The effect of ultrasonic assisted extraction (UAE) process on oil recovery from refinery oily sludge was examined in this study. Two types of UAE treatment including UAE probe (UAEP) system and UAE bath (UAEB) system were investigated. Their oil recovery efficiencies were compared to that of mechanical shaking extraction (MSE). Three solvents including cyclohexane (CHX), ethyl acetate (EA), and methyl ethyl ketone (MEK) were examined as the extraction solvents. The influence of experimental factors on oil and solvent recovery was investigated using an orthogonal experimental design. Results indicated that solvent type, solvent-to-sludge (S/S) ratio, and treatment duration could have significant effects on oil recovery in UAE treatment. Under the optimum conditions, UAEP treatment can obtain an oil recovery of 68.8% within 20 s, which was higher than that (i.e., 62.0%) by MSE treatment after 60 min' extraction. UAEB treatment can also obtain a promising oil recovery within shorter extraction duration (i.e., 15 min) than MSE. UAE was thus illustrated as an effective and improved approach for oily sludge recycling.
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http://dx.doi.org/10.1080/10934529.2016.1191308 | DOI Listing |
Retina
January 2025
Department of Ophthalmology, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
Purpose: To evaluate preoperative and early postoperative factors associated with changes in visual acuity in macula-off rhegmatogenous retinal detachment (RRD) patients.
Methods: A retrospective review of 59 eyes from 59 patients who underwent pars plana vitrectomy (PPV) and silicone oil (SiO) tamponade for macula-off RRD. Preoperative and early postoperative characteristics were analyzed using the classification and regression tree (CART) analysis.
Prep Biochem Biotechnol
January 2025
Department of Physical Science, Sant Baba Bagh Singh University, Jalandhar, Punjab, India.
Fungal lipases are the leading industrial biocatalyst due to their broad applications, but high cost limits their commercial usage. The low-cost agri-residues substrates can reduce the cost of lipase production. However, the compatibility of agri-residue with fungal species, recovery process of lipase and stability of the enzyme are crucial steps.
View Article and Find Full Text PDFFood Chem X
January 2025
Academy of National Food and Strategic Reserves Administration, NFSRA Key Laboratory of Grain and oil quality and safety, Beijing 100037, China.
The contamination of Alternaria toxins poses a potential risk to human health. This study developed a rapid, efficient, and environmentally friendly method for the simultaneous determination of five types of Alternaria toxins in wheat using high-precision and stable isotope liquid chromatography tandem mass spectrometry. The comparison between dilution method and solid-phase extraction method shows that the former achieves satisfactory results with a simple and convenient sample purification method.
View Article and Find Full Text PDFFront Plant Sci
January 2025
Key Laboratory of Germplasm Innovation and Genetic Improvement of Grain and Oil Crops (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Crop Breeding and Cultivation Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China.
Introduction: Huruan1212 (HR1212) is well-regarded for its superior eating and cooking quality in the lower reaches of the Yangtze River in China. Still, its high susceptibility to rice panicle blast and lack of fragrance have limited its further spread and utilization. and are two dominant genes known for their stable broad-spectrum resistance against rice blast fungus , while is the crucial gene that regulates rice aroma.
View Article and Find Full Text PDFSci Rep
January 2025
Department of Petroleum Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran.
Enhancing oil recovery in sandstone reservoirs, particularly through smart water flooding, is an appealing area of research that has been thoroughly documented. However, few studies have examined the formation of water-in-heavy oil emulsion because of the incompatibility between the injected water-folded ions, clay particles, and heavy fraction in the oil phase. In this study, we investigated the synergistic roles of asphaltene and clay in the smart water flooding process using a novel experimental approach.
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