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All Journal Alchemy : Journal of Chemistry Teknosains: Media Informasi Sains dan Teknologi Jurnal Sains Teh dan Kina Al-Kimia Chimica et Natura Acta Walisongo Journal of Chemistry Jurnal Fisika dan Terapannya Amina
Aisyah Aisyah
Universitas Islam Negeri Alauddin Makassar
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Energy Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Fitoremediasi Tanaman Akar Wangi (Vetiver zizanioides) Terhadap Tanah Tercemar Logam Kadmium (Cd) Pada Lahan TPA Tamangapa Antang Makassar Alfia Patandungan; Syamsidar HS; Aisyah Aisyah Aisyah
Al-Kimia Vol 4 No 2 (2016): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (346.543 KB) | DOI: 10.24252/al-kimia.v4i2.1676

Abstract

One example of soil contamination on land landfill is (TPA) Makassar. The method of prevention is phytoremediation of the contaminated land. This study examined the ability of the plant will vetiver (Vetiver zizanioides) in reducing the levels of Cd in the soil. To increase the potential of these plants to remediate Cd, the soil where the plants grow is combined with compost in which bacteria within the compost might improve the absorption of Cd. Planting medium used is pure soil and compost from Tamangapa Makassar. Research carried out for 28 days with a variation of the study. The composition of the media that the contaminated soil (TT) metal kadmium  (Cd)  and compost (K) with a ratio of 100% (TT): 0 K, 5 (TT): 1 (K), 4.5 (TT): 1.5 (K) and 4 (TT): 2 (K). The results shwed that vetiver plants were able to absorb Cd of 0,298 mg/Kg so it can be concluded that the composition of the planting medium with a combination of compost less significant because the combination of the contaminated soil with compost are less precise in  helping vetiver plants accumulate or reduce metal pollution cadmium in  contaminated soil Tamangapa Antang Makassar.
Karakterisasi Zat Warna Tomat (Solanum lycopersicum) FRAKSI Metanol:N-Heksan Sebagai Photosensitizer Pada Dye Sensitized Solar Cell (DSSC) Nur Hasbi Wahab; Aisyah Aisyah Aisyah; Suriani Suriani
Al-Kimia Vol 4 No 2 (2016): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1208.231 KB) | DOI: 10.24252/al-kimia.v4i2.1678

Abstract

One of the potential alternative energy to be developed to overcome energy crisis in the world is an DSSC. This research aimed to make a series of Dye Sensitized Solar Cell (DSSC) using an organic dye from crude extract of tomato as a photosensitizer. The dye obtained from the maceration by of ultrasonic waves using methanol. Separation was done by KKCV using eluent of methanol: n-hexane (3: 7, 1: 1, 7: 3). The best efficiency value (Ƞ) in the series of DSSC that results from the fraction methanol: n-hexane (1:1) was 0.0249%. Characterization using spectrophotometer UV-Vis showed a maximum absorption at wavelength of 447 nm which is the absorption of carotene  compound. FTIR analysis showed that samples generally have -CH2-, C=C and OH strecth wich are the characteristic of carotene compound. GCMS analysis showed that dye components which estimated is dihydroxy lycopene of the retention time 10.93 with a molecular ion peak at m/z 91.
Produksi Etil Ester Dari Minyak Dedak Padi (Oryza Sativa) Menggunakan Reaktor Ultrasonik Aisyah Aisyah; Riskayanti Riskayanti; Iin Novianty; Asriyani Ilyas; Sjamsiah Sjamsiah; Sitti Chadijah
Al-Kimia Vol 6 No 1 (2018): 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.v6i1.3036

Abstract

Indonesia as the third largest grain producer in the world produces large amounts of bran. High contain Free Fatty Acid (FFA) in rice bran oil causes it can be converted into the fatty acid ethyl esters (biodiesel) by esterification and transesterification methods. The rice bran oil was obtained by rice bran extraction using n-hexane. The esterification process was catalyzed by HCl. In this study, the transesterification process to convert triglycerides into ethyl esters (biodiesel) was conducted by the addition of KOH as a neutralizer and a catalyst Oil and ethanol by ratio 1:6 using 0,5% KOH  as catalysator were reacted by utilizing 47 kHz ultrasonic wave for 45, 60 and 75 minutes. Biodiesel conversion value obtained were 49,23%; 70,55% and 52,04% respectively. Biodiesel product spectrum was analyzed using FTIR and GCMS instrument. The density, viscosity and flash point is also measured.  FTIR analysis on all variations give similar data spectrum, where the ethyl ester products are characterized by typical bands at specific frequencies such as -C=O; -C-C; -C-H (sp3) and = C-H (sp2) stretch. Based on the data from GCMS spectrum, the product components are ethyl palmitate, ethyl linoleate, ethyl stearate and ethyl oleate. 
Pengaruh Kandungan Senyawa pada Ekstrak Daun Ketapang n-Heksan, Etil Asetat, Metanol dan Campuran Terhadap Nilai Efisiensi Dye Sensitized Solar Cell (DSSC) Aisyah Aisyah; Kurnia Arini Putri; Suriani Suriani; Iswadi Iswadi
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.v5i2.3856

Abstract

The needs of electrical energy that increase year by year cause electrical energy crisis. Alternative energy sources which are potential to be developed as a substitute of fossil fuels are organic solar cells or DSSC (Dye Sensitized Solar Cell). The purpose of this study is to determine the value of efficiency resulting from Ketapang leaf extract and to determine the effect of compound content in Ketapang leaf extract toward the value of DSSC efficiency. This study investigate the efficiency value of the DSSC which are senzitized by the N-hexane, ethyl acetate, methanol extract of the Ketapang leaf and the mixture extract. The compounds from each axtract are characterized used UV-Vis and FTIR. The measurement results of the efficiency value from n-hexane of Ketapang leaf extract, ethyl acetate, methanol and the mixture were respectively 0.0051%, 0.09%, 0.12% and 0.22%. The results of UV-Vis characterization with maximum wavelength were respectively 667 nm, 665.9 nm, 665.9  nm and 209 nm. The FTIR identified an auxchrome group such as -OH,  C-N, -NH, and C-O as well as chromophore groups such as C=O and C=C. These data support that the existence of flavonoid and alcaloid compound in the mixture extract generate significant efficiency value.
PERBANDINGAN EFISIENSI SEL FOTOVOLTAIK BERBASIS DSSC DARI EKSTRAK ZAT WARNA SEGAR DAN KERING TUMBUHAN SECANG, TARUM DAN PACAR KUKU Iswadi Ibrahim Patunrengi; Aisyah Aisyah
Teknosains Vol 14 No 1 (2020): JANUARI
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/teknosains.v14i1.12938

Abstract

Solar energy is the most abundance energy source in the world. However, it is used only limited amount for energy conversion. Photovoltaics system is one method to harvest energy from the sun and convert it to electricity. In this research, the fresh and dried extract of organic dyes from Secang wood; Tarum leaves (Indigofera tinctoria) and Pacar Kuku leaves (lawsonia inermis L) are used as a sensitizer in solar cells. Results shows that efficiency of photovoltaic cells from fresh extract are higher than the dried one. The efficiency of fresh dyes from Secang, Tarum and Pacar Kuku are 1,26%; 0,74% and 0,21% respectively. Meanwhile, efficiency of dried extracts are 1,26%; 0,74% and 0,21% respectively.
KARAKTERISASI ZAT WARNA DAUN JATI (Tectona grandis) FRAKSI METANOL:n-HEKSANA SEBAGAI PHOTOSENSITIZER PADA DYE SENSITIZED SOLAR CELL Aminuddin Baharuddin; Aisyah Aisyah; Jawiana Saokani; Indah Ayu Risnah
Chimica et Natura Acta Vol 3, No 1 (2015)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (451.049 KB) | DOI: 10.24198/cna.v3.n1.9174

Abstract

Penyedia energi saat ini masih didominasi oleh sumber energi yang tidak dapat diperbaharui seperti batubara, minyak bumi dan gas alam. Semakin lama sumber energi ini akan semakin menipis jumlahnya di alam sehingga dibutuhkan sumber energi terbarukan. Salah satu sumber energi yang potensial dikembangkan di Indonesia adalah DSSC (Dye Sensitized Solar Cell). Dalam penelitian ini digunakan zat warna daun tumbuhan Tectona grandis sebagai photosensitizer. Zat warna diperoleh dari proses ekstraksi menggunakan alat ultrasonik dengan pelarut metanol. Pengujian DSSC dilakukan pada zat warna dalam keadaan asam (pH 6) dan keadaan basa (pH 11) serta pada hasil pemisahan KKCV menggunakan eluen n-hexana-metanol (8:2, 5:5, dan 2:8). Nilai efisiensi paling tinggi diperoleh pada hasil KKCV n-hexana:metanol 5:5 yakni sebesar 0,05127%. Karakterisasi dilakukan pada zat warna yang miliki efisensi paling tinggi dengan menggunakan UV-Vis, FTIR dan GC-MS. Hasil analisis UV-Vis menunjukkan adanya serapan pada panjang gelombang 522 nm yang merupakan daerah serapan khas antosianin. Pada pengujian FTIR didapatkan beberapa gugus fungsi yang teridentifikasi sebagai –OH, C-H, dan C=C. Hasil analisis dengan GC-MS menunjukkan fragmen puncak pada m/z 287. Secara umum hasil karakterisasi tersebut besesuaian dengan salah satu pigmen antosianin yaitu sianidin.
Potensi Energi Listrik dari Microbial Fuel Cell (MFC) Menggunakan Substrat Molase dan Bakteri Pseudomonas sp. Ilmi Wahyuni; Heri Heriyono; Aisyah Aisyah; Maswati Baharuddin; Iswadi Ibrahim Patunrengi
ALCHEMY:Journal of Chemistry Vol 10, No 1 (2022): ALCHEMY: Journal of Chemistry
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/al.v10i1.12154

Abstract

Sugarcane molasses have been reported as potential biomass to produce electricity from its metabolic processes through the microbial fuel cell (MFC) system. However, it is important to improve electrical generation by using both appropriate and readily available substrates and microorganisms. This study aimed to determine the current and potential difference as well as the power density generated from the metabolic process of the molasses substrate. A dual-chamber of MFC was arranged in series to generate electrical current. The anode chamber contained a mixture of molasses substrate, potassium phosphate buffer pH 7, and Pseudomonas sp. The cathode chamber contained 0.2 M KMnO4 electrolyte solution. Measurement of current and potential differences was conducted every 4 hours for 36 hours. The results showed that the maximum current, potential difference, and power density were 1656 mV, 1582 µA, and 1794.37 mW/m2, respectively.Keywords: dual chamber, microbial fuel cell, molasses, Pseudomonas sp.  Molase telah banyak dilaporkan sebagai salah satu sumber energi listrik yang potensial dengan menggunakan sistem microbial fuel cell (MFC). Namun demikian, produksi energi listriknya perlu ditingkatkan dengan menggunakan substrat dan mikroorganisme yang tepat dan mudah diperoleh. Tujuan dari penelitian ini adalah untuk mengetahui arus dan beda potensial serta nilai kerapatan daya yang dihasilkan dari proses metabolisme substrat molase menggunakan bakteri Pseudomonas sp. Penelitian ini menggunakan sistem MFC kompartemen ganda sebanyak dua sel yang dirangkai seri. Ruang anoda berisi campuran substrat molase, buffer kalium fosfat pH 7 dan bakteri Pseudomonas sp. Adapun ruang katoda berisi larutan elektrolit KMnO4 0,2 M. Pengukuran arus dan beda potensial dilakukan setiap 4 jam selama 36 jam. Berdasarkan hasil penelitian yang dilakukan didapatkan nilai arus, beda potensial maksimum dan kerapatan daya masing-masing sebesar 1656 mV, 1582 µA dan 1794,37 mW/m2.Kata kunci: dua sel, microbial fuel cell, molase, Pseudomonas sp
Determination and Characterization of Lycopene Compounds from N-Hexane Fraction of Tomato Fruit (Solanum Lycopersocum Grandyfolium) by using Fourier Transform Infrared and UV-Vis Spectrophotometry Arfiani Nur; Hajrah Hajrah; Asriani Ilyas; Aisyah Aisyah; Maria Cecilia Lezama Escalante
Walisongo Journal of Chemistry Vol 5, No 1 (2022): 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.v5i1.10885

Abstract

Determination and characterization of the lycopene content of the n-hexane fraction from potato-leaved tomato (Solanum lycopersicum grandyfolium) using Fourier transform infrared (FTIR) spectrophotometry and UV-Vis spectrophotometry. This study aims to determine the levels and characterization of lycopene compounds from potato-leaved tomato fruit using FTIR and UV-Vis spectrophotometers. The methods in this research include maceration, liquid-liquid extraction, crystallization with antisolvent, chromatography with three eluent systems, identification of lycopene compounds, and characterization of lycopene compounds using FTIR and UV-Vis. The results showed the presence of lycopene compounds based on the spectrum with absorption peaks at wave numbers 2924, 18 cm-1 and 2863, 66 cm-1 indicating C-H (stretching); 1637, 43 cm-1 indicating C=C alkene; and the wave numbers of 1461, 63 cm-1 and 1422, 46 cm-1 indicating the presence of a CH2 (bending) functional group. The results of UV-Vis spectrophotometric characterization showed the presence of lycopene compounds at three main wavelengths, namely at 445, 467, and 500 nm. The level of lycopene compounds produced from the n-hexane extract of potato-leaved tomato fruit was 7.25 mg/gram
DESAIN DAN KONSTRUKSI PENYULING AIR ASIN MENJADI AIR TAWAR (SOLAR STILL) YANG MUDAH, MURAH DAN MEMILIKI EFISIENSI TINGGI Iswadi I. Patunrengi1; Aisyah Aisyah; Muh Said L; Nurul FA
JFT : Jurnal Fisika dan Terapannya Vol 7 No 2 (2020): DESEMBER
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v7i2.18501

Abstract

Solar still design and construction have been carried out with two models, namely the pyramid model and the prism model. The prism model is proposed as a new model that is easier and cheaper in the construction process as a potential replacement for the previous model that is more complicated. While the pyramid model is a control model. The size of the container or raw water bath used is 75 cm x 75 cm x 10 cm. the results showed that the volume of water evaporated pyramid model more than the control model, efficiency also gave a better value of 27.55% compared to 24.10% for the control model.
Co-Authors A. Reskianti Wardani Abd. Rasyid Syamsuri Afandi, Irwan Alfia Patandungan Aminuddin Baharuddin Andi Nur Fitriani Abubakar Arfiani Nur Asriani Ilyas Asriani Ilyas Asriyani Ilyas Didin Mujahidin Firnanelty, Firnanelty Hajrah Hajrah Heri Heriyono Holyness Nurdin Singadimedja Iin Novianty Ilmi Wahyuni Indah Ayu Risnah Irnaningsih Iswadi Ibrahim Patunrengi Iswadi Ibrahim Patunrengi Jawiana Saokani Kurnia Arini Putri Maria Cecilia Lezama Escalante Maswati Baharuddin Maswati Baharuddin Melati Masri Muh. Said L Nila Berghuis Tamaela, Nila Berghuis Nur Hasbi Wahab Nurul FA Rahmawati Aziz Riskayanti Riskayanti Saadatul Husna Siti Zubaidah Sitti Chadijah Sjamsiah, Sjamsiah St Chadijah Suriani Suriani Suriani Suriani Syamsidar HS Yana Maolana Syah Yoga Yuniadi Yunizar AL