摘要:
An improved method for treating organic compounds present in soil, groundwater and other environments is disclosed. The method involves the use of a peroxygen compound and a chelated transition metal.
摘要:
Organic compounds are removed from contaminated soil, ground water and the like by treatment with a combination of a water soluble peroxygen compound, such as sodium persulfate, and a pH modifier capable of maintaining a pH greater than about 10, such as a metal hydroxide.
摘要:
An improved method and compositions for treating organic compounds present in soil, groundwater and other environments is disclosed. The method involves the use of a composition comprising a solid state, water soluble peroxygen compound and zero valent iron.
摘要:
An improved method and compositions for treating organic compounds present in soil, groundwater and other environments is disclosed. The method involves the use of a composition comprising a solid state, water soluble peroxygen compound and zero valent iron.
摘要:
A bag holder device for retaining a bag in an upright and open position for allowing an individual to fill the bag with debris. The inventive device includes a first support member and a second support member that are extendible into a ground surface. The first support member includes a pair of first legs, a pair of first arm members extending from the first legs, and a first bar member extending between the first arm members. The second support member includes a pair of second legs, a pair of second arm members extending from the second legs, and a second bar member extending between the second arm members. The first bar member and the second bar member are surrounded by a first engaging member and a second engaging member respectively for engaging a paper bag. A first board having first apertures and a second board having second apertures is included for receiving the first support member and the second support member upon hard surfaces such as concrete or asphalt.
摘要:
The invention is an apparatus for aerobically biodegrading an organic compound such as a petroleum product which is contaminating a particulate solid such as soil and a process for employing the apparatus. A preferred embodiment comprises a pit lined with an impermeable liner in which gas distributing means and contaminated soils are distributed as alternate layers and air is urged into the gas distributing means.
摘要:
A process for replacing an aromatic carbon-thallium bond with a carbon-oxygen bond. The process is particularly suitable for producing specific aromatic isomers by thallating an aromatic compound and replacing the thallium with a carboxylate group which can be further hydrolyzed if desired to form an aromatic hydroxyl compound.
摘要:
Vanadium is recovered from sulfuric acid leach liquor by oxidizing the vanadium with hydrogen peroxide in the presence of iron ions and extracting the oxidized vanadium with an amine solvent system.
摘要:
The present invention provides a method of reducing the concentration of recalcitrant organic contamination in a soil matrix. The method includes the steps of incubating the contaminated soil matrix with unacidified ozone sufficient to reduce the concentration of the recalcitant organic contamination in the soil matrix by about 10% to about 15%; and then applying unacidified ozone to the soil matrix sufficient to substantially reduce the concentration of the recalcitrant organic contamination in the soil matrix. During the incubation phase, the ozone demand of competitive, non-contaminant ozone consumers in the soil is satisfied. Additionally, during the incubation phase, ozone conditions the contaminated soil matrix to prepare the recalcitrant organic contamination for subsequent rapid and substantial destruction. When the concentration of the recalcitrant organic contamination has been reduced by from about 10% to about 15% in the soil, the incubation phase has ended such that the application of additional unacidified ozone to the soil matrix rapidly and substantially reduces the concentration of the recalcitrant organic contamination in the soil matrix.
摘要:
The present invention is a process to stimulate the biooxidation of a contaminant in a subterranean formation by introducing an aqueous solution into the formation. The concentration of the hydrogen peroxide is increased thereby acclimating the biota to higher concentrations of hydrogen peroxide. Periodically the concentration of the hydrogen peroxide is increased for a short time sufficiently to be toxic to the biota at or relatively adjacent to the site of introduction, thereby increasing the permeability of the formation at or adjacent to the site of introduction.