Article
Energy & Fuels
Jianxun Wu, Chao Ma, Weilai Zhang, Weifeng Chang, Yahe Zhang, Quan Shi
Summary: In this study, molecular characterization of sulfur compounds in a whole crude oil was conducted using gas chromatography and mass spectrometry techniques. The crude oil was separated into different fractions and different sulfur compounds were identified and characterized. The study found that the type and content of sulfur compounds vary significantly among the different distillation fractions.
Article
Chemistry, Analytical
Milos Auersvald, Lukas Kejla, Andreas Eschenbacher, Hang Dao Thi, Kevin M. Van Geem, Pavel Simacek
Summary: This study used various gas chromatography techniques to quantitatively analyze the sulfur content in crude bio-oils produced from different biomasses and after hydrotreatment, identifying the most abundant sulfur compounds and finding that hydrogen sulfide was not sufficiently removed during the hydrotreatment process. The analytical methods employed provided unprecedented details about the sulfur speciation in bio-oils, which can further drive research and development in bio-oil upgrading.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Environmental Sciences
Xinguang Wang, Minh Le, Richard Stuetz
Summary: This study compared three different sample preparation and sampling methods for the calibration of volatile sulfur compounds (VSCs), using both gas and liquid standards. The results showed that the dynamic dilution and loop sampling method achieved the best calibration results.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2022)
Article
Energy & Fuels
Jianxun Wu, Weilai Zhang, Yuanfeng Wang, Yahe Zhang, Quan Shi
Summary: A series of novel carotenoid-derived non-thiadiamondoids cage organic sulfur compounds (OSCs) were identified from crude oil. Non-polar sulfur compounds were isolated using the methylation/demethylation method and characterized using FT-ICR MS and GC-MS. The cage OSCs were tentatively identified as 2-thiatricyclo[4.4.0.0<3.8>]decanes. These novel OSCs were found to be generated by biological sulfate reduction, providing new clues for the preservation of hydrocarbons in geological environments through sulfurization. The cage OSCs have the potential to be biomarkers for studying sedimentary environments.
Article
Energy & Fuels
Shengfei Zhang, Jin Huo, Xinge Sun, Fengxiang Yang, Ping Wang, Jianxun Wu, Yahe Zhang, Quan Shi
Summary: Karamay heavy oil in China stands out with its low asphaltene content and high viscosity index, making it ideal for use as a lubricant base oil. The unique chemical composition of the oil presents advantages and challenges in terms of its properties and potential applications.
Article
Engineering, Chemical
Shreshtha Dhankar, Deepika Sharma, Hare Krishna Mohanta, Priya Christina Sande
Summary: This study combines machine learning and prediction of petroleum constituents, trains models for different crude oil compounds, and evaluates the feasibility of the models. The research demonstrates the potential of machine learning in predicting important refinery constituents.
CHEMICAL ENGINEERING & TECHNOLOGY
(2023)
Article
Energy & Fuels
Alessandro Vetere, Daniel Profrock, Wolfgang Schrader
Summary: The article focuses on the molecular analysis of crude oil and its fractions, with a particular emphasis on the challenging task of quantifying sulfur. The proposed method combines sulfur-selective chromatographic separation and mass spectrometry detection for both qualitative and quantitative analysis of sulfur compounds in complex heavy crude oil fractions.
Article
Environmental Sciences
T. Prasantongkolmol, H. Thongkorn, A. Sunipasa, H. A. Do, C. Saeung, S. Jongpatiwut
Summary: Oil spills cause significant damage to marine and coastal ecosystems as well as local economies worldwide. This study investigates the use of Gas Chromatography with Sulfur Chemiluminescence Detection for oil fingerprinting by analyzing the distribution of sulfur compounds in fresh and weathered crude oils. The results show that the distribution of sulfur compounds is unique for each type of crude oil, and the heavy sulfur compounds remain unchanged after weathering. Therefore, the GC-SCD technique can be used to support the identification of oil spills.
MARINE POLLUTION BULLETIN
(2023)
Article
Chemistry, Applied
Fabio Xavier Antunes Sampaio, Karina Santos Garcia, Antonio Fernando de Souza Queiroz, Maria Elisabete Machado
Summary: Organic sulfur compounds in crude oils are important geochemical markers for maturity, lithology, and biodegradation. This study developed a gas chromatography-triple quadrupole mass spectrometry method for the determination of 14 organic sulfur compounds without preliminary fractionation, providing a precise and accurate analytical strategy.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Ahmad K. Hegazy, Zahra S. Hussein, Nermen H. Mohamed, Gehan Safwat, Mohamed A. El-Dessouky, Ilinca Imbrea, Florin Imbrea
Summary: Petroleum oil pollution is a global issue, and phytoremediation is a cost-effective alternative method. This study evaluated the potential of Vinca rosea in the remediation of crude oil-contaminated soil, and the results showed that V. rosea enhanced the degradation of total petroleum hydrocarbons and altered the molecular composition of the crude oil. Additionally, V. rosea was able to extract and accumulate sulfur and heavy metals from the polluted soil.
Article
Chemistry, Applied
Pei Yu, Yini Yang, Jinyuan Sun, Xiao Jia, Chang Zheng, Qi Zhou, Fenghong Huang
Summary: This study analyzed volatile sulfur-containing compounds (VSCs) in 21 cold-pressed rapeseed oils from different regions in China, finding that dimethyl sulfide (DMS) was the most significant aroma contributor. It confirmed S-methylmethionine (SMM) as a crucial precursor of DMS through analysis.
Article
Energy & Fuels
Rafal Gieleciak, Hena Farooqi, Jinwen Chen
Summary: In this study, diesel fractions were obtained by co-hydroprocessing blends of low-grade canola oil and Canadian oil sand bitumen-derived heavy vacuum gas oil (HVGO). The characterization results showed that an increased content of canola oil in the feed blends led to a higher content of normal paraffins (n-paraffins) in the diesel fractions, while the contents of aromatics and cycloparaffins decreased. The formation of n-heptadecane and n-octadecane in the diesel fractions resulted in improved physical and combustion properties.
Article
Chemistry, Applied
Camila Duarte Ferreira Ribeiro, Flavia Barbosa Schappo, Isaias da Silva Sales, Larissa Santos Assuncao, Deborah Murowaniecki Otero, Karina Teixeira Magalhaes-Guedes, Bruna Aparecida Souza Machado, Jane Mara Block, Janice Izabel Druzian, Itaciara Larroza Nunes
Summary: Novel bioactive nanoparticles derived from crude palm oil have been produced for use in food products, showing excellent stability and antioxidant activity. These nanoparticles are proposed as a green innovative product to replace synthetic colorants and antioxidants in food products.
Article
Multidisciplinary Sciences
Zahrani M. Ibrahim, Muller Hendrik, Chanbasha Basheer, Taofiq Olareqaju Abdulraheem, Abdul Rahman Al-Arfaj, Mohammad N. Siddiqui
Summary: The study evaluated the removal of sulfur compounds from crude oil using a membrane extraction flow reactor with a supported liquid membrane and ionic liquid as the extractant. Experimental conditions were optimized, and the method was successfully applied to Arabian crude and diesel samples, showcasing high extraction efficiency for sulfur compounds.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2022)
Article
Thermodynamics
Lu He, Yue Ma, Ting Tan, Changtao Yue, Shuyuan Li, Xun Tang
Summary: Research has shown that during oil shale pyrolysis, the migration and transformation of S and N species in oil shale significantly impact the quality and production of shale oil. By controlling the transformation of S/N, it is possible to improve the quality and production efficiency of shale oil.
