نتایج جستجو برای: napls
تعداد نتایج: 101 فیلتر نتایج به سال:
Understanding the dissolution behavior of residual nonaqueous phase liquids (NAPLs) in soil and aquifer is essential for remediation activities related prediction models. In this study, impact wettability pore surfaces on NAPL was investigated natural porous media using X-ray microtomography. Three-dimensional pore-scale characteristics blobs were determined water-wet neutral-wet media. Time-re...
Polymer-functionalized nanoparticles as agents for the in situ remediation of oil-contaminated soils
Abstract In-situ flushing of chemicals, such as nanoparticle (NP) suspensions, and NP-based Pickering emulsions, is a well-promising method for the remediation soils aquifers contaminated with non-aqueous phase liquids (NAPLs) enhanced oil recovery from reservoir rocks. Linear comb-type copolymers were synthesized by combining (i) hydrophilic, anionic monomers like 2-acrylamido-2-methyl-1-propa...
Reductive dechlorination of tetrachloroethene by a mixed bacterial culture growing on ethyl lactate.
Chloroethenes like tetrachloroethene (PCE) are the most prevalent groundwater contaminants in the USA. Their presence as nonaqueous phase liquids (NAPLs) makes remediation difficult. Among options for NAPL cleanup, co-solvent injection has demonstrated success. However, the process has the potential to leave considerable residue of the co-solvent as well as residual chloroethene. Our rationale ...
Laboratory experiments demonstrate that finely divided solid materials (bentonite, iron oxide, magnesium oxide and manganese oxide) can form stable o/w emulsions for NAPLs such as PCBs, TCE, and diesel fuel. These emulsions, referred to as Pickering emulsions, are stabilized by finely divided solid materials that coat the NAPL-water interface; they do not require the presence of a surfactant to...
A recent prospective longitudinal neuroimaging study of 274 prodromal risk syndrome subjects revealed that those who later developed full-blown psychotic symptoms exhibited accelerated gray matter loss and third ventricle expansion around the time of onset of psychosis. Previous studies also indicate that higher levels of unusual thought content during prodromal states are a significant predict...
The equations for a compositional model for simulation of a two-phase, threecomponent system with inter-phase mass transfer are developed. Emphasis is placed on development of inter-phase mass transfer equations for incorporation of ratelimited inter-phase mass transfer. Due to the nature of the three-component systems considered, a single-film model may be inadequate and a two-film model must ...
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