FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W156770682> ?p ?o ?g. }

• W156770682 abstract "Colloidal suspensions of engineered nanoparticles have been studied in recent years for waste water and in-situ groundwater remediation. Zero-valent iron particles represent a promising technology for groundwater remediation via abiotic reduction. However, due to strong magnetic particle-particle attraction (in the case of nano-sized particles) and to gravitational settling (in the case of nano-sized particles), iron colloids dispersed in pure water are not stable. Therefore, solutions of green biopolymers (e.g. starch, guar gum, xanthan gum), characterized by viscous - shear thinning - properties, have been recently studied as dispersants and stabilizers for iron slurries, thus enhancing stability against sedimentation and increasing particles mobility in saturated porous media (Tiraferri et al. 2008, Tiraferri and Sethi 2009). Therefore, contaminant degradation is first achieved via rapid chemical reduction (provided by the iron particles), and then by long-term biological processes, enhanced by the degradation of the biopolymers used to stabilize the slurry. In this work, co-funded by European Union project AQUAREHAB (FP7 - Grant Agreement Nr. 226565), a modelling approach is described to simulate the transport in porous media of nanoscale iron bioslurries. Colloid transport in saturated porous media is controlled by particle-particle and particle-collector interactions. In case of highly concentrated suspensions of iron particles, the hydrodynamic parameters (porosity, hydraulic conductivity) and fluid properties (e.g. viscosity) cannot be considered independent on the concentration of deposed and suspended colloids (Mays and Hunt 2005, Tiraferri and Sethi 2009). None of the colloid transport models previously reported in the literature could simulate the non-Newtonian nature of the carrier fluid, nor the influence of the concentration of suspended colloids on the fluid properties. Consequently, a numerical model (E-MNM1D, Enhanced Micro-and Nanoparticle transport Model in porous media in 1D geometry) was developed to simulate the transport of the iron bioslurries. The complex, non-Newtonian rheological properties of the suspensions are accounted for through a variable apparent viscosity, function of polymer and suspended iron particle concentrations. The transport of iron particles is modelled using a dual-site approach accounting for straining and physico-chemical deposition/release phenomena (Tosco and Sethi 2010). The progressive clogging of the porous medium, due to deposition and filtration of a relevant mass of particles and aggregates, is modelled including changes in pore velocity, viscosity, density and porosity due to the progressive deposition of iron particles, and to highly viscosity of the carrier fluid. A general formulation for reversible deposition is also proposed, that includes all commonly applied dynamics (linear attachment, blocking, ripening). Clogging of the porous medium due to deposition of iron particles is modelled by tying porosity and permeability to deposited iron particles. E-MNM1D, implemented in a Matlab environment with an Excel input/output interface, can be downloaded at www.polito.itngroundwaternsoftware" @default.
• W156770682 created "2016-06-24" @default.
• W156770682 creator A5051666753 @default.
• W156770682 creator A5085213956 @default.
• W156770682 date "2011-01-01" @default.
• W156770682 modified "2023-09-23" @default.
• W156770682 title "Transport in porous media of iron-based bioslurries for groundwater remediation" @default.
• W156770682 cites W2007128103 @default.
• W156770682 cites W2081074034 @default.
• W156770682 cites W2083024880 @default.
• W156770682 cites W2146548707 @default.
• W156770682 hasPublicationYear "2011" @default.
• W156770682 type Work @default.
• W156770682 sameAs 156770682 @default.
• W156770682 citedByCount "1" @default.
• W156770682 countsByYear W1567706822015 @default.
• W156770682 crossrefType "journal-article" @default.
• W156770682 hasAuthorship W156770682A5051666753 @default.
• W156770682 hasAuthorship W156770682A5085213956 @default.
• W156770682 hasConcept C105341887 @default.
• W156770682 hasConcept C105569014 @default.
• W156770682 hasConcept C111368507 @default.
• W156770682 hasConcept C112570922 @default.
• W156770682 hasConcept C127172972 @default.
• W156770682 hasConcept C127313418 @default.
• W156770682 hasConcept C127413603 @default.
• W156770682 hasConcept C148815931 @default.
• W156770682 hasConcept C150394285 @default.
• W156770682 hasConcept C159985019 @default.
• W156770682 hasConcept C173209714 @default.
• W156770682 hasConcept C178790620 @default.
• W156770682 hasConcept C185592680 @default.
• W156770682 hasConcept C18903297 @default.
• W156770682 hasConcept C191897082 @default.
• W156770682 hasConcept C192562407 @default.
• W156770682 hasConcept C202444582 @default.
• W156770682 hasConcept C2777781897 @default.
• W156770682 hasConcept C2778517922 @default.
• W156770682 hasConcept C33923547 @default.
• W156770682 hasConcept C37992848 @default.
• W156770682 hasConcept C39432304 @default.
• W156770682 hasConcept C40472508 @default.
• W156770682 hasConcept C42360764 @default.
• W156770682 hasConcept C522964758 @default.
• W156770682 hasConcept C5961521 @default.
• W156770682 hasConcept C59789625 @default.
• W156770682 hasConcept C6648577 @default.
• W156770682 hasConcept C86803240 @default.
• W156770682 hasConcept C87717796 @default.
• W156770682 hasConcept C94293008 @default.
• W156770682 hasConceptScore W156770682C105341887 @default.
• W156770682 hasConceptScore W156770682C105569014 @default.
• W156770682 hasConceptScore W156770682C111368507 @default.
• W156770682 hasConceptScore W156770682C112570922 @default.
• W156770682 hasConceptScore W156770682C127172972 @default.
• W156770682 hasConceptScore W156770682C127313418 @default.
• W156770682 hasConceptScore W156770682C127413603 @default.
• W156770682 hasConceptScore W156770682C148815931 @default.
• W156770682 hasConceptScore W156770682C150394285 @default.
• W156770682 hasConceptScore W156770682C159985019 @default.
• W156770682 hasConceptScore W156770682C173209714 @default.
• W156770682 hasConceptScore W156770682C178790620 @default.
• W156770682 hasConceptScore W156770682C185592680 @default.
• W156770682 hasConceptScore W156770682C18903297 @default.
• W156770682 hasConceptScore W156770682C191897082 @default.
• W156770682 hasConceptScore W156770682C192562407 @default.
• W156770682 hasConceptScore W156770682C202444582 @default.
• W156770682 hasConceptScore W156770682C2777781897 @default.
• W156770682 hasConceptScore W156770682C2778517922 @default.
• W156770682 hasConceptScore W156770682C33923547 @default.
• W156770682 hasConceptScore W156770682C37992848 @default.
• W156770682 hasConceptScore W156770682C39432304 @default.
• W156770682 hasConceptScore W156770682C40472508 @default.
• W156770682 hasConceptScore W156770682C42360764 @default.
• W156770682 hasConceptScore W156770682C522964758 @default.
• W156770682 hasConceptScore W156770682C5961521 @default.
• W156770682 hasConceptScore W156770682C59789625 @default.
• W156770682 hasConceptScore W156770682C6648577 @default.
• W156770682 hasConceptScore W156770682C86803240 @default.
• W156770682 hasConceptScore W156770682C87717796 @default.
• W156770682 hasConceptScore W156770682C94293008 @default.
• W156770682 hasLocation W1567706821 @default.
• W156770682 hasOpenAccess W156770682 @default.
• W156770682 hasPrimaryLocation W1567706821 @default.
• W156770682 hasRelatedWork W108478801 @default.
• W156770682 hasRelatedWork W110926840 @default.
• W156770682 hasRelatedWork W123399972 @default.
• W156770682 hasRelatedWork W128063552 @default.
• W156770682 hasRelatedWork W132043016 @default.
• W156770682 hasRelatedWork W1574152244 @default.
• W156770682 hasRelatedWork W159524020 @default.
• W156770682 hasRelatedWork W19771098 @default.
• W156770682 hasRelatedWork W1994128024 @default.
• W156770682 hasRelatedWork W2000642669 @default.
• W156770682 hasRelatedWork W2011514786 @default.
• W156770682 hasRelatedWork W2032976357 @default.
• W156770682 hasRelatedWork W2052654543 @default.
• W156770682 hasRelatedWork W2081074034 @default.
• W156770682 hasRelatedWork W2218077142 @default.
• W156770682 hasRelatedWork W2626829891 @default.

• next