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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

Author-ID : 4137526

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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Sintesis Metil Ester dari Minyak Biji Kemiri (Aleurites Molluccana) Menggunakan Metode Ultrasonokimia Rahmawati Aziz; Aisyah Aisyah; Asriani Ilyas
Al-Kimia Vol 4 No 1 (2016): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Using the fuel oil is the basic necessary in the world now. But, the raw material cannot be updated. To ensure the availability of the fuel oil so, the newest of alternative energy is explored it. One of the ways is biodiesel which made from vegetable oil. In this research is resulted from the transesterification reaction between candlenut oil and methanol by utilizing ultrasonic equipment. This research has passed some phases, they are the determining of acid number in oil then continued by creating biodiesel from ultrasonic wave 47 kHz. Identification of FTIR and GCMS are two methods which used to analyze the component compound in biodiesel product. The conversion number that be gotten from FAME with reaction of variation time 30, 40 and 50 in succession 0,037%, 0,029% and 0,018%. The result analysis of FTIR shows some of functional groups which are special from biodiesel. While the result of GCMS analysis is known that there are 5 component compounds in biodiesel namely ester methyl palmitic acid, ester methyl olead, stearata ester methyl, linoleic ester methyl and elaidic ester methyl.

Identifikasi Komponen Minyak Atsiri Daun Kawista (Feronia limonia) dengan Metode Gas Cromatography-Mass Spectroscopy (GC-MS) Saadatul Husna; St Chadijah; Aisyah Aisyah
Al-Kimia Vol 1 No 1 (2013): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Indonesia has a vast variety of plants species which largely unexplored. Several researches have conducted to explore the potentials of the plants. However, the chemical constituents of Kawista plant have not been widely investigated. This study aimed to identify the components of the essential oil from Kawista leaves (Feronia limonia). This study consisted of two stages, namely the extraction of essential oil by distillation method and the analysis of the essential oil components by GC-MS method. The results showed that there are sixteen volatile components in the essential oil of Kawista leaves (Feronia limonia). They are 3-pentanol, 1-methyl siklopenatnol, 3methyl siklopentanol, 1,1-dimethyl 2-propenol, 4-tujanol, 2 methyl 3buten-2-ol, 1-(2-oksiranil etanon, 2-heksanon, 1-butanone cyclohexyl, 3-methyl 2 pentanon, 1-heksanal, 2-heksenal, 1-ethyl acetaldehyde, 2,5-tetrahidrodimethyl furan and γ-terpinen.

Fitoremediasi Tanaman Rumput Benggala (Panicum Maximum Jacq) Terhadap Logam Kadmium (Cd) Sintetik dan Tanah TPA Tamangapa Antang Makassar A. Reskianti Wardani; Syamsidar HS; Aisyah Aisyah
Al-Kimia Vol 1 No 2 (2013): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

One way to reduce the pollution of soil is by using phytoremediation. In this study phytoremediation methods used to remediate the landfill Antang Makassar using wild plants Bengal grass (Panicum maximum Jacq) in metals accumulate Cd. Growing media used were pure land Antang landfill waste with the addition of a synthetic variation of Cd concentration of 2 ppm, 4 ppm, 6 ppm, 8 ppm and pure contaminated soil without the addition of synthetic waste. From the results obtained, the lower Cd concentrations of synthetic wastewater were added, the higher the absorption, the absorption maximum occurs on the addition of synthetic wastewater with concentration of 4 ppm Cd on day 7, is 0.0608 mg/Kg.

Sistem Pengolahan Air Laut Menjadi Air Minum Menggunakan Tenaga Matahari Iswadi Iswadi; Aisyah Aisyah
Al-Kimia Vol 1 No 2 (2013): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Has done research about the system of purification of sea water into drinking water using solar energy. Utilization of solar energy as power naturally adopts the system of evaporation that occurs in a siklur water. Design and construction of tools created in the shape of a pyramid so that the absorption of thermal energy from the Sun can be maximum. Methods of work of the system is very simple, namely the souls imprisoned in the air that the pyramid would experience an increase in temperature significantly along with the searing Sun. The temperature of the hot air in the space pyramid is causing sea water which is at the bottom (floor) pyramid will evaporate and stick on the wall side of the inside of the pyramid. With the help of gravity, the water vapour will fall in the form of green ears water down the wall of the pyramid. The water will flow through the channel leading into the shelter is. This water is not already contain salt and pure water is so that it can be consumed directly. The results showed that the pyramid with size 160 cm x 160 cm 3 mm fiberglass-wall capable of producing fresh water as much as 2,100 mL. These results have been tested in the laboratory with a result salinity = 0,0 at T = 29,4 °C; TDS = 11 mg/L, 22.2 ms/cm conductivity, at T = 29.3 °C, no taste and no smell.

Isolasi Senyawa Aktif Ekstrak Etanol Biji Alpukat (Persea americana) dan Uji Toksisitas Terhadap Artemia Salina Leach Andi Nur Fitriani Abubakar; Aisyah Aisyah; Maswati Baharuddin
Al-Kimia Vol 2 No 1 (2014): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Avocado seed (Persea americana) is recognized as one of medicinal plants. It contains several secondary metabolites, which have toxic activity. However, efforts to identify active compounds from avocado seeds (Persea americana) are still relatively rare. Therefore, isolation and toxicity assay have been conducted foward the active compound of avocado seed. Maceration one kilogram of seed dried powder by ethanol obtained 49,7464 gram extract. Separation of etanol extract by column chromatography generated 0,0698 grams of pure white needle crytal, which is positively triterpenoid based on Lieberman-Buchard test. In addition, infrared spectrum showed the existence of OH, C=C, C-C, C=O, -C-H, -CH3,-CH2 and C-O stretch, which support the presumed compound. The result of toxicity test on Artemia salina Leach showed that the extract, fraction and pure isolates of the etanol extract are toxic with LC50 values 13,274 g/mL; 9,528 g/mL and 8,128 g/mL, respectively.

Variasi Konsentrasi Aktivator Asam Sulfat (H2SO4) pada Karbon Aktif Ampas Tebu Terhadap Kapasitas Adsorpsi Logam Timbal Asrijal Asrijal; St Chadijah; Aisyah Aisyah
Al-Kimia Vol 2 No 1 (2014): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Bagasse is a waste-disposal which can contaminate the ambient surroundings. In order to ward off the massive impact, a method which is considered to be good is that to turn it into adsorbent in a process of lead-metal adsorption. This research aims to know the concentration of lead-metal that can be adsorbed by an active carbon and to know the effect of H2SO4 activator on the adsorption capacity of bagasse towards the lead-metal. The activated carbon, was derived from bagasse in three phases namely preparation, carbonization, and activation. The bagasse was carbonized in temperature of 400oC. It was then activated by H2SO4 in concentration of (0%, 5%, 10%, 15%, and 20%) for 24 hours, and heated to 500 oC. The adsorption was performed during one hour by utilizing 150 rpm shaker. The analysis of lead concentration using atom adsorption spectrophotometer (AAS) showed that the inactivated carbon performed the best adsorption with the concentration of lead adsorbed was to 9.8485 mg/L and the capacity of adsorption was to 0.197 mg/g.

Sintesis Etil Ester Dari Minyak Biji Kemiri (Aleurites molluccana) Menggunakan Metode Ultrasonokimia Yunizar AL; Aisyah Aisyah; Suriani Suriani
Al-Kimia Vol 3 No 2 (2015): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

The availability of the fuel oil in the world are declining, so that alternative energy is needed to meet the needs of the fuel. One of the alternative energy is biodiesel (ethyl/methyl ester). The research aimed to determine the optimal conversion value of ethyl ester, to identify ester components and their concentration. The biodiesel was produced from candlenut oil (Aleurites mollucana) ethanol by the ratio of 1:6 using 0.5% KOH catalyst which reacted by utilizing ultrasonic wave (47 kHz) for 45, 60 and 75 minutes. Biodiesel conversion value were 3.9%, 1.6% and 1.2% respectively. The biodiesel obtained then were analyzed by FTIR and result the pattern of fatty acid ethyl esters. In addition, analysis by GC-MS revealed the concentration under variation times of ethyl palmitate, ethyl linoleic, ethyl oleic and ethyl stearic from variation time 45, 60 and 75 minutes. They were 6.34%, 1.76% and 1.56%), (25.94%, 6.46% and 7.46%), (31.42%, 8.17% and 8.79%) and 2.13%.

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

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

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

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.

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

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