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Redesign of the sizing process optimization to produce warp yarn with strong weaving ability Kartika, Wahyu; Soepardi, Apriani
OPSI Vol 16 No 2 (2023): ISSN 1693-2102
Publisher : Jurusan Teknik Industri, Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v16i2.11355

Abstract

The research focuses on optimization of the sizing process parameters for cotton warp yarn material. The sizing process is a crucial step where warp yarn is coated with a starch solution before weaving. The aim is to produce warp yarn with strong weaving ability, thereby facilitating the entire process. To achieve this, several factors are considered, namely the steam bar, and squeeze roll pressure, including machine speed. The techniques used to address this issue include Taguchi in collaboration with Grey Relational Analysis (GRA) to effectively address multi-responses. In this analysis, the larger the better characteristic was applied to S/N Ratio, indicating that the higher the GRG value, the closer it is to the desired optimum condition. Based on the calculations from S/N Ratio response table for the GRG, it can be determined that factor steam bar pressure was selected at 4 Bar, with an average S/N Ratio value of -2.935. factor squeeze roll should be set to level 10 Km/m3, as it yields an average S/N Ratio value of -2.912. Factors squeeze roll) and C (Machine Speed) were selected at levels 2 (10 Km/m3) and 1 (45 M/Min) with average values of -2.912, and -4.771, respectively. 
Sosialisasi Pengelolaan Limbah B3 Pada Kegiatan Sekolah dan Otomotif di Sekolah Menengah Kejuruan Wicaksono, Surya Adi; Kartika, Wahyu; Masrida, Reni Masrida; Hasaya, Haudi; Meilani, Sophia Shanti
Jurnal Sains Teknologi dalam Pemberdayaan Masyarakat Vol. 6 No. 2 (2025): Desember 2025
Publisher : Fakultas Teknik Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/2d5jhz64

Abstract

Hazardous and Toxic Waste (B3) is a significant contributor to environmental pollution and requires proper management in accordance with regulatory standards. In vocational education, particularly automotive programs at Vocational High Schools, workshop activities commonly generate B3 waste such as used oil, batteries, and chemical containers. To address this issue, the Environmental Engineering Study Program of Universitas Bhayangkara Jakarta Raya conducted a community service program at Panca Bhakti Banjarnegara focused on B3 waste management. The activity was carried out through presentations and a Focus Group Discussion (FGD), covering the identification, temporary storage, and further handling of B3 waste based on Ministry of Environment and Forestry Regulation No. 6 of 2021 and Government Regulation No. 22 of 2021. The results showed an increase in participants’ understanding regarding regulatory obligations, proper storage practices, and the importance of preventing environmental pollution at the school scale. In conclusion, this program effectively strengthened knowledge and awareness of environmentally responsible practices, while laying the foundation for ongoing collaboration between the school and university. The program is expected to support the development of environmentally conscious graduates who are prepared to manage B3 waste responsibly in future industrial or automotive workplace settings.
Pemanfaatan Lumpur Instalasi Pengolahan Air Minum sebagai Material Alternatif dalam Pembuatan Paving Block Meilani, Sophia Shanti; Kartika, Wahyu
Journal of Engineering Environtmental Energy and Science Vol. 5 No. 1 (2026): JANUARI 2026
Publisher : LPPMP Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/bb6jrv33

Abstract

Kebutuhan air bersih di perkotaan sebagian besar dipenuhi melalui pengolahan air sungai. Dari proses pengolahan tersebut terdapat hasil sampingan berupa lumpur yang dapat menimbulkan dampak negatif jika dibuang ke lingkungan. Penelitian ini bertujuan untuk mengevaluasi potensi pemanfaatan limbah lumpur dari instalasi pengolahan air minum (IPAM) sebagai bahan substitusi agregat halus pada pembuatan paving block. Lumpur IPAM dikeringkan terlebih dulu, diayak, kemudian dicampur dengan semen dan pasir dalam tiga variasi komposisi (15%, 25%, dan 35%). Setelah proses pengeringan selama 28 hari, sampel diuji kuat tekannya berdasarkan SNI 03-0691-1996. Hanya variasi 15% yang memenuhi standar mutu D dan dapat digunakan untuk area beban ringan seperti taman atau halaman, sedangkan variasi 25% dan 35% tidak memenuhi persyaratan. Hasil tersebut menunjukkan bahwa peningkatan kadar lumpur dalam paving block menyebabkan penurunan kuat tekan. Kelebihan lain dari pemanfaatan lumpur adalah menurunkan biaya produksi sekitar 5% dan mendukung prinsip ekonomi sirkuler.
Efektivitas Media Filter Karbon dan Pasir Silika untuk Filtrasi Air Sumur Bor Kartika, Wahyu; Masrida, Reni; Hasaya, Haudi; Abidin, Muhammad
Journal of Engineering Environtmental Energy and Science Vol. 5 No. 1 (2026): JANUARI 2026
Publisher : LPPMP Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/whysha39

Abstract

Air sumur bor banyak dimanfaatkan sebagai sumber air bersih, namun kualitasnya sering tidak memenuhi baku mutu akibat tingginya kekeruhan, zat terlarut, warna, serta kandungan logam. Penelitian ini bertujuan menganalisis kualitas air sumur bor sebelum dan sesudah filtrasi serta menilai efektivitas kombinasi media karbon aktif dan pasir silika di Perumahan Taman Bumyagara, Bekasi Timur. Penelitian dilakukan secara eksperimental dengan pengambilan sampel dari tiga titik sumur bor. Parameter yang dianalisis meliputi fisika (kekeruhan, TDS, TSS, dan warna) serta kimia (kesadahan dan kadar Fe). Proses filtrasi menggunakan sistem aliran ke bawah dengan media karbon aktif, pasir silika, dan kerikil. Hasil menunjukkan penurunan kekeruhan sebesar 95,21–97,02%, TDS 2,9–51,2%, TSS 82,35–88,24%, warna dan Fe masing-masing 100%. Sebagian besar parameter telah memenuhi baku mutu Permenkes No. 2 Tahun 2023, namun penurunan kesadahan masih rendah (2–16,87%). Kombinasi media filtrasi efektif meningkatkan kualitas air, meskipun diperlukan pengolahan lanjutan untuk menurunkan kesadahan.