Recovery of impregnated hydrocarbon in drill cuttings using supercritical carbon dioxide

•Supercritical carbon dioxide reduces the amount of hydrocarbons in drill cuttings•Texture of drill cuttings is not affected by the supercritical extraction process•Supercritical pressure affected more than the temperature in the extraction process•The use of supercritical carbon dioxide reduces the...

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Veröffentlicht in:Journal of environmental management 2021-05, Vol.285, p.112134-112134, Article 112134
Hauptverfasser: Rodríguez-López, Laura Cristel, Ojeda-Morales, Marcia E., Córdova-Bautista, Yolanda, Hernández-Rivera, Miguel A., López-Lázaro, José de los Santos
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container_end_page 112134
container_issue
container_start_page 112134
container_title Journal of environmental management
container_volume 285
creator Rodríguez-López, Laura Cristel
Ojeda-Morales, Marcia E.
Córdova-Bautista, Yolanda
Hernández-Rivera, Miguel A.
López-Lázaro, José de los Santos
description •Supercritical carbon dioxide reduces the amount of hydrocarbons in drill cuttings•Texture of drill cuttings is not affected by the supercritical extraction process•Supercritical pressure affected more than the temperature in the extraction process•The use of supercritical carbon dioxide reduces the population of bacteria and fungi Pollution due to waste generated by the oil industry has led to serious damage to ecosystems and the environment. Therefore, preventive and corrective actions must be taken to mitigate the ecological impact of waste resulting from oil-related activities, to explore and implement environment-friendly approaches, and achieve sustainable development. In this study, an alternative treatment for cuttings generated during the drilling of oil wells was investigated by extracting the hydrocarbons present in such cuttings through the use of carbon dioxide under supercritical conditions. The extractions were performed in a Supercritical Fluid Technologies Inc. Model SFT-150 extractor, under varying pressure (2300–6600 psi) and temperature (52–109 °C), while maintaining constant carbon dioxide flow rate and extraction time, to analyse the effect of these two thermodynamic variables on the extraction efficiency. During supercritical extraction, 21.51 g of total hydrocarbons from drill cuttings (oil/kg) were recovered at 6000 psi and 100 °C. The results indicated that pressure had the strongest effect on the extraction yield, with only a small amount of hydrocarbons recovered at the lowest pressure for all fractions. At 3000 psi pressure, increasing the temperature led to an increase in the extraction yield.
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Therefore, preventive and corrective actions must be taken to mitigate the ecological impact of waste resulting from oil-related activities, to explore and implement environment-friendly approaches, and achieve sustainable development. In this study, an alternative treatment for cuttings generated during the drilling of oil wells was investigated by extracting the hydrocarbons present in such cuttings through the use of carbon dioxide under supercritical conditions. The extractions were performed in a Supercritical Fluid Technologies Inc. Model SFT-150 extractor, under varying pressure (2300–6600 psi) and temperature (52–109 °C), while maintaining constant carbon dioxide flow rate and extraction time, to analyse the effect of these two thermodynamic variables on the extraction efficiency. During supercritical extraction, 21.51 g of total hydrocarbons from drill cuttings (oil/kg) were recovered at 6000 psi and 100 °C. The results indicated that pressure had the strongest effect on the extraction yield, with only a small amount of hydrocarbons recovered at the lowest pressure for all fractions. At &lt;3000 psi pressure, increasing the temperature led to a decrease in the amount of recovered hydrocarbons; at &gt;3000 psi pressure, increasing the temperature led to an increase in the extraction yield.</description><identifier>ISSN: 0301-4797</identifier><identifier>EISSN: 1095-8630</identifier><identifier>DOI: 10.1016/j.jenvman.2021.112134</identifier><identifier>PMID: 33588162</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Carbon Dioxide ; Drill cuttings ; Ecosystem ; Hydrocarbons ; Oil and Gas Fields ; Pollution ; Supercritical fluid extraction ; Temperature</subject><ispartof>Journal of environmental management, 2021-05, Vol.285, p.112134-112134, Article 112134</ispartof><rights>2021 Elsevier Ltd</rights><rights>Copyright © 2021 Elsevier Ltd. 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Therefore, preventive and corrective actions must be taken to mitigate the ecological impact of waste resulting from oil-related activities, to explore and implement environment-friendly approaches, and achieve sustainable development. In this study, an alternative treatment for cuttings generated during the drilling of oil wells was investigated by extracting the hydrocarbons present in such cuttings through the use of carbon dioxide under supercritical conditions. The extractions were performed in a Supercritical Fluid Technologies Inc. Model SFT-150 extractor, under varying pressure (2300–6600 psi) and temperature (52–109 °C), while maintaining constant carbon dioxide flow rate and extraction time, to analyse the effect of these two thermodynamic variables on the extraction efficiency. During supercritical extraction, 21.51 g of total hydrocarbons from drill cuttings (oil/kg) were recovered at 6000 psi and 100 °C. The results indicated that pressure had the strongest effect on the extraction yield, with only a small amount of hydrocarbons recovered at the lowest pressure for all fractions. 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Therefore, preventive and corrective actions must be taken to mitigate the ecological impact of waste resulting from oil-related activities, to explore and implement environment-friendly approaches, and achieve sustainable development. In this study, an alternative treatment for cuttings generated during the drilling of oil wells was investigated by extracting the hydrocarbons present in such cuttings through the use of carbon dioxide under supercritical conditions. The extractions were performed in a Supercritical Fluid Technologies Inc. Model SFT-150 extractor, under varying pressure (2300–6600 psi) and temperature (52–109 °C), while maintaining constant carbon dioxide flow rate and extraction time, to analyse the effect of these two thermodynamic variables on the extraction efficiency. During supercritical extraction, 21.51 g of total hydrocarbons from drill cuttings (oil/kg) were recovered at 6000 psi and 100 °C. The results indicated that pressure had the strongest effect on the extraction yield, with only a small amount of hydrocarbons recovered at the lowest pressure for all fractions. At &lt;3000 psi pressure, increasing the temperature led to a decrease in the amount of recovered hydrocarbons; at &gt;3000 psi pressure, increasing the temperature led to an increase in the extraction yield.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>33588162</pmid><doi>10.1016/j.jenvman.2021.112134</doi><tpages>1</tpages></addata></record>
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subjects Carbon Dioxide
Drill cuttings
Ecosystem
Hydrocarbons
Oil and Gas Fields
Pollution
Supercritical fluid extraction
Temperature
title Recovery of impregnated hydrocarbon in drill cuttings using supercritical carbon dioxide
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