Brownfields technology primer: selecting and using phytoremediation for site cleanup

Original publisher: [Washington D.C.] : U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response, [2001] OCLC Number: ocm48882266 Subject: Brownfields -- United States. Excerpt: ... BROWNFIELDS TECHNOLOGY PRIMER: SELECTING AND USING PHYTOREMEDIATION FOR SITE CLEANUP The immobilization of a The adsorption or Phytostabilization: Rhizofiltration: contaminant through absorption and precipitation onto plant roots or the accumulation by roots, adsorption onto roots, absorption into the roots of contaminants that or precipitation within the root zone of plants. are in solution in the root zone. Appendix 2 to this document provides a brief The uptake and Phytovolatilization: explanation of the mechanisms of transpiration of a contaminant by a plant, with release of the contaminant or a modified form phytoremediation. For more technical of the contaminant to the atmosphere from information about the various processes of the plant. phytoremediation, refer to EPA's Introduction ( EPA / 600 / R-99 / 107, to Phytoremediation The breakdown of a Rhizodegradation: February 2000 ). Table 2 shows the types of contaminant in soil through microbial activity contaminants and media that can be treated that is enhanced by the presence of the root by commonly used plants. The table also zone ( synonyms: plant-assisted degradation, includes the type ( s ) of phytoremediation plant-assisted bioremediation, plant-aided in process that occur in each situation situ biodegradation, and enhanced identified. rhizosphere biodegradation ). Table 2 Types of Plants, Contaminants, and Media Type of Plant poplars hyacinth mustard ulberry cypress locust tonwood Pennycress Stonewort Sunflower Alyssum Grasses Alfalfa Hybrid Willow Water Indian M Black Type of Bald Cot Red Contaminant Medium Soil Organic������PD RD PD RD PD PD RD RD RD Sediment������PD RD PD RD PD PD RD RD RD Groundwater�����PD HC HC PD HC PD PD Soil Inorganic��������PV PE PV PS PE PE PE PE PS PS PV PV Sedime...