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All Journal Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Jurnal Sains dan Pendidikan Fisika Alchemy : Journal of Chemistry Teknosains: Media Informasi Sains dan Teknologi Indonesia Chimica Acta Al-Kimia Jurnal Fisika dan Terapannya

Patunrengi, Iswadi Ibrahim

Jurusan Fisika, Fakultas Sains Dan Teknologi, Univesitas Islam Negeri Alauddin Makassar, Makassar, Indonesia, 92118

Author-ID : 1369761

Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Energy Materials Science & Nanotechnology Physics

Published : 28 Documents Claim Missing Document

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Articles

Title

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.

Analisis Linearitas Keluaran Radiasi pada X-Ray Mobile dengan Menggunakan Piranha Nur Mukminah R; Iswadi Iswadi; Ihsan Ihsan Ihsan
Al-Kimia Vol 2 No 1 (2014): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

The research was conducted on the linearity of the output radiation in the mobile X-ray by using Piranha. This study aimed to measure the radiation dose exposure, to determine the relationship between the increase in the voltage of the radiation dose exposure and increase the tube current to the radiation dose exposure, as well as to analyze the radiation output and linearity of the output radiation. Data collection was conducted at the Dr. Tadjuddin Chalid Hospital Makassar in radiological installation. In this study the variables that measured the radiation dose and exposure variables that change the tube current and voltage. The data obtained and analyzed to calculate the value of the output radiation and radiation output linearity in the X- ray mobile. The analysis showed that the X-ray mobile with GE brand that are in radiological installation Dr. Tadjuddin Chalid Hospital has good linearity.

Photosenzitizer dari Fraksi Metanol: N-Heksana Buah Cabe Merah (Capsiccum Annum L.) Muh Shiddiq Maming; Aisyah Aisyah; Suriani Suriani; Iswadi Iswadi
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.v5i1.2846

A research has been done on the dye components from the extract of red pepper (Capsiccum annum L) which is potentially used as photosensitizer. This study aims to determine the efficiency and the characteristics of the dye. The efficiency is measured on a cell made of glass ITO 100 Ω and a technical semiconductor TiO2. The pepper extract obtained from the ultrasonic maceration by methanol which then purified using a chromatography column using the ratio of 1: 4, 1: 1 and 4: 1 methanol:n-hexane. The results showed that the efficiency of the crude extract, fraction by ratio of 1:4; 1: 1 and 4: 1 are respectively 0.027%, 0.012%, 0.013% and 0.034%. Subsequently, the best efficiency fraction was characterized by using FTIR, UV-Vis and GC-MS. The wavelength of visible light obtained at 466 and 443 nm which is corresponds to the wavelength of carotene. The components indicate absorption at 1631.78 cm-1, 3008.95 cm-1 and 2992 cm-1 that are characteristic of carotenoid whereas, that of 1739 cm-1 and 3446.79 cm-1 are carbonyl and hydroxyl group of xantofil. According to the GC-MS fragmentation pattern, the carotenoid compounds identified by mass abundace at 91 and 105.

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

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.

A Natural Dye-Sensitized from Pare (Bitter Gourd) Leaves Extracts for Dye-Sensitized Solar Cell (Dssc) Wahidah Febriya Ramadhani; Suriani S Suriani S; Aisyah A Aisyah A; Iswadi I Iswadi I
Al-Kimia Vol 7 No 1 (2019): 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.v7i1.6309

The availability of energy sources is dwindling so a renewable energy which has a potential chance to be developed, such as solar panels, is needed. The use of solar panels is still quite expensive in terms of manufacturing process. For this reason, a cheap solar panel based is developed, and it is called DSSC (Dye-Sensitized Solar Cell). The use of DSSC is developed in Indonesia, a country which is famous for its biological richness. In this study, pare leaves were used as photosensitizers obtained from the extraction process of maceration by various solvents. The DSSC test was done on four extracts including N-hexane extract, Ethyl Acetate, Methanol, and Combination of the three extracts. The highest value of efficiency obtained from each extract respectively are 0,03%, 0,04%, 0,14% and 0,30%. Characterization was done by examining the UV-Vis and FTIR spectral data. The result of UV-Vis analysis shows that wavelength for N-hexane, Ethyl Acetate, Methanol, and Combined extracts are 269,1 nm, 668,0 nm, 663,9 nm, and 6631 nm, respectively. FTIR results found that the chromophore and auxochrome groups were identified on all four tested extracts, namely; C = C, C = O, -OH, and -C-H groups.

Karakterisasi Zat Warna Kayu Secang (Caesalpinia sappan L.) Fraksi Kloroform:Metanol sebagai Photosensitizer pada Dye Sensitized Solar Cell Suriadi; Aisyah; Suriani; Ibrahim Patunrengi, Iswadi
Al-Kimia Vol 13 No 1 (2025): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

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

The electricity crisis in Indonesia is caused by the decreasing supply of fossil fuels for power plants. One solution to overcome this problem is the Dye-sensitized Solar Cell (DSSC) which can convert sunlight into electrical energy by utilizing environmentally friendly organic dyes. This study has succeeded in making and determining DSSC using organic dyes derived from sappanwood extract with pH variations (4, 7, and 10). Each pH level produces efficiency values of 0.01714%, 0.05497% and 0.03174%. VLC with a chloroform: methanol ratio (5:5 and 1:9) was then characterized using UV-Vis, FTIR, and GC-MS instruments. Characterization of sappanwood dye extract using UV-Vis instrument showed absorption at wavelengths of 243, 285, 445, and 541. FTIR instrument provided information on functional groups –OH at wave number 3415.93 cm-1 and C-O-C at wave number 1255.66 cm-1 which are characteristic of isoflavonoid compounds. In addition, GC-MS instrument indicated the possibility of fragment m/z 286 at retention time 9.54 is a brazilin

Co-Authors Abd. Rasyid Syamsuri Abubakar, A. Nur Fitriani Abubakar, A. Nurfitriani Achmad Nasyori Afandi, Irwan Aisyah Aisyah A Aisyah A Aisyah Aisyah Aisyah Aisyah Aisyah Aisyah Alimuddin, Arni Almukarrama, Almukarrama Andi Nurfitriani Abu Bakar Arfiani Nur Asriyati Asriyati, Asriyati Awaluddin Iwan Perdana Buety, Ahmad Elfrida Ratnawati Elisabeth Supriyatni Firnanelty, Firnanelty Halisa, Halisa Hartina - Hartina Hartina Hasanah, Andi Uswatun Heri Heriyono Ihsan Ihsan Ihsan Ilmi Wahyuni Imran, Dzulqadri Indriani, Yunida Jusnia, Jusnia Kurnia Arini Putri Kurnia Ramadani Mabrur, Mabrur Maswati Baharuddin Muh Shiddiq Maming Muh. Said L Muhammad Sayuthi Muharam Bapa Lasang Najatul Ula Nur Mukminah R Nurul FA Nurul Fuadi Rahmaniah Rahmaniah Rezeki, Rezeki Sahara Sahara Suriadi Suriani Suriani S Suriani S Suriani Suriani Suriani Suriani Teguh Santoso Ummi Zahra, Ummi Wahidah Febriya Ramadhani Yulia Kirana Lahsmin Zelviani, Sri

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