نتایج جستجو برای: washing soil
تعداد نتایج: 192957 فیلتر نتایج به سال:
High levels of fluorine in soil may pose health risks and require remediation. In this study, the feasibility using a practical chemical washing method for removal from an enriched was evaluated. The procedures were optimized through experimental analyses various solutions conditions (i.e., solution concentration, solid–liquid ratio, agitation speed, reaction time). Additionally, effects techni...
The risk of Pb contaminated soil after treatment with different remediation techniques was assessed. Soil vitrification (microwaves) reduced Pb orally available from the stomach and intestinal phase measured by a physiologically based extraction test. Solidification of Pb (Slovakite) did not reduce the concentration of orally available Pb and increased the Pb uptake by Thlaspi goesingens for 2-...
The assessment of remediation on metal-polluted soils is usually focused total and/or bioavailable metal content. However, these chemical variables do not provide direct information about reductions in heavy metals pressure soil microorganisms. We propose the use bacterial communities to evaluate efficiency three techniques: crushed mussel shell (CMS) and pine bark (PB) as amendments EDTA-washi...
Polycyclic aromatic hydrocarbons (PAHs), abundant in mixed contaminant sites, often coexist with heavy metals. The fate and remediation of PAHs depend heavily on the sorption and desorption behavior of these contaminants. The sorption behavior can in turn be highly affected by certain soil components and properties, such as soil organic matter (SOM) and the presence of heavy metals. Through rev...
Soil permeability and soil salinity are considered the most important elements affecting agriculture in arid areas. To analyze and visualize solute transport and soil salinity distribution mechanisms, dye tracer and an electromagnetic device (W.E.T Probe) were used. The purpose of this study is to investigate the effect of separate clayey patches (spots) exist in loamy sand soil on both of soil...
Hands can be a vector for transmitting pathogenic microorganisms to foodstuffs and drinks, and to the mouths of susceptible hosts. Hand washing is the primary barrier to prevent transmission of enteric pathogens via cross-contamination from infected persons. Conventional hand washing involves the use of water, soap, and friction to remove dirt and microorganisms. The availability of hand saniti...
The discharge of large amounts oily sludge heat treatment residues constitutes a severe threat to the environment. However, little is known about toxicity these heat-treated residues. Current research has mainly focused on toxic effects single heavy metals or hydrocarbons plants, whereas phytotoxic hydrocarbon–metal mixtures have remained largely unexplored. In this study, pot experiments were ...
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