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All Journal Jurnal Riset Kimia Cendekia : Jurnal Pengabdian Masyarakat International Journal of Marine Engineering Innovation and Research
Mochammad Purwanto
Departement Of Chemical Engineering, Institut Teknologi Kalimantan, East Kalimantan
Humanities Automotive Engineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation

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Fabrication and Characterization of Chitosan/N-Phthaloyl Composite Membrane for DMFC Application Christine Dyta Nugraeni; Lukman Atmaja; Nur Hayati; Mochammad Purwanto; Mardi Santoso; Yuli Kusumawati
Jurnal Riset Kimia Vol. 12 No. 2 (2021): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v12i2.408

Abstract

Modified chitosan membrane is one of the promising membranes for polymer electrolyte membrane. Chitosan/N-phthaloyl chitosan composite membranes were fabricated to obtain high proton conductivity and low methanol permeability. Membranes were fabricated by casting method and solvent evaporation. Surface morphology, mechanical analysis, methanol permeability, and proton conductivity were used to characterize the overall properties. FT-IR spectra exhibited the presence of interaction of chitosan and n-phthaloyl/chitosan. SEM analysis showed that the surface roughness of composite membrane increases as the n-phthaloyl loading increases. The highest proton conductivity of synthesized membrane is at 2.4 mS.cm-1 and is higher than pristine chitosan membrane at 1.6 mS.cm-1. Moreover, with n-phthaloyl/chitosan addition, the methanol permeability was also improved. The correlation between proton conductivity and methanol permeability in composite membranes suggests that the blend has its potential in DMFC application.
Peningkatan Kualitas Pembelajaran Kimia melalui Praktikum Titrasi di SMA Negeri 5 Balikpapan Ashadi Sasongko; Sri Sulastri; Adrian Gunawan; Moch Purwanto
Cendekia : Jurnal Pengabdian Masyarakat Vol 2 No 2 (2020): Desember
Publisher : LPPM UNIVERSITAS ISLAM KADIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (535.339 KB) | DOI: 10.32503/cendekia.v2i2.891

Abstract

Ketersediaan laboratorium kimia di SMA sangat diperlukan untuk meningkatkan kualitas pembelajaran melalui metode praktikum. Kecukupan jumlah guru dan laboran juga sangat mempengaruhi kelancaran pelaksanaan praktikum. SMA Negeri 5 Balikpapan merupakan salah satu SMA ternama yang memiliki alat dan bahan praktikum kimia cukup memadai, namun sempat mengalami kekosongan kegiatan praktikum. Tim dosen dan mahasiswa Prodi Teknik Kimia Institut Teknologi Kalimantan (ITK) melakukan identifikasi untuk mengetahui alat dan bahan yang dapat digunakan. Hasil identifikasi menunjukkan bahwa alat dan bahan yang ada memadai untuk berbagai materi praktikum kimia, termasuk praktikum titrasi asam basa, yang termasuk materi sulit dalam ilmu kimia. Modul praktikum disiapkan untuk menjadi acuan bagi siswa. Pre-test dan post-test digunakan untuk mengetahui dampak pelaksanaan praktikum titrasi. Praktikum titrasi menunjukkan dampak yang signifikan dalam mengoptimalkan pemanfaatan laboratorium kimia dan meningkatkan pemahaman siswa terhadap titrasi asam basa.
Biodiesel Production from POME (Palm Oil Mill Effluent) and Effects on Diesel Engine Perfor-mance Suardi; Moch Purwanto; Aung Ye Kyaw; Wira Setiawan; Muhammad Uswah Pawara; Alfawan
International Journal of Marine Engineering Innovation and Research Vol. 7 No. 4 (2022)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v7i4.5558

Abstract

One way to reduce the scarcity of fuel oil is to make environmentally friendly alternative fuels such as biodiesel. The utilization of biodiesel can be a new energy source and also help reduce the excessive use of fuel, especially diesel and diesel oil in Indonesia. In Indonesia, the amount of palm oil will reach 49.7 tons by 2021, and this data is up 2.9% from the pre-vious year. Palm fruit is processed into CPO. More palm oil processing will produce waste called POME (Palm Oil Mill Effluent). The diesel engine transesterification method is suitable for the manufacture of biodiesel. The amount of base on the catalyst's surface affects the catalyst's activity. So that the higher the base value on the catalyst, the higher the yield of biodiesel that will be produced. The biodiesel produced will be tested on a 4-stroke diesel engine with a B5 and B10 blending composition. The study's results showed that the density and viscosity values for B5 were 5.8 cSt and 810 Kg/m3 and for B10 were 6.3 cSt and 860 Kg/m3. As for engine performance, power, torque, and SFC for B5 fuel at 4000-watt load conditions and 1000 Rpm, engine speeds are 1.18 Kw, 11.28 Nm, and 256.8 gr/Kw. B10 at 4000-watt load condition and 1000 Rpm engine speed is 1.16 Kw, 11.12 Nm, and 269.2 gr/Kw.
Co-Authors Adrian Gunawan Alfawan Ashadi Sasongko Aung Ye Kyaw Lukman Atmaja M. Uswah Pawara Mardi Santoso Nugraeni, Christine Dyta Nur Hayati Sri Sulastri Suardi Suardi Wira Setiawan Yuli Kusumawati