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All Journal JPSE (Journal of Physical Science and Engineering) Jurnal Abdimas Madani dan Lestari (JAMALI) Jurnal Pijar MIPA Hexagon
Syamsul Hidayat
Teknik Lingkungan Fakultas Teknologi Lingkungan Dan Mineral, Universitas Teknologi Sumbawa
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Materials Science & Nanotechnology Mathematics Physics Other

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Green Synthesis AgNPs Immobilized to Whatman Paper Using Chromolaena odorata Extract and Its Application as Photocatalyst Kiki Firanita; Syamsul Hidayat; Fadhli Dzil Ikram; Syamsul Bahtiar; Emsal Yanuar
JPSE (Journal of Physical Science and Engineering) Vol 7, No 1 (2022): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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

Abstract

Synthesis and immobilization of silver nanoparticles (AgNPs) to Whatman paper carried out using Cromolaena odorata extract irradiated by sunlight. The UV-Vis shows silver nanoparticles successfully formed from AgNO3 1 mM, 2 mM, and 3 mM with the absorption peaks at 455 nm, 452 nm, and 451 nm, respectively. The SEM shows AgNPs are spherical with an average particle size are 60.45 nm, 63.19 nm, and 68.42 nm, respectively. The EDX spectrum shows the composition of silver immobilized to Whatman paper increase with increasing concentration of 10.14Wt%, 64.48Wt%, and 70.48 Wt%, respectively. AgNPs/Whatman paper has a cubic crystal structure, space group Fm-3m, lattice parameter (a) 4.0862 Ǻ and crystal size of 42.94 nm. FTIR reach peaks at 520.78 cm-1 and 1,059 cm-1 explains the vibration of the Ag-O bonds indicated the formation of AgNPs. Furthermore, the photocatalyst ability for dye degradation was evaluated using methylene blue 10 ppm under sunlight for 6 hours. The result shows a changed colour to fade and decreases the absorbance ability of methylene blue. Therefore, it can be concluded that green synthesis and immobilization of AgNPs/Whatman paper have a potential to be applied as photocatalyst materials for dye degradation.DOI: 10.17977/um024v7i12022p006
Pengaruh Ukuran Partikel, Persen Padatan, dan pH pada Proses Flotasi Terhadap Perolehan Kembali Tembaga Syamsul Bahtiar; Wafdan Muzakki; Rita Desiasni; Fauzi Widyawati; Syamsul Hidayat
Jurnal Pijar Mipa Vol. 16 No. 3 (2021): Juni 2021
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (269.084 KB) | DOI: 10.29303/jpm.v16i3.1308

Abstract

Flotasi merupakan proses ekstraksi logam berdasarkan perbedaan tegangan permukaan dari mineral di dalam air dengan cara mengapungkan mineral ke permukaan. Faktor yang mempengaruhi nilai perolehan kembali Tembaga antara lain ditentukan oleh ukuran partikel, jumlah persen padatan dan kondisi larutan. Pada penelitian ini akan dilakukan pengamatan terhadap perolehan kembali mineral tembaga dengan melakukan variasi ukuran partikel, variasi persen padatan pada jumlah 33%, 42% dan 47% dan variasi pH larutan pada kondisi basa yaitu pH 10, 10.3 dan 10.6. Pengecilan ukuran partikel dilakukan dengan proses Grinding sampai mendapatkan ukuran + 212 mikron. Selanjutnya, pH larutan dikontrol dengan penambahan kapur. Analisis perolehan kembali mineral tembaga secara kuantittatif dilakukan dengan karakterisasi AAS. Hasil penelitian menunjukkan bahwa ukuran partikel yang optimum didapat pada pada variasi 3% +212 mikron dengan nilai 95.12%. Sedangkan, jumlah persen padatan 42% memberikan nilai tertinggi yaitu 95.12%. Selanjutnya, diperoleh pH terbaik untuk memperoleh tembaga yang optimum yaitu pada pH 10.6 sebesar 95.12%
Study of Nickel Leaching Using Sulfuric Acid and Phosphoric Acid on The Selectivity Nickel Ore Syamsul Hidayat; Sri Yulianti; Dian Anggreini; Syamsul Bahtiar
Jurnal Pijar Mipa Vol. 16 No. 3 (2021): Juni 2021
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (217.54 KB) | DOI: 10.29303/jpm.v16i3.2602

Abstract

Study of nickel leaching using sulfuric acid and phosphoric acid on the selectivity of low-grade laterite nickel ore under atmospheric conditions has been successfully carried out. In this study, the laterite nickel leaching process was carried out by varying the solution concentration and operating time. The concentrations of sulfuric acid and phosphoric acid solutions were varied at 5 M and 6 M concentrations, while the operating time was varied at 4 hours and 6 hours. For other operating conditions, it is kept constant with an operating temperature of 90 ℃, pulp density 15% w / v, particle size ≤ 200 mesh. After that, the analysis stage was carried out using an atomic absorption spectroscopy (AAS) tool to determine the nickel content in the sample. The results showed that the highest nickel recovery was obtained at the concentration of 5 M sulfuric acid solution of 2.60% and 5 M phosphoric acid of 2.59% with the optimum operating time at 4 hours of operating time.
Edukasi Pertanian Ramah Lingkungan di Desa Pungka, Kabupaten Sumbawa Nurul Amri Komarudin; Yuni Yolanda; Syamsul Hidayat; Pramudya Bagas Utama; Chairul Anam Afgani; Beata Ratnawati; Rifqi Rahmat Hidayatullah; Leonard Dharmawan
Jurnal Abdimas Madani dan Lestari (JAMALI) Volume 04, Issue 02, September 2022
Publisher : UII

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jamali.vol4.iss2.art8

Abstract

This service activity was carried out in Pungka Village, Unter Iwes District, Sumbawa Regency, West Nusa Tenggara in June-July 2022. The agricultural sector is the main source of livelihood for residents in Pungka Village, but there are still many residents in Pungka Village who have not applied environmentally friendly agricultural activities, where around 90% of farmers use chemical fertilizers in their agricultural activities, around 85% carry out biomass burning activities left over from the harvest such as straw left over from rice crops and fronds of corn and sugarcane harvest residues, in addition, there are about 90% of farmers who use pesticides with doses that are not in accordance with the procedure for use. So that all of that can lead to an increase in the contribution of greenhouse gas (GHG) effects such as CH4 from paddy fields, CO2 and N2O from biomass fertilization and burning activities. So it can be said that agricultural activities in Pungka Village are still not environmentally friendly, therefore it is necessary to carry out counseling or socialization activities related to how to farm a healthy and environmentally friendly farming system. The purpose of this service activity is to educate farmers in Pungka Village regarding environmentally friendly farming methods by socializing organic farming systems, so that it is expected to ensure the sustainability and sustainability of agriculture and the environment in Pungka Village. So that the agricultural products are expected to be healthy for those who consume and preserve the surrounding environment
KARAKTERISTIK FISIKA LINGKUNGAN DAN PENDUGAAN FLUKS BAHANG TERASA PADA PERTANAMAN KELAPA SAWIT Nurul Amri Komarudin; Yuni Yolanda; Pramudya Bagas Utama; Syamsul Hidayat
Hexagon Jurnal Teknik dan Sains Vol 3 No 2 (2022): HEXAGON - Edisi 6
Publisher : Fakultas Teknologi Lingkungan dan Mineral - Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (513.328 KB) | DOI: 10.36761/hexagon.v3i2.1632

Abstract

Kelapa sawit merupakan sumber daya alam di sektor perkebunan yang bentuk kanopi hampir seragam, dimana semakin dewasa, tutupan kanopi kelapa sawit akan semakin rapat dan mempengaruhi langsung terhadap karakteristik fisika lingkungan (iklim mikro) disekitarnya. Pendugaan fluks bahang terasa pada pertanaman kelapa sawit penting dilakukan untuk menduga kontribusi kelapa sawit dalam meredam atau melepas panas ke lingkungan. Metode yang digunakan pada penelitian ini adalah metode aerodinamik dan penman-monteith. Hasil menunjukkan bahwa bahwa nilai penerimaan radiasi global, suhu udara, dan kecepatan angin maksimum di kedua perkebunan terjadi pada siang hari , sedangkan nilai maksimum kelembaban relatif pada kedua wilayah terjadi pada pagi hari untuk nilai penerimaan radiasi global dan suhu udara pada lingkungan pertanaman kelapa sawit muda (umur 2 tahun) lebih tinggi darpada umur dewasa ( umur 12 tahun), sedangkan untuk nilai kecepatan angin dan kelembaban relatif terjadi sebaliknya, puncak fluks bahang terasa terjadi pada siang hari pada kedua umur tanaman kelapa sawit. Fluks bahang terasa pada pertanaman kelapa sawit muda (umur 2 tahun) lebih tinggi dibandingkan umur dewasa (umur 12 tahun), dengan nilai rata-rata pada masing-masing pertanaman sebesar 20.02 W/m² dan 9.16 W/m².
Effect of addition of organic inhibitor of kersen leaf extract (Muntingia calabura L) on corrosion rate on A36 steel in seawater media Syamsul Hidayat; Rita Desiasni; Nita Novia
Jurnal Pijar Mipa Vol. 18 No. 4 (2023): July 2023
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v18i4.5237

Abstract

Organic inhibitors utilization to reduce corrosion rate on metal has been widely studied because of their environmentally friendly nature. This study aims to calculate the value of the corrosion rate of A36 steel, the efficiency of inhibitors from the extract of Kersen leaf, and determine the corrosion that occurs in the material of A36 steel. The method used is weight loss. The sample was immersed for seven days with inhibitor concentration variations of 0 ppm, 100 ppm, 200 ppm, 300 ppm, 400 ppm, and 500 ppm. The results showed that the extract of Kersen leaf can reduce the corrosion rate. The corrosion rate decreases as the number concentration of the inhibitor is added to the test medium. In contrast, the inhibitor efficiency increases with increasing amounts of inhibitor concentrations added to the test medium. The lowest corrosion rate value and the highest efficiency at adding 500 ppm inhibitor concentration are 0,0767 mmpy and 38,83%, respectively. Based on the results of the microstructure of A36 steel after immersion, pitting corrosion is formed in the form of holes on the steel surface. On steel without inhibitors, corrosion products are more, and the surface is rougher than steel samples added with inhibitors.
Co-Authors Afgani, Chairul Anam Bahtiar, Syamsul Beata Ratnawati Dian Anggreini Fadhli Dzil Ikram Fauzi Widyawati Kiki Firanita Leonard Dharmawan Nita Novia Nurul Amri Komarudin Nurul Amri Komarudin Pramudya Bagas Utama Rifqi Rahmat Hidayatullah Rita Desiasni Sri Yulianti Wafdan Muzakki Yanuar, Emsal Yuni Yolanda