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<![CDATA[Extraction of Nickel(II) and Zink(II) by Using A Solvent Impregnated Resin Containing 1-Nitrophenyl-3-methyl-4-octylbenzoyl-5pyrazolone ]]>
<![CDATA[Ibnu Khaldun]]>;
<![CDATA[. Rusman]]>;
<![CDATA[Muhammad Nasir]]>
<![CDATA[ Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering ]]>
Publisher : <![CDATA[Syiah Kuala University ]]>
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<![CDATA[The study on the equilibrium distribution of nickel(II) and zink(II) between aqueous solution and macromolecular resin impregnated with 1-nitrophenyl3-methyl-4-octylbenzoyl-5-pyrazolone (HNPMOBP, HL) have been conducted. In this research, the effects of pH values, and metal ion concentration on the yield were investigated. Analysis of the results shows that the extraction of the two metal ions can be explained assuming the formation of metal complexes in the resin phase with a general composition ML2. An extraction reaction is proposed and the equilibrium constants of the complexes were determined to be -6.15 and -3.45. The efficiency of the resin in the separation of nickel (II) and zink(II) is provided according to the separation factors. Under the experimental conditions employed, pH50 values for zink (II) and nickel(II) were respectively found to be at 2.76 and 4.95.]]>
<![CDATA[Photocatalytic oxidation in phenol removal using Ru/TiO2 and Ru/Al2O3 catalysts ]]>
<![CDATA[Syaifullah Muhammad]]>;
<![CDATA[Edy Saputra]]>;
<![CDATA[Shaobin Wang]]>
<![CDATA[ Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering ]]>
Publisher : <![CDATA[Syiah Kuala University ]]>
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<![CDATA[Ru/TiO2 and Ru/Al2O3 catalyst have been synthesized using impregnation method followed by calcinations at temperature of 550 0C. The synthesized catalysts were characterized by XRD, SEM and EDS. Based on characterization result, the active phase of Ru in form of RuO2 was well coated and dispersed on the support surface. The catalysts were then used in photocatalytic oxidation of phenol in the presence of peroxymonosulphte (PMS) as an oxidant and UV-light from Mercury lamp which is categorized as UV-C, with wave length in range of 200-280 nm. Both catalyst are effective for application of photocatalytic oxidation of phenol in the present PMS and UV. Further, activation of PMS for the production of sulphate radicals for phenol degradation in this study is generated by the interaction PMSCatalyst and PMS-UV. The photocatalytic catalyst of Ru/TiO2 and Ru/Al2O3 can increase the removal efficiency of 10-15%. The activity in phenol removal of Ru/TiO2-PMS-UV is slightly higher than Ru/Al2O3-PMS-UV. Both catalysts also showed good performance in the second and third runs after regeneration for multiple uses. Kinetic studies showed that phenol oxidation on the catalysts, Ru/TiO2 and Ru/Al2O3 in the present of PMS and UV follows the first order reaction.]]>
<![CDATA[β-Sitosterol From Bark Of Artocarpus Camansi And Its Antidiabetic Activity ]]>
<![CDATA[Rosnani Nasution]]>;
<![CDATA[. Marianne]]>;
<![CDATA[Muhammad Bahi]]>;
<![CDATA[Nurdin Saidi]]>;
<![CDATA[Isni Junina]]>
<![CDATA[ Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering ]]>
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<![CDATA[Research compound betasitosterol from the bark of plant of Artocarpus camansi (kulu) and test its antidiabetic has been done. The study begins by extracting samples (3.5 kg),w in the solvent of hexane, hexane extracts obtained,then separated by gravity column chromatography, and was characterized by GC-MS. The results obtained are groups of fractions A, and B. From phytochemical test results, the fraction of group B, has a steroid framework. Group fractions B after rechromatographed is obtained a pure isolates of B. Characterization by 1H-NMR and MS (from GC-MS), pure isolate of B is β-sitosterol. Antidiabetic activity test results showed that the extract of n-hexane, fraction group A and fraction group of B (containing βsitosterol), can lower blood sugar levels male Swiss Webster mice were performed by the method of glucose tolerance. Dose of extract of n-hexane is 50 mg/dL at minute 30th, 60th and 90th can lower glucose as much as 103 mg/dL; 71 mg/dL; and 49.33 mg/dL. Group of fraction A of a dose 50 mg/dL at 60th minutes and 90th can lower blood glucose of mice are: 116 mg/dL; and 58 mg/dL. Group B fraction (containing β-sitosterol) at a dose of 50 mg/dL at minute 30th, 60th and 90th can lower glucose by 73 mg/dL; 87 mg/dL; and 73.33 mg/dL. Group fraction of B is the highest in lowering blood glucose average compared with n-hexane extract and group A. Analysis of variance of this fraction were performed by using ANOVA Post hoc analysis procedures one-way of, significant differences (p0.05) and (p 0.01) conducted using Tukey.]]>
<![CDATA[Biodegradable Plastic from Cassava Waste using Sorbitol as Plasticizer ]]>
<![CDATA[Wahyu Rinaldi]]>;
<![CDATA[Mirna Rahman Lubis]]>;
<![CDATA[Umi Fathanah]]>
<![CDATA[ Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering ]]>
Publisher : <![CDATA[Syiah Kuala University ]]>
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<![CDATA[Cassava waste can be utilized as raw material for biodegradable plastics. This research studied the influence of sorbitol, carboxymethyl cellulose (CMC) and the gelatinization temperature in the preparation of biodegradable plastic from cassava waste. 12 gram of starch from cassava waste was stired with 68.2 gram of water-ethanol solution at 75 rpm and is fixed during this study. While the amount of sorbitol, CMC and gelatinization temperature are varied. The best results are showed at 44.90% in water absorption, 101.4 MPa in tensile strength, 76.57% in elongation, 4.17 MPa in Young's modulus, and decomposition time are 64, 67, and 79 days.]]>
<![CDATA[Uptake of Mercury Ion in a Wetland Plant, Canna Sp. ]]>
<![CDATA[. Suhendrayatna]]>;
<![CDATA[Henny Marlina]]>;
<![CDATA[Muhammad Zaki]]>;
<![CDATA[. Elvitriana]]>
<![CDATA[ Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering ]]>
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<![CDATA[Canna Sp. is one of the plants that can live in conditions of wetland cultivated in freshwater courses, which often serve as recipients for domestic and other sorts of wastewater. In the context of its life ability, this study deals to investigate the capacity of Canna Sp. in uptake toxic heavy metal mercury from a wetland system. Canna Sp. was cultivated in a polybag contained wastewater for a couple months to reach acclimatization. The wastewater contained mercury ions in different concentrations of 1.2; 0.96 and 0.36 mg-Hg/L. Each polybags contained five stems of Canna Sp. Control media (contain no mercury in media) were also prepared for these treatments. During 14 days of the experiment, the atmospheric air and water temperature (30+3 oC is optimum) were maintained and every five days, length of stems, concentration of mercury ion in water phase, and its tissue were analyzed. The concentration of mercury in shoots, leaves, and roots were analyzed by Atomic Absorption Spectrophotometer, Shimadzu AA 6300 after destructed using TCLP method. Results showed that Canna Sp. has resistant a survival on water phase containing mercury and it inhibits the growth of Canna Sp. in the log phase. The highest mercury ion uptake by Canna Sp. occurred in the root (1.16 – 1.34 mg-Hg/kg) compared to the leaves (0.05 – 0.33 mg-Hg/kg) and the shoots (0.29-0.69 mg-Hg/kg). These results reached to the conclusion that Canna Sp. has a potential for mercury phytoremediation application in a wetland system.]]>
<![CDATA[Adsorption of Heavy Metal Cr (VI) Using BioSorbent of Tea Dregs: Experimental and Modeling ]]>
<![CDATA[. Mariana]]>;
<![CDATA[. Mahidin]]>;
<![CDATA[Farid Mulana]]>
<![CDATA[ Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering ]]>
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<![CDATA[Tea plants have been generally known by most of Indonesian as a refreshing drink. Tea leavesusually contain caffeine of 1-4%, tannins of 7-20% and a little essential oil. Powder of tea dregs has the ability to absorb heavy metal of chromium. The research objective was to study the adsorption kinetics of heavy metal ions of Cr (VI) using powder of tea dregs and to study factors that affect adsorption process of chromium metal. The analysis of sample solution concentration of Cr (VI) in this study was using Atomic Absorption Spectrophotometer (AAS). The effect of various process variables such as initial concentration of the metal solution, stirrer speed and concentration of modifying agent of sulphuric acid has been investigated. The results showed that the optimum adsorption process was obtained at adsorbate concentration of 125 ppm with activation process at sulphuric acid concentration of 0.8 M. The highest efficiency of heavy metal adsorption reached 83.24% with adsorption capacity of 5.202925 mg/g bio-sorbent. This adsorption was in accordance with the Langmuir Isotherm models with R2 value of 0.909. This study was also in accordance with kinetics of a second pseudo order with a R2 value of 0.997 and K of 0.752 g/mg. Minute]]>
<![CDATA[Glycerolysis for Lowering Free FattyAcid of Waste Cooking Oil ]]>
<![CDATA[M. Dani Supardan]]>;
<![CDATA[. Adisalamun]]>;
<![CDATA[Yanti Meldasari]]>;
<![CDATA[Yulia Annisa]]>;
<![CDATA[. Mahlinda]]>
<![CDATA[ Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering ]]>
Publisher : <![CDATA[Syiah Kuala University ]]>
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<![CDATA[Glycerolysis can be a useful alternative for lowering free fatty acid content present in the sustainable feedstock of waste cooking oil. In the present work, the effect of reaction parameters such as molar ratio of oil to glycerol (1:1, 1:2 and 1:3), catalyst NaOH concentration (0.875, 1.3 and 1.75 %-w of oil) and mass ratio of oil to co-solvent hexane (2:1, 4:1, 8:1) have been investigated. The reaction parameters have a remarkable effect on the free fatty acid (in term of acid value) of waste cooking oil. The final acid value decreased with an increased in molar ratio of oil to glycerol from 1:1 to 1:2. A significant reduction in acid value was not observed with a further increase in molar ratio of oil to glycerol. It has been observed that the optimum catalyst concentration of 1.3% can be reduced acid value from 12.2 to 1 mg KOH/g oil in 20 min. The addition of hexane as co-solvent affected the reaction rate due to immiscibility of the oil and glycerol phases. However, a suitable amount of co-solvent must be added to achieve an optimum of acid value reduction.]]>
<![CDATA[Electrocoagulation Application in The Processing of Palm Oil Mill Effluent from Anaerobic Fixed Bed Reactor ]]>
<![CDATA[Farida Hanum]]>;
<![CDATA[Rondang Tambun]]>;
<![CDATA[M. Yusuf Ritonga]]>
<![CDATA[ Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering ]]>
Publisher : <![CDATA[Syiah Kuala University ]]>
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<![CDATA[The production of Crude Palm Oil (CPO) in Indonesia keep increase following the amount of wastewater that being produced. Therefore laboratory scale research of processing of palm oil mill effluent of anaerobic fixed bed reactor with electrocoagulation technique was conducted. Electrocoagulation is a process of coagulation using a direct current through an electrochemical events are symptoms of electrolyte decomposition. This research aims to determine the influence of voltage in the adaptor to the performance of this electrocoagulation system and to determine the optimum operating time for the liquid waste treatment. The material that being used is palm oil mill effluent with electrocoagulation equipment devices with the discharge of 1.5 liters/minute, the residence time of wastewater at 1 hour, 5 cm electrode spacing, as well as the strong current of 8, 9, 10, and 11 Ampere. The results obtained by the reduction in COD (Chemical Oxygen Demand) at the highest voltage of 9 volts at 120 minutes of operating time 95,76%, the reduction of TS (Total Solid) obtained at the highest voltage of 10 volts at 90 minutes of operating time 24,41%, the reduction of TSS (Total Suspended Solid) the highest obtained at the operating time of 180 minutes and a voltage of 10 volts give the rejection 91,78 %.]]>
<![CDATA[Alkaline Pretreatment Effect on Sweet Sorghum Bagasse for Bioethanol Production ]]>
<![CDATA[Yanni Sudiyani Sudiyani]]>;
<![CDATA[Eka Triwahyuni]]>;
<![CDATA[. Muryanto]]>;
<![CDATA[Dian Burhani]]>;
<![CDATA[Joko Waluyo]]>;
<![CDATA[Anny Sulaswaty]]>;
<![CDATA[Haznan Abimanyu Abimanyu]]>
<![CDATA[ Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering ]]>
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<![CDATA[Lignocellulosic material, which consist mainly of cellulose, hemicelluloses and lignin, are among the most promising renewable feedstock for the production of energy and chemicals. The bagasse residue of sweet sorghum can be use utilized as raw material to alternative energy such as bioethanol. Bioethanol production consist of pretreatment, saccharification, fermentation and purification process. The pretreatment process is of great importance to ethanol yield. In the present study, alkaline pretreatment was conducted using a steam explosion reactor at 1300C with concentrations of NaOH 6, and 10% (kg/L) for 10, and 30 min. For ethanol production separate hydrolysis and fermentation (SHF) and simultaneous saccharification and fermentation (SSF) process were conducted with 30 FPU of Ctec2 and Htec2 enzyme and yeast of Saccharomyces cerevisiae. The results shows that maximum cellulose conversion to total glucose plus xylose were found to be greatest with NaOH 10% for 30 min. Maximum ethanol yield 92.19% and high concentration of ethanol 66.88g/L were obtained at SSF condition after 24 h.]]>
<![CDATA[The Importance of Chemistry for Nanotechnology ]]>
<![CDATA[Evamarie Hey-Hawkins]]>
<![CDATA[ Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering ]]>
Publisher : <![CDATA[Syiah Kuala University ]]>
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<![CDATA[The paradigm shift from uniform bulk materials towards nanostructured multifunctional materials is essential for future knowledge transfer from fundamental to applied sciences. In nanotechnology, two approaches are employed: “top-down” and “bottom-up”. In the top-down approach, larger assemblies are broken down to smaller units, while the bottom-up approach makes use of atomic or molecular building blocks to construct the desired nanostructures. Chemistry plays a major role in the bottom-up approach by providing progressive building blocks, such as “smart” molecules, that can be combined — preferentially by self-organisation — to create fundamentally new classes of materials. The ultimate goal is to create environmentally friendly, highly efficient, low-cost devices serving multifunctional purposes for a steadily more diversified modern society]]>
