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Linking phytoremediated pollutant removal to biomass economic opportunities
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DOI：10.1016/j.biombioe.2004.08.015.png)
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Abstract
En 中文
Phytoremediation (phyto) strategies employ trees, shrubs, and/or grasses for treating contaminated air. soil. or water, These strategies include buffers, vegetation filters, in situ phytoremediation plantings. and percolation controlling vegetative caps. The design parameter. that separates phytoremediation from landscaping is purposefully placing and growing a root-zone reactor volume with predictable pollutant removal performance. This phyto reactor integrates with other engineered systems to cover landfills, treat petrochemical spills in soils. intercept a soluble subsurface plume, and capture non-point surface sediment entrained in urban or field runoff. There are many potential economic opportunities for biomass associated with phytoremediation. including bioenergy and traditional industrial products such as solid wood products and reconstituted products (i.e., paper, chip board, laminated beams, extruded trim). More intangibly, phyto creates environmental benefits such as soil erosion control, carbon sequestration. and wildlife habitat. Phyto also creates socio-economic benefits by diversify regional manufacturing into new products that employs local labor, thus building value-added industry. Alternative crops develop a greater diversity of products from the farmland, making the regional economy less exposed to global commodity crop price fluctuations. Thus, a strategic phyto treatment of non-point agricultural runoff would help diversify land use from annually tilled crops (corn, soybeans, wheat) into perennial, untilled tree crops. A landscape rebuilt using phyto would create diversity represented in business potential, healthier air and water, wildlife habitat. and aesthetics. Moreover, phyto provides local and current pollutant treatment. Such timely treatment of pollutants that would otherwise move to our downstream, or downwind neighbors is key to the environmental justice concept. We present four case study summaries to illustrate installed commercial applications of phytoremediation. (C) 2004 Published by Elsevier Ltd.
Keywords:
phytoremediation
poplar
willow
streamside buffers
wastewater
vegetation filter
vegetative cap
environmental justice
landfill
lagoon
brownfields
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