Recovery of Glutaric acid by Reactive Extraction using Tri-n-Octylamine in Different Biodiesels (original) (raw)
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Experimental and Modeling Studies on the Extraction of Glutaric Acid by Trioctylamine
Journal of Chemical & Engineering Data, 2009
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Diesel fuel is very important for countries' economy due to it has wide area of usage such as long haul truck, transportation, railroad, agricultural and construction equipment. Diesel fuel contains different hydrocarbons sulfur and contamination of crude oil residues. On the other side biodiesel does not contain any sulfur, aromatic hydrocarbons, metals and crude oil residues, which reduced the pollution level in Environment. In this work sunflower oil is used for production of biodiesel. In experiment catalysis loading 20%wt/wt, average 5 h methanol oil ration 15:1 and reaction temperature 150°C found to be suitable for biodiesel production. As well as 20% of biodiesel added with diesel show good performance in internal combustion engine.
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International Journal of Chemical Engineering
The present study is aimed at using one of the most promising methods called reactive extraction to extract succinic acid from aqueous solution by using N,N-dioctyloctan-1-amine in biodiesel as diluent made from sunflower oil, rice bran oil, sesame oil, and karanji oil. The results of extraction studies with the diluents (physical) showed their inability to recover any acid by themselves. In reactive extraction, the organic phase extracting power solely depends on tri-n-octylamine. The ranges of the distribution coefficient are found as 7.62–18.12 for sunflower oil biodiesel, 8.33–17.45 for rice bran oil biodiesel, 7.0–17.67 for sesame oil biodiesel, and 9.85–21.36 for karanji oil biodiesel. The ranges of the loading ratio are 0.1–3.0 for sunflower oil biodiesel, 0.1–2.9 for rice bran oil biodiesel, 0.2–2.9 for sesame oil biodiesel, and 0.1–2.9 for karanji oil biodiesel. The karanji and sunflower oil showed higher values of distribution coefficient (KD) over rice bran oil and sesame...
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Reactive separation of glutaric acid with tri-n-butyl phosphate in ethyl acetate and hexanol was studied to explain the effect of temperature on the extraction. Extraction was carried out at different temperature range of 308-338 K. The reactive extraction results were discussed in terms of overall distribution coefficients (K D), degree of extraction (η%), loading ratio (φ), and equilibrium complexation constants (K E). The results showed that an increase in temperature reduced distribution coefficients and extraction efficiency for both diluent used in the organic phase. Moreover, thermodynamic function viz enthalpy (∆H), entropy (∆S) and Gibbs free energy (∆G) were calculated. Reactive extraction of glutaric acid by tri-n-butyl phosphate resulted in negative values of enthalpy. Thus, the reactive extraction process is an exothermic reaction.
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