Search results
Results from the WOW.Com Content Network
When the nanoparticle is the oxidant or reductant, it is considered reactive. [13] The ability to inject nanoparticles to the subsurface and transport them to the contaminant source is imperative for successful treatment. Reactive nanoparticles can be injected into a well where they will then be transported down gradient to the contaminated area.
Carbon nanotubes have gained much attention for its use as wastewater and water filter. Carbon nanotube’s mechanical, electrical and chemical properties made it unique and an ideal candidate for research since 1990. Carbon nanotube combined with electrochemistry proved to be the best method for water and wastewater purification ...
As with other membrane based separations such as ultrafiltration, microfiltration and reverse osmosis, post-treatment of either permeate or retentate flow streams (depending on the application) – is a necessary stage in industrial NF separation prior to commercial distribution of the product. The choice and order of unit operations employed ...
Airborne and waterborne nanoparticles enter from building ventilation and wastewater systems. [22] Effect of nanoparticles on societal issues: As sensors become commonplace, a loss of privacy and autonomy may result from users interacting with increasingly intelligent building components. [22]
Ozone is a strong oxidizing agent widely used in the treatment of printing and dyeing wastewater, [3] and coal chemical wastewater. [4] Its solubility in water is less and stability is also poor, which will reduce the degradation capacity of ozone towards organic molecules. [ 5 ]
Nanoparticles can be engineered to catalyze, or hasten, the reaction to transform environmentally pernicious gases into harmless ones. For example, many industrial factories that produce large amounts harmful gases employ a type of nanofiber catalyst made of magnesium oxide (Mg 2 O) to purify dangerous organic substances in the smoke.
Magnetic nanobeads or nanoparticle clusters composed of FDA-approved oxide superparamagnetic nanoparticles (e.g. maghemite, magnetite) hold much potential for waste water treatment since they express excellent biocompatibility which concerning the environmental impacts of the material is an advantage compared to metallic nanoparticles.
Nanobubbles and nanoparticles are often found together in certain circumstances, [16] but they differ in that nanoparticles have different properties such as density and resonance frequency. [17] [18] The study of nanobubbles faces challenges in understanding their stability and the mechanisms behind their formation and dissolution. [19]