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Dwi Irawan
Universitas Muhammadiyah Malang
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ANALISA PIPA ALUR SPIRAL PADA ALAT PENYULING BIOETANOL Didi Setiawan; Dwi Irawan
TURBO [Tulisan Riset Berbasis Online] Vol 1 No 2 (2012): Desember 2012
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v1i2.654

Abstract

Penyulinganadalahsuatumetodepemisahanbahankimiaberdasarkanperbedaantitikdidihuapnyasehinggazat yang memilikititikdidih paling rendahakanmenguapterlebihdahulu.Pada penyuling terdapat proses wede168 pertukaran kalor dimana pertukaran kalor ini dapat mempengaruhi hasil bioetanol yang dihasilkan. Pada proses penyulingandalampenelitianinialur yang dibuatadalahalur spiral, penyulingan ini dibuat dalam skala laboraturium. Penelitian ini bertujuan untuk mengetahui berapa banyak bioetanol yang dihasilkan dan berapa efisiensi penyulingan bioetanol.Hasil dari penelitian ini mendapatkan bioetanol sebanyak 4,55 liter, banyak kalor yang dibutuhkan untuk perebusan 7158,75 kJ, banyaknyakalor yang harusdidinginkan1146,6kJ, banyaknyakalor yang diserapoleh air 1024,8 kJ, efisiesitermal 89,38 %, efisiensipenyulingan 13,18%, lajupenyulinganbioetanol 0,24 liter/jam.Abstrak : Kata kunci: penyulingan, alurspiral, bioetanol.
Enhancing pyrolysis oil yield and quality via low-temperature catalytic pyrolysis of PET waste over activated carbon derived from euxideroxylon zwageri Yani, Ahmad; Wijayanti, Widya; Sasongko, Mega Nur; Wahyudi, Slamet; Irawan, Dwi
Mechanical Engineering for Society and Industry Vol. 6 No. 2 (2026): Issue in Progress
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.16415

Abstract

This study evaluates the low-temperature pyrolysis of post-consumer polyethylene terephthalate (PET) from room temperature to 350 °C using biomass-derived activated carbon from Euxideroxylon zwageri (EZAC) as a renewable catalyst/adsorbent. PET–EZAC blends (100:0, 95:5, 90:10, 85:15, and 80:20; total feed 500 g) were processed in a fixed-bed reactor under an inert atmosphere. EZAC significantly shifted product distribution and exhibited an optimum at PET:EZAC = 90:10 (w/w), which produced the maximum oil yield of 543 mL (404 g; 80.8 wt%) and exceeded the oil yield from non-catalytic PET pyrolysis. Under this optimum condition, fuel-relevant properties improved, yielding an research octane number (RON) of 97 and a higher heating value (HHV) of 47.88 MJ/kg; the flash point and kinematic viscosity decreased to 13 °C and 2.384 cSt, respectively, while density remained nearly constant (0.772 g/mL). GC–MS results showed the most gasoline-like composition at PET:EZAC = 90:10, dominated by the C7–C10 fraction (62.95%) with a balanced hydrocarbon-class distribution (Alkanes 64.64%, Olefin 27.61%, and Aromatics 7.75%). MQ sensor-based gas profiles further suggested that EZAC accelerated the onset of H₂ and CH₄ formation, with peak sensor responses of 745 ppm for H₂ and 871 ppm for CH₄ at 20% EZAC. Overall, EZAC is a promising renewable material for steering secondary reactions during low-temperature PET pyrolysis, thereby improving both oil yield and oil quality.
Co-Authors Adi Prasetyo Agnesia Ruli Ayu Rahmawati Agung, I Gusti Agung Ngurah Agus Eko Purnomo Agus Eko Purnomo Agus Irawan Agustin, Tyna Kurniati Noer Ahmad Juanda Ahmad Khudori, Ahmad Ahmad Yani Andika, Wazri Himawansyah Putra Andriyansyah, Nopri Aniek Iriany Arlita Ariyani Puspitasari Aviani Widyastuti Aziza, Nabila Nurul Bambang Eka Purnama Dhaniel Syam Didi Setiawan Elfirawati, Putri Arwen Elvin Bastian Farid Hendro Wibowo Faris Afrizal Fauziah, Shinta Nur Furisanda, Muhammad Ferdian Hafiez Sofyani Harnyoto, Harnyoto Ida Ayu Putu Sri Widnyani Ihyaul Ulum Imam Abu Hanifah Indah Uly Wardati Iqbal Ramadhani Fuadiputra Jayadih, Epan Kemas Ridhuan Lia Candra Inata Lutfia Fitroh Insani M. Zul Mazwan Mahanani, Qory Satiti Mega Nur Sasongko Mudrifah, Mudrifah Muhammad Iman Hidayat, Muhammad Iman Muhammad Wildan Affan Nova Khoirul Anam Nuha, Sukma Uli Nur Afifah Nurazizah, Siti Fadhillah Nurfadilah Yusri Nurfitriani, Rizka Pangestu, Angga Pranacitra, Resi prastiyo, Adi Prastyo, Yudi Puja, Puteri Amelia Puspitasari, Fransiska Dwi Ratna Putri, Nur Alia Rafida Az-Zahra Rangga Sukma Hariadi, Dedid Rani, Andini Esa Dewi Rayis, Dzulhijah Alkayyis Rizka Amalia Rusmadi, Anindya Tirsa Saud, Iham Maulana Setiawan, Rahmady Setu Setyawan Simbolon, Masuradi Siti Fadhillah Nurazizah Siti Zubaidah Siti Zubaidah Slamet Wahyudi Sri Wahyuni Suardi Sukadi . Sukma Uli Nuha Sulis Dri Handono Susilo, Efendi Joko Syarif Husen Tasyahadul Fadlatil Laili Tasyahadul Fadlatil Laili Teguh Santoso Toto Suharjanto Toto Suharjanto Tri Wahyu Oktavendi Tri Wahyu Oktavendi Ulfa Safira Iman Niar Untung Surya Dharma Wicaksono, Agung Prasetyo Nugroho Widya Wijayanti yanto, Repki Yusi Putri Eka Vianti