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All Journal Journal of Applied Sciences, Management and Engineering Technology (JASMET) Jurnal Teknologi dan Manajemen Prosiding Seminar Nasional Teknologi Industri Berkelanjutan
Ayu Setyaning Sayekti Poesoko
Institut Teknologi Adhi Tama Surabaya
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Proses Manufaktur Alat Pelebur Plastik Dan Pencetak Paving Block Berbahahan Dasar Sampah Plastik Berbasis Sistem Pneumatik Dengan Pemanas Listrik Arief Prasetio Nugroho; Hery Irawan; Ayu Setyaning Sayekti Poesoko; Dias Saputra; Dani Fitriyanto; Mochammad Zadith Taqwa
Prosiding SENASTITAN: Seminar Nasional Teknologi Industri Berkelanjutan Prosiding SENASTITAN Vol. 03 2023
Publisher : Institut Teknologi Adhi Tama Surabaya

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Abstract

Pada mulanya masyarakat kurang akan pengetahuan betapa banyaknya sampah plastik yang ada di dunia ini yang tidak bisa terurai secara alami dan sangat berbahaya bagi lingkungan hidup jika sampah plastik tidak dikelola dengan baik. Maka dari itu dibuat alat pengolahan sampah plastik yang berfungsi sebagai pelebur dan pencetak paving block. Alat ini memiliki 3 bagian utama yaitu, tungku peleburan, pemanas, dan pengepresan yang dapat mempermudah dan lebih efisien dalam pembuatan paving block berbahan dasar sampah plastik. Komponen dalam pembuatan alat ini juga sangat mudah di jumpai dan mudah dioperasikan oleh siapapun dengan sistem penggunaan yang dapat dibilang tidak terlalu rumit. Proses manufaktur alat ini meliputi persiapan material dan proses pemesinan (pemotongan,pengelasan,pembubutan,drilling,dan pengecatan). Setelah alat jadi dilakukan perhitungan Harga Pokok Produksi (HPP) dan perhitungan waktu produksi.kemudian dilakukan uji coba alat sampai menghasilkan paving block.Berdasarkan hasil perhitungan didapatkan harga pokok produksi (HPP) senilai Rp. 7.462.055, dan waktu proses produksi total 11,6 jam. Sedangkan hasil pengujian tekan paving mencapai beban 49 KN dengan kuat tekan sebesar 2,99 Mpa.
Analysis of Ambient Air Quality of Carbon Monoxide in Parking Areas (Case Study of Type B and Type C Hospitals in Surabaya City) Pratama Sandi Alala; Dandi Dwi Arifianto; Ayu Setyaning Sayekti Poesoko
Jurnal Teknologi dan Manajemen Vol 5, No 2 (2024): July
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat ITATS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jtm.2024.v5i2.6035

Abstract

The human respiratory system is vulnerable to the impacts of carbon monoxide (CO) emissions, a colorless and odorless gas. The aim of this research is to analyze the CO levels in the air and its relation to regulations governing air quality, specifically referring to Government Regulation Number 22 of 2021. This study also discusses the correlation between CO levels with air temperature and the number of motor vehicles. Measurements were conducted using a CO meter, and manual counting of motor vehicles was included as part of the purposive sampling procedure over a period of 3 days. On Saturdays, the average CO concentration was at its highest point, ranging from 64.131 μg/m3 in the morning to 52.106 μg/m3 in the afternoon and 37.791 μg/m3 in the evening. The average temperatures recorded were 31°C in the morning, 32°C in the afternoon, and 30°C in the evening. There was an increase in CO levels at Hospital X exceeding the permissible limit stated in Government Regulation Number 22 of 2021. Regarding air quality at Hospital Y, CO concentrations were 33.210 μg/m3 in the morning, 11.451 μg/m3 in the afternoon, and 29.775 μg/m3 on Monday afternoon, all of which were above normal levels. With a value of α of 0.000, which is less than 0.01 according to Pearson correlation test, a significant relationship between temperature and CO levels was revealed, with a Pearson correlation coefficient (r) of -0.917. There is a perfect negative correlation between these two variables. To determine the presence of a relationship between the number of motor vehicles and CO concentration, the Pearson correlation test yielded a significant result with a value of α of 0.048 and an r value of 0.670. The correlation between the two variables is evident. 
Analysis of Tawangsari River Water Quality Using the Pollution Index Method in Sidoarjo Regency, Indonesia, during the 2024 Observation Period Pratama Sandi Alala; Cahya Bagus Syah; Ayu Setyaning Sayekti Poesoko
Journal of Applied Sciences, Management and Engineering Technology Vol 7, No 1 (2026)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2026.v7i1.8645

Abstract

River water quality analysis is a fundamental component of environmental management, particularly for rivers with the potential to serve as raw water sources. The Tawangsari River is influenced by domestic activities and surrounding land use, which may contribute to gradual water quality degradation. This study aims to assess the water quality status of the Tawangsari River using the Pollution Index (PI) method. Water samples were collected at three monitoring points representing upstream, middle, and downstream river segments. Key water quality parameters analyzed included pH, turbidity, Total Dissolved Solids (TDS), Total Suspended Solids (TSS), Dissolved Oxygen (DO), Biological Oxygen Demand (BOD), and Chemical Oxygen Demand (COD). The results indicate that the Pollution Index values classify the Tawangsari River as lightly polluted to moderately polluted, with the highest PI value observed at the middle segment of the river. Among the evaluated parameters, dissolved oxygen was identified as the dominant factor influencing the Pollution Index values. It should be noted that the assessment was conducted using a limited number of monitoring points within a single observation period. Despite these limitations, the findings provide a reliable overview of the current water quality status of the Tawangsari River and demonstrate the applicability of the Pollution Index method as a practical tool for river water quality assessment and management planning. Keywords: pollution index; river water quality; dissolved oxygen; environmental monitoring; water quality status
Co-Authors Arief Prasetio Nugroho Cahya Bagus Syah Dandi Dwi Arifianto Dani Fitriyanto Dias Saputra Hery Irawan, Hery Mochammad Zadith Taqwa Pratama Sandi Alala