1H low- and high-field NMR study of the effects of plasma treatment on the oil and water fractions in crude heavy oil

Honorato, Hercílio de Angeli; Silva, Renzo C.; Piumbini, Cleiton K.; Zucolotto, Carlos G.; Souza, Ademária Aparecida de; Cunha, Ana Cristina Barros da; Emmerich, Francisco G.; Lacerda, Valdemar; Castro, Eustáquio Vinícius Ribeiro de; Bonagamba, Tito J.; Freitas, Jair C. C.

doi:10.1016/j.fuel.2011.08.009

Cited by 17 publications

(7 citation statements)

References 20 publications

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“…In other work, the (temperature varied) viscosity of CO 2 plasma-treated heavy oil shows a linear trend with the logarithmic mean T 2 from around 1000 -30000 mPa.s [44].…”

Section: Accepted Manuscriptmentioning

confidence: 64%

NMR relaxometry and diffusometry in characterizing structural, interfacial and colloidal properties of heavy oils and oil sands

Jones

Taylor

2015

Advances in Colloid and Interface Science

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“…In other work, the (temperature varied) viscosity of CO 2 plasma-treated heavy oil shows a linear trend with the logarithmic mean T 2 from around 1000 -30000 mPa.s [44].…”

Section: Accepted Manuscriptmentioning

confidence: 64%

NMR relaxometry and diffusometry in characterizing structural, interfacial and colloidal properties of heavy oils and oil sands

Jones

Taylor

2015

Advances in Colloid and Interface Science

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“…Finally, heavy oil has also been modified by plasma in the last decade as a promising conversion method for different kinds of hydrocarbons [337,338,339]. Crude heavy oil has been submitted to a DBD plasma treatment using different gases and various treatment times by Honorato et al [340], after which the properties of the heavy oils were characterized and the basic sediments and water contents of the oil was determined using 1 H low and high field nuclear magnetic resonance (NMR). No significant changes in the viscosity of the oil fraction and no changes in the chemical shifts associated with any of the oil components were observed after plasma treatment.…”

Section: Applications Of Plasma-liquid Systemsmentioning

confidence: 99%

Applications of Plasma-Liquid Systems: A Review

et al. 2019

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Plasma-liquid systems have attracted increasing attention in recent years, owing to their high potential in material processing and nanoscience, environmental remediation, sterilization, biomedicine, and food applications. Due to the multidisciplinary character of this scientific field and due to its broad range of established and promising applications, an updated overview is required, addressing the various applications of plasma-liquid systems till now. In the present review, after a brief historical introduction on this important research field, the authors aimed to bring together a wide range of applications of plasma-liquid systems, including nanomaterial processing, water analytical chemistry, water purification, plasma sterilization, plasma medicine, food preservation and agricultural processing, power transformers for high voltage switching, and polymer solution treatment. Although the general understanding of plasma-liquid interactions and their applications has grown significantly in recent decades, it is aimed here to give an updated overview on the possible applications of plasma-liquid systems. This review can be used as a guide for researchers from different fields to gain insight in the history and state-of-the-art of plasma-liquid interactions and to obtain an overview on the acquired knowledge in this field up to now.

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“…Honorato et al have reported the application of TD-NMR to monitor the chemical and phsical properties of Brazilian heavy oil submitted to plasma treatment. 21 The crude oil was treated in a dielectric barrier discharge plasma reactor using natural gas, CO 2 , or H 2 as the working gas. The results indicated a large drop in the water content of the plasma-treated samples as compared to the crude oil, allowing the application of low-field NMR to follow the effects of plasma treatments on heavy oils.…”

Section: Introductionmentioning

confidence: 99%

“…In both cases, the PLSR models showed good performance, with a standard error of prediction of 0.161 and 0.135 log cP for the T 2 relaxation spectra and relaxation curves, respectively. Honorato et al have reported the application of TD-NMR to monitor the chemical and phsical properties of Brazilian heavy oil submitted to plasma treatment . The crude oil was treated in a dielectric barrier discharge plasma reactor using natural gas, CO 2 , or H 2 as the working gas.…”

Section: Introductionmentioning

confidence: 99%

Time Domain-NMR Combined with Chemometrics Analysis: An Alternative Tool for Monitoring Diesel Fuel Quality

et al. 2015

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Time-domain nuclear magnetic resonance (TD-NMR) was explored as a rapid method for simultaneous assessment of the quality parameters in commercial diesel samples (B5 diesel-biodiesel blend). A principal component analysis (PCA) obtained with the relaxation decay curves revealed tight and well-separated clusters, allowing discrimination of the diesel samples according to the sulfur content: 10 (S10), 500 (S500), and 1800 (S1800) mg kg–1. Classification models based on the soft independent modeling of class analogy (SIMCA) showed a good discrimination power with a percentage of correct classification ranging from 90% (for S500 diesel samples) to 100% (for S10 and S1800 diesel samples). Partial least-squares regression (PLSR) was used to estimate the cetane index, density, flash point, and temperature achieved during distillation to obtain 50% of the distilled (T50) physicochemical parameters in the commercial diesel samples. The best PLSR models were obtained with two latent variables, providing a standard error of prediction (RMSEP) of 0.60, 2.37 kg m–3, 3.24, and 2.20 °C for the cetane index, density, flash point, and T50, respectively, which represents the accuracy of the models. The results support the application of TD-NMR to evaluate the quality of B5 diesel, providing a simple, rapid, and nondestructive method for the petrofuel industry.

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1H low- and high-field NMR study of the effects of plasma treatment on the oil and water fractions in crude heavy oil

Cited by 17 publications

References 20 publications

NMR relaxometry and diffusometry in characterizing structural, interfacial and colloidal properties of heavy oils and oil sands

NMR relaxometry and diffusometry in characterizing structural, interfacial and colloidal properties of heavy oils and oil sands

Applications of Plasma-Liquid Systems: A Review

Time Domain-NMR Combined with Chemometrics Analysis: An Alternative Tool for Monitoring Diesel Fuel Quality

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