نتایج جستجو برای: naphthenic acids
تعداد نتایج: 265175 فیلتر نتایج به سال:
The recent study by O’Reilly et al. [1] describing the identification of 197 esters likely related to the biodegradation of petroleum hydrocarbons in 61 groundwater samples from 10 fuel release sites in California lacks evidence that these compounds have a “low toxicological profile,” which is the argument used by the authors to promote the routine use of silica gel cleanup. The detection ofmor...
Boreal wetlands play an important role in global carbon balance. However, their ecosystem function is threatened by direct anthropogenic disturbance and climate change. Oil sands surface mining in the boreal regions of Western Canada denudes tracts of land of organic materials, leaves large areas in need of reclamation, and generates considerable quantities of extraction process-affected materi...
Molecular dynamics (MD) simulation is an advanced tool to explore the interaction mechanism between aged bitumen and rejuvenators at nanoscale. However, general MD molecular structures of led lower quantify inaccuracy outputs. This study aims developing more realistic models represent generic for recycling. Four types (bio-oil, engine-oil, naphthenic-oil, aromatic-oil) are characterized in term...
Hydrocarbon oxidation products (HOPs) formed from crude oil and diesel were generated laboratory simulated spills at four different periods (1, 4, 7, 10 days) under environmental conditions that mimicked those in Cook Inlet, Alaska.
The present work deals with a mechanistic model of visbreaking (VB) process. It allows satisfactory predictions of feed and products, amounts and properties overcoming the typical limitations of the empirical models (for instance, in terms of flexibility, extrapolability and so on). The mechanistic VB modeling was initially performed by taking into account just two macro-classes of pseudo-compo...
The article deals with the process of “waxing” pipes and choice effective measures to prevent these negative phenomena. To assess nature asphalt-resin-paraffin deposits (ARPD) select a further investigation scheme, X-ray Spectral analysis was used. It is shown, that ARPD complex system structured by resinous-asphaltene substances paraffin-naphthenic or paraffin-aromatic hydrocarbons.Mass transf...
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