Mechanism of Stability and Transport of Chitosan-Stabilized Nano Zero-Valent Iron in Saturated Porous Media
نویسندگان
چکیده
منابع مشابه
Two dimensional transport characteristics of surface stabilized zero-valent iron nanoparticles in porous media.
Zero-valent iron nanoparticles (INP) were synthesized and stabilized using poly acrylic acid (PAA) to yield stabilized INP (S-INP). A two-dimensional physical model was used to study the fate and transport of the INP and S-INP in porous media under saturated, steady-state flow conditions. Transport data for a nonreactive tracer, INP, and S-INP were collected under similar flow conditions. The r...
متن کاملTransport of acridine in saturated porous media.
The effects of the aqueous solution pH, temperature, initial solute concentration and non-equilibrium processes on the transport of acridine in saturated porous media (silica) were investigated in a series of continuous-flow column experiments. The enthalpy of the adsorption reaction was more exothermic when the solution pH was above acridine's pKa (5.6) than when it was below. The extent of ad...
متن کاملEffect of kaolinite, silica fines and pH on transport of polymer-modified zero valent iron nano-particles in heterogeneous porous media.
Polymer coatings on nano-sized remediation agents and subsurface heterogeneity will affect their transport, likely in a pH-dependent manner. The effect of pH on the aggregation of polymer-coated nanoscale zerovalent iron (nZVI) and its deposition onto sand and clay (kaolinite) surfaces was studied. nZVI coatings included a high molecular weight (90 kg/mol) strong polyanion, poly(methacrylic aci...
متن کاملDirect current assisted transport and transformation of zero-valent nanoiron in porous media
Helena I. Gomes1,2*, Celia Dias-Ferreira3, Alexandra B. Ribeiro2 and Sibel Pamukcu1 1Department of Civil and Environmental Engineering, Fritz Engineering Laboratory, 13 E. Packer Avenue, Lehigh University, Bethlehem, PA 18015-4729, USA 2CENSE, Departamento de Ciências e Engenharia do Ambiente, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal 3CERNAS, ...
متن کاملTransport Characteristics of Green-Tea Nano-scale Zero Valent Iron as a Function of Soil Mineralogy
The transport characteristics of iron nanoparticles prepared with a green tea, polyphenol-rich solution, were investigated for two granular media, pure silica sand and sand coated with aluminium hydroxide. The GT-nZVI injection caused a sharp decrease in the effluent pH and increase in the redox potential, which is attributed to the presence of free Fe and polyphenols in the suspension, respect...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Environmental Research and Public Health
سال: 2021
ISSN: 1660-4601
DOI: 10.3390/ijerph18105115