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Al-Kimia

al-kimia
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Published by Universitas Islam Negeri Alauddin Makassar

ISSN : 23022736 EISSN : - DOI : -

Core Subject : Science,

Chemistry

Al-Kimia is a journal of chemistry that published by Department of Chemistry, Faculty of Science and Technology UIN Alauddin Makassar. The journal is published twice a year on January-June and July-December. This journal encompasses original research articles in all aspects of chemistry and related area. The journal, which was firstly published in July 2013, is a forum for communication of research results, review the results of research, methodologies and new approaches in research related to chemistry in Indonesia.

Arjuna Subject : -

Articles 238 Documents

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Bahan Utama Tongkat dan Tali Tukang Sihir Fir’aun Berubah Menjadi Ular adalah Senyawa Merkuri Barorotul Ulfah Arofah; R. Arizal Firmansyah; Sofa Muthohar
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.v6i1.4334

Penelitian ini membahas tentang kata ‘air raksa’ yang terdapat dalam Tafsir Al-Maraghi. Imam Musthofa Al-Maraghi memberikan penafsiran pada surat al-A’raf ayat 116 dan Thaha ayat 66 bahwa perubahan tongkat dan tali menjadi ular karena ada air raksa dan bahan kimia lainnya. Kedua ayat tersebut bercerita tentang kisah Musa dan para tukang sihir Fir’aun yang menjelaskan bahwa pada saat tukang sihir Fir’aun melemparkan tongkat dan tali, tiba-tiba terlihat merayap menyerupai ular pada surat Al-A’raf ayat 116 dan Thaha ayat 66. Mengingat Tafsir Al-Maraghi adalah kitab tafsir yang relevan dengan kemajuan ilmu pengetahuan dan teknologi, maka dalam penafsirannya seringkali memadukan dengan ilmu sains, termasuk kedua ayat tersebut. Penjelasan dari penafsiran tentang peristiwa tersebut masih sangat kurang, sehingga belum bisa dijadikan acuan. Oleh karena itu, peneliti tergugah untuk menganalisis kata ‘air raksa’ tersebut. Jika penelitian ini tidak dilakukan, maka masyarakat akan senantiasa taklid (mengikuti tanpa mengetahui dasar/kebenarannya) terhadap penafsiran al-Maraghi. Peneliti menggunakan metode pembahasan deskriptif kualitatif dan induktif dalam melakukan analisis. Artinya, selain mengumpulkan data-data primer dan sekunder, peneliti juga melakukan miniatur penelitian yang dapat menunjang data-data primer. kata ‘air raksa’ dalam penafsiran Al-Maraghi. Selain itu, juga agar kitab tafsir Al-Maraghi dapat menjadi acuan bagi semua kalangan. Setelah melakukan penelitian, ternyata penafsiran Al-Maraghi benar. Perubahan tongkat dan tali tukang sihir Fir’aun menjadi ular karena ada air raksa. Namun, air raksa tersebut dalam bentuk garam, yaitu garam merkuri (II) tiosianat (Hg(SCN)2).

Pengaruh Konsentrasi Aktivator Asam Klorida (HCl) Terhadap Kapasitas Adsorpsi Arang Aktif Kulit Buah Kakao (Theobroma cacao. L) Pada Zat Warna Methanil Yellow Sitti Arung; Muh. Yudi; St Chadijah
Al-Kimia Vol 2 No 1 (2014): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Cocoa’s peel is a waste which usually burned, stacked or disintegrated and can make pollution to the environment. This condition motivates the researcher to produce the value-added product from the cocoa’s peel, such as activated carbon and as well as it can solve the environmental problems. This research aims to know the influence to use variation of concentration of activator HCl whice produces the optimum adsorption capacity from charcoal active of cocoa’s peel to the substance color of methanil yellow. Active carbon which is used in this research comes from cocoa’s peel which granular types with standard -100+40 mesh. Carbon is activated by physics in furnace with 600°C heat during 2 hours and is activated by chemistry with submerged of HCI 1M, 2M, 3M, 4M and 5M during 24 hours. The result of this research shows that optimum concentration in HCI 1M with adsorption capacity from charcoal active of cocoa’s peel is as large as 1,572 mg/g. Whereas knowing the influence of activator is used tabulation method by statistically, where we can get FHitung 0,003 is smaller from FTabel 10,127. It explains that H0 is accepted to reject H1. Therefore, it can conclude that there is not significant influence to use variation of concentration of activator HCl to adsorption capacity of charcoal active from cocoa’s peel in substance methanil yellow.

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.

Adsorpsi Karbon Aktif dari Sabut Kelapa (Cocos Nucifera) Terhadap Penurunan Fenol Astriah Abdullah; Asri Saleh; Iin Novianty
Al-Kimia Vol 1 No 2 (2013): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Coconut coir can be used as an activated carbon for phenol removal, because of carbon element which is containing in Coconut coir make it to own a potency as an activated carbon. Research on activated carbon adsorption of phenol to the decline of coconut coir (Cocos nucivera) has been performed. This study begins with the dehydration and carbonization stage. Coconut coir activated carbon with 3 activator namely sulfuric acid (H2SO4), sodium hydroxide (NaOH) and zinc chloride (ZnCl2). Coconut coir activated carbon in this study using a variable dose of 500 mg carbon, 1000 mg and 1500 mg. This study aimed to determine the characteristics of the water content, the adsorption capacity of phenol on activated carbon from coconut husk carbon activation results and determine the maximum adsorption capacity of activated carbon from coconut husk carbon in the adsorption of phenol. Activators most good at absorbing phenol is sodium hydroxide (NaOH) with the absorption efficiency of 93.01% at a mass of 1.5 g.

Identifikasi dan Karakterisasi Senyawa Bioaktif Antikanker dari Ekstrak Etanol Kulit Batang Kayu Bitti (Vitex cofassus) Nuraini Nuraini; Asriani Ilyas; Iin Novianty
Al-Kimia Vol 3 No 2 (2015): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Bitti wood (Vitex cofassus) is one of the plants in Verbenaceae family and known by the people of South Sulawesi as the building material. The aims of this research is to identify and characterize the anticancer bioactive compound in ethanol extract of vortex Bitti wood (Vitex cofassus) and to determine the bioactivity value. This research uses extraction and fraction method, identification uses thin layer chromatography (TLC) and phytochemical test to know metabolism secunder and characterization with FTIR. The result from isolation shows that the amorf shape with 18 mg has white and yellow colour. The purification is conduted by using spectroscopy test FTIR. The result shows that the crystal has flavonoids compound which is solid with phytochemical test like positive product by using FeCl3 5%, NaOH 10% and H2SO4 P. Thick extract, fraction combination and amorf continued with toxicity test with the animal test Artemia salina Leach it uses Brine Shrimp Lethality test (BST) method. LC50 value which is gotten the three samples is thick extract 29,51 ppm, combination fraction 169,82 ppm and amorf 562,34 ppm.

Hidroksiapatit dari Tulang Ikan Tuna Sirip Kuning (Tunnus albacores) dengan Metode Presipitasi Mutmainnah Mutmainnah; Sitti Chadijah; Wa Ode Rustiah
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.v5i2.3422

Indonesia as one of the biggest tuna fish produsers in the world, produce tuna fish bones large enough. Since tuna fish bone contain high calcium it is potentially to be the raw material of hydroxyapatite. Hydroxyapatite are inorganic compounds constituent of bones and teeth has the moleculer formula Ca5(PO4)3OH. Synthesis of hydroxyapatite can be done with precipitation method through tuna fish bone calcination process at the temperature 900°C for 5 hours to obtain calcium compounds in the form of calcium oxide. Calcium wich has been obtained added phosphoric acid 0,6 M with flow rate/rapid 1 mL/minute. Controlled synthesis process parameters are pH 10 of solution. Yield of hydroxyapatite generated after synthesis with of the precipitation time 12 hours are of 91.15%. hydroxyapatite product obtained was analyzed by FTIR(Fourier Transform Infrared) and XRD (X-Ray Diffraction). FTIR analysis indicate the presence of OH groups, PO4 and CO3. Based on the resulting diffraction of XRD analysis, crystallite size obtained each of 211.29 nm structure is hexagonal. Scherrer method was used to obtain crystallite size.

Pengaruh Penambahan Ammonium Sulfat Terhadap Kadar Serat dan Ketebalan pada Nata de Soya dari Limbah Cair Tahu Ismawanti Ismawanti; Maswati Baharuddin; Wahyu Rizandi
Al-Kimia Vol 1 No 1 (2013): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

The research aimed to know the production of cellulose in tofu liquid waste, the effect of adding ammonium sulfate to the nata de soya, and the quality nata de soya produced from Tofu Liquid Waste. The parameters used are the determination of the thickness and weight, measure of water, and fiber test of nata de soya. By using variations of the addition of ammonium sulfate 10 g, 15 g, 20 g, and 25 g. 35 grams of sugar in 500 mL of tofu liquid waste, starter bacteria Acetobacter xylinum as much 100 mL, and fermented for 14 days at a temperature of 28-30oC. The quality nata de soya highest of the addition 15 grams of ammonium sulfate with a thickness of 1.7 cm, weight 231.0 grams, the lowest water content of 94.23% and the highest fiber content of 2.41%.

Desain Elektroda Selektif Ion Untuk Logam Timbal (II) (ESI-Pb (II)) Menggunakan Ionofor p-t-Butilkaliks [4] Arena Awaluddin IP; Abd. Wahid Wahab; Maming Maming
Al-Kimia Vol 3 No 1 (2015): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

This study aims to determine the design pattern ESI-Pb (II) with ionophores pt-butilkaliks [4] arena. In this study, ion selective electrode is designed for the determination of lead (II) (ESI-Pb (II)) using ionophores pt-butilkaliks [4] arenas and diimmobilasi on a matrix of polyvinyl chloride (PVC) in the membrane ESI-Pb (II). The results showed a design pattern ESI-Pb (II) with ionophores pt-butilKaliks [4] arena is best to ESI with membrane composition (% by weight), namely: (pt-butilKaliks [4] arena: KTCPB: DOS: PVC) is 3 : 2: 60: 35 with the Nernst factor: 27.61 mV / decade

Analisis Kualitas Briket Serbuk Gergaji Kayu Dengan Penambahan Tempurung Kelapa Sebagai Bahan Bakar Alternatif Asri Saleh; Iin Novianty; Suci Murni; Andi Nurrahma
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.v5i1.2845

Increasing fuel and liquid gas prices make this energy source is no longer cheap. Therefore, it is necessary to create an alternative energy resource that can be used to replace the role of fuel and gas. Waste sawdust and coconut shell has a huge potential that can be used as raw material charcoal briquettes. The purpose of this research is to improve the quality of sawdust briquettes with the addition of coconut shell charcoal. To improve the quality of charcoal briquettes, the addition of coconut shell charcoal with a variation of 20%, 30%, 40%, 50% and 60% of the weight of sawdust briquette charcoal. Authoring process is done by burning coconut shells directly and roasting methods to sawdust. Adhesives are used as much as 50%. The calorific value generated in sawdust briquettes with materials: coconut shell at a concentration of 100% is 5622.7769 cal/gram, a concentration of 80: 20% is 6504.67785 cal/gram, the concentration of 70: 30% is 6624.09305 cal/gram, the concentration of 60: 40% is 7017.5178 cal/gram, a concentration of 50: 50% is 7288.7523 cal/gram and 40: 60% is 7386.4805 cal/gram. Overall, the quality of sawdust briquettes with palm shell charcoal is quite good, so it can be used as an alternative fuel

Pengaruh Suhu Hidrolisis Terhadap Kadar Glukosa yang Dihasilkan dari Serat Daun Nanas Muhaimin Muhaimin
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.v6i1.4907

The purpose of this study was to determine the effect of temperature on glucose levels produced during the process of hydrolysis of pineapple leaves using 0.5M of sulfuric acid catalyst. The temperature used in the hydrolysis process is 30 °C and 120 °C while the time variation used for the determination of glucose is 0.15,45,75,105,135 minutes. The method of glucose analysis used is to use is phenol-sulfuric acid to determine total glucose. The results showed that the highest glucose level was achieved at 120 °C with a concentration of 15.214,49 ppm at 105 minutes. While the lowest glucose levels achieved at a temperature of 30 °C with levels of 399.33 ppm at 0 minutes.

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