairit Aziz Azmi, Wan Hamzah Azqia, Khalisya Nasywa Budiyanto Budiyanto Bustani Anggit Nugroho Cakrawala, Orion Nawandie Cardosh, Syafira R Darto Darto, D Dedek Rahayu Deri Iryawan Dessy Iriani Putri Desy Hijriyah Dimas Adhitya Rahman Dimas Yoga Pradipta Pratama Efrizon Umar Efrizon Umar Efrizon Umar Elvia Desiana Erdawati Erdawati Erdawati Erdawati Ericha Indriani Marjuki Erna Astuti Ery Diniardi Fachry Abda El Rahman Faisal Ismail Febri Yani Fiqih Azis Pangestu Firgi Adha Listanto Firmansyah Firmansyah Firmansyah Firmansyah Furqon Cipta Ismaya Furqon Cipta Ismaya G. Gunawan Ghaida Gusrinisa Hakim, Rusnia Junita Hamza Mursandi Hana Ambarwati Hana Ambarwati Hardiman, Bayu Haryanto, Lorenta In Helfi Gustia Heri Setiono Heryanti Heryanti Hidayat, Sri hidayat, untung Ika Kurniaty Ilham Kurniawan Indra Budi Susetyo Irfan Purnawan Ismiyati Ismiyati Ismiyati Ismiyati Ismiyati Ismiyati Ismiyati Ismiyati, Ismiyati Istianto Budhi Rahardja kadarisman, muhammad Kukuh Haryadi Kushendarsyah Saptaji Lemsoh, Jarunee Lorenta In Haryanto Lusida, Nurmalia Miftah Andriansyah, Miftah Muh. Kadarisman Muhammad Kosasih Muhammad Reza Huseini Mutiara Salsabila Nasta Ina Robayasa Ninin Asminah Noni Noni Nurul Hidayati Fithriyah OKTA MAHENDRA, OKTA Oktariawan, Reddy Rahardja, Istianto Budhi Rahmawati Suryani Ramadhani, Annisyah Ratri Ariatmi Nugrahani Raynaldi Syarief Armanzah Renty Anugerah Mahaji Puteri Ribath Faruqi Rizalman Mamat Rohmat Mufti Ali Rosmi, Fitria Rusnia Junita Hakim Rusnia Junita Hakim Safira, Ajeng Listiani Semendo, Rifqi Putra Setiawan, Hanif Rama Yuda Shela Niken Wijayanti Siska Ayu Anggraini Siswahyudianto Suffah, Nurullia Sukrianto Sulis Yulianto Suratmin Utomo Suratmin Utomo Suratmin Utomo Susanty Susanty Susanty Susanty Susanty, Susanty Syamsudin AB Tria Astika Endah Permatasari Ummul Habibah Hasyim Viki Febrianoca Wan Hamzah Azmi Wenny Diah Rusanti Wika Prasetia Dewi Winarni Wiwik Handayani Wiwik Handayani Wulan Wibisono Is Tunggal Wulan Wibisono Is Tunggal, Wulan Wibisono Wusono, Ciska Nabila wusono, ciska nabilah Wusono, Ciska Nabilla Yukarie Ayu Wulandari Yully Mulyani Yusril, Ariadi Yustinah Zelania In Haryanto Zidni, Irfan Azka Zihan, Nurul