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All Journal Jurnal Rekayasa Proses Jurnal Pendidikan Karakter Jurnal Kependidikan: Penelitian Inovasi Pembelajaran MAJALAH ILMIAH PEMBELAJARAN JPTK: Jurnal Pendidikan Teknologi dan Kejuruan INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni Rotasi METANA Mechatronics, Electrical Power, and Vehicular Technology JURNAL TEKNIK MESIN Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Bahan Alam Terbarukan Majalah Ilmiah MOMENTUM Jurnal Manajemen Dayasaing Jurnal Rekayasa Mesin Indonesian Journal of Guidance and Counseling: Theory and Application Jurnal Akuntansi dan Pajak Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Civil Engineering Journal CIVICUS : Pendidikan-Penelitian-Pengabdian Pendidikan Pancasila dan Kewarganegaraan Indonesia Journal of Halal Jurnal Rekayasa Proses Zawiyah: Jurnal Pemikiran Islam Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Jurnal Inovasi Teknik Kimia BERNAS: Jurnal Pengabdian Kepada Masyarakat Ilmu Pendidikan Equilibrium Journal of Chemical Engineering Jurnal Pendidikan Vokasi Otomotif International Journal of Business, Economics, and Social Development Jurnal Pengabdian dan Pengembangan Masyarakat Indonesia Surakarta Civil Engineering Review Journal of Governance and Social Policy JISIP UNJA (Jurnal Ilmu Sosial Ilmu Politik Universitas Jambi) IJLHE: International Journal of Language, Humanities, and Education Jurnal Profesi Insinyur Indonesia International Journal of Renewable Energy Development Jurnal Teknik Indonesia Dinamika Kerajinan dan Batik: Majalah Ilmiah
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Application of Environmentally Friendly Natural Dyes from Raja Banana Stems (Musa sapientum), Kepok Banana (Musa acuminata) and Thin Skin Banana (Musa acuminata red dacca) on Batik Fabrics Paryanto, Paryanto; Pranolo, Sunu Herwi; Fathika, Rahma N; Azizah, Rifo N; Wibowo, Angga Dwi
Dinamika Kerajinan dan Batik: Majalah Ilmiah Vol. 38 No. 2 (2021): DINAMIKA KERAJINAN DAN BATIK : MAJALAH ILMIAH
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Industri Kerajinan dan Batik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22322/dkb.v38i2.6263

Abstract

Banana trees that are used as producers of natural dyes are plantains, thin skin bananas, and kapok bananas. The purpose of this study was to apply natural coloring agents from various types of banana stems such as Raja Banana, Kepok Banana,and Thin Skin Banana with various natural color pigments. Making natural dyes with stems banana and water solvent in a ratio of 1: 5. Color locking on a fabric with several fixators. Fixers used are alum (Al2 (SO4) 3), tunjung (FeSO4) and lime (CaCO3). Fabrics that have optimal fastness to washing with Gray Scale are fabrics with alum fixers and lime with grades 4-5 (Good). Fabrics that have color fastness to washing (Staining Scale) which are fabrics with alum fixers and chalk with a value of 5 (Very Good). Fabrics that have resistance to dry and wet rubbing are fabrics with alum fixers and lime with grades 4-5 (Good). Dyes on the plantain stems are sharper compared to the banana stems and thin skin banana stems, with reflectance values (R%) of 74.29.
Characterization of Bed Agglomeration in Circulating Fluidized Bed Boilers: Influence of Coal Quality and Bed Material Interactions Cahyo, Nur; Triasdian, Yayak; Busairi, Achmad; Rahmanta, Mujammil Asdhiyoga; Paryanto, Paryanto; Fajar TK, Berkah
ROTASI Vol 27, No 3 (2025): VOLUME 27, NOMOR 3, OKTOBER 2025
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.27.3.22-29

Abstract

The utilization of coal in generating energy across the world is extremely popular due to its low cost. Otherwise, coal quality plays a significant role in other potential problems. Such an interaction between bed material and coal properties could lead to the formation of bed agglomeration, which melts in the CFB boiler of a power plant. The result shows that the majority of agglomeration samples were granular and dominated by round shapes, as observed visually. The EDX analysis shows that the three biggest elements in the agglomeration sample are oxygen, silica, and calcium. Meanwhile, XRD analysis reveals that the most reactive products were muscovite, albite, and dolomite compounds. They were composed of natrium in the range of 1.95–2.84%, silicon in the range of 20.2–21.16%, aluminium in the range of 13.05–15.46%, calcium in the range of 1.05–3.11%, and others. Therefore, several potential alternatives might be the best way to reduce the risk of agglomeration in a boiler. Including using additives like china clay and soils, especially those containing kaolin, and utilizing alternate bed materials. Another promising option to prevent this problem is to reduce the combustion temperature and replace bed material periodically.
Pemanfaatan Limbah Kulit Kopi Sebagai Energi dengan Menggunakan Teknologi Gasifikasi Downdraft Three-Stage Gasifier Mujiarto, Sigit; Paryanto, Paryanto; Susanty, Aries
Jurnal Profesi Insinyur Indonesia Vol 3, No 3 (2025): JPII:
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpii.2025.26870

Abstract

Indonesia memerlukan energi yang besar seiring pertumbuhan penduduk dan industri saat ini. Energi fosil yang digunakan secara besar-besaran mengakibatkan terjadinya emisi di lingkungan dan pemanasan global, sehingga diperlukan sumber energi yang baru dari energi alternatif yang ramah lingkungan untuk mengurangi tingginya emisi yang terjadi. Limbah kulit kopi di Indonesia juga mengalami peningkatan setiap tahunnya, dengan meningkatnya produksi setiap tahunnya menjadi produsen kopi terbesar ke-4 dunia. Tujuan dari penelitian ini adalah (i) mengatasi permasalahan energi dan (ii) mengatasi limbah kulit kopi dengan menjadikan limbah kulit kopi menjadi energi menggunakan teknologi gasifikasi downdraft menggunakan tiga tingkat laluan udara. Kulit kopi mula-mula yang sudah dikeringkan dengan ukuran 3-5 mm dimasukkan ke dalam gasifier, kemudian gasifier mulai dinyalakan sampai tercapai temperatur yang diinginkan dan keluar syngas-nya. Variasi yang dipakai adalah variasi air fuel ratio (AFR) 1,63;1,65; 1,67; 1,7. Hasil penelitian didapatkan bahwa LHV syngas tertinggi pada sampel AFR 1,65 dengan nilai 130,565 KJ/kg. Hasil ini bisa dipakai sebagai pangkalan data untuk pengembangan pemanfaatan limbah kulit kopi menjadi energi alternatif yang akan datang. Kata kunci: energi, kulit kopi, gasifikasi, downdraft, tiga tingkat laluan
Co-Authors Aan Ardian Abimanyu, Candra Ade Dwi Utama Adrian Nur AGUS PURWANTO Agus Purwanto Agus Widyianto Agustinus Dimas Krisna Adi Nugroho Ajeng L. Puspitaningrum Alim Harun Pamungkas Alqarni, Wais Aminatun, Tien Anang Rosihan Andhi Nur Rahmadi, Andhi Nur Andrian Riyadi Andrian Wisnu Dewangga Angga Dwi Wibowo Ardianto, Aan Ari Diana Susanti Ari Diana Susanti, Ari Diana Aries Susanty Arrozi, Wahyu Asnawi Asnawi Asri Widowati Azalia Kartika Suri, Azalia Kartika Azhari, Fadlan Azizah, Rifo N Baskoro, Catur Hilman Adritya Haryo Bhakti Baskoro, Sefrian Imam Berkah Fajar TK Busairi, Achmad Cornelius Satria Yudha Desy Sulistyowati, Desy Dewi, Kristina Ratna Dian Retnaningdyah, Dian Dwi Budi Santoso Dyah Kusuma Dewi Eko Riswanto, Eko Endang Kwartiningsih Endang Mastuti F, Nur Kholis Fadillah, Nuzulul Fathika, Rahma N Fauzia Rahmadita Febrianto Amri Ristadi Febrianto Amri Ristadi Felani, Muhamad Iqbal Fendri Ferdian Firdausy, Farah Mutia Firstandika, Leader Gito Sugiyanto Guterres, Natalino Fonseca D.S. Hanifa, Vina Hariana, Hariana Haryanto, Rifqi Hasnan Bachtiar Hermiyanto Hermiyanto Heru Mugiarso Ilham Roy Saputro, Ilham Roy Indrawan, Harry Intan Kusumawati Jati, Andika Seto Kuncoro Joga Dharma Setiawan Laela Khasanah, Isrofiah Lega, Michael Lely Hendarti Lutfiani, Rachmi Azizah M. Yogi Riyantama Isjoni Maghfi, Risya Ulayyar Mamok Suprapto Mansuri, Aly Syariati Margono Margono Maryova, Frieska Maulana, Andra Mochammad Ariyanto Mohammad Samsul Bakhri Mohammad Tauviqirrahman Monot Wicaksono Muhammad Fadilah Arsyad Muhammad Fardan Ibnu Aji Munadi Munadi Munyensanga, Patrick Muslim, Zulkifli Alif Nur Cahyo Nurcahyanti, Desy Nurwijayanti Orlanda Arya Hidayat Penny Rahmawaty Pranolo, Sunu Herwi Pratama, Rakha Rahmadani Prismantoko, Adi Putra, Raka Mancini Putro, Wibisono Handoko Rachmi Azizah Lutfiani Rafindra Trisna Rahmadi, Kristian Jati Rahmanta, Mujammil Asdhiyoga Raka Mancini Putra Ramadhan, Rifky Daffa Ratih Pujiastuti Ratri H. Hapsari Reto Ika Sundari, Reto Ika Ridwan Afandi Rivaldo Zamara Roni Permana Saputra Rossari, Meydiana RR Laksistya Rania Nur Prita Maira Rusnaldy Rusnaldy Rusnaldy Rusnaldy Sachrul Iswahyudi Saputra, Calvin Darma Saputra, Nandika Aji Sarfilianty Anggiani, Sarfilianty Sari Ayu Wulandari Setiawan, Muhammad Farouk SETYAWAN, YOGA Setyawati, Rosana Budi Sigit Mujiarto Simalango, Antonius Simon Dicky Surya Sanjaya Soleh, Mochamad Sudiyatno Sudiyatno Sugeng Riyanto Sukis, Muhamad Sulardjaka Sulardjaka Sumar Hadi Suryo Sunarso . Sunarso Sunarso Sunarta Supriyo Supriyo Surya, Rizqi Diaz Susilo Adi Widyanto Sutrisno AB, Joko Syamsul Mu’arif Subekhi Toriq, Sulthan Totok Apriyanto, Totok Triasdian, Yayak Trismianto, Devout Prakoso Wibowo, Angga Dwi Wijayanto, Ristyan Willy Arafah Willy Arafah, Willy WINARTO Wusana A. Wibowo Wusana Agung Wibowo, Wusana Agung Xander Salahudin Yoga Guntur Sampurno