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All Journal International Journal of Marine Engineering Innovation and Research Community Development Journal: Jurnal Pengabdian Masyarakat Abdimas Aswaja: Jurnal Pengabdian Masyarakat
Eka Sulistyaningsih
Universitas AKPRIND Indonesia
Religion Humanities Automotive Engineering Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation

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Microplastic Contamination in Yogyakarta's Rivers: Spatial Analysis and Factor Assessment to Identify Key Pollutants Eka Sulistyaningsih; Rokhana Dwi Bekti; Kris Suryowati; Erma Susanti; Gupita Cahyaning Mutiara; Maria Oktafiana Dedu
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 1 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i1.4743

Abstract

River water quality monitoring aims to determine the state of river water quality and to ensure its safety for human health and the sustainability of its use. Some important parameters that are often used to measure river water quality include chemical oxygen demand (COD), biological oxygen demand (BOD), total suspended solids (TSS), pH, Temperature, and microplastic content. This study uses multiple linear regression to determine which factors contribute significantly to river water quality. Samples were collected from the Winongo, Gadjah Wong, Bulus, Oyo, Belik, Tambakbayan, Opak, and Kuning rivers in Daerah Istimewa Yogyakarta (DIY) and distributed in 20 points. The results of the correlation matrix show the relationships between the variables in the data. The DO variable has the most substantial relationship with microplastics, suggesting that water quality, measured by oxygen levels, may be related to microplastic pollution. The relationship between pH and Temperature is also moderate. However, other relationships tend to be weak, suggesting that other factors may be more influential in determining these variables' relationships. The multiple linear regression model shows that an increase in pH, a decrease in Temperature, an increase in DO, and a decrease in TSS will increase the amount of microplastics. Furthermore, through spatial analysis and geographically Weighted Regression (GWR) modelling, DO significantly affects 12 observation points and does not affect eight. The spatial approach shows that the causes of river water pollution are different in each location. Therefore, each site's treatment is also different according to its characteristics.
Optimization of the Mechanical Properties of Bio-degradable Plastics from Chitosan with Acetic Acid Solvent Ani Purwanti; Eka Sulistyaningsih; Wisnu Prayogo; Muhammad Yusuf
International Journal of Marine Engineering Innovation and Research Vol. 8 No. 3 (2023)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i3.5116

Abstract

Shrimp shell waste contains chitin which can be processed into chitosan. Chitosan can be utilized as an edible plastic. The film is expected to maintain food quality by resisting water vapour transfer as a preservative and maintaining odour. Edible plastics as food protectors are expected to have optimal mechanical properties. Chitosan films are brittle, so plasticizers are used to increase their flexibility. The mechanical properties of the film may change during storage time. The decline in film quality is expected to be fast enough to allow edible plastics for food wrapping. This study aims to determine the effect of glycerol addition and film storage time on the mechanical properties of edible chitosan film. From the results obtained, adding glycerol plasticizer produces films with thickness and elongation that tend to increase. In contrast, the tensile strength value increases and then decreases with the addition of glycerol. The optimal mechanical strength value was obtained in the film solution with glycerol at 0.3 mL/g chitosan with a maximum tensile strength of 200 kgf/cm2 and a per cent elongation of 135%. The thickness of the film produced was 0.17 mm. The film produced in this study has met the standards of film mechanical strength (tensile strength and per cent elongation) based on the Japanese Industrial Standard (JIS). Meanwhile, based on the Indonesian National Standard (SNI), the tensile strength value produced in this study has yet to meet the SNI standard.
PENINGKATAN PRODUKTIVITAS PERAJIN ECOPRINT DARUSSALAM, BANTUL MENGGUNAKAN ALAT STEAMER BERKAPASITAS 200 LITER Satriawan Dini Hariyanto; Andrean Emaputra; Eka Sulistyaningsih
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 5 No. 6 (2024): Vol. 5 No. 6 Tahun 2024
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v5i6.40839

Abstract

Kelompok perajin Ecoprint Darussalam merupakan komunitas ibu-ibu di Kabupaten Bantul, Daerah Istimewa Yogyakarta, yang memproduksi kain ecoprint. Selama ini, proses pembuatan kain masih dilakukan secara manual, yang meliputi tahapan pembersihan kain, penataan daun pada kain, penggulungan kain, perebusan kain, dan pengeringan. Salah satu tahapan yang memerlukan perhatian khusus adalah proses penggulungan kain, yang saat ini dilakukan secara manual menggunakan tangan dengan durasi sekitar 6 menit. Metode manual ini menyebabkan tingkat kekencangan kain tidak merata dan membutuhkan tenaga dari setidaknya dua orang. Oleh karena itu, diperlukan alat bantu untuk mempercepat proses penggulungan kain. Selain itu, produktivitas kelompok perajin ecoprint juga dipengaruhi oleh kapasitas perebusan kain. Dalam kegiatan pengabdian masyarakat ini, kapasitas perebusan kain berhasil ditingkatkan dari semula 60 liter menjadi 200 liter per proses. Hasil dari kegiatan ini adalah terciptanya mesin steamer berkapasitas 200 liter yang mampu meningkatkan kapasitas produksi dari semula 12 lembar menjadi 60 lembar kain. Dengan demikian, alat ini mampu mempercepat proses produksi kain dan mengurangi waktu pengerjaan secara signifikan.
PENINGKATAN PENGETAHUAN TENTANG PENGEMBANGAN PRODUK OLAHAN KETELA MELALUI PERLOMBAAN HUT REPUBLIK INDONESIA PADA IBU-IBU KALIJERUK I DAN II Andrean Emaputra; Ellyawan Setyo Arbintarso; Toto Rusianto; Endang Widuri Asih; Mega Inayati Rif`ah; Eka Sulistyaningsih; Dandung Junustisio Muktar; Davin Satria Nugraha
Abdimas Aswaja: Jurnal Pengabdian Masyarakat Vol. 2 No. 1 (2026): Abdimas Aswaja: Jurnal Pengabdian Masyarakat
Publisher : LPPM IAI Dar Aswaja Rokan Hilir

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Currently, there is a growing trend of processed foods made from natural and healthy ingredients. One such ingredient is cassava, which provides good nutritional value. Additionally, this ingredient is tasty, affordable, and readily available in local communities. One of the residents of the Special Region of Yogyakarta is the community of Kalijeruk I and II Hamlets. This community has abundant cassava resources in its area because the hamlets still have many rice fields. However, the women in this community have not yet produced a variety of processed cassava products. Therefore, these women need to learn more about the different types of processed cassava products. A team of lecturers and students from the University of AKPRIND Indonesia carried out this community service activity. The activity was divided into several stages: first, socialization about the competition; second, the cooking contest; third, food presentation; fourth, food evaluation; and fifth, announcing the winners. This event provided the mothers with basic knowledge and motivation to create delicious, nutritious, and economically valuable cassava-based dishes. This was demonstrated by the 12 different cassava dishes prepared by the mothers.
Co-Authors Andrean Emaputra Ani Purwanti Dandung Junustisio Muktar Davin Satria Nugraha Ellyawan Setyo Arbintarso Endang Widuri Asih Erma Susanti Gupita Cahyaning Mutiara Kris Suryowati Maria Oktafiana Dedu Mega Inayati Rif`ah Muhammad Yusuf Rokhana Dwi Bekti Satriawan Dini Hariyanto Toto Rusianto Wisnu Prayogo