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Ani Idris - One of the best experts on this subject based on the ideXlab platform.
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Enzymatic Hydrolysis of Used-Frying Oil Using Candida rugosa Lipase
Jurnal Teknologi, 2014Co-Authors: Roslina Rashid, Nor Athirah Zaharudin, Ani IdrisAbstract:Hydrolysis of used-Frying Oil had been carried out by using an immobilized lipase from Candida rugosa in solvent-free system. Used-Frying Oil was considered as the substrate in this study due to abundance amount of used-Frying Oil present in Malaysia as its disposal problem has become a very serious environmental issue. The high free fatty acids (FFA) content in used-Frying Oil has raised the interest for the utilization of this waste into valuable products. Even though used-Frying Oil is not suitable for human consumption and being extensively used for the biodiesel production, FFA from used-Frying Oil could be utilized to produce various types of non-edible products. Effects of enzyme loading, water content, reaction temperature, buffer pH and agitation speeds on the hydrolysis process were investigated. The experiments were conducted at constant reaction time of 3 hours. It was found that the effect of variables were very significant on the hydrolysis process. The hydrolysis process achieved the highest yield of fatty acids at enzyme concentration of 1.5% (w/v), buffer volume to Oil volume ratio of 3:1, temperature of 40˚C, pH of 7, and agitation speed of 220 rpm. Under these described conditions, it was found that nearly 97.15±1.31% of hydrolysis degree was achieved with 2533.33±26.67 µmol/ml of fatty acids was produced.
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Enzymatic Hydrolysis of Used-Frying Oil Using Candida Rugosa Lipase in Solvent-Free System
Jurnal Teknologi, 2014Co-Authors: Roslina Rashid, Nor Athirah Zaharudin, Ani IdrisAbstract:The effects of enzymatic hydrolysis of used-Frying Oil were carried out using an immobilized lipase from Candida rugosa in solvent-free system. Used-Frying Oil was used as a substrate in this study due to abundance amount of used-Frying Oil present in Malaysia as its disposal problem become a very serious environmental issue. The high free fatty acids (FFA) content in used-Frying Oil has raised the interest for the utilization of this waste into valuable products. Even though used-Frying Oil is not suitable for human consumption and being extensively used for biodiesel production, FFA from used-Frying Oil could be utilized to produce various types of non-edible products. Effects of enzyme loading, water content, reaction temperature, buffer pH and agitation speed on the degree of hydrolysis were investigated. The experiments were conducted at constant 3 hours reaction time. It was found that the effect of variables were very significant by influencing the hydrolysis process. The hydrolysis process achieved the highest yield of fatty acids at enzyme concentration of 1.5% (w/v), buffer volume to Oil volume ratio of 3:1, temperature of 40 ˚C, pH of 7 and agitation speed of 220 rpm. Under these described conditions, nearly 98.1% degree of hydrolysis was achieved. A kinetic model based on Michaelis-Menten equation was used to determine the rate constant of V max and K m and it was found that the values are20.8333µmol/ml.min and0.0833g/ml respectively which were gained from Lineweaver-Burk plot.
M Pugazhvadivu - One of the best experts on this subject based on the ideXlab platform.
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Estimation of Higher Heating Value of Waste Frying Oil from its Chemical Properties
Applied Mechanics and Materials, 2014Co-Authors: Pavalavana Pandian Jayaraman, Sendhil Kumar Natarajan, M PugazhvadivuAbstract:Vegetable Oils are considered as substitute for energy production. In this paper, a correlation was developed based on iodine and saponification values of the waste Frying Oil to estimate its higher heating value. Five samples of waste Frying Oil were collected, its iodine value and saponification value were measured and the heating values were measured. A correlation by linear regression method was developed and compared with the heating value obtained experimentally. A Comparison was made with other correlations available in the literature. The comparison of higher heating value obtained from new correlation and experiments gave a R2 value of 0.97, error of standard deviation is 0.06 and an average error of 1.86%.
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investigations on the performance and exhaust emissions of a diesel engine using preheated waste Frying Oil as fuel
Renewable Energy, 2005Co-Authors: M Pugazhvadivu, K JeyachandranAbstract:In the present experimental investigation, waste Frying Oil a non-edible vegetable Oil was used as an alternative fuel for diesel engine. The high viscosity of the waste Frying Oil was reduced by preheating. The properties of waste Frying Oil such as viscosity, density, calorific value and flash point were determined. The effect of temperature on the viscosity of waste Frying Oil was evaluated. It was determined that the waste Frying Oil requires a heating temperature of 135°C to bring down its viscosity to that of diesel at 30°C. The performance and exhaust emissions of a single cylinder diesel engine was evaluated using diesel, waste Frying Oil (without preheating) and waste Frying Oil preheated to two different inlet temperatures (75 and 135°C). The engine performance was improved and the CO and smoke emissions were reduced using preheated waste Frying Oil. It was concluded from the results of the experimental investigation that the waste Frying Oil preheated to 135°C could be used as a diesel fuel substitute for short-term engine operation.
Daniel Thomazini - One of the best experts on this subject based on the ideXlab platform.
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Investigation to Obtain Polyols from Residual Frying Oil
Materials Science Forum, 2014Co-Authors: Luiz Gustavo Ferraro, Felipe Bastos De Souza Alvarenga, Maria Virginia Gelfuso, Daniel ThomaziniAbstract:. Polymeric materials based on petroleum have generated a major problem for the environment because they are produced by non-renewable sources. Many studies are being conducted to propose alternatives to obtain polymers from renewable raw materials sources. The disadvantage of this alternative is the use of food sources for polymer production but this is avoided when using the residual Frying Oil. Aiming to obtain polymer-based urethanes, pretreated residual Frying Oil samples were submitted to various conditions of hydroxylation and analyzed by FT-IR, where it was possible to observe the presence of-OH groups. To optimize the process of hydroxylation a new research was conducted to determine the concentrations of formic acid and hydrogen peroxide that can generate polyols with high levels of hydroxylation index, suitable for the formation of urethanes.
Asim Kumar Jana - One of the best experts on this subject based on the ideXlab platform.
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Utilization of waste Frying Oil for rhamnolipid production by indigenous Pseudomonas aeruginosa: Improvement through co-substrate optimization
Journal of Environmental Chemical Engineering, 2020Co-Authors: Arun Singh Pathania, Asim Kumar JanaAbstract:Abstract Conversion of fatty acids content of waste Frying Oils into value added product is better option to manage this waste. Use of waste Frying Oil for production of rhamnolipid by an indigenous P. aeruginosa and improvement of yield through optimization co-substrate (glucose) studied. Microbe isolated from Frying Oil condensate deposited on exhaust vent and further screened to utilize glucose with Frying Oil used in study. RSM (CCD) was used to optimize responses of rhamnolipid production, cell growth and specific production rate that influenced by independent variables Frying Oil (0−20 g/L), glucose (0−20 g/L) and ammonium nitrate (0–2.5 g/L). Co-substrate utilization showed effects on cell growth, quorum sensing and changed biosynthetic pathway to improve rhamnolipid production. RSM optimized the glucose (9.7 g/L) with Frying Oil for the highest effect of the co-substrate with rhamnolipid yield 6.3 g/L (5.0 times), QPmax 0.4 h−1 (9.5 times) and higher substrate diversion towards product (3.0 times) than towards the cell growth. Biosurfactant showed surface tension reduction to 30 mN/m at CMC 150 mg/L, emulsification indexes E24 84 % and 62 % with vegetable (soybean) Oil and kerosene respectively. Cost effective production of rhamnolipid is possible using waste Frying Oil substrate with optimization of sugar containing wastes (molasses, canneries waste etc.) in media.
Sulhadi - One of the best experts on this subject based on the ideXlab platform.
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Removal of Heavy Metal Nickel-Ions from Wastewaters Using Carbon Nanodots from Frying Oil☆
Procedia Engineering, 2017Co-Authors: Mahardika Prasetya Aji, Pradita Ajeng Wiguna, Jotti Karunawan, Annisa Lidia Wati, SulhadiAbstract:Heavy metals pollution becomes a serious environmental problem because heavy metals are nonbiodegradable and some heavy metal ion such as nickel isknown as toxic metal. In this study, we investigated the natural sorbent materials for removing heavy metals nickel-ions in the wastewaters using carbon nanodots (C-Dots) from Frying Oil. C-Dots was resulted from Frying Oil by the hydrothermal method at temperature 300oC for 2 h. The results showed that C-Dots could remove heavy metal nickel-ions in the solution. Electric current from the solution of heavy metal nickel-ion decreases with the number of C-Dots and time that used in the process of removal. The intensity of adsorption spectra from nickel ions contained in the wavelength 600-800 nm. C-Dots from Frying Oil have a great potential asa natural sorbent.
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Carbon Nanodots from Frying Oil as Catalyst for Photocatalytic Degradation of Methylene Blue Assisted Solar Light Irradiation
American Journal of Applied Sciences, 2016Co-Authors: Mahardika Prasetya Aji, Pradita Ajeng Wiguna, Susanto, Nita Rosita, Siti Aisyah Suciningtyas, SulhadiAbstract:Carbon nanodots (C-Dots) of Frying Oil could be a photocatalyst for the degradation of methylene blue solution with assisted solar light irradiation. C-Dots of Frying Oil were resulted from the heating process at T = 300?C for 2 h. C-Dots of Frying Oil were used as a catalyst in methylene blue solution with variations the number of C-Dots and the time of solar light irradiation. The results of photocatalytic process show the degradation of concentration from methylene blue solution. It was observed from the color change of the solution and the absorbance intensity decreases with increasing time of photocatalytic process. FTIR spectra showed that the hydroxyl functional group -OH changes and more widened at wavenumber 3468 cm-1 because the result of photocatytic process of methylene blue solution is water (H2O) and carbon dioxide (CO2). Meanwhile, the intensity of the alkene functional group C = N at wavenumber 1650 cm-1 decreased during the photocatalytic process. These results indicate that C-Dots of Frying Oil have an excellent potential to be developed as a photocatalyst materials.
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Performance of photocatalyst based carbon nanodots from waste Frying Oil in water purification
2016Co-Authors: Mahardika Prasetya Aji, Pradita Ajeng Wiguna, Susanto, Nita Rosita, Siti Aisyah Suciningtyas, SulhadiAbstract:Carbon Nanodots (C-Dots) from waste Frying Oil could be used as a photocatalyst in water purification with solar light irradiation. Performance of C-Dots as a photocatalyst was tested in the process of water purification with a given synthetic sewage methylene blue. The tested was also conducted by comparing the performance C-Dots made from Frying Oil, waste fryng Oil as a photocatalyst and solution of methylene blue without photocatalyst C-Dots. Performance of C-Dots from waste Frying Oil were estimated by the results of absorbance spectrum. The results of measurement absorbance spectrum from the process of water purification with photocatalyst C-Dots showed that the highest intensity at a wavelength 664 nm of methylene blue decreased. The test results showed that the performance of photocatalyst C-Dots from waste Frying Oil was better in water purification. This estimated that number of particles C-dots is more in waste Frying Oil because have experieced repeated the heating process so that the higher p...
