The Experts below are selected from a list of 102 Experts worldwide ranked by ideXlab platform
Maximo Gallignani - One of the best experts on this subject based on the ideXlab platform.
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optimum phase behavior formulation of surfactant oil water systems for the determination of chromium in heavy crude oil and in bitumen in water emulsion
Talanta, 2003Co-Authors: J L Burguera, Rita M Avilagomez, M Burguera, Raquel Anton De Salager, Jeanlouis Salager, Carlos Bracho, Margarita Burguerapascu, Constantin Burguerapascu, Rosario Brunetto, Maximo GallignaniAbstract:An “oil in water” formulation was optimized to determine chromium in heavy crude oil (HCO) and bitumen-in-water emulsion (Orimulsion-400®) samples by transversally heated electrothermal atomic absorption spectrometry (TH-ET AAS) using Zeeman effect background correction. The optimum proportion of the oil–water mixture ratio was 7:3 v/v (70 ml of oil as the internal phase) with a non-ionic surfactant concentration (Intan-100) in the emulsion of 0.2% w/w. Chromium was determined in different crude oil samples after dilution of the emulsions 1:9 v/v with a 0.2% w/w solution of surfactant in order to further reduce the viscosity from 100 to 1.6 cP and at the same time to bring the concentration of chromium within the working range of the ET AAS technique. The calibration graph was linear from 1.7 to 100 μg Cr l−1. The sensitivity was of 0.0069 s l μg−1, the characteristic mass (mo) was of 5.7 pg per 0.0044 s and the detection limit (3σ) was of 0.52 μg l−1. The relative standard deviation of the method, evaluated by replicate analyses of three crude oil samples varied in all cases between 1.5 and 2.6%. Recovery studies were performed on four Venezuelan crude oils, and the average chromium recovery values varied between 95.9–104.8, 90.6–107.6, 95.6–104.0 and 98.8–103.9% for the Cerro Negro, Crudo Hamaca and Boscan crude oils and for the Orimulsion®-400, respectively. The results obtained in this work for the Cerro Negro, Crudo Hamaca and Boscan crude oils and for the Orimulsion®-400 following the proposed procedure were of 0.448±0.008, 0.338±0.004 0.524±0.021 and 0.174±0.008 mg Cr l−1, respectively, which were in good agreement with the values obtained by a tedious recommended standard procedure (respectively: 0.470±0.05, 0.335±0.080, 0.570±0.021 and 0.173±0.009 mg Cr l−1).
J L Burguera - One of the best experts on this subject based on the ideXlab platform.
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optimum phase behavior formulation of surfactant oil water systems for the determination of chromium in heavy crude oil and in bitumen in water emulsion
Talanta, 2003Co-Authors: J L Burguera, Rita M Avilagomez, M Burguera, Raquel Anton De Salager, Jeanlouis Salager, Carlos Bracho, Margarita Burguerapascu, Constantin Burguerapascu, Rosario Brunetto, Maximo GallignaniAbstract:An “oil in water” formulation was optimized to determine chromium in heavy crude oil (HCO) and bitumen-in-water emulsion (Orimulsion-400®) samples by transversally heated electrothermal atomic absorption spectrometry (TH-ET AAS) using Zeeman effect background correction. The optimum proportion of the oil–water mixture ratio was 7:3 v/v (70 ml of oil as the internal phase) with a non-ionic surfactant concentration (Intan-100) in the emulsion of 0.2% w/w. Chromium was determined in different crude oil samples after dilution of the emulsions 1:9 v/v with a 0.2% w/w solution of surfactant in order to further reduce the viscosity from 100 to 1.6 cP and at the same time to bring the concentration of chromium within the working range of the ET AAS technique. The calibration graph was linear from 1.7 to 100 μg Cr l−1. The sensitivity was of 0.0069 s l μg−1, the characteristic mass (mo) was of 5.7 pg per 0.0044 s and the detection limit (3σ) was of 0.52 μg l−1. The relative standard deviation of the method, evaluated by replicate analyses of three crude oil samples varied in all cases between 1.5 and 2.6%. Recovery studies were performed on four Venezuelan crude oils, and the average chromium recovery values varied between 95.9–104.8, 90.6–107.6, 95.6–104.0 and 98.8–103.9% for the Cerro Negro, Crudo Hamaca and Boscan crude oils and for the Orimulsion®-400, respectively. The results obtained in this work for the Cerro Negro, Crudo Hamaca and Boscan crude oils and for the Orimulsion®-400 following the proposed procedure were of 0.448±0.008, 0.338±0.004 0.524±0.021 and 0.174±0.008 mg Cr l−1, respectively, which were in good agreement with the values obtained by a tedious recommended standard procedure (respectively: 0.470±0.05, 0.335±0.080, 0.570±0.021 and 0.173±0.009 mg Cr l−1).
Jeanlouis Salager - One of the best experts on this subject based on the ideXlab platform.
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INTEGRATED PROCESS TO TRANSPORT HEAVY CRUDE OILS AS AN O/W EMULSION: RECENT ADVANCES
2016Co-Authors: Jeanlouis Salager, María Patricia RodríguezAbstract:Abstract: The long distance transport of emulsified heavy crude oils has been shown to be a feasible alternative in the 1980’s with the Orimulsion project in western Venezuela, and may be an alternative in cold climate as in the peruvian Andes mountain range or in Canada plains. Most studies have been focussing on the O/W emulsion transport stage, though the overall process involves three stages, i.e. the emulsification, the O/W emulsion flow through a pipeline and the demulsification, which cannot be considered as independent issues. An integrated approach may be designed by fine-tuning formulation changes that provide property adjustments in each stage and allow to optimize the process as a whole
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optimum phase behavior formulation of surfactant oil water systems for the determination of chromium in heavy crude oil and in bitumen in water emulsion
Talanta, 2003Co-Authors: J L Burguera, Rita M Avilagomez, M Burguera, Raquel Anton De Salager, Jeanlouis Salager, Carlos Bracho, Margarita Burguerapascu, Constantin Burguerapascu, Rosario Brunetto, Maximo GallignaniAbstract:An “oil in water” formulation was optimized to determine chromium in heavy crude oil (HCO) and bitumen-in-water emulsion (Orimulsion-400®) samples by transversally heated electrothermal atomic absorption spectrometry (TH-ET AAS) using Zeeman effect background correction. The optimum proportion of the oil–water mixture ratio was 7:3 v/v (70 ml of oil as the internal phase) with a non-ionic surfactant concentration (Intan-100) in the emulsion of 0.2% w/w. Chromium was determined in different crude oil samples after dilution of the emulsions 1:9 v/v with a 0.2% w/w solution of surfactant in order to further reduce the viscosity from 100 to 1.6 cP and at the same time to bring the concentration of chromium within the working range of the ET AAS technique. The calibration graph was linear from 1.7 to 100 μg Cr l−1. The sensitivity was of 0.0069 s l μg−1, the characteristic mass (mo) was of 5.7 pg per 0.0044 s and the detection limit (3σ) was of 0.52 μg l−1. The relative standard deviation of the method, evaluated by replicate analyses of three crude oil samples varied in all cases between 1.5 and 2.6%. Recovery studies were performed on four Venezuelan crude oils, and the average chromium recovery values varied between 95.9–104.8, 90.6–107.6, 95.6–104.0 and 98.8–103.9% for the Cerro Negro, Crudo Hamaca and Boscan crude oils and for the Orimulsion®-400, respectively. The results obtained in this work for the Cerro Negro, Crudo Hamaca and Boscan crude oils and for the Orimulsion®-400 following the proposed procedure were of 0.448±0.008, 0.338±0.004 0.524±0.021 and 0.174±0.008 mg Cr l−1, respectively, which were in good agreement with the values obtained by a tedious recommended standard procedure (respectively: 0.470±0.05, 0.335±0.080, 0.570±0.021 and 0.173±0.009 mg Cr l−1).
Rosario Brunetto - One of the best experts on this subject based on the ideXlab platform.
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optimum phase behavior formulation of surfactant oil water systems for the determination of chromium in heavy crude oil and in bitumen in water emulsion
Talanta, 2003Co-Authors: J L Burguera, Rita M Avilagomez, M Burguera, Raquel Anton De Salager, Jeanlouis Salager, Carlos Bracho, Margarita Burguerapascu, Constantin Burguerapascu, Rosario Brunetto, Maximo GallignaniAbstract:An “oil in water” formulation was optimized to determine chromium in heavy crude oil (HCO) and bitumen-in-water emulsion (Orimulsion-400®) samples by transversally heated electrothermal atomic absorption spectrometry (TH-ET AAS) using Zeeman effect background correction. The optimum proportion of the oil–water mixture ratio was 7:3 v/v (70 ml of oil as the internal phase) with a non-ionic surfactant concentration (Intan-100) in the emulsion of 0.2% w/w. Chromium was determined in different crude oil samples after dilution of the emulsions 1:9 v/v with a 0.2% w/w solution of surfactant in order to further reduce the viscosity from 100 to 1.6 cP and at the same time to bring the concentration of chromium within the working range of the ET AAS technique. The calibration graph was linear from 1.7 to 100 μg Cr l−1. The sensitivity was of 0.0069 s l μg−1, the characteristic mass (mo) was of 5.7 pg per 0.0044 s and the detection limit (3σ) was of 0.52 μg l−1. The relative standard deviation of the method, evaluated by replicate analyses of three crude oil samples varied in all cases between 1.5 and 2.6%. Recovery studies were performed on four Venezuelan crude oils, and the average chromium recovery values varied between 95.9–104.8, 90.6–107.6, 95.6–104.0 and 98.8–103.9% for the Cerro Negro, Crudo Hamaca and Boscan crude oils and for the Orimulsion®-400, respectively. The results obtained in this work for the Cerro Negro, Crudo Hamaca and Boscan crude oils and for the Orimulsion®-400 following the proposed procedure were of 0.448±0.008, 0.338±0.004 0.524±0.021 and 0.174±0.008 mg Cr l−1, respectively, which were in good agreement with the values obtained by a tedious recommended standard procedure (respectively: 0.470±0.05, 0.335±0.080, 0.570±0.021 and 0.173±0.009 mg Cr l−1).
Constantin Burguerapascu - One of the best experts on this subject based on the ideXlab platform.
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optimum phase behavior formulation of surfactant oil water systems for the determination of chromium in heavy crude oil and in bitumen in water emulsion
Talanta, 2003Co-Authors: J L Burguera, Rita M Avilagomez, M Burguera, Raquel Anton De Salager, Jeanlouis Salager, Carlos Bracho, Margarita Burguerapascu, Constantin Burguerapascu, Rosario Brunetto, Maximo GallignaniAbstract:An “oil in water” formulation was optimized to determine chromium in heavy crude oil (HCO) and bitumen-in-water emulsion (Orimulsion-400®) samples by transversally heated electrothermal atomic absorption spectrometry (TH-ET AAS) using Zeeman effect background correction. The optimum proportion of the oil–water mixture ratio was 7:3 v/v (70 ml of oil as the internal phase) with a non-ionic surfactant concentration (Intan-100) in the emulsion of 0.2% w/w. Chromium was determined in different crude oil samples after dilution of the emulsions 1:9 v/v with a 0.2% w/w solution of surfactant in order to further reduce the viscosity from 100 to 1.6 cP and at the same time to bring the concentration of chromium within the working range of the ET AAS technique. The calibration graph was linear from 1.7 to 100 μg Cr l−1. The sensitivity was of 0.0069 s l μg−1, the characteristic mass (mo) was of 5.7 pg per 0.0044 s and the detection limit (3σ) was of 0.52 μg l−1. The relative standard deviation of the method, evaluated by replicate analyses of three crude oil samples varied in all cases between 1.5 and 2.6%. Recovery studies were performed on four Venezuelan crude oils, and the average chromium recovery values varied between 95.9–104.8, 90.6–107.6, 95.6–104.0 and 98.8–103.9% for the Cerro Negro, Crudo Hamaca and Boscan crude oils and for the Orimulsion®-400, respectively. The results obtained in this work for the Cerro Negro, Crudo Hamaca and Boscan crude oils and for the Orimulsion®-400 following the proposed procedure were of 0.448±0.008, 0.338±0.004 0.524±0.021 and 0.174±0.008 mg Cr l−1, respectively, which were in good agreement with the values obtained by a tedious recommended standard procedure (respectively: 0.470±0.05, 0.335±0.080, 0.570±0.021 and 0.173±0.009 mg Cr l−1).