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All Journal Jurnal Teknik Kimia USU Jurnal Teknik Kimia USU Jurnal Online Skripsi Manajemen Rekayasa Konstruksi (JOS-MRK)
Saputra, Richo
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Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Transportation

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Pengaruh Jumlah Sel Elektroda Terhadap Produksi Gas Hidrogen dengan Proses Elektrolisis sebagai Sumber Energi Fuel Cell Erlinawati; Mahesi, Trin Zikir; Saputra, Richo; Febriana, Ida; Effendy A, Sahrul
Jurnal Teknik Kimia USU Vol. 14 No. 1 (2025): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v14i1.18064

Abstract

Hydrogen is an environmentally friendly, carbon-free renewable energy source that can be generated through reactions with oxygen to produce electricity. One method of producing hydrogen is via water electrolysis. The aim of this study was to determine the optimal conditions for hydrogen gas production, specific energy consumption, and the use of hydrogen gas as an energy source for Proton Exchange Membrane (PEM) fuel cells, using potassium hydroxide (KOH) at concentrations of 0.1 M, 0.2 M, 0.3 M, and 0.4 M. The electrolysis process was conducted at a voltage of 10 volts for 30 minutes. The results showed that the highest hydrogen gas production, 0.8927 L, was achieved with 18 electrode cells and a KOH concentration of 0.3 M. The optimal specific energy consumption was 33,269 joules under the same conditions. The maximum efficiency of the PEM fuel cell was 47.25%, while the minimum efficiency was 44.80%
Pengaruh Jumlah Sel Elektroda Terhadap Produksi Gas Hidrogen dengan Proses Elektrolisis sebagai Sumber Energi Fuel Cell Erlinawati; Mahesi, Trin Zikir; Saputra, Richo; Febriana, Ida; Effendy A, Sahrul
Jurnal Teknik Kimia USU Vol. 14 No. 1 (2025): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v14i1.18064

Abstract

Hydrogen is an environmentally friendly, carbon-free renewable energy source that can be generated through reactions with oxygen to produce electricity. One method of producing hydrogen is via water electrolysis. The aim of this study was to determine the optimal conditions for hydrogen gas production, specific energy consumption, and the use of hydrogen gas as an energy source for Proton Exchange Membrane (PEM) fuel cells, using potassium hydroxide (KOH) at concentrations of 0.1 M, 0.2 M, 0.3 M, and 0.4 M. The electrolysis process was conducted at a voltage of 10 volts for 30 minutes. The results showed that the highest hydrogen gas production, 0.8927 L, was achieved with 18 electrode cells and a KOH concentration of 0.3 M. The optimal specific energy consumption was 33,269 joules under the same conditions. The maximum efficiency of the PEM fuel cell was 47.25%, while the minimum efficiency was 44.80%
ANALISIS KUAT TEKAN BETON SELF-COMPACTING CONCRETE DENGAN ADIMIXTURE VISCOCRETE 3115N Saputra, Richo; Qomariah; Sugeng Riyanto
Jurnal Online Skripsi Manajemen Rekayasa Konstruksi (JOS-MRK) Vol. 3 No. 4 (2022): DESEMBER 2022
Publisher : Jurusan Teknik Sipil Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Berkembangnya konstruksi dalam kehidupan sehari-hari mengalami kemajuan yang sangat pesat terutama ditinjau dari segi mutu beton pada konstruksi bangunan, Penelitian ini bertujuan untuk mengetahui perilaku dari sifat fisik komposisi adimixture ViscoCrete 3115N terhadap beton Self Compacting Concrete (SCC) dan demi terwujudnya dari penelitian ini peneliti menggunakan metode penelitian trial error. Penelitian Analisis Kuat Tekan Beton Self-Compacting Concrete Dengan Adimixture ViscoCrete 3115N bertujuan untuk mencari presentase superplasticizer ViscoCrete 3115-N untuk beton SCC mutu tinggi dengan metode tiral error, mencari nilai beton segar Slump-flow, V-Funnel, dan L-Box untuk beton SCC menggunakan ViscoCrete 3115-N, mencari hasil kuat tekan beton keras SCC menggunakan ViscoCrete 3115-N pada hari ke 7, 14, 21 ,dan 28, mencari biaya untuk beton SCC dengan menggunakan campuran ViscoCrete 3115-N. Untuk menganalisis tersebut membutuhkan pengujian di laboratorium. Hasil penelitian ini didapatkan komposisi yang tepat untuk beton SCC mengunakan ViscoCrete 3115N sebesar 1.5% dari berat semen, hasil dari Slump-Flow mix design no.6 sebesar 60,5 cm, V-Funnel dengan waktu 5,28 detik, nilai rasio L-Box 82,71% dan mix design no.7 dengan diameter Slump-Flow 60cm, V-Funnel dengan waktu 5,16 detik, nilai rasio L-Box 90,28%. Pada hasil pengujian kuat tekan beton SCC menggunakan ViscoCrete 3115N mengalami kenaikan kuat tekan beton rata-rata benda uji mix design no.6 dengan umur 7 hari diperoleh kuat tekan sebesar 23,02 MPa, umur 14 hari sebesar 25,98 Mpa, umur 21 hari sebesar 32,29 Mpa, umur 28 hari sebesar 41,24Mpa untuk mix design no.6 mencapai mutu rencana 40Mpa di hari ke 28. Sedangkan mix design no.7 umur 7 hari sebesar 23,28 MPa, umur 14 hari sebesar 25,58 Mpa, umur 21 hari sebesar 26,69 Mpa, umur 28 hari sebesar 30,11Mpa untuk mix design no.7 mutu yang direncanakan tidak tercapai dan memperoleh kuat tekan tertinggi sebesar 35,10 di hari ke 28. Pembuatan beton SCC mengunakan ViscoCrete pada mix design no.6 dan mix design no.7 didapatkan selisih harga sebesar Rp. 16,263.00.
Co-Authors Effendy A, Sahrul Erlinawati Febriana, Ida Mahesi, Trin Zikir Qomariah Sugeng Riyanto