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All Journal JIMKesmas (Jurnal Ilmiah Mahasiswa Kesehatan Masyarakat) Indonesia Chimica Acta Al-Kimia Jurnal Biotek Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Ruwa Jurai: Jurnal Kesehatan Lingkungan Helium: Journal of Science and Applied Chemistry Helium: Journal of Science and Applied Chemistry

Santi Santi

STIKes Mega Rezky Makassar

Author-ID : 2672069

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Energy Environmental Science Health Professions Materials Science & Nanotechnology Medicine & Pharmacology Public Health Social Sciences Other

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Kinetika Adsorpsi Ion Logam Pb (II) pada Karbon Aktif dengan Gelombang Ultrasonik Santi Santi
Al-Kimia Vol 3 No 1 (2015): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Adsorption capacity Increase of the activated carbon can be done with the use of ultrasonic energy-producing high chemical. Activated carbon is used to absorb the metals Pb(II) with a variety of time. Research purposes to determine the effect of variation of contact time on the adsorption of Pb(II) using rice husk activated carbon irradiated with ultrasonic waves and without irradiation. Determining the reaction kinetics model (reaction order and k values) of Pb (II) using rice husk activated carbon irradiated with ultrasonic waves. The results showed the optimum time on the adsorption process of Pb(II) by rice husk activated carbon is irradiated with ultrasonic waves were 50 minutes, whereas the adsorption process of Pb (II) by rice husk activated carbon without irradiated with wave ultrasonic is 30 minutes. Reaction kinetics of Pb(II) according to the pseudo-second-order kinetic model and the value of k2 = 0.0472 g. mg-1.min-1.

Produksi dan Uji Aktivitas Enzim Selulase dari Bakteri Bacillus subtilis Al Maratun Sholihati; Maswati Baharuddin; Santi Santi
Al-Kimia Vol 3 No 2 (2015): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Enzyme cellulose can be produced from bacteria Bacillus subtilis. This bacteria is a kind of bacteria which grounded on the genus that can degrade cellulose to glucose. Cellulase enzyme acquired different optimum pH and temperature depends on the bacteria. This research aim to produce and analyze the activity of the cellulose enzyme from bacteria Bacillus subtilis at optimum pH and temperature. The research of this enzyme cellulose derived by prolific process and rejuvenation bacteria Bacillus subtilis on the nutrition culture, nutrition selective, and nutrition production that executed by cold centrifugation to obtain extract or the enzyme cellulose at the temperature of 4°C, 3500 rpm within 15 minutes. On the determine pH with variety pH 5,6 using buffer acetat and pH 6,0; 6,5; 7,0; 7,5; and 8.0 using phosphate buffer while on the determine temperature using variety temperature 25°C, 30°C, 35°C, 40°C, 45°C, and 50°C which the next make an experiment activity enzyme cellulose by method Nelson-Somogy that measured in spectrophotometer UV-Vis of λ 540 nm. The result shows that the highest enzyme activity at optimum pH of 6, 0 is 4,3661 10ˉ3 U/mL and in optimum temperature of 30°C as is 5,6609 10ˉ3 U/mL.

Potensi Zat Warna dari Ekstrak Etanol Kayu Sappang Sebagai KalorimetriAnion Nurmala Sari; Rachma Rachma; Santi Santi
Al-Kimia Vol 5 No 2 (2017): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Dye from Sappang Tree has been isolated using ethanol as a solvent. Braziline is one of the chemical compound found in the ethanol extract. The Compound can be used as anion calorimethric due to their active sites of hydroxyl and chromophore groups. Dyes from sappang tree has been tested on 10 g of several types of saturated anions (carbonate, sulfate, phosphate, cyanide, acetate, borax, nitrite, chloride, bromide, and iodide). The results of the tests show that the color of the dye from changes in carbonate, phosphate, cyanide, acetate, nitrite, and hydroxyl. Spectrophotometer UV/Vis is used to detect the limit of cyanide anion. Metanol and acetone show positive results on the dye in cyanide anion. Detection limit of braziline is 3x10-4 M. By addition of cyanide anion, the dye has detection limit at 1x10-4 M.

Co-Authors Al Maratun Sholihati Amirah Amirah Aznawi Arlitha Akbar Indas Wari Rahman Kasmuddin Darmo Ka’bah Paharu Lisda Maulina Maswati Baharuddin Miladiarsi Nurfardila Nurfardila Nurmala Sari Putri Salsabila, Nabila Rachma Rachma Shafitri, Dian Sulfiani, Sulfiani Tabalessy, Oliviane Katherina Zindy Devi

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