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All Journal Jurnal Periodic Jurusan Kimia UNP Entalpi Pendidikan Kimia Journal of Natural Sciences CHEDS: Journal of Chemistry, Education, and Science International Journal of Public Health Excellence (IJPHE) MASALIQ: Jurnal Pendidikan dan Sains JRFES Jurnal Pengabdian Informatika (JUPITA) Asian Journal of Science, Technology, Engineering, and Art Jurnal Nasional Teknologi Informasi dan Aplikasinya
Putra, Ananda
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Pengaruh Variasi Ukuran Ketebalan Material terhadap Karakteristik Termoelektrik Komposit CuO/Karbon Aktif Kulit Pisang Kepok Aisyi, Rihadatul; Putra, Ananda
Asian Journal of Science, Technology, Engineering, and Art Vol 1 No 2 (2023): Asian Journal of Science, Technology, Engineering, and Art
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/ajstea.v1i2.2069

Abstract

Thermoelectric is a device that can convert heat energy into electrical energy. One thing that influences the quality and characteristics of a thermoelectric material is the size of the thermoelectric material. In this research, we will look at the effect of the size of the thermoelectric material which has been varied in thickness. The thermoelectric material itself is made from a composite of active carbon from kepok banana peel with CuO with a mass ratio of 3:7. The composite was then printed with varying mold thickness sizes and the results were that a mold with a thickness of 0.5 cm was the best mold with an electrical conductivity value of 0.2 MS/cm, a heat conductivity value of 0.0680394 J/s, a value the Seebeck coefficient is 1.13229 mV/oK. The band gap value of the activated carbon and CuO composite resulting from the DR-UV test is 1.27 eV
PENENTUAN KONDISI OPTIMUM DESORPSI KATION Cd2+ DARI ADSORBEN SILIKA GEL-GPTMS TERMODIFIKASI SULFONAT Afifi, Rayhanil; Oktavia, Budhi; Kurniawati, Desy; Putra, Ananda
CHEDS: Journal of Chemistry, Education, and Science Vol 8, No 2 (2024)
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/cheds.v8i2.9592

Abstract

Silica gel mengandung situs aktif berupa gugus silanol (Si-OH) dan siloksan (Si-O-Si), sehingga berguna untuk proses adsorpsi ion logam. Pada penelitian ini silika GPTMS termodifikasi sulfonat digunakan sebagai adsorben kation kadmium. Proses desorpsi dilakukan untuk menghilangkan kation kadmium dari adsorben Silika GPTMS Sulfonat, sehingga adsorben dapat digunakan kembali. Tujuan dari penelitian ini adalah untuk mengetahui kondisi optimal desorpsi ion Cd2+dengan memvariasikan jenis bahan penyerap, konsentrasi, dan laju alir. Hasil penelitian menunjukkan berat adsorpsi sebesar 0,1853 mg dengan persentase 96,81%. Pada proses desorpsi eluen desorpsi terbaik untuk pelepasan Cd2+ adalah CaCl2 0,025M, dengan persentase desorpsi sebesar 96,49% dengan berat terdesorpsi sebesar 0,1787 mg Cd2+. Pada konsentrasi CaCl2 yang divariasikan, kondisi optimum diperoleh pada konsentrasi 0,05 M dengan persentase desorpsi 100% dan berat terdesorpsi sebesar 0,1793 mg Cd2+. Sedangkan pada laju alir, kondisi optimum diperoleh pada 1 mL/menit dengan persentase desorpsi 100%.
IMPLEMENTASI USER INTERFACE DESIGN PADA APLIKASI BADUNG ON TIME LAYANAN SISTEM ABSENSI PEMERINTAH KABUPATEN BADUNG Putra, Ananda; I Wayan Santiyasa; Ida Ayu Gde Suwiprabayanti Putra
Jurnal Pengabdian Informatika Vol. 3 No. 1 (2024): JUPITA Volume 3 Nomor 1, November 2024
Publisher : Jurusan Informatika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

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Abstract

Dinas Komunikasi dan Informatika Kabupaten Badung memiliki peran dalam menjaga keamanan serta kelancaran sistem informasi instansi pemerintahan daerah. Melalui transformasi ke teknologi berbasis online, seperti implementasi sistem absensi berbasis aplikasi "Badung on Time," peningkatan kinerja dan profesionalisme pegawai pemerintahan menjadi fokus utama. Evaluasi kedisiplinan ASN melalui sistem absensi ini menjadi sarana yang efektif dalam memantau dan meningkatkan kedisiplinan kerja, mengurangi pelanggaran, serta menciptakan lingkungan kerja yang lebih efisien. Aplikasi ini juga mencerminkan upaya Kabupaten Badung untuk memanfaatkan teknologi dalam mencapai tujuan dan tanggung jawab pemerintah secara efektif dan efisien di era digital. Penelitian ini memberikan pandangan penting tentang bagaimana teknologi dapat mendukung dan memperkuat kinerja pegawai pemerintahan, serta memberikan solusi nyata dalam mewujudkan tugas-tugas pemerintahan yang lebih efisien dan profesional di tingkat daerah.
Pemanfaatan Karbon Batang Jagung (Zea mays) untuk Penjernihan Minyak Jelantah Karsa, Dion Randi; Putra, Ananda; Sanjaya, Hary; Novel, Dheo Shalsabilla; Izanel, Rezi Ananta; Putri, Natasya Alya; Khaliq, Feni Kurnia; Jannah, Miftahul; Nizar, Umar Kalmar
Periodic Vol 14, No 2 (2025): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v14i2.130330

Abstract

Used cooking oil, which is often discarded carelessly, can cause environmental pollution and adversely affect health if consumed again. This study explored the use of activated carbon produced from corn stalks (Zea mays) for the purification of used cooking oil. Activated carbon was produced through chemical activation using NaOH and applied to used cooking oil in various treatments, including combination with cornstarch. The quality of the purified oil was evaluated based on density, flow rate, saponification number, and acid number. The results of this study are expected to provide an environmentally friendly solution in the treatment of used cooking oil waste and utilize corn stalk waste effectively, thereby reducing negative impacts on the environment and improving public health.The result of this study is activated carbon from corn stalks which is able to reduce the density of 0.83 g/mL with cornstarch adsorbent, flow rate of 0.201 ml/s with carbon adsorbent, acid number of 5.31 mg/KOH with carbon adsorbent, saponification number of 139.46 mg/KOH.
Co-Authors Afif Ramadhan, Afif Afifi, Rayhanil Aisyi, Rihadatul Alexander, Devin Alizar, Alizar Anjaly, Azzahra Nurfadillah Budhi Oktavia Chindikia, Ilmy Desy Kurniawati Edi Nasra Farras, Muhammad Sadiq Fitri Amelia Hary Sanjaya Humaira, Alifah I WAYAN SANTIYASA Ida Ayu Gde Suwiprabayanti Putra Istiqamah, Siti Sarah Izanel, Rezi Ananta Karsa, Dion Randi Khaliq, Feni Kurnia Larissa, Olivia Lestari, Kardina Liora, Kevin Miftahul Jannah Minda Azhar Nizar, Umar Kalmar Novel, Dheo Shalsabilla Novriansyah, Edo Nugroho, Fajar Prianto Oktavia, Anissya Rima Pernadi, Niza Lian Purnamasari, Sil Putri, Natasya Alya Rahadian Zainul Rahmi, Maulidia Arsyta Reni, Fatina Rahmi Alamsyah Riga, Riga Rizki, Suci Yulia Safhira, Elsa Sari, Putri Manda Sari, Trisna Kumala Setiowati, Fiqih Sekar Sidiq, Aqil Marsya Sukardi, Azaria Saiza Tjahyanto, Teddy Wiyono, Putri Dhiya Prameswari Wulandari, Yolanda Yohandri Yudelta, Oltry Z, Zulpadrianto