Abstract: A system for soil, groundwater, or surface water remediation, comprises a water supply including a first fluid stream in fluid communication with a first injection point, and a second fluid stream in fluid communication with a second injection point. A first surfactant pump can be adapted to inject a surfactant into the first fluid stream, and a second surfactant pump can be adapted to inject a surfactant into the second fluid stream. A first oxidant pump can be adapted to inject an oxidant into the first fluid stream, and a second oxidant pump can be adapted to inject an oxidant into the second fluid stream.

Abstract: The present invention relates to methods of making and using and compositions of metal nanoparticles formed by green chemistry synthetic techniques. For example, the present invention relates to metal nanoparticles formed with solutions of plant extracts and use of these metal nanoparticles in removing contaminants from soil and groundwater and other contaminated sites. In some embodiments, the invention comprises methods of making and using compositions of metal nanoparticles formed using green chemistry techniques.

Abstract: Methods and compositions for removing contaminants from soil and groundwater by extracting the contaminants and assisting the extraction by provision of an oxidant introduced prior to or simultaneously with a surfactant into the subsurface. Extractable contaminant can be extracted from the subsurface. The amount and/or distribution of contaminant in the subsurface can be characterized. The extracting of contaminant and the introducing of oxidant and surfactant can be coordinated to reduce contaminant to a target amount. A portion of the contaminant can be oxidizable.

Abstract: A method for in-situ reduction of contaminants in soil.

Abstract: A method for removing volatile organic compounds from a contaminated gas stream includes contacting the contaminated gas stream with a nonvolatile organic liquid absorbent under conditions effective to allow absorption of the volatile organic compound from the gas stream into the absorbent and separation of the absorbed volatile organic compound from the absorbent to provide recycled absorbent and a reclaimed volatile organic compound. An apparatus for removing volatile organic compounds from a contaminated air stream includes means for contacting the contaminated air stream with an absorbent to allow absorption of the volatile organic compound by the absorbent and means for separating the absorbed volatile organic compound from the absorbent.

Abstract: 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.