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All Journal Indonesia Chimica Acta Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Venn: Journal of Sustainable Innovation on Education, Mathematics and Natural Sciences KOLONI
Nurfiansyah, Nurfiansyah
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Education Environmental Science Law, Crime, Criminology & Criminal Justice Mathematics Physics Public Health Social Sciences Other

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Pengaruh Suhu dan Ion Logam Terhadap Potensi Senyawa Kompleks Ditiokarbamat Sebagai Zat Aditif Pada Pelumas Ranggina, Dian; Darajat, Zakiyah; Yunus, Muhammad Arham; Nurfiansyah, Nurfiansyah
KOLONI Vol. 1 No. 4 (2022): DESEMBER 2022
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/koloni.v1i4.94

Abstract

The ideal quality of lubricant can be obtained by adding additives. One of the functions of additives in lubricants is to maintain viscosity against temperature changes. Dithiocarbamate complexes with heavy metals have very low solubility in water so that dithiocarbamate compounds have great potential as additives in lubricants. This research was conducted in an effort to determine the effect of temperature (40 oC and 100 oC) on the viscosity of the lubricant and metal ions (Mn2+, Fe3+, Co2+) in the synthesis of dithiocarbamate complex compounds on their potential as additives in lubricants. This compound was synthesized by in situ method and to measure and compare the viscosity of the lubricant before and after the addition of the complex compound as an additive.The results showed that complex compounds from N-ethylisopropylditiocarbamate ligands could be synthesized with metal ions Mn(II), Fe(III) and Co(II). Where is the synthesis of complex compounds obtained yields Mn(II)-N-ethylisopropylditiocarbamate amounted to 49.59%, Fe(III)-N-Ethylisopropyldithiocarbamate of 41.81%,and Co(II)-N-Etilisopropil ditiocarbamate by64.12%.From the results of the characterization of the viscosity test, it can be seen that temperature and metal ions in complex compounds affect their potential effectiveness as additives in lubricants. Of the three complex compounds it is more effective at 100 oC than 40 oC, where metal ions Mn (II) are more effective than Fe(III) and Co (II). Keywords: Lubricants, additives, metal ions, temperature, dithiocarbamate.
ADSORBSI PEROKSIDA MINYAK JELANTAH DENGAN HIDROKSIAPATIT ASAL TULANG AYAM: PENGARUH ALKALINITAS AKTIVATOR Nurfiansyah, Nurfiansyah; Srinanda Israwati
Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Vol. 7 No. 2 (2025): Literasi Artikel Penelitian Kimia
Publisher : Program Studi Kimia, Fakultas MIPA, Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/jc.v7i2.6185

Abstract

Peroksida merupakan senyawa reaktif yang umumnya terbentuk pada minyak jelantah akibat interaksi antara minyak goreng dan oksigen selama proses pemanasan. Hidroksiapatit yang berasal dari tulang ayam memiliki potensi signifikan untuk menghilangkan peroksida karena struktur berporinya serta adanya gugus aktif yang melimpah yang mampu mengikat molekul peroksida. Kapasitas adsorpsi hidroksiapatit berbasis tulang ayam dapat ditingkatkan melalui penghilangan hambatan pada struktur porinya. Dalam penelitian ini, natrium hidroksida (NaOH) digunakan sebagai aktivator kimia dengan variasi konsentrasi 5%, 10%, 15%, 20%, dan 25% (b/v). Nilai peroksida ditentukan sesuai dengan prosedur yang tercantum dalam SNI 2902:2011. Hasil penelitian menunjukkan bahwa konsentrasi NaOH optimal adalah 15%, yang menghasilkan kapasitas adsorpsi tertinggi sebesar 19,7820%.
The Synthesis, Characterization Gd(Iii) Complex with Heptilmethyl- Ditiocarbamate and 2,9-Dimethyl Phenanthroline as Anti-Tuberculosis Yunus, Muhammad Arham; Indah, Raya; Nurfiansyah, Nurfiansyah; Mimin , Septiani
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 16, No 1: June 2023
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70561/ica.v16i1.26900

Abstract

Mycobacterium tuberculosis is a bacterium that causes tuberculosis infection disease. The aim of this study was to produce complex compounds that have the ability to damage the cell wall of Mycobacterium tuberculosis. Gd(III)Heptylmethyldithiocarbamate 2,9-dimethyl phenanthroline complex was synthesised and characterised by reacting N-heptylmethylamine, carbondisulphide, 2,9-dimethyl phenanthroline and lanthanide group metal ion (Gadolinium) using in situ method. Characterisation was carried out using electrothermal melting point, conductometer, UV-Vis spectrophotometer, and FT-IR spectrophotometer. The resulting Gd(III)Heptylmethyldithiocarbamate 2,9-dimethyl phenanthroline complex was white in colour as much as 7.01%, conductivity 20 Ω-1 and melting point 208-210o C. Testing of complex compounds gave effective results as antibacterial Mycobacterium tuberculosis.
Studi Kandungan Hara Organik dan Anorganik pada Pupuk Organik Berbasis Fermentasi Bakteri dan Biokonversi oleh Cacing Tanah (Vermikompos) Nurfiansyah, Nurfiansyah; Muhammad Anshar; Ahmad Nurul Muttaqin; Ahmad Zubair Sultan; Mahirullah Mahirullah; Muhammad Arham Yunus
Venn: Journal of Sustainable Innovation on Education, Mathematics and Natural Sciences Vol. 5 No. 2 (2026): Biology, Physics, Chemistry, and other Basic Sciences
Publisher : Pusat Studi Bahasa dan Publikasi Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53696/venn.v5i2.429

Abstract

The increasing accumulation of household organic waste, particularly leaf waste, poses environmental challenges due to limited optimal management and low added value utilization. Leaf waste have potential to be converted into organic fertilizer; however, natural decomposition is slow and often produces compost with inconsistent chemical quality. This study aims to evaluate the organic and inorganic compound content of solid organic fertilizer produced through an integrated approach combining mechanical shredding, bacterial fermentation, and vermicomposting. The research method involved shredding leaf waste using a rotary cutter shredder, followed by bacterial fermentation using activated effective microorganism and subsequent vermicomposting employing Pheretima posthuma. Compost quality was assessed based on physical parameters (temperature, odor, and color) and chemical parameters in accordance with SNI 19-7030-2004. The results showed that the compost reached a relatively mature condition, indicated by stable temperature, earthy odor, and dark brown color at the end of the process. Most chemical parameters met the SNI requirements, particularly phosphorus (P₂O₅) and potassium (K₂O), while heavy metal contents such as Pb and As were not detected and other metals remained well below permissible limits, suggesting the role of earthworm activity in reducing metal bioavailability. However, C-organic content and C/N ratio were slightly below and above the standard range, respectively. Overall, the integrated fermentation–vermicomposting approach demonstrates strong potential as sustainable technology for converting leaf waste into environmentally friendly organic fertilizer. However, further process optimization is required to improve the chemical quality of the product and to enhance the worm separation system for more efficient processing.
Co-Authors Ahmad Nurul Muttaqin Ahmad Zubair Sultan Dian Ranggina Indah, Raya Mahirullah Mahirullah Mimin , Septiani Muhammad Anshar Srinanda Israwati Yunus, Muhammad Arham Zakiyah Darajat