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All Journal Al-Hikmah EduChemia: Jurnal Kimia dan Pendidikan KOVALEN: Jurnal Riset Kimia Al-Kimia Walisongo Journal of Chemistry Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Jurnal Kesehatan Panrita Husada International Journal Of Science, Technology & Management (IJSTM) CHEMVIRO : Jurnal Kimia dan Ilmu Lingkungan
Rahmiani Gani
Universitas Islam Negeri Alauddin Makassar
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Peluang Hidrogen sebagai Bahan Bakar Alternatif di Indonesia Rahmiani Gani; Syarifah Rabiatul Adawiah; Arfiani Nur; Titik Andriani
Al-Hikmah Journal for Religious Studies Vol 22 No 2 (2020): December
Publisher : Universitas Islam Negeri Alauddin

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

Abstract

Tulisan ini bertujuan untuk melihat peluang penggunaan hidrogen sebagai bahan bakar alternatif khusunya diIndonesia yang ke depannya diharapkan dapat menggantikan sumber daya dari bahan fosil yang semakin menipis. Indonesia dengan sumber air yang melimpah diharapkan dapat dimanfaatkan sebagai salah satu bahan utama produksi hidrogen melalui proses elektrolisis. Teknologi sederhana dengan biaya yang lebih murah serta komponen yang mudah diperoleh dapat dikembangkan lebih baik dengan tetap mengharapkan hasil produksi hidrogen lebih baik. Pemilihan elektroda yang tepat diharapkan mampu meningkatkan efisiensi produksi hidrogen. Stainless steel sebagai salah satu material konduktif yang murah, mudah diperoleh dan sederhana dalam penggunaannya dapat menjadi elektroda dalam proses elektrolisis air. Stainless steel adalah elektroda konduktif yang dapat dikomersilkan untuk produksi hidrogen dalam skala yang lebih besar dan diharapkan bisa dikembangkan untuk aplikasi yang lebih luas.
Analisis Kadar Formalin Pada Tahu Yang Beredar Di Pasar Kecamatan Ujung Bulu Kabupaten Bulukumba Arfiani Nur; Rahmatia Syam; Asdinar; Aisyah; Rahmiani Gani; Syarifah Rabiatul Adawiah; Titik Andriani
Jurnal Kesehatan Panrita Husada Vol 6 No 2 (2021)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (Stikes Panrita Husada Bulukumba)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37362/jkph.v6i2.577

Abstract

Food and Agriculture Organization (FAO) dan World Health Organization (WHO) menyatakan bahwa bahan tambahan makanan adalah bahan-bahan yang ditambahkan dengan sengaja ke dalam makanan dalam jumlah sidikit untuk memperbaiki warna, bentuk, citarasa, tekstur, atau sebagai pengawet. Menurut PerKBPOM No. 2 tahun 3013 tentang Bahan Berbahaya yang disalahgunakan dalam pangan salah satunya adalah formalin.Penelitian ini bertujuan untuk menganalisis kandungan formalin dalam tahu yang kemungkinan beredar di pasar tradisional kabupaten Bulukumba. Teknik sampling yang digunakan adalah Total Sampling. Metode analisis kualitatif formalin dilakukan dengan metode fenilhidrazin dan analisis kuantitatifnya dengan metode spektrofotometri. Sampel tahu diambil di Pasar Kecematan Ujung Bulu Kabupaten Bulukumba. Hasil penelitian menunjukkan dari 10 sampel tahu yang dibeli dari 10 penjual terdapat 3 sampel tahu yang mengandung formalin (30%). Kadar formalin dalam sampel tahu pada ketiga penjual tersebut adalah 10 ppm, 9,8 ppm, 9,5 ppm. Disarankan kepada pedagang agar tidak menggunakan formalin sebagai bahan tambahan pangan dan masyarakat agar berhati-hati dalam membeli bahan makanan.
Elektroplating Grafena-Polianilina pada Stainless Steel sebagai Elektroda pada Elektrolisis Air untuk Produksi Hidrogen: Electroplating of Graphene-Polyaniline on Stainless Steel as Electrodes on Water Electrolysis for Hydrogen Production Rahmiani Gani; Syarifah Rabiatul Adawiah; Arfiani Nur
KOVALEN: Jurnal Riset Kimia Vol. 7 No. 2 (2021): Edisi Agustus
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2021.v7.i2.15538

Abstract

Hydrogen production by water electrolysis can be optimalized by improve the working electrode. Stainless steel as working electrode was coated with graphene and polyaniline by using cyclic voltammetry method with Ag/AgCl as reference electrode and Pt as counter electrode. Coated electrodes were characterized by SEM-EDS and cyclic voltammetry method. Furthermore, the synthesized electrode was applied for water electrolysis by adding 1- 5 g/L NaHCO3. The characterization data showed that Stainless steel/Graphene-Polyaniline electrode can be synthesized by using cyclic voltammetry. The coating process was conducted at sweeping rate 10 mV/s on voltage -0.2 to 0.8 V for 10 cycles. The voltammograms showed that the highest cathodic peak current of electrolysis obtained at 0.491 mA by addition 2 g NaHCO3 on SS/G-PANi0,5 electrode, and the highest anodic peak current obtained at 0.191 mA by addition 2 g NaHCO3 on SS/G-PANi0,5 electrode. Based on the overpotential data, the smallest average potential difference of H+ adsorption obtained by SS/G-PANi1,0 electrode, and the smallest average potential difference of H+ desorption obtained by SS/G-PANi0,5 electrode. Keywords: Stainless steel, hydrogen production, electroplating, electrocatalyst, electrolysis
Studi Perbandingan Adsorpsi-Desorpsi Anion Nitrat dan Sulfat pada Bentonit Termodifikasi Syarifah Rabiatul Adawiah; Sutarno Sutarno; Arfiani Nur; Rahmiani Gani; Titik Andriani
Walisongo Journal of Chemistry Vol 4, No 1 (2021): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v4i1.7585

Abstract

Telah dilakukan studi perbandingan adsorpsi-desorpsi nitrat dan sulfat pada bentonit termodifikasi. Adsorpsi dilakukan dengan mengocok adsorben dalam larutan adsorbat pada kondisi pH, waktu kontak dan konsentrasi optimum. Selanjutnya dilakukan studi desorpsi pada air dan asam sitrat yang menggunakan adsorben yang telah mengadsorpsi nitrat dan sulfat. Studi menunjukkan bahwa kapasitas adsorpsi dipengaruhi oleh muatan dan ukuran anion. Semakin kecil muatan dan ukuran anion, semakin besar kapasitas adsorpsinya. Hasil penelitian menunjukkan kapasitas adsorpsi: nitrat (0,032 mmol g-1) sulfat (0,020 mmol g-1). Pada studi desorpsi menunjukkan bahwa persentase pelepasan juga dipengaruhi oleh muatan dan ukuran anion, semakin besar muatan dan ukuran anion maka semakin mudah proses desorpsi. Persentase desorpsi dalam air pada waktu kesetimbangan adalah: sulfat (71,33%) nitrat (50,71%) dan dalam asam sitrat adalah: sulfat (95,76%) nitrat (59,05%). Hasil penelitian menunjukkan bahwa kelarutan anion dalam asam sitrat lebih besar dari pada air, hal ini merupakan persyaratan untuk aplikasi pupuk lepas lambat (SRF).
Islam and the Environment (A Study of Durian Skin Waste as an Adsorbent to overcome Water Pollution) Rahmiani Gani
Al-Hikmah Journal for Religious Studies Vol 24 No 2 (2022): December
Publisher : Universitas Islam Negeri Alauddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-hikmah.v24i2.34687

Abstract

Nowadays environmental pollution has become a serious problem. Textile dye waste is one of the biggest contributors to environmental pollution. Durian (Durio zibethinus) has been known as a popular fruit in Indonesia. However, only several part of the durian fruit is used, namely its flesh. Durian skin is generally only thrown away and becomes waste pollutes the environment. Durian skin waste can be used as activated carbon in overcoming textile dye waste pollution. This study aims to determine the potential of durian skin from Luwu Regency, South Sulawesi as an adsorbent for textile dye waste. The process of making activated carbon is carried out through two stages that is physically by heating at 600 oC and chemically with hydrochloric acid 1M as activator and stirring for 24 hours. The quality test of activated carbon includes tests for water content, ash content, volatile matter content and fixed carbon content. The results showed that the activated carbon of the durian skin had met the standards of SNI 06-3730-1995, namely water content 12.1%, ash content 0.2%, volatile matter content 27.3% and bound carbon content 72.5%.
Kinetics Adsorption of Fe Metal using Cellulose Acetate from Palm Fronds (Borassus Flabellifer): Kinetika Adsorpsi Logam Fe menggunakan Selulosa Asetat dari Pelepah Lontar (Borassus Flabellifer) Iin Novianty; Erma; Saleh, Asri; Gani, Rahmiani
Al-Kimia Vol 12 No 1 (2024): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v12i1.45761

Abstract

Lontar palm fronds (Borassus flabellifer), containing 5.27% cellulose, can be converted into cellulose acetate, which serves as an effective adsorbent for binding iron metal. The adsorption method optimizes the binding of the adsorbate to the adsorbent based on mass and contact time. This study aims to characterize the cellulose acetate derived from lontar palm fronds and evaluate its efficacy as an adsorbent for iron (Fe) metal. The production stages of cellulose acetate include cellulose isolation, synthesis of cellulose acetate, and testing of acetyl content, with a degree of substitution valued at 2.24. Fourier transform infrared (FTIR) spectroscopy and atomic absorption spectrophotometry (AAS) were employed to characterize the cellulose acetate. The optimal absorption capacity for Fe metal was achieved with an adsorbent mass of 0.06 g, resulting in an absorption efficiency of 66.39%. The optimal contact time was determined to be 90 minutes, with an absorption efficiency of 47.56%. The adsorption kinetics of cellulose acetate for iron (Fe) followed the Pseudo Second Order model, with R² = 0.9935 and k = 0.0096.
Effectiveness of Anti-Lice Shampoo from Lemongrass Stalk (Cymbopogon Citratus) Sjamsiah, Sjamsiah; Nurwahyuni, Nurwahyuni; Gani, Rahmiani
EduChemia: Jurnal Kimia dan Pendidikan Vol 10, No 1 (2025)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v10i1.30603

Abstract

Head lice (Pediculus humanus capitis) are ectoparasites that attack the human head, causing excessive itching. To overcome this problem, shampoo with active substances from natural sources can be used, namely, kitchen lemongrass (Cymbopogon citratus). This study was designed to determine the effects of various concentrations of lemongrass stalk extract and the optimal concentration of the anti-head lice shampoo on head louse mortality. The results of the phytochemical screening revealed that the lemongrass stalk extract contains flavonoids, tannins, terpenoids, saponins and alkaloids. Lemongrass stalk extract can be used as a shampoo formulation with several concentrations ranging from 3%, 5%, 7% and 9%. The characteristic results revealed a thick liquid, homogeneous, brown to blackish brown color, a characteristic smell of the lemongrass stalk, a foam height range of approximately 6–5 cm, a pH range of approximately 5–6, and a viscosity range of approximately 100–5700 cP. The optimum concentrations that can kill head lice effectively and meet the SNI requirements for an adequate and safe shampoo to use are shampoo at concentrations of 5% and 7%.
The Effectiveness Of Shampoo Based On Kaffir Lime Leave Extract (Citrus Hystrix DC) And Lime Leave (Citrus Aurantifolia) As Natural Protection Against Head Lice Sjamsiah, Sjamsiah; Gani, Rahmiani; Febryanti, Amalyah; Gebriella, Gebriella; Mawaddah Warahmah, Nurul
International Journal of Science, Technology & Management Vol. 6 No. 3 (2025): May 2025
Publisher : Publisher Cv. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v6i3.1306

Abstract

Pediculus humanus capitis is one of the problems that can interfere with human health. To overcome this, alternative treatments other than commercial shampoos are needed that can harm humans. The selection of shampoo from natural ingredients can be an alternative, namely Kaffir lime leaf shampoo (Citrus hystrix DC) and lime leaf shampoo (Citrus aurantifolia). The purpose of this study was to determine the characteristic properties of anti-head lice shampoo and determine the optimum concentration of kaffir lime leaf extract and lime leaf extract against head lice mortality. Based on the results of research for phytochemical screening show that the extract contains flavonoid compounds, saponins, alkaloids, triterpenoids, and tannins. The characteristics of shampoo preparations are that they have a blackish-green shampoo color, a distinctive aroma of orange leaves, and a thick form. In addition, a normal pH of 5-6, viscosity of 100-6000 cP, and foam height of 4-6 cm is obtained. Effectiveness tests against head lice were obtained at an optimum concentration of 5% for both kaffir lime leaf extract and lime extract. This shows the good potential of natural ingredients kaffir lime leaves and lime leaves as the basic ingredients of anti-shampoo lice.
Pemanfaatan Limbah Bunga Lontar (Borassus flabellifer L) sebagai Adsorben Rhodamin B Iin, Iin Novianty; Rahmiani Gani
Jurnal Kimia dan Ilmu Lingkungan: Chemviro Vol. 3 No. 2 (2025): Vol. 3 No. 2 (2025)
Publisher : Universitas Bojonegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56071/jkil.v3i2.1389

Abstract

A study has been conducted on the utilization of activated carbon from palmyra flower waste (Borassus flabellifer L.) as an adsorbent for rhodamine B dye. The purpose of this study was to determine the optimum conditions for activated carbon from palmyra flower waste activated with phosphoric acid (H3PO4) in the adsorption process of Rhodamine B. The preparation of activated carbon from palmyra flower was carried out using the clin drum method. The adsorption process was carried out with variations in contact time and adsorbate concentration. The optimum conditions for the adsorption process of rhodamine B dye were obtained at a contact time of 90 minutes and an adsorbate concentration of 30 ppm with adsorption efficiency values of 50.22% and 77.13%, respectively.
SINTESIS BIOSURFAKTAN EKSTRAK DAUN PURING (Codiaeum variegatum) DAN KULIT JERUK PURUT (Citrus hystrix) SEBAGAI DETERGEN BIODEGRADABLE Chadijah, Sitti; Nurmayanti, Sarah; Gani, Rahmiani; Zahra, Ummi; Novianty, Iin
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.v7i2.6062

Abstract

Croton leaf (Codiaeum variegatum) and kaffir lime peel (Citrus hystrix) are plants that contain secondary metabolite compounds such as saponins and tannins. This research aims to utilize natural ingredients to biodegradable detergent synthesis and determine the quality of the biosurfactant product produced. The detergent composition was made using 5 variations of extract concentration, namely 15%, 30%, 45%, 50% and 55%. Analysis of the quality of detergent products includes organoleptic tests, pH tests, density tests, viscosity tests, foam height and foam stability tests as well as saponin and tannin levels contained therein before and after making the detergent. The detergent quality results obtained met SNI standards, namely pH 5-10, density 1.3 g/cm3, viscosity ranging from 3-20 cP, foam height 3-13 cm and foam stability 66.6% - 92.5%. Total saponin levels increased after making detergent and tannin levels decreased after making detergent. These results proved that croton leaf and kaffir lime peel can be used as raw materials for biodegradable detergent.
Co-Authors Aisyah Arfiani Nur Asdinar Erma Febryanti, Amalyah Gebriella, Gebriella Iin Novianty Iin, Iin Novianty Mawaddah Warahmah, Nurul Novianty, Iin Nurmayanti, Sarah Nurwahyuni, Nurwahyuni Rahmatia Syam Sitti Chadijah Sjamsiah, Sjamsiah Sjamsiah, Sjamsiah Sutarno Sutarno Syarifah Rabiatul Adawiah Titik Andriani Titik Andriani Ummi Zahra, Ummi