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All Journal Abdimas Jurnal Bahan Alam Terbarukan Indigenous: Jurnal Ilmiah Psikologi Jurnal ORTOPEDAGOGIA Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Reswara: Jurnal Pengabdian Kepada Masyarakat Distilat: Jurnal Teknologi Separasi International Journal of Social Service and Research Jurnal Aplikasi Pelayaran dan Kepelabuhanan Jurnal Teknik Kimia dan Lingkungan Jurnal Mahasiswa Entrepreneur
Hardjono Hardjono, Hardjono
Fakultas Ilmu Pendidikan, Universitas Negeri Semarang
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Nursing Social Sciences Transportation

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PERANCANGAN TANGKI PENCUCIAN PEMURNIAN K₂SO₄ PADA PRARANCANGAN PABRIK K₂SO₄ DARI PENGOLAHAN SENYAWA SULFAT PADA AIR SUNGAI KALIPAIT BONDOWOSO Robbany, Muhammad Dusturuddin; Hardjono, Hardjono
DISTILAT: Jurnal Teknologi Separasi Vol. 11 No. 4 (2025): December 2025
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/distilat.v11i4.7220

Abstract

Sungai Kalipait di Banyuwangi mengandung senyawa asam sulfat alami yang berpotensi dimanfaatkan sebagai bahan baku untuk sintesis kalium sulfat (K₂SO₄). Namun, proses reaksi menghasilkan campuran garam seperti KCl dan NaCl yang menurunkan kemurnian produk. Untuk meningkatkan kemurnian K₂SO₄, dilakukan pemisahan berbasis kelarutan diferensial dalam metanol melalui proses pencucian. Penelitian ini bertujuan merancang tangki pencucian berbasis metanol yang sesuai untuk proses pemurnian tersebut. Perancangan dilakukan secara sistematis menggunakan pendekatan mekanikal dan termodinamika, serta mengacu pada standar American Society of Mechanical Engineers – Boiler and Pressure Vessel Code dan American Petroleum Institute. Hasil desain menunjukkan bahwa tangki memiliki diameter total 75,32 inci dan tinggi silinder 31,49 inci, dengan tutup atas dan bawah berbentuk ellipsodial. Tangki dilengkapi sistem agitasi tipe turbin enam bilah dengan panjang bilah 180 mm dan kebutuhan daya pengaduk sebesar 2,54 HP. Selain itu, disertakan empat nozzel fungsional untuk pemasukan, pengeluaran, ventilasi, dan pengamatan. Evaluasi kekuatan struktur menunjukkan bahwa ketebalan dinding dan sambungan telah memenuhi kriteria keselamatan operasi pada tekanan atmosferik. Dengan demikian, tangki pencucian ini layak diimplementasikan untuk proses pemurnian K₂SO₄ berbasis metanol.
PENGARUH KUALITAS PRODUK, FITUR PRODUK, DESAIN PRODUK TERHADAP MINAT BELI KONSUMEN PADA CENTRO MEUBEL DI KABUPATEN SITUBONDO Faizi, Moh; Hardjono, Hardjono; Pramesthi, Riska Ayu
Jurnal Mahasiswa Entrepreneurship (JME) Vol 5 No 1 (2026): JANUARI 2026
Publisher : Fakultas Ekonomi dan Bisnis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36841/jme.v5i1.8114

Abstract

This study aims (1) to determine the partial effect of product quality, product features and product design on consumer buying interest (2) to determine the simultaneous effect of product quality, product features and product design on consumer purchase interest (3) to determine product quality. , product features and product design that have a dominant effect on consumer buying interest. The data obtained were analyzed using statistical formulas, namely by using multiple linear regression analysis, t test, F test, and coefficient of determination. The results of the study were multiple linear regression equation Y = 3.651E-17 + 0.020X1 + 0.007X2 + 0.955X3 + 0.031 . The result of t test for product quality variable t count 3.551> t table 1.986, product feature variable t count 2.205> t table 1.986, product design variable t count 30.520> t table 1.986 so it can be concluded that product quality, product features and product design partially influence (Y). The value of Fcount> Ftable, 313.776> 2.70, so it can be concluded that product quality, product features and product design simultaneously influence consumer purchase interest. The dominant test for the product design variable is 30.520, which is said to be the most dominant.s 30.520, which is said to be the most dominant.
Co-Authors Agustina, Laelatus Syifa Sari Anggrianto, Arfenna Rizki Aprilia, Dila Ari Susanti Ariani Ariani Arif Rahman Hakim Arini Esti Astuti, Arini Esti Aryatama , Farhan Dewi, Ernia Novika Dita Ayu Permatasari, Dita Ayu Eko Naryono Faizi, Moh Fajaria, Annisa Nuris Fariha, Gian Faris Febriani, Nahdiyah Nur Firdaus, Muhammad Alfin Firnanda, Yeni Anggi Huda Gafiera, Illiya N Gayatri, Bintang Febrina Hadi Saroso Harmanto Harmanto Haryono Haryono Hersudin, Hersudin Hidayat, Nur Fajar Iswara, Mochammad Agung Indra Luchis Rubianto Lusiani, Cucuk Evi Mareta, Heppy Ria Muzakki, Fa'iza Putri Nadhziroh, Khoiriana Jesnita Narti Narti, Narti Nelson Simanjuntak Nugraha, Dwi Rendy Arya Nugroho, Khoirunnisa S. Nurismasari, Shilma Ananta Nurlaila, Istiqomah Hanifa Octavia, Amalia Dwi Pieris, John Pradita, Naufal ‘Azmi Pramesthi, Riska Ayu Prasetyo, Bowo Pujo Pratika, Alifia Rian Prayitno Prayitno Profiyanti Hermien Suharti Putra, Eno Budhi Triadmaja Ramadhan, Ednin Syahrul Ramadhan, Kautsar Luthfian Ramadhany, Roshana Lailia Retnaningtyas, Herawati Robbany, Muhammad Dusturuddin Rofiq, Mohammad Ainur Romadhon, Marsanda Sahila Sahari, Bintan Aulia Sabrina Larasati Setiawan, Muhammad Ebin Setiono, Benny Agus Shabrina Adani Putri, Shabrina Adani Shabrina, Rezka Wilda Siahaan, Chontina Sigit Hadiantoro, Sigit Sri Rulianah, Sri Sri Sulistyorini, Sri Sudarminto, Hadi Priya Supratiwi, Mahardika Swetachattra, Fara P Swetachattra, Fara P. Uthami, Ersa Wahyu Vivi Alvionita Sari, Vivi Alvionita Widyanto, Yugata Gama Yuyarti Yuyarti, Yuyarti