Paulina Taba
Department of Chemistry, Hasanuddin University, Jl. Perintis Kemerdekaan Km 10 Tamalanrea, Makassar, South Sulawesi, Indonesia 90245

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PENGURANGAN KONSENTRASI MERAH REAKTIF-1 DARI LINGKUNGAN PERAIRAN MELALUI ADSORPSI PADA KARBON MESOPORI (CMK-1) DAN KARBON AKTIF KULIT KAKAO (Theobroma cacao) Taba, Paulina; Fauziah, St.; -, Syuwarna; Passasaran, Elis
MARINA CHIMICA ACTA Vol 5, No 2
Publisher : Universitas Hasanuddin

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This communication presents the results pertaining to the investigation conducted on colour removal of reactive red-1 (RR-1) by adsorptions on mesoporous carbon (CMK-1) and active carbon from agricultural waste (the husk of cacao), ACHC with variation of contact times, initial pH, and initial dye concentrations using a batch method. CMK-1 was synthesized using mesoporous silica (MCM-48) and sucrose as the template (structure-directing agent) and the carbon precursor, respectively. Sulfuric acid was utilized as a catalyst in the carbonization process of sucrose. After carbonization, the silica wall was dissolved in 2.5 % sodium hydroxide solution dissolved in ethanol – water (1 : 1). To synthesized MCM-48, sodium silicate was used as the silica source and a mixture of cationic surfactant (cetyltrimethyl ammonium bromide, CTAB) and neutral surfactant (Triton X-100) as the template. The mixture was heated in a polypropylene bottle at a temperature of 100 oC for 48 h. To remove most of the surfactant in as-synthesized MCM-48, 0.1 M of hydrochloride acid in ethanol-water (1 : 1) was used. The precipitate was calcined in air under static condition in a muffle furnace. The temperature was raised from room temperature to 823 K and maintained at 823 K for   10 h. ACHC was synthesized by burning the husk of cacao fruit using paddy hull and the coal produced was heated at a temperature of 350 oC and was then activated at a temperature of 560 oC. Results showed that the optimum time of adsorption for reactive red-1 on CMK-1 was the same as that on active carbon that was 4 h. Isothermal data fit well with the rearranged Langmuir adsorption model for the adsorption on CMK-1, whereas both the Langmuir and Freundlich model appear to fit the adsorption of RR-1 on ACHC. The adsorption capacity of reactive red-1 on CMK-1 was considerably higher than that on ACHC. The  adsorption  capacity of the  dye  on  CMK-1  and on ACHC at pH 4 > at pH 7 > at pH 10.   Keywords :  adsorption, reactive, red-1, CMK-1, ACHC, time, pH, concentration
SINTESIS KARBON MESOPORI, CMK-1 DAN POTENSI ADSORPSINYA ATAS SURFAKTAN DI PERAIRAN Taba, Paulina; Hala, Yusafir; -, Nashriah
MARINA CHIMICA ACTA Vol 5, No 1
Publisher : Universitas Hasanuddin

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Adsorption of sodium dodecyl benzene sulfonate (SDBS) on mesoporous carbon, CMK-1 with a variation  of the contact time, the concentration of SDBS and a variation of pH has been conducted. The concentration of SDBS before and after adsorption was determined by a UV spectrophotometer. Freundlich and Langmuir models were used to study the adsorption capacity  of SDBS by CMK-1. The Results showed that the optimum contact time was 4 hours. To know the adsorption capacity of SDBS on CMK-1, adsorption of SDBS at various consentrations and various pH were conducted at optimum contact time. From the results, it was clear that the adsorption capacity at pH of 7 > pH of 4 > at pH of 10 and  adsorption followed isoterm Freundlich. Keywords : mesoporous, carbon, adsorption, capacity
Application of TiO2 Nanotube As Photoelectrode For Corrosion Prevention Of Stainless Steel In pH Variation of NaCl Misriyani, Misriyani; Wahab, Abdul Wahid; Taba, Paulina; Gunlazuardi, Jarnuzi
Indo. J. Chem. Res. Vol 3 No 1 (2015): Edisi Bulan Juli (Edition For July)
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

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The research amis to synthesize TiO2 nanotube photoelectrode (TiO2-NT) by anodizing method. The photoelectrodes applied in photoelectrochemical system to prevent the corrosion of steel. Anodizing method carried out by preparing an electrochemical system consisting of a titanium plate as anode and Pt wire as cathode in electrolyte containing glycerol, ammonium fluoride and water. Voltage applied from the DC current source and followed by thermal treatment at a temperature of 500oC. The photoelectrode further characterized by using X-Ray Diffraction and Surface Area Analyzer. The result of anti-corrosion test of stainless steel 304 by TiO2-NT showed that photopotential value of steel shifted to the more negative value in UV light. The significant potential shift occurs at pH 8 and the corrosion rate of stainless steel 304 couple with TiO2-NT decrease reaches 1.7 times. It concluded that the photoelectrodes can be used to reduce the corrosion rate of stainless steel 304 by utilizing sollar energy as a source of UV light.
Peta Asam Lemak Berbagai Spesies Lamun (Seagrass) di Pantai Kabupaten Donggala ., Tahril; Noor, Alfian; Taba, Paulina; La Nafie, Nursiah
C H E M I C A Vol 10, No 1 (2009)
Publisher : Jurusan Kimia FMIPA UNM

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ABSTRAK Telah dilakukan identifikasi kuantitatif jenis-jenis asam lemak lamun dari spesies Thalassodendron ciliatum, Cymodocea rotundata, Cymodocea serrulata, Thalassia hemprichii, dan Enhalus acoroides. Analisis lemak contoh yang diambil di perairan kabupaten Donggala ini dilakukan dengan metode soxhlet dan analisis asam lemak menggunakan metode GC. Ternyata diperoleh variasi kandungan lemak antara 0,27 % - 1,01 %, sementara konsentrasi asam lemak jenuh yang ditemukan bervariasi antara 4,39 % - 8,03 %, asam lemak tak jenuh bervariasi antara 4,48 % - 18,39 %, dan omega 3 (EPA) bervariasi antara 0,27 % - 1,24 %. Hasil di atas, jika digabungkan bersama hasil analisis protein, fosfat, dan mineral dapat menjadi dasar untuk memperkirakan status kesuburan lamun. Kata kunci : Lamun, asam lemak, ABATRACT The quantitative analyses of fatty acids various was conducted from the seagrass Thalassodendron ciliatum, Cymodocea rotundata, Cymodocea serrulata, Thalassia hemprichii, and Enhalus acoroides speciess. The sampel takken from Donggala coast is analyses as the soxhlet method and the Gas Chromatography. The result obtained obstetrical variation of  fatty are vary among 0,27 - 1,01 %, for a while concentration of saturated fatty acids are vary among 4,39 - 8,03 %, unsaturated fatty acid are vary among 4,48 - 18,39 %, and omega 3 (EPA) are vary among 0,27 - 1,24 %. The result is it is joined with the protein, phosphate, and mineral analyses result can become basic for estimate the fertility status the sea grass. Keyword: Sea grass, fatty acid
PEMANFAATAN KARBON AKTIF TEMPURUNG KENARI SEBAGAI ADSORBEN FENOL DAN KLOROFENOL DALAM PERAIRAN E, Edwin; -, Sherliy; Liong, Syarifuddin; Taba, Paulina
MARINA CHIMICA ACTA Vol 6, No 1
Publisher : Universitas Hasanuddin

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Artikel ini menyajikan hasil investigasi yang dilakukan pada penghilangan fenol dan 4-klorofenol dari lingkungan air dengan menggunakan karbon aktif tempurung kenari. adsorben dibuat dengan mengarangkan tempurung kenari menggunakan sekam padi dan arang yang terbentuk dipanaskan pada temperatur 200 oC . hasil yang diperoleh dengan ukuran 100 – 200 mesh diaktivasi pada suhu 500 oC. penentuan konsentrasi fenol dan 4-klorofenol yang teradsorpsi pada waktu kesetimbangan adsorpsi dijadikan dasar untuk mempelajari pengaruh ph dan konsentrasi awal terhadap efektivitas adsorpsi senyawa-senyawa fenol oleh karbon aktif tempurung kenari. Persamaan Freundlich dan Langmuir digunakan untuk mempelajari isotermal adsorpsi. hasil penelitian menunjukkan bahwa waktu optimum adsorpsi fenol dan 4-klorofenol oleh karbon aktif berturut-turut adalah 135 dan 150 menit, adsorpsi kedua senyawa fenol memenuhi persamaan laju orde dua semu dengan tetapan laju 0,082 dan 0,127 g mg-1 menit-1 berturut-turut untuk adsorpsi fenol dan 4-klorofenol. isotermal adsorpsi kedua senyawa fenol memenuhi persamaan langmuir dan freundlich. kapasitas adsorpsi fenol lebih besar dari kapasitas adsorpsi 4-klorofenol.   Kata kunci :   adsorpsi, fenol, 4-klorofenol, karbon aktif tempurung kenari, waktu kontak, kinetika, konsentrasi awal, dan  ph awal
OPTIMALISASI EKSTRAKSI STEROID UTAMA DARI BEBERAPA JENIS IKAN DENGAN SISTEM PELARUT TIGA KOMPONEN Mangallo, Bertha; Harlim, Tjodi; Taba, Paulina
MARINA CHIMICA ACTA Vol 5, No 1
Publisher : Universitas Hasanuddin

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The aim of this research is to determine an optimal time and an appropriate method of extracting the main  steroid  content as  well  as to determine the sterol level in some types of sea and fresh water fishes (Lutjhanus malabaricus,  Thunnus  albacore,  Tilapia mossambica  and Chanos chanos Forskau). A method used was an extraction method with a solvent system of three components (chloroform, methanol and water) in a ratio of 1: 2: 0.8. Samples were extracted with an extraction time of 5, 10, 15 and 20 minutes and with two extraction methods (cold extraction, room temperature and hot extraction at 40 oC). The extraction result was a biphase solution; the upper layer was a methanol-water extract and the bottom layer was a chloroform extract, which was a lipid fraction. The existence of sterol in the lipid extract was examined with the Liebermann-Burchard reagent. The chloroform extract was then saponificated with potassium hydroxide (10 %) in methanol and the sterol level in the isolate was determine with a UV-Vis spectrophotometer. Results showed that the maximum sterol level was obtained at the extraction time of 10 minutes and with the extraction method at a temperature of    40 oC. From the four kind of fishes investigated, it was clear that  the maximum  content of  sterol was  found in Lutjhanus malabaricus (0,31 %), whereas the  minimum  content was in Chanos chanos Forskau (0,18 %).   Keywords: extraction, sterol, and fish
Synthesis and Characterisation of Cd(II) Ion Imprinted Polymer (Cd-IIP) Taba, Paulina; Liong, Syarifuddin; Asmawati, .; Basir, Djabal Nur
MANASIR Vol 1, No 1 (2013): April 2013
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Universitas Hasanuddin

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Ion Imprinted Polymer (IIP) and Non Imprinted polymer (NIP) have been synthesized by using two steps. The first step was complexing Cd(NO3)2  with quinaldic acid with the mol ratio of 1:1. The second step was mixturing the complex with salicylic acid-formaldehyde (1:3) with 2M HCl as a catalyst. Polymerization was conducted using a microwave at a temperature of 140 oC for 15 minute. The result was washed by aquadest and dried in an oven at a temperature of 50 oC. Polymer was grinded to powder (60-100 mesh), washed with 0,05 M ethylene diamine tetra acetic acid (EDTA) solution and dried again to produce Cd(II) ion imprinted polymer (Cd-IIP). Polymer was analyzed by FTIR and SEM-EDS. FTIR spectra showed that there was a change in the wavelengths at 3400-3035 cm-1, 1700-1662 cm-1, and 800-500 cm-1 which are characteristic for vibrations of OH stretching, C=O bending and finger print region indicating the existence of metal bonding. SEM images showed that there were the difference in surface images of IIP, and Cd-IIP, whereas EDS measurement showed the difference in Cd composition between IIP and Cd-IIP.
ANALISIS POTENSI LIMBAH CAIR HASIL PENGOLAHAN RUMPUT LAUT SEBAGAI PUPUK BUATAN Yustin, Dina; R, Debi Angelia; Hala, Yusafir; Taba, Paulina
MARINA CHIMICA ACTA Vol 6, No 1
Publisher : Universitas Hasanuddin

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Analisis potensi limbah cair hasil pengolahan rumput laut sebagai pupuk buatan telah dilakukan. Studi kasus pada PT. Bantimurung Indah Kabupaten Maros, Sulsel ini membandingkan parameter kimia limbah cair dengan pupuk buatan yang beredar di pasaran Kota Makassar, meliputi pH, kadar kalium, klorida, nitrogen, dan fosfor. Hasil analisis menunjukkan bahwa kadar kalium dan klorida limbah lebih besar dari pupuk buatan, berturut-turut antara 0,87 - 2,88 % untuk kalium dan 1,37 - 2,41 % untuk klorida. Secara keseluruhan kadar nitrogen dan fosfor pada limbah cair lebih kecil dibandingkan dengan pupuk buatan, berturut-turut antara 0,02 - 0,03 % nitrogen, dan  0,003 - 0,207 % fosfor.  Nilai pH limbah dengan rentang 9,92 - 11,76 jauh lebih besar dibandingkan pupuk. Limbah cair potensial sebagai pupuk kalium tanpa pengolahan lebih lanjut, kecuali pada bak pembuangan akhir yang masih perlu diencerkan, namun berpotensi sangat kecil sebagai pupuk klorida, nitrogen dan fosfor, tetapi dapat diberikan karena relatif aman bagi tanaman.   Kata kunci : potensi, limbah, rumput laut, pupuk.
Dinamika Akumulasi Kadmium Pada Tanaman Kangkung Darat (Ipomoae reptans Poir) Liong, Syarifuddin; Noor, Alfian; Taba, Paulina; Zubair, Hazirin
Indonesia Chimica Acta Volume 2 No 1 - June 2009
Publisher : Indonesia Chimica Acta

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ne heavy metal, which is potential as pollutant, is cadmium that has been accumulated in soil and sediment. Although, cadmium is non essential element for plants, it is easily adsorbed and accumulated by various plants. The negative effect of cadmium on plants is that it can prevent the absorption of nutrition so that the plant growth will be inhibited and then the plant will die. Therefore, it is necessary to reduce the concentration of cadmium to be used as good growth media. Several methods of heavy metal accumulation, such as physical, chemical and biological methods, have been used, but the three methods have been considered as less effective methods. The use of plants to accumulate heavy metals in polluted soil is considered as a good method because the method is a safe method and can increase the soil fertility. In this research, accumulation of cadmium has been conducted by using Ipomeae reptans Poir. Result showed that the highest concentration that can be accumulated by I. reptans Poir was 3317.68 mg/kg of dried mass with the plantation time of 21 days. The increase of concentration in the growth media increased the cadmium concentration accumulated. The high accumulation of cadmium showed that I. reptans Poir is a hyperaccumulator plant for cadmium. The bioconcentration value was higher than 1, whereas the translocation factor was lower than 1 indicating that the accumulation mechanism was phytostabilization.Keywords : cadmium, accumulation, analysis, Ipomoae reptans Poir. 
Kinetic and Thermodynamics Studies the Adsorption of Phenol on Activated Carbon from Rice Husk Activated by ZnCl2 Anshar, Andi Muhammad; Taba, Paulina; Raya, Indah
Indonesian Journal of Science and Technology Vol 1, No 1 (2016): IJoST: Volume 1, Issue 1, 2016
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v1i1.2213

Abstract

The purpose of this study was to investigate the adsorption ability of activated carbon from rice husk in adsorbing phenol. Activated carbon used was in this studies burning risk husk at 300 and 400oC and then activated by 10% of ZnCl2. The from activated carbon was characterized using an Infrared Spectrometer, an X-ray diffraction, an Scanning Electron Microscope, and a gas sorption analyzer. The best activated carbon for adsorbing phenol was the activated carbon that prodused from the burning of rice husk at a temperature 400oC and activated with 10% of ZnCl2 for 24 hours. Adsorption capacity of the best activated carbon was 3.9370 mg/g adsorbent with Gibbs free energy of -25.493 kJ/mol.