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All Journal Elkawnie Al-Kimia Chimica et Natura Acta KOMMAS: Jurnal Pengabdian Kepada Masyarakat Journal of Mathematics, Computation and Statistics (JMATHCOS) Tabasa: Jurnal Bahasa, Sastra Indonesia, dan Pengajarannya
Kurnia Ramadani
Department Of Chemistry, Faculty Of Science And Technology, UIN Alauddin Makassar, Makassar
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Education Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics

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Fitoremediasi Logam Kadmium (Cd) dari Asap Rokok Menggunakan Tanaman Puring (Codiaeum Variegatum) Kurniawati L; Syamsidar HS; Kurnia Ramadani
Al-Kimia Vol 4 No 1 (2016): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (249.529 KB) | DOI: 10.24252/al-kimia.v4i1.1457

Abstract

Environmental problems in Indonesia even in the world of growing. One of the factors causing the environmental problems with surging smoking habits in society that cause air pollution. One of the pollutants generated from cigarette smoke is a cadmium (Cd) metal. One of the efforts made in reducing pollutants in the air, especially Cd metals is phytoremediation method using plant croton (Codiaeum variegatum). This study aims to determine the ability of plants to absorb Cd metals croton. The method is performed by directly exposure at 3, 6 and 9 days. Instrument used in this study is an atomic absorption spectrophotometer (AAS). The results showed that the croton leaves absorb Cd metal with a maximum concentration of 1,065 mg/kg on days 9, so that it can be used as Cd metal phytoremediator
Biosorpsi Tanaman Puring (Codiaeum variegatum) Terhadap Emisi Timbal (Pb) Pada Kendaraan Bermotor Nur Amalia P; Syamsidar HS; Kurnia Ramadani
Al-Kimia Vol 2 No 2 (2014): Desember
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (259.48 KB) | DOI: 10.24252/al-kimia.v2i2.1654

Abstract

Enhancement the motorized vehicle number will be potential for air pollution in the big cities. One of the pollutant which is resulted from burning process fuel is timbale (Pb) metal. Alternative effort that is used to decrease the higher timbale (Pb) metal pollutantmaterial is with manner biosorption use puring plant (codiaeumvariegatum).The aim of this research is to know the puring plantability in absorbs Pb metal. The treatment methodis used to sprinkling plant and without sprinkling and than directly exposure to plant with period 3,6 and 9 days. The result of research  that puring leaves ability can absorb Pb concentration metal between (1 until 1,5) ppm or 0,304 mg/Kg at nine days of period exposure, it order can be considered as biosorption agent Pb metal pollution.
Biosorpsi Bogenvil (Bougainvillea spectabilis Wild) Terhadap Emisi Timbal (Pb) Pada Kendaraan Bermotor Andi Nurhikmah; Syamsidar HS; Kurnia Ramadani
Al-Kimia Vol 3 No 2 (2015): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (258.46 KB) | DOI: 10.24252/al-kimia.v3i2.1669

Abstract

The motorized vehicle activities could result air pollution. One of the pollutan emitted from fuel process is lead which might be reduced by using Bogenvil plants (Bougainvillea spectabilis Wild). Bogenvil were planted in a 1 x 1,5 meter square sized green house where there is a particular hole to flow exhaust fume of motorized vehicle for an hour in each 3, 6, 9 and 12 day after the first exposure. The result shows that Bogenvil leaves have ability to absorb Pb metal emitted from vehicle in response  to the exposure time. The highest accumulation of Pb in the leave is 0,469 mg/Kg with exposure time of 12 days. For this reason, the Bogenvil plant can be used as bio- accumulator of timbale metal in the air.
Waktu Dan Suhu Optimum Dalam Produksi Asam Oksalat (H2c2o4) Dari Limbah HVS Dengan Metode Peleburan Alkali Nurul Nurul; St. Chadijah; Kurnia Ramadani
Al-Kimia Vol 5 No 1 (2017): 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.v5i1.2847

Abstract

Waste paper HVS can be used as raw material for the manufacture of oxalic acid containing 63 % cellulose. This study aims to determine the optimum time and temperature in the production of oxalic acid from waste paper with alkali fusion method. Oxalic acid can be made using an alkaline solution ( NaOH 40 % ) with multiple stages such as hydrolysis, filtration, precipitation with CaCl2, acidification with H2SO4 and efflorescence. The time variation used are 60, 70, 80 and 90 minutes. While the temperature variation used is 75oC, 90oC, 105oC and 120oC. From the research that has been done by using waste paper as much as 15 grams of HVS, the optimum time is on the 70th minute and the fusing temperature obtained by the temperature of 105oC. Weight of oxalic acid crystals obtained an average of 1.8043 g and yield of oxalic acid after permanganate test is obtained by 6.8537 %.
Sintesis Membran Silika Kitosan Dari Abu Ampas Tebu (Bagasse) Sjamsiah Sjamsiah; Kurnia Ramadani; Hermawan Hermawan
Al-Kimia Vol 5 No 1 (2017): 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.v5i1.2857

Abstract

Membrane is a polymer layer that can be used in the process adsorbsi metal ions. Membrane can be synthesized from silica dust bagasse that termodifikasi kitosan. The purpose of this research is to know the impact of the addition of a variety of silicate on the characteristics of the membrane silika-kitosan the bagasse to the adsorpsi metal ions Pb. The content of silica in the bagasse to 73, 80 %. Membrane kitosan-silika be made with different variations of the composition of which is 1 : 1 ; 1 : 1, 5 ; 1 : 2 ; 1 : 2, 5 and 1 : 3 and the ability of the adsorpsi the metal Pb in a row of 41 %, 43, 76 %, 54, 88 %, 38, 36 % and 39, 6 %.. The application of membrane to the process adsorpsi metal ions Pb by membrane said with a ratio of 1 : 2 to concentrate Pb the beginning of the 50 parts per million. The use of membrane to the process readsorpsi to do with how to choose a membrane that has the adsorpsi of the membrane with a ratio of 1:2 be able to absorb metal Pb of 1 ppm. Membrane that has been used can be used with traffic readsorpsi, 2 % in the membrane of every 1 : 2.
Pemanfaatan Limbah Cangkang Kerang Hijau (Perna Viridis) Menjadi Kitin Sebagai Biokoagulan Air Sungai Syamsidar HS; Ramayana Ramayana; Kurnia Ramadani
Al-Kimia Vol 5 No 1 (2017): 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.v5i1.2859

Abstract

This study aims to determine the optimum weight of chitin that used as biocoagulant of river water. The water sample is taken from Kajenjeng river and the chitin used for research are isolated from green mussels (Perna viridis) shell powder through three steps such as deproteination by NaOH 3%, demineralization by HCl 1,25 N and depigmentation by NaOCl 4%. Then, the obtained chitin are contacted into water with variation of 0,25 gram; 0,5 gram; 0,75 gram and 1 gram in an hour. The result showed that optimum weight of chitin for COD determination, total hardness, calcium and turbidity is 0,75 gram, while optimum weight of chitin for magnesium determination is 0,5 gram.
Sintesis Zeolit dari Abu Layang dengan Metode Hidrotermal dan Uji Adsorptivitas Terhadap Logam Timbal (Pb) Rismang Rismang; Syamsidar HS Syamsidar HS; Kurnia Ramadani
Al-Kimia Vol 5 No 2 (2017): December
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.v5i2.3394

Abstract

Synthesis of zeolite from fly ash obtained from Jeneponto Bosowa energypower plant have been conducted by hydrothermal method. This study was conducted to determine the characteristics of a synthetic zeolite fly ash and synthetic zeolite adsortivitas to metallic lead (Pb). Fly ash which is the main source of silica prepared by the process of concentration variations reflux with HCl (2M; 3M; 4M and 5M). Manufacture of sodium silicate solution by dissolving NaOH fly ash into the proportion of 10 ml per 1 gram of fly ash. Synthesis process by adding sodium aluminate into a solution of sodium silicate with a ratio of 1: 1 and then put in an autoclave as a hydrothermal process at a temperature of 120 ° C for 2 hours. Hydrothermal product obtained is characterized by X-Ray Diffraction (XRD) to determine the type and intensity of the zeolite crystals obtained from the synthesis process. XRD analysis results showed the highest intensities are in the process of reflux 5M with type zeolite obtained in the form of zeolite ITQ-34, zeolite (K, Ba) -G, L, sodalite and alumina-silica minerals such as eucryptit and aluminum oxide. The resulting zeolite able to absorb the metals Pb2+ at 99.04%, which is made with a concentration of 20 ppm of 50 mL with a mass of 1 gram of zeolite.
Synthesis and Characterization of Bagasse (Saccharumofficinarum L.) Silica Gel Modified Diphenylcarbazone Rismawaty Sikanna; Dwi Nur Assyifah Rajmah; Kurnia Ramadani; Musafira Musafira; Arfiani Nur; Amalyah Febryanti
Elkawnie: Journal of Islamic Science and Technology Vol 7, No 1 (2021)
Publisher : Universitas Islam Negeri Ar-Raniry Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v7i1.9239

Abstract

Abstract: Bagasse is a solid waste from the sugar cane milling process in the sugar industry. The waste can be used as an ingredient in making silica gel which functions as an adsorbent. This can be done by changing its chemical structure composition to increase its role and function. This study aims to determine the characteristics of silica gel synthesized from bagasse (Saccharumofficinarum L.) and modified using diphenylcarbazone as much as 0.24 g with sol-gel technique. The characterization results obtained from Fourier transform infrared (FTIR) analysis of diphenylcarbazone modified silica gel, namely the absorption of Si-OH, Si-O-Si groups supported by the appearance of C꞊O, C꞊N, NH, and N꞊N groups. Characterization using x-ray diffraction (XRD) showed a change in amorphous silica to crystals, with the results obtained showing a crystal size of 41.468 nm.Abstrak: Ampas tebu merupakan limbah padat yang berasal dari proses penggilingan tebu pada produksi gula. Limbah tersebut dapat dimanfaatkan sebagai bahan pembuatan silika gel yang berfungsi sebagai adsorben. Hal tersebut dapat dilakukan dengan mengubah komposisi struktur kimianya agar dapat meningkatkan peran dan fungsinya. Penelitian ini bertujuan untuk mengetahui karakteristik silika gel yang disintesis dari ampas tebu (Saccharumofficinarum L.) dan dimodifikasi menggunakan difenilkarbazon sebanyak 0,24 gr dengan teknik sol-gel. Diperoleh hasil karakterisasi dari analisis fourier transform infrared (FTIR) terhadap silika gel termodifikasi difenilkarbazon menunjukkan adanya serapan gugus Si-OH, Si-O-Si yang didukung dengan pembentukan gugus C꞊O, C꞊N, N-H, dan N꞊N. Karakterisasi menggunakan difraksi sinar-x (XRD) menunjukkan perubahan silika amorf menjadi kristal dengan hasil yang diperoleh memperlihatkan ukuran kristal sebesar 41,468 nm.
Performance Analysis of Neighborhood Component Analysis on Support Vector Machine in Greenhouse Gas Emission Classification Gustriza Erda; Kurnia Ramadani
Journal of Mathematics, Computations and Statistics Vol. 7 No. 2 (2024): Volume 07 Nomor 02 (Oktober 2024)
Publisher : Jurusan Matematika FMIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/jmathcos.v7i2.4305

Abstract

The heatwave phenomenon has hit several countries in various parts of the world, caused by climate change. Climate change leads to greenhouse gas emissions increasing beyond the limits set by the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report Global Warming Potentials. This final project uses a combination of Neighborhood Component Analysis (NCA) and Support Vector Machine (SVM) methods with linear, polynomial, Radial Basis Function (RBF), and sigmoid kernel functions. The purposes of this final project are to evaluate the performance of NCA on SVM and to determine the best kernel function in this combination. Based on the analysis, it was found that classification using a combination of NCA and SVM methods can reduce variables, with the best kernel function being the Polynomial kernel function. This is because the analysis using the Polynomial kernel function achieved the highest accuracy values for training data, testing accuracy, and F1-Score, which are 98,96%, 99,15%, and 98,98% respectively. Additionally, the training analysis time and testing analysis time were the shortest at 0,15 seconds and 0,04 seconds.
Formulasi Sediaan Hair Tonic dari Kombinasi Ekstrak Etanol Daun Sirsak (Annona Muricata L.) Dan Ekstrak Lidah Buaya (Aloe vera) Sjamsiah, Sjamsiah; Andriani, Titik; Irmawati, Ekha; Ramadani, Kurnia
Chimica et Natura Acta Vol 12, No 3 (2024)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cna.v12.n3.49604

Abstract

Sediaan penumbuh rambut alami telah menjadi pilihan paling populer karena diolah dari berbagai bahan alami dan mempunyai banyak manfaat dan efek samping yang relatif kecil. Tanaman obat seperti daun sirsak dan lidah buaya merupakan bahan-bahan alami yang dapat digunakan dalam pembuatan sediaan tonik rambut alami. Tujuan penelitian ini adalah untuk mengidentifikasi karakteristik tonik rambut dari berbagai ekstrak dan untuk mengetahui pengaruh ekstrak tonik rambut kombinasi ekstrak daun sirsak lidah buaya terhadap efektivitas pertumbuhan rambut pada hewan uji kelinci dengan menggunakan metode uji organoleptik, homogenitas, uji pH, uji berat jenis, uji viskositas dan uji ANOVA. Hasil penelitian menunjukkan bahwa karakteristik tonik rambut daun sirsak dan lidah buaya berwarna ‘dark olive’ dan bening, berbau khas ekstrak daun sirsak, cair, dan memiliki rasa sejuk pada kulit. Memiliki pH 5-6 dengan berat dosis berkisar antara 0,9519-0,9777 gr/cm3 dan viskositas 0,81-1,11 cPs. Tonik rambut juga memiliki efektivitas yang cukup pada pertumbuhan rambut pada kelinci, di mana persiapan terbaik ditemukan dalam persiapan F2, rasio kombinasi ekstrak adalah 2:1 dengan panjang pertumbuhan rambut rata-rata 0,93 cm.
Co-Authors Agnes Gabriela Putri Winata Amalyah Febryanti Andi Nurhikmah Arfiani Nur David Chandra Dwi Nur Assyifah Rajmah Gustriza Erda Hermawan Hermawan Indra Aulia Irmawati, Ekha Kurniawati L Ledya Novamizanti Muhammad Azwar Zulmi Muhammad Raia Pratama Putra Wibowo Musafira Nensilianti Nur Amalia P Nurul Nurul Ramayana Ramayana Ridwan Ridwan Rismang Rismang Sjamsiah, Sjamsiah St. Chadijah Suryo Adhi Wibowo Susi Diriyanti Novalina Syamsidar HS Syamsidar HS Syamsidar HS Syamsidar HS Titik Andriani, Titik