scholarly journals CORN OIL REMOVAL BY ADVANCED OXIDATION PROCESSES IN COMPARTION WITH CASTOR AND COCONUT OILS

2021 ◽  
Vol 25 (Special) ◽  
pp. 3-123-3-129
Author(s):  
Nada S. Joodi ◽  
◽  
Nagam O. Kariem ◽  
Keyword(s):  
Vegetable Oils ◽  
Castor Oil ◽  
Corn Oil ◽  
Coconut Oil ◽  
Advanced Oxidation ◽  
Fenton Process ◽  
Medium Ph ◽  
Mixing Speed ◽  
Oil Concentration ◽  
Removal Efficiencies

The AOPs advanced oxidation process has been studied in three ways: (UV/H₂O₂), Fenton, and Photo-Fenton in artificial water treating from vegetable oils. The corn, castor, and coconut oils emulsion were prepared and treated by AOPs. Several variables were studied: time, pH, mixing speed, temperature, the dose of chemicals (H₂O₂ & Fe2SO4.7H2O), and finally the oil concentration. The best conditions were obtained in several experiments where the Fenton and Photo-Fenton process operates in an acidic medium (pH = 3.5), while the UV/H₂O₂ process operates with the neutral medium (pH = 7). The optimum temperature for the Photo-Fenton and UV/H₂O₂ processes is 40°C, and for the Fenton process is 20°C. While there was an effect of mixing speed, higher efficiency was achieved at (1000 rpm) for the Photo-Fenton process and (500 rpm) for the Fenton and UV/H₂O₂ processes. Also, the H₂O₂ concentration was at (500 mg/L) for all processes, when the Fe2SO4.7H2O concentration for the photo-Fenton process = (50 mg/L), and for the Fenton process = (250 mg/L). Oil concentration = (1750 mg/L). Optimum conditions were applied to treat vegetable oils, the Fenton process gave a maximum removal efficiency of 95.2% for corn oil (COD 12800 to 610 mg/L), 94.5% for castor oil, while 57.5% for coconut oil after the total reaction time (180 minutes). The Photo-Fenton process gave removal efficiencies: 93% for corn oil (COD 12500 to 870 mg/L), 83.8% for castor oil, and 61.6% for coconut oil. The UV/H₂O₂ process gave removal efficiencies: 69.8% for corn oil, 32% for castor oil, and 23.4% for coconut oil after the total irradiation time. As real wastewater, the treatment was acceptable and achieved an efficiency of 44.7%, 89.2%, and 83.8% for the UV/H₂O₂, Fenton, and Photo-Fenton processes, respectively.

scholarly journals COD Removal of Edible Oil Content in Wastewater by Advanced Oxidation Process

2016 ◽  
Vol 6 (2) ◽  
pp. 57 ◽  
Author(s):  
Aola Hussein Flamarz Tahir ◽  
Nagam Obeid Kariem ◽  
Shatha Abduljabbar Ibrahim
Keyword(s):  
Advanced Oxidation Process ◽  
Ph Value ◽  
Advanced Oxidation ◽  
Fenton Process ◽  
Cod Reduction ◽  
Chemical Reagents ◽  
Batch System ◽  
Oil Concentration ◽  
Optimum Chemical ◽  
Total Reaction Time

Different Advanced Oxidation Processes (Photo Fenton process, Fenton process and H<sub>2</sub>O<sub>2</sub>/UV) were studied in order to reduce COD from oily compounds aqueous solution using batch system. To get the optimum condition, different variables were studied for each of these processes; such as pH, time, concentration of H<sub>2</sub>O<sub>2</sub>, concentration of oil, concentration of FeSO<sub>4</sub>·7H<sub>2</sub>O and temperature as parameters. It was found that the optimal pH value for the three processes was 3 and the optimal temperature was 30<sup>o</sup>C for Photo-Fenton and UV/H<sub>2</sub>O<sub>2</sub> system and 20<sup>o</sup>C for Fenton process. Photo-Fenton process gave a maximum COD reduction of 80.59 % (COD from 2684 to 521 mg/l), Fenton gave 53.22 % (COD from 2587-1130) and the combination of UV/H<sub>2</sub>O<sub>2</sub> gave a COD reduction of 22.69 % (COD from 2450 to 1894). The percentage of removal found was after the total reaction time (180 min.). The optimum chemical reagents for Photo-Fenton, Fenton and UV/H<sub>2</sub>O<sub>2</sub> were as the following H<sub>2</sub>O<sub>2</sub> = 800 mg/l, 1500 mg/l and 2000 mg/l, Fe<sub>2</sub>SO<sub>4</sub>·7H<sub>2</sub>O = 60 mg/l, 100 mg/l.

scholarly journals Effect of Different Vegetable Oils (Red Palm Olein, Palm Olein, Corn Oil and Coconut Oil) on Lipid Profile in Rat

2011 ◽  
Vol 02 (04) ◽  
pp. 253-258 ◽  
Author(s):  
Eqbal Dauqan ◽  
Halimah Abdullah Sani ◽  
Aminah Abdullah ◽  
Zalifah Mohd Kasim
Keyword(s):  
Lipid Profile ◽  
Vegetable Oils ◽  
Palm Olein ◽  
Corn Oil ◽  
Coconut Oil ◽  
Red Palm Olein

scholarly journals Mixing Oil-Based Microencapsulation of Garlic Essential Oil: Impact of Incorporating Three Commercial Vegetable Oils on the Stability of Emulsions

Foods ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1637
Author(s):  
Yunjiao Zhao ◽  
Rui Liu ◽  
Cuiping Qi ◽  
Wen Li ◽  
Mohamed Rifky ◽  
...  
Keyword(s):  
Essential Oil ◽  
Vegetable Oils ◽  
Encapsulation Efficiency ◽  
Ostwald Ripening ◽  
Corn Oil ◽  
Whey Protein Concentrate ◽  
Diallyl Disulfide ◽  
Active Components ◽  
The Stability ◽  
Garlic Essential Oil

The active components in garlic essential oil are easily degradable, which limits its application in the food industry. Vegetable oils (VOs) were used to improve the stability of garlic essential oil (GEO) emulsion. The volatile compounds of GEO and its mixtures with vegetable oils (VOs), including corn oil (CO), soybean oil (SO), and olive oil (OO) indicated that GEO-VO mixtures had a higher percentage of Diallyl disulfide and Diallyl trisulfide than pure GEO. Adding an appropriate amount of VOs promoted the GEO emulsion (whey protein concentrate and inulin as the wall materials) stability in order of CO > SO > OO. Evaluation of the encapsulation efficiency, controlled release, and antimicrobial activity of GEO-VO microcapsules showed that the GEO was successfully entrapped and slowly released with active antibacterial activities on both E. coli and S. aureus. Collectively, these results implied that VOs, especially for 20% CO, improved the stability of GEO emulsions and the encapsulation efficiency of GEO microcapsules. The mechanism might be related to (1) the regulating effect of density difference between oil and water phases on prevention to gravitational separation, (2) the promotion to the compatibility of GEO and VOs to inhibit the phase separation caused by Ostwald ripening.

Effect of saturated fat diets on rat liver NADP-linked enzymes

1965 ◽  
Vol 209 (4) ◽  
pp. 773-780 ◽  
Author(s):  
Helen M. Tepperman ◽  
Jay Tepperman
Keyword(s):  
Fatty Acids ◽  
Enzyme Activity ◽  
Rat Liver ◽  
Corn Oil ◽  
Saturated Fat ◽  
Coconut Oil ◽  
Liver Slices ◽  
Fat Diets ◽  
Effect Of Feeding

The aggregate hexosemonophosphate dehydrogenase (HMPD) activity was found to be higher in livers of rats fed a diet containing saturated fat (hydrogenated coconut oil = H) for 7 days and fasted for 48 hr than it was in similarly prepared animals fed a corn oil (CO) diet. Later, a liver HMPD-increasing effect of feeding H was found in nonfasted animals. Lipogenesis (i.e., the incorporation of acetate-1-C14 into fatty acids by liver slices) was shown to be as low or lower in the H group as in the CO. Liver slices prepared from H and CO diet adapted rats were incubated with either acetate-1-C14 or palmitate-1-C14 and the extent of incorporation of C14 into individual fatty acids was measured. With both substrates more radioactivity was found in 16:1, 18:0, and 18:1 in the case of H-fed animals. It is proposed that a component of the signal for eliciting increased NADP-linked enzyme activity in the H rats was an increased rate of oxidation of NADPH attendant on monoene formation and chain lengthening.

scholarly journals Taurine Prevents Hypercholesterolemia in Ovariectomized Rats Fed Corn Oil but Not in Those Fed Coconut Oil

2003 ◽  
Vol 133 (8) ◽  
pp. 2616-2621 ◽  
Author(s):  
Taro Kishida ◽  
Shouko Miyazato ◽  
Hiroshi Ogawa ◽  
Kiyoshi Ebihara
Keyword(s):  
Corn Oil ◽  
Coconut Oil ◽  
Ovariectomized Rats

scholarly journals The Performance of Diesel Engine Fueled Diesel Oil in Comparison with Heated Pure Vegetable Oils Available in Vietnam

2017 ◽  
Vol 10 (2) ◽  
pp. 93 ◽  
Author(s):  
Anh Tuan Hoang
Keyword(s):  
Diesel Engine ◽  
Vegetable Oils ◽  
Sunflower Oil ◽  
Alternative Fuels ◽  
Internal Combustion Engines ◽  
Fossil Fuels ◽  
Coconut Oil ◽  
Diesel Oil ◽  
Petroleum Resources ◽  
Ready Availability

Pure vegetable oils have the greatest promise for alternative fuels for internal combustion engines beside the depletion of conventional petroleum resources. Among various possible options, pure vegetable oils present promising of greener air substitutes for fossil fuels. Pure vegetable oils, due to the agricultural origin, liquidity, ready availability, renewability, biodegradability are able to reduce the CO2 emissions in the atmosphere. Also, in Vietnam, pure vegetable oils such as soybean oil (SoO100), coconut oil (CO100) and sunflower oil (SuO100) are available. The paper presents the results of using heated pure vegetable oils for diesel engine D243 with power of 80 hp (58.88) kW. The results of determining the power (Ne), specific fuel consumption (SFC) and efficiency (n) are used to evaluate the performance of engine. The results show that, the engine power (Ne) is 10%-15% lower, the SFC of engine D243 using pure vegetable oils is 3%-5% higher and the η is 2.5%-6.2% lower compared to diesel oil (DO). Among the pure vegetable oils, the best performance results for D243 diesel engine are obtained from heated pure sunflower oil up to 135oC.

scholarly journals Production of biodiesel from babassu oil using methanol-ethanol blends

2018 ◽  
Vol 35 (1) ◽  
pp. 47
Author(s):  
Fernando Carvalho Silva ◽  
Kiany Sirley Brandão Cavalcante ◽  
Hilton Costa Louzeiro ◽  
Katia Regina Marques Moura ◽  
Adeilton Pereira Maciel ◽  
...  
Keyword(s):  
Specific Gravity ◽  
Vegetable Oils ◽  
Castor Oil ◽  
Kinematic Viscosity ◽  
Volume Ratio ◽  
Biodiesel Production ◽  
Mass Yield ◽  
A Value ◽  
Oil Plant ◽  
Ethanol Blends

Maranhão state in Brazil presents a big potential for the cultivation of several oleaginous species, such as babassu, soybean, castor oil plant, etc... These vegetable oils can be transformed into biodiesel by the transesterification reaction in an alkaline medium, using methanol or ethanol. The biodiesel production from a blend of these alcohols is a way of adding the technical and economical advantages of methanol to the environmental advantages of ethanol. The optimized alcohol blend was observed to be a methanol/ethanol volume ratio of 80 % MeOH: 20 % EtOH. The ester content was of 98.70 %, a value higher than the target of the ANP, 96.5 % (m/m), and the biodiesel mass yield was of 95.32 %. This biodiesel fulfills the specifications of moisture, specific gravity, kinematic viscosity and percentages of free alcohols (methanol plus ethanol) and free glycerin.

Development of Nanoemulsions Containing Coconut Oil with Mixed Emulsifiers: Effect of Mixing Speed on Physical Properties

2019 ◽  
Vol 819 ◽  
pp. 181-186
Author(s):  
Sirikarn Pengon ◽  
Wongsakorn Suchaoin ◽  
Chutima Limmatvapirat ◽  
Sontaya Limmatvapirat
Keyword(s):  
Zeta Potential ◽  
Physical Properties ◽  
Coconut Oil ◽  
Topical Administration ◽  
Antimicrobial Activities ◽  
Natural Material ◽  
Mixing Speed ◽  
Long Term Stability ◽  
Gram Positive Bacteria ◽  
Problem Formulations

Recently, coconut oil has become an attractive natural material consisting of monolaurin which exhibits antibacterial, antifungal, antiviral, and antiprotozoal effects. However, coconut oil is relatively immiscible with water, the main composition of human body. This study was thus focused on the development of nanoemulsions containing coconut oil employing the combination of several surfactants and variation of mixing speed for the purpose of overcoming the immiscible problem. Formulations of nanoemulsions were prepared within this study. The HLB values were then measured and used to determine the compatibility between coconut oil and surfactants. Moreover, the speed of homogenizer which might have a significant impact on the physical properties of nanoemulsions, was taken into account. Meanwhile, particle size, zeta potential, pH, long-term stability, and antibacterial activity were also examined. According to the results, the nanoemulsions prepared from 10% (w/w) of coconut oil and 10% (w/w) of surfactants comprising of Tween® 80 and Span® 80 in the ratio of 2 to 3 at the homogenization speed of 15000 rpm seemed to be suitable for topical administration with the characteristics as follows: the droplet size of 254.7±0.016 nm, the zeta potential of-4.41±1.46 mV, and the pH values of 6.13± 0.01. In addition, coconut oil formulated in the form of nanoemulsions demonstrated the efficient antimicrobial activities against Staphylococcus aureus, a gram-positive bacteria. In conclusion, this study represents the effect of mixing speed on the properties of nanoemulsions containing coconut oil which could be further developed as a substitute for topical antibiotics.

Lipids of the intestinal mucosa of normal and essential fatty acid deficient rats

1970 ◽  
Vol 48 (9) ◽  
pp. 631-639 ◽  
Author(s):  
M. Yurkowski ◽  
B. L. Walker
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Free Fatty Acids ◽  
Essential Fatty Acid ◽  
Corn Oil ◽  
Essential Fatty Acids ◽  
Coconut Oil ◽  
Fatty Acid Deficiency ◽  
Arachidonic Acids ◽  
Layer Chromatography

Mucosal lipids were isolated from the proximal, middle, and distal intestinal sections of rats fed diets containing either 10% corn oil or 10% hydrogenated coconut oil, the latter diet being deficient in essential fatty acids. By a combination of column and thin-layer chromatography, the lipids were fractionated and the major components found to consist of triglycerides, free fatty acids, cholesterol, phosphatidylcholine, and phosphatidylethanolamine. Several minor constituents were present. Triglycerides and free fatty acids were generally present in higher concentrations in animals fed corn oil, and the concentration of mucosal triglycerides decreased towards the distal end of the intestine whereas free fatty acids increased in this group. Essential fatty acid deficiency resulted in lower levels of linoleic and arachidonic acids and higher levels of palmitoleic, oleic, and eicosatrienoic acids in the mucosal lipids. Mono- and di-enoic fatty acids tended to decrease in concentration from the proximal to the distal end of the intestine; the polyunsaturated acids and, to some extent, the saturated acids, were lowest in the proximal section of the intestine.

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