This study evaluates the effectiveness of some commercial membranes (polytetrafluoroethylene [PTFE], polyvinylidene fluoride [PVDF], polyethersulfone [PES], and nitrocellulose [NC]) in concentrating a binary ethanol-water mixture under different conditions (volumes, temperatures, pressures, concentrations). Then, membrane was selected based on its performance for use ethanol by-product separation from OPEFB fermentation broth. The optimum result found PVDF with highest factor 3.03 flux 0.015...

Cooking oil is the essential food for bodies. should be enriched with vitamin A because this substance plays a critical role in maintaining health. contains antioxidant compounds, which inhibit or slow down oxidation reactions. This study aimed to determine amount of super olein and bulk before fortification content fortification. The was obtained using High-Performance Liquid Chromatography (HPLC) method <0.005 IU/gram, while test results were carried out by 2,2-Diphenyl-1-picrylhydrazyl...

Solanesol is mainly used as an intermediate compound to form Q10 co-enzyme and vitamin K2. Several extraction methods such Microwave-Assisted Extraction (MAE) have been developed extract solanesol. However, existing MAE require long times complex equipment with low yield. This study objective obtain the most efficient solanesol method. Different ratios of Hexane: Ethanol or Petroleum Ether: organic solvents were tested. Tobacco leaves collected from East Java oven-dried ground until 80 mesh....

Solanesol has high antioxidant activity and strong free radical absorption is an intermediate raw material for coenzyme Q10. Tobacco leaves are the highest source of solanesol. Ultrasonic-assisted extraction (UAE) increases extract yield through reduced process time, low temperature, safe solvents. The CAGR solanesol demands in Asia Pacific growing 10.5% 2021-2027, with market values USD 575 million. Therefore, developing a plant Indonesia required to increase high-added value derivative...

Solanesol is an aliphatic terpene alcohol composed of nine isoprene units with many bioactive benefits and commonly found in Solanaceae , including tobacco. difficult to synthesize artificially; Therefore, acquisition still relies on extraction. Extraction methods such as microwave-assisted extraction (MAE) ultrasound-assisted (UAE) have reduced time solvent consumption. Some variables that influence performance MAE are selection, time, microwave power, sample-to-solvent ratio (S/F). This...

Pests have plagued crops, leading to a decrease in yields. Farmer used pesticides, but it caused harmful effects. In Indonesia, pesticide application is still man-dependent. The survey was conducted with 21 respondents identify agricultural problems and the process of spraying pesticides. Uneven distribution (43%) ultimate respondent problem, cost-efficient effective for going through difficult paths (24.29%) most priority when buying drone. Affordability, effectivity, practicality,...

Biodegradable plastic production has been developed for a long time by researchers. Data from Ministry of Industry in 2017 stated Indonesia's reached 3.9 million tons/ year. In this study, the raw materials used came untapped waste, namely coffee skin, biodiesel-waste glycerol and shrimp-shells chitosan. research, biodegradable films have produced with addition skin waste chitosan concentration variations 0, 2, 4, 6, 8%. After optimum conditions were obtained comparing elongation tensile...

Solanesol (C45H74O) is an aliphatic terpene alcohol of nine isoprene units found in the tobacco plant (Nicotiana Tabacum L.). The long and complex biosynthetic pathway solanesol makes extraction method still best way to obtain solanesol. This work evaluates optimum conditions for sequential from leaves using microwave-ultrasound-assisted (MUAE) as a green method. There were two stages (sequential): first, microwave-assisted (MAE), followed by ultrasound-assisted (UAE). At MAE stage, dry...

Reaktor Serba Guna G.A Siwabessy (RSG-GAS) was built since 1983. RSG-GAS is a type of research reactor equipped with heat carrier and cooling system which serves to remove arising from fission reactions. In the medium, secondary using water originating PAM Puspiptek. Water used in systems can cause some major problems crust, corrosion, moss or microorganisms. this research, phosphorus (orthophosphate), zinc, conductivity pH have been measured determine whether not flow rate injection used....

Chitosan is valuable product that can be produced from crustacean shell wastes. important ingredient in various fields, for example food industry, biotechnology, pharmacy, medicine, and environment. The objective of this experiment was to obtain optimum conditions chitin deacetylation process propose mathematical model reaction used reactor design. This KOH solution at concentration 40 70% (weight fraction), temperature 80 120oC, time 4-6 hours. results showed condition achieved the 60%,...

In this study, silica extracted from sugarcane bagasse was converted into sulfated SiO 2 /SO 3 -H + by impregnating the with sulfuric acid to produce silica.The then subjected calcination at varied temperatures, and subsequently analyzed using Fourier Transform Infrared, Scanning Electron Microscope, X-Ray Diffraction.The catalytic activity of tested for transesterification coconut oil, reaction product Gas Chromatography-Mass Spectroscopy.The Infrared results indicate presence absorption...

Telah dilakukan sintesis biodiesel dari CPO parit yaitu fraksi minyak pada limbah cair pabrik CPO. Sintesis 2 tahap, esterifikasi untuk mengkonversi asam lemak bebas menjadi metil ester dan dilanjutkan dengan transesterifikasi trigliserida ester. Katalis yang digunakan berbasis Zeolit Alam Lampung (ZAL) dimodifikasi H SO 4 0,5 M (H-ZAL) sebagai katalis dalam tahap esterifikasi. berikutnya ZAL KOH (OH-ZAL) diuji aktivitas katalitiknya reaksi transesterifikasi. Konsentrasi divariasikan...

Solanesol (C45H74O) is an aliphatic terpene alcohol of nine isoprene units found in the tobacco plant (Nicotiana Tabacum L.). The long and complex biosynthetic pathway solanesol makes extraction method still best way to obtain solanesol. This work evaluates optimum conditions for sequential from leaves using microwave-ultrasound-assisted (MUAE) as a green method. There were two stages (sequential): first, microwave-assisted (MAE), followed by ultrasound-assisted (UAE). At MAE stage, dry...

Corrosion is one of the unavoidable problems in nuclear reactor cooling systems that use water as a medium. secondary systemThe Reaktor Serba Guna–G.A. Siwabessy (RSG-GAS) an open recirculation system uses carbon steel pipes for delivery. Due to obvious system, components interact with oxygen air, resulting corrosion. control RSG-GAS has been accomplished through continuous injection zinc phosphate (ZnPO4) inorganic inhibitors, but these inhibitors can contribute environmental pollution and...

Polypropylene/sugarcane bagasse silica (PP/SiO2) composites have been synthesized. The sol gel method with 1 M NaOH was used to synthesize from ash. results showed that the yield 52.8%. resulting blended polypropylene a mass ratio variation of 1:5, 1:10, 1:15, 1:20, and 1:25 obtain PP/SiO2 composites. Composites in variations 1:5 1:10 produce fragile plastic, whereas strong homogeneous plastic. water resistance test 1:20,and had good (> 94%), dropped 80-87%. FT-IR characterize...

Abstract Granular Activated carbon (AC) is commonly used for cleaning water contaminated with Benzene and toluene (BT). Regeneration needed to extend the lifetime of GAC. This study examines effect H2O2 concentration as an electron acceptor GAC bioregeneration by consortium Pseudomonas aeruginosa, fluorescens, Aeromonas hydrophila, Bacillus coagulants , substilis in a fixed-bed bioreactor. Enrichment was carried out adaptation benzene toluene. The enriched injected into bioreactor column...