Abstract Vanadium dioxide (VO 2 ) has demonstrated highly potential for smart windows because of its thermochromic property. This study represents the development a facile but efficient method synthesis VO (M) nanoparticles by ball milling under ambient conditions, without release waste liquid or gases. The key variables related to synthesis, including time and molar ratio raw materials, have b...

Abstract In this study, we present the efficiency of remediation scenario to attenuate impact acid mine drainage (AMD) contamination in Kettara abandoned site. The study focuses on AMD groundwater Sarhlef shists aquifer. To predict evolution site under scenario, a model flow and transport was performed. Piezometric heads were measured at dry wet periods from eleven wells located downstream wast...

the increasing use of nitrogen fertilizers due to high dynamics of nitrate in the soil would be a serious threat to groundwater, and therefore, to thuman health. this study is aimed to investigate the disperdivity values of nitrate in the coarse, medium and fine sandy soils in the short travel distance of 20, 40 and 80 cm in vitro using the hydrus-1d model. for this purpose, pure potassium nitr...

Laboratory and numerical experiments were conducted to provide a quantitative steady-state analysis of the effect incremental variations water level on saltwater intrusion. The purpose was seek mathematical correlations relating both wedge toe length height along coastline boundary head difference. laboratory completed in 2D sand tank where freshwater seawater levels varied. for two bead sizes ...

[1] The mixing zone between freshwater and seawater in a coastal aquifer is an important transition region that controls regional groundwater flow dynamics and reactive transport processes. While experimental procedures have been developed to study the movement of salt wedges in aquifers, so far no one has attempted to exclusivelymap themixing zone associated with the wedge in a laboratory-scal...

Groundwater flow on St. George Island, a barrier island in the north-east Gulf of Mexico, was monitored downfield from wastewater systems using artificial tracer techniques. Sulphur hexafluoride and fluorescein dye were used to determine groundwater flow velocity, hydraulic conductivity, and dispersivity at selected sites on the island. Monthly hydraulic head measurements illustrate the aquifer...

[1] Because of transverse pore-scale dispersion, a mixing layer develops along the interface between a lighter fluid (fresh water) that flows toward a well or sink above a heavier fluid (seawater) in a steady axisymmetric configuration. The Peclet number characterizing mixing, Pe = L/aT, where L is the aquifer thickness and aT is transverse dispersivity, is generally much larger than unity. The...

ABSTRACT-Application of models for simulation of solute and pollutants transport in soil can reduce time and costs for remediation process. HYDRUS-1D model was developed to simulate the one–dimensional flow of soil water, heat, solute and viruses in variably saturated–unsaturated porous media. The objective of this investigation is to determine the solute transport parameters in disturbed soil ...