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The harm assessment and responsibility of marine mineral oil pollution require the content of mineral oil to be obtained by real-time online monitoring. In the present paper, the method of online monitoring of the oil content in water is presented, a creative technology based on optical scattering theory was proposed. Firstly the particle distribution of oil drops was scanned by Marvin laser particle meter, then with the help of the scattering signal, the crude, diesel of different concentrations from 0 to 30 mg x L(-1) was measured in experiment, the linearity is more than 0.99. This paper presents a feasible setup for the online monitoring of the content of mineral oil.
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Langmuir
September 2025
Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao 266580, China.
Surfactant-enhanced spontaneous imbibition is a proven method of enhancing oil recovery from shale reservoirs. However, a significant knowledge gap concerning the impact of clay minerals on surfactant-enhanced imbibition in shale reservoirs remains. Therefore, this study first analyzed the mineral composition and pore structure of the shale reservoirs.
View Article and Find Full Text PDFLangmuir
September 2025
State Grid Hubei Electric Power Xiaogan Power Supply Co., Xiaogan 430075, China.
Corrosive sulfur compounds and trace moisture were key factors causing the rapid deterioration of finished mineral oils. In power systems, insulating oil contaminated by such substances not only threatens the stable operation of power equipment but also transforms into hazardous waste due to performance degradation. This study innovatively developed a sulfur-modified TiO-loaded SiO nanocomposite (S-nTDSGS) adsorbent, which was comprehensively characterized by scanning electron microscopy, X-ray photoelectron spectroscopy, and specific surface area analysis.
View Article and Find Full Text PDFACS Omega
September 2025
Centre of Petroleum Engineering and Geosciences, King Fahd University of Petroleum and Minerals, Dhahran 31261, Kingdom of Saudi Arabia.
The global warming crisis, traceable to the rise in greenhouse gas emissions, has called for more proactive measures to curb the emission levels. To this effect, several technologies have been suggested. Out of the lot, carbon capture, utilization, and storage have been identified as one of the most feasible and pragmatic methods.
View Article and Find Full Text PDFBioresour Technol
September 2025
Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea. Electronic address:
The rapid increase of electronic waste, particularly battery waste, presents significant environmental challenges such as pollutant emissions and resource depletion, emphasizing the need for effective valorization and reuse strategies. This study introduces a novel approach for repurposing end-of-life lithium iron phosphate (LFP) batteries as catalysts in the pyrolysis of walnut shells (WS). Characterization analyses revealed that LFP provides both Lewis and Brønsted acid sites, which alter the thermal decomposition pathway of WS.
View Article and Find Full Text PDFPLoS One
September 2025
Daqing Yongzhu Petroleum Technology Development Co Ltd., Daqing, China.
Background: Strongly water-sensitive reservoirs with high clay content face challenges in conventional development due to clay swelling and impeded seepage. CO2 injection shows potential for enhanced oil recovery (EOR) and carbon sequestration; however, the role of clay minerals in regulating CO2-induced asphaltene deposition and sequestration remains unclear.
Methodology: We conducted experiments on clay-oil interactions, nuclear magnetic resonance (NMR), measurements of crude oil properties, and long core water flooding tests to evaluate deposition, reservoir damage, and CO2 sequestration.