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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Komunikasi Fisika Indonesia Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Jurnal Sains Matematika dan Statistika JATI UNIK : Jurnal Ilmiah Teknik dan Manajemen Industri Seminar Nasional Teknologi Informasi Komunikasi dan Industri Communications in Science and Technology INTECOMS: Journal of Information Technology and Computer Science Matrik : Jurnal Manajemen dan Teknik Industri Produksi Jurnal Surya Teknika Journal of Applied Materials and Technology Indonesian Journal of Industrial Engineering & Management Newton-Maxwell Journal of Physics IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Jurnal Perangkat Lunak

Rika Taslim

Unknown Affiliation

Author-ID : 401860

Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics

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PEMANFAATAN AMPAS SAGU SEBAGAI ELEKTRODA KARBON SUPERKAPASITOR Andika Afrianda; Erman Taer; Rika Taslim
Komunikasi Fisika Indonesia Vol 14, No 2 (2017)
Publisher : Universitas Riau

Penelitian pembuatan karbon aktif berbasis sagu sebagai elektroda superkapasitor telah berhasil dilakukan. Tahap pertama produksi karbon aktif dimulai dengan mengeringkan limbah ampas sagu dibawah sinar matahari dan dilanjutkan dengan pengeringan oven, prakarbonisasi, penggilingan, pengayakan, aktivasi kimia dengan larutan KOH konsentrasi 0,2 M, pencetakan pelet, karbonisasi pada 600 °C diikuti aktivasi fisika pada suhu 850 °C dan pemolesan pelet. Sampel yang dikeringkan dalam oven dilakukan pada suhu 110 °C dan prakarbonisasi dilakukan pada suhu 100 °C sampai 250 °C selama 2 jam. Sampel digiling dengan menggunakan penggilingan mortar dan ball milling. Aktivator 0,2 M KOH digunakan untuk meningkatkan luas permukaan elektroda. Aktivasi fisika menggunakan H2O selama 1,5 jam. Karakterisasi sifat fisis dilakukan dengan pengukuran densitas, stabilitas termal (TGA) dan SEM dan sifat elektrokimia dilakukan dengan metode voltametri siklik dengan variasi scan rate 1, 2 dan 5 mV/s. Hasil kapasitansi spesifik optimum karbon aktif berbasis sagu untuk superkapasitor ditemukan pada scan rate 1 mV/s sebesar 74,85 F/g.

SEL SURYA FOTOELEKTROKIMIA DENGAN MENGGUNAKAN NANOPARTIKEL PLATINUM SEBAGAI ELEKTRODA COUNTER GROWTH Iwantono '; Erman Taer; Rika Taslim; Lutfi Rindang Lestari
Komunikasi Fisika Indonesia Vol 11, No 8 (2014)
Publisher : Universitas Riau

Telah dilakukan fabrikasi dan pengukuran sel surya fotoelektrokimia dengan menggunakan nanopartikel platinumpada elektroda counter. Nanopartikel platinum ditumbuhkan di atas permukaan substrat padat (ITO) dengan metodein-situ growth (penumbuhan langsung) pada suhu 50 °C dengan variasi penumbuhan berulang (1 lapisan, 2 lapisan,dan 3 lapisan). Sel surya dibentuk seperti susunan sandwich yang menghubungkan antara elektroda counter(nanopartikel platinum) dan elektroda kerja (nanopartikel ZnO), dengan elektroda kerja diberi perlakuan variasikonsentrasi dan penambahan amoniak. Nanopartikel platinum tumbuh yang memberikan respon baik pada uji seladalah pada penumbuhan 1 lapisan. Hasil pengujian sel di bawah pencahayaan lampu halogen 100 watt, daerah aktifsel 1 cm x 1 cm memperlihatkan karakteristik I-V dengan parameter keluaran, tegangan rangkaian terbuka (V oc ) 274mV, arus rangkaian pendek (I sc ) 0,21 mA, fill factor (FF) 0,96 (96%), daya maksimum (Pmax) 0,056 mW untukvariasi konsentrasi. Sedangkan untuk variasi penambahan amoniak menghasilkan output tegangan rangkaian terbuka(V oc ) 119 mV, arus rangkaian pendek (I sc ) 0,1225 mA, fill factor (FF) 0,76 (76%), daya maksimum (P max ) 0,011 mW.

Trace Matriks 3 x 3 Berpangkat Bilangan Bulat Fitri Aryani; Rika Taslim
Jurnal Sains Matematika dan Statistika Vol 7, No 1 (2021): JSMS Januari 2021
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/jsms.v7i1.12434

Artikel ini membahas mengenai trace matriks berpangkat. Tepatnya trace matriks 3x3berbentuk khusus berpangkat bilangan bulat positif. Mendapatkan nilai trace matriksberpangkat tersebut, maka harus didapatkan terlebih dahulu bentuk umumperpangkatan dari matriks 3x3 berbentuk khusus ini. Bentuk umum perpangkatanmatriks 3x3 yang berbentuk khusus diperoleh dengan memulai memangkatkanmatriks dari sampai , selanjutnya dapat dugaan bentuk umumnya danterakhir dibuktikan dengan induksi matematika. Dan nilai trace matriks 3x3berpangkat bilangan bulat positif diperoleh dari bentuk umum perpangkatanmatriksnya dengan menggunakan definisi trace matriks.

PEMBUATAN DAN KARAKTERISASI KOMPOSIT KARBON ZnO NANOSTRUKTUR MENGGUNAKAN METODE DIP-COATING Wetya Fatma Kumala Sari; Erman Taer; Rika Taslim
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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

The performance of activated carbon monoliths from rubber wood has been enhanced by modifying the surface through the addition of Zinc Oxide (ZnO) bydip coating method with immersion 30 minutes. The sample activated by combination of physical-chemical activation were named as E F and Carbon sample that had been grown nanoparticle ZnO were name as EK F. The physical properties, density crystalline, surface morphology and content element of the sample have been tested and analyzed. Density of E F was obtained 0,379 g.cm-3 and density value for sample EK F was obtained 0,390 g.cm-3. The measurement of Scanning Electron Microscope (SEM) showed the nanoparticle ZnO, and measurement of Energy Dispersive X-Ray (EDX) determines the atomic percentage of the element zinc, i.e 5,80%. Measurement of X-Ray Diffraction(XRD) showed the peaks of composite carbon electrode occurred at 2θ of 22,880 and 44,480 due to presence of carbon structure with their crystal orientation of (002) and (001). Electrochemical properties for carbon electrode cell and composite electrode carbon with the addition zinc oxide (ZnO) were analyzed using cyclic voltammetry. For carbon electrode without nanoparticle ZnO has specific capacitance of 53,90 F.g-1 and the specific capacitance for composite carbon electrode with immersing 30 minutes is 63,53 F.g-1. The result of the overall study showed that the modification carbon electrode with addition ofnanoparticle ZnO increased the values of specific capacitance electrode carbon for supercapacitor applications.

SINTESIS KARBON BERPORI BERBASIS DAUN JERUK NIPIS (Citrus Aurentifolia S.) SEBAGAI MATERIAL ELEKTRODA UNTUK APLIKASI SUPERKAPASITOR Erman Taer; Melda Riyani Butet; Apriwandi Apriwandi; Rika Taslim
Komunikasi Fisika Indonesia Vol 20, No 1 (2023)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.1.9-18

In this study, the electrode material was successfully made from activated carbon based on lime leaf biomass with variations in physical activation temperature of 800 ˚C, 850 ˚C, and 900 ˚C for supercapacitor applications. Porous carbon was synthesized through pre-carbonization steps, chemical activation using ZnCl2 activator, carbonization using N2 gas at a temperature of 600 ˚C, and physical activation using CO2. Density analysis confirmed the potential for the DJN-850 sample to have a high shrinkage of 52.24%. X-ray diffraction shows an amorphous structure of carbon characterized by broading peaks at 2θ=22° and 24°. Scanning electron microscopy analysis performed that the optimized sample possessed rich meso-,macropores followed by a high carbon content of 90.25%. The Fourier spectroscopic transformation test results identified the presence of functional groups O-H, C-O, C-H, C=C, and C≡C in the sample. The precursor activated at 850 C possessed a specific surface area of 675.129 m2 g-1 with adjusting micro-mesopore. Furthermore, the electrochemical properties of the samples were measured using cyclic voltammetry and galvanostatic charge-discharge with specific capacitances of 144.14 F g-1 and 189 F g-1, respectively.. Keywords: biomass precursor; Citrus aurentifolia S., carbon porous, electrode material, supercapacitor

Three-dimensional pore structure of activated carbon monolithic derived from hierarchically bamboo stem for supercapacitor application Taer, Erman; Pratiwi, Lini; Apriwandi, Apriwandi; Mustika, Widya Sinta; Taslim, Rika; Agustino, Agustino
Communications in Science and Technology Vol 5 No 1 (2020)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

A three-dimensional pore structure on activated carbon derived from hierarchically bamboo stem was synthesized in the monolithic form for increased applicability as a supercapacitor electrode. The preparation involved two step carbonizations, using a chemical activation at different concentrations. Subsequently, the morphology, chemical content, specific surface area and pore size distribution, as well as crystalline degree were evaluated with scanning electron microscopy, energy X-ray (EDX), N2 sorption and X-ray diffraction, respectively. Therefore, cyclic voltammetry (CV) was used to assess the electrochemical performance, in a two electrode system. The result shows the significant impact of the three-dimensional structure on electrochemical performance, and the optimized sample exhibited specific capacitance of 168.8 F g-1, energy density of 23.44 Wh kg-1, and power density of 84.46 W kg-1.

Nanofiber-enrich activated carbon coin derived from tofu dregs as electrode materials for supercapacitor Taer, Erman; Apriwandi; Hasanah, Fainida; Taslim, Rika
Communications in Science and Technology Vol 6 No 1 (2021)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.6.1.2021.407

In this study, the activated carbon with enriched nanofiber obtained from free-binder materials. It was conducted tofu dregs carbon nanofiber as electrode material for supercapacitor without the addition of pVdF/PTFE. The chemical impregnation of NaOH, ZnCl2 and H3PO4 at high-temperature pyrolysis in an N2-CO2 environment converted the tofu dregs into carbon coin. Subsequently, the physical properties including, microcrystalline, morphology, element analysis, and electrochemical properties of specific capacitance were investigated. The morphological structure of activated carbon showed high nanofiber density and was decorated by sponge-like pores. In addition, the nanofiber contains oxygen content of 12.70% which can act as self-doping due to the pseudo-capacitance properties. Furthermore, the two-electrode system obtained a specific capacitance of 163 F g-1 in 1 M H2SO4 electrolyte. The results showed that tofu dregs-based activated carbon coins are sustainable and efficient to obtain high-dense nanofiber structure as electrode materials for energy storage applications.

Analisis Persediaan Bahan Baku Dengan Menggunakan Metode Economic Order Quantity (EOQ) Dan Period Order Quantity (POQ) Pada Proses Produksi Pintu PVC Di PT. Kencana Inti Andalan (KIA) Satrio, Tedy; Nazaruddin, Nazaruddin; Nofirza, Nofirza; Surayya Lubis, Fitriani; Taslim, Rika
Matrik : Jurnal Manajemen dan Teknik Industri Produksi Vol 24 No 2 (2024)
Publisher : Prodi Teknik Industri Universitas Muhammadiyah Gresik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30587/matrik.v24i2.6739

PT. Kencana Inti Andalan adalah perusahaan kontruksi yang menawarkan bahan bangunan untuk proyek pembangunan. Karena permintaan yang tidak stabil atau berfluktuasi, pengendalian persediaan bahan baku PT. Kencana Inti Andalan belum optimal. Akibatnya, stok di gudang berkurang, sehingga proses persediaan bahan baku di perusahaan berkurang. Dengan menggunakan metode Economic Order Quantity (EOQ) dan Period Order Quantity (POQ), tujuan penelitian ini adalah untuk menentukan ukuran pesanan, frekuensi pemesanan, dan biaya total persediaan. Hasil dari Economic Order Quantity (EOQ) adalah 602,80 unit, dengan frekuensi pemesanan 10 kali, dan biaya persedaan sebesar 103.724.993,19362. Hasil dari Period Order Quantity (POQ) adalah 255,41 unit, dengan frekuensi pemesanan sebanyak 24 kali.. Dari kedua metode ini di didapatkan selisih biaya persediaan yang di peroleh EOQ lebih menghemat dari POQ, hal ini di kerenakan biaya pemesanan POQ lebih besr di bandingkan dengan EOQ.

PERENCANAAN PERAWATAN MESIN VACUUM TRUCK MENGGUNAKAN METODE RELIABILITY CENTERED MAINTENANCE (RCM) DAN OVERALL MEASURE OF MAINTENANCE PERFORMANCE (OMMP) Mayuta, Fadhila Putra; Hamdy, Muhammad Ihsan; Lubis, Fitriani Surayya; Harpito, Harpito; Taslim, Rika
INTECOMS: Journal of Information Technology and Computer Science Vol 7 No 4 (2024): INTECOMS: Journal of Information Technology and Computer Science
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/intecoms.v7i4.11024

Penelitian ini bertujuan untuk menghasilkan perawatan perbaikan pada vacuum pump kemudian mengukur kinerja perawatan perusahaan serta mengusulkan perbaikan pada indikator yang memiliki kinerja paling rendah. PT. X merupakan perusahaan yang bergerak di bidang jasa penyewaan alat berat. Jasa yang ditawarkan yaitu transportasi drilling di area rig migas. Perusahaan ini menjadwalkan pemeliharaan secara berkala, setiap unit truck telah menempuh jarak 10.000 km. Namun, pemeliharaan tersebut tidak berjalan sesuai yang dijadwalkan. Pemeliharaan banyak tertunda karena perusahaan mendahulukan unit yang rusak untuk perbaikan. Metode RCM dan OMMP digunakan untuk mengetahui komponen kritis mesin dan efektivitas kinerja perusahaan dalam melakukan perawatan. Hasil penelitian ini terdapat 4 komponen yang sering mengalami kerusakan, yaitu crank journal, bearing, seal piston, dan pressure gauge. Untuk kinerja bagian pemeliharaan, dari 14 indikator yang diukur terdapat 8 indikator yang tidak mencapai target perusahaan. Rekomendasi perbaikan yang diberikan yaitu melengkapi SOP perusahaan untuk perawatan dan melakukan penerapan Total Productive Maintenance (TPM). Kata Kunci: Perawatan, Sistem Kerja, RCM, OMMP, Vacuum Pump.

Harnessing multi-doping porous carbon from Musa paradisiaca L. peel waste for solid-state supercapacitors Purba, Cenora Evelynza; Nursyafni, Nursyafni; Apriwandi, Apriwandi; Kresna, Pharada; Julnaidi, Julnaidi; Nasir, Muhammad; Farma, Rakhmawati; Dewi, Rahmi; Martin, Awaludin; Hardanto, Lilik Tri; Taslim, Rika; Taer, Erman
Indonesian Physics Communication Vol 21, No 3 (2024)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.21.3.187-196

The demand for low-cost carbons with multi-doping in supercapacitors has led to a significant focus on utilizing biomass waste to produce activated carbons. The research successfully utilized Musa paradisiaca L. (MPL) peel as a porous carbon for solid-state supercapacitor. The process involved collecting banana peel waste, drying the peels using sunlight, pre-carbonization using a furnace, pH neutralization, drying, crushing carbon particles, and ensuring uniform particle size. Different concentrations of the catalytic ZnCl2 solution (300, 500, and 700 mmol/g) were selected to optimize physical and electrochemical properties. The resulting chemically activated MPL carbon powder was evaluated using SEM-EDS, XRD, and BET. MPL activated carbon with a 500 mmol/g solution of ZnCl2 was found to have optimal physical properties with a carbon percentage of 81.65%, oxygen 17.39%, phosphorus 0.42%, and boron 0.52%. Electrochemical properties were evaluated using dual-electrode system was exhibited the highest specific capacitance of 67 F/g. These findings demonstrate the potential of MPL peel waste as a high quality electrode for supercapaicor next-generation.

Co-Authors Achmad Noerkhaerin Putra Agustino Agustino Agustino, Agustino Ahmad Fudholi Andhen Sury, Nyvia Andika Afrianda april, Muhammad Dhany Aprilia Pratama Apriwandi Apriwandi . Awaludin Martin Chitraningrum, Nidya Deniza, Rindhu Nabila Erman Taer Fachry Abda El Rahman Fadli Perdana Yuda Fadli Perdana Yuda Fairuzy, Zeeva Khalilah Fitri Aryani Gunawan, Resky Hamdy, Muhammad Ihsan Hardanto, Lilik Tri Harpito Harpito, Harpito Hartati , Misra Hartati, Misra Hasanah, Fainida Hidayatullah, Aditya Rizky Ihsan Hamdy, Muhammad Iwantono Iwan Barnawi Juli Andry Julnaidi, Julnaidi Khumairah, Zahra Kresna, Pharada Lubis, Fitriani Surayya Lutfi Rindang Lestari Mayuta, Fadhila Putra Melda Riyani Butet Misra Hartati Muhammad Ihsan Hamdy Muhammad Isnaini Hadiyyul Umam Muhammad Nasir Muhammad Nur Muhammad Nur Mustika, Widya Sinta N. Nazaruddin Nazaruddin Nofirza Nofirza Nursyafni, Nursyafni Nursyaputri, Wan Mery Okti, Okti Wardani perdana, Muhammad Bayu Tesri Pratiwi, Lini Purba, Cenora Evelynza Putri, Rahma Lia Rahmi Dewi Rakhmawati Farma Satrio, Tedy Sinta Mustika, Widya Suardi, Syafarudin Sugandi, Bagus Ahmad Suherman Suherman, Suherman Suraya Lubis, Fitriani Surayya Lubis , Fitriani Surayya Lubis, Fitriani Tanjung, Rindi Aini Tengku Nurainun Umam, Muhammad Isnaini Hadiyul Wetya Fatma Kumala Sari Yudistia, Fiki

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