Why Would Anyone Object? An Exploration of Social Aspects of Phytoremediation Acceptability

Wolfe, Amy K.; Bjornstad, D.J.

doi:10.1080/0735-260291044304

Cited by 29 publications

(23 citation statements)

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“…Transgenic hyperaccumulator plants are also being explored for remediation of mine tailings. However, there are potential risks with the use of engineered plants in any environment including impacts on species diversity, soil ecosystems, and the food chain (Wolfenbarger 2000;Wolfe and Bjornstad 2002). The invasion potential of transgenics is also a concern, for example, exotics have colonized disturbed areas in desert environments and established as late successional species (Castellanos et al 2005).…”

Section: C100 B10mentioning

confidence: 98%

“…It has been pointed out that most of these ecological impacts can be prevented by proper management; by using sterile clones, harvesting plants prior to flowering, and selecting species that will not outcompete native plants (Pilon-Smits and Pilon 2002;Snow 2005). Finally, implementation of engineered plants for phytoextraction may be problematic due to poor public acceptance (Wolfe and Bjornstad 2002).…”

Section: C100 B10mentioning

confidence: 99%

“…In general, phytoremediation costs range from 60,000 to 300,000 $US ha -1 . However, remedial outcomes take longer than for conventional approaches which may limit the use of phytoremediation in some cases (Wolfe and Bjornstad 2002).…”

Section: Phytoremediation Of Mine Tailingsmentioning

confidence: 99%

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Phytoremediation of mine tailings in temperate and arid environments

Mendez

Maier

2007

Rev Environ Sci Biotechnol

367

183

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Phytoremediation is an emerging technology for the remediation of mine tailings, a global problem for which conventional remediation technologies are costly. There are two approaches to phytoremediation of mine tailings, phytoextraction and phytostabilization. Phytoextraction involves translocation of heavy metals from mine tailings to the plant shoot biomass followed by plant harvest, while phytostabilization focuses on establishing a vegetative cap that does not shoot accumulate metals but rather immobilizes metals within the tailings. Phytoextraction is currently limited by low rates of metal removal which is a combination of low biomass production and insufficiently high metal uptake into plant tissue. Phytostabilization is currently limited by a lack of knowledge of the minimum amendments required (e.g., compost, irrigation) to support long-term plant establishment. This review addresses both strategies within the context of two specific climate types: temperate and arid. In temperate environments, mine tailings are a source of metal leachates and acid mine drainage that contaminate nearby waterways. Mine tailings in arid regions are subject to eolian dispersion and water erosion. Examples of phytoremediation within each of these environments are discussed.Current research suggests that phytoextraction, due to high implementation costs and long time frames, will be limited to sites that have high land values and for which metal removal is required. Phytostabilization, due to lower costs and easier implementation, will be a more commonly used approach. Complete restoration of mining sites is an unlikely outcome for either approach.

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Section: C100 B10mentioning

confidence: 98%

Section: C100 B10mentioning

confidence: 99%

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Phytoremediation of mine tailings in temperate and arid environments

Mendez

Maier

2007

Rev Environ Sci Biotechnol

367

183

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“…Phytoremediation by trees can therefore reduce the pollution risks and protect soil-environmental quality. According some reports, conventional remediation procedures cost US $ 100,000-1,000,000 per hectare (Russel et al 1991); however, the cost of phytoremediation is estimated to be considerably less at only US$ 60,000-300,000 per hectare (Wolfe and Biornstad 2002).…”

Section: Background Aim and Scopementioning

confidence: 99%

Study on adsorption and remediation of heavy metals by poplar and larch in contaminated soil

Wang

Jia

2010

Environ Sci Pollut Res

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“…The three species are already adapted to semiarid conditions and integrated in the semiarid Mediterranean ecosystem. This avoids one of the problems that some phytoremediation programs generate because of the introduction of non-native plant species in the ecosystem (Wolfe and Bjornstad 2002). Therefore, the studied plants present a specific solution for a certain climate, soil and geographical location that may restrict their use in phytostabilization works to the Mediterranean area.…”

Section: Bioconcentration and Accumulation Factormentioning

confidence: 98%

A Laboratory Study on Revegetation and Metal Uptake in Native Plant Species from Neutral Mine Tailings

Conesa

Schulin

Nowack

2007

Water Air Soil Pollut

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Lygeum spartum, Zygophyllum fabago and Piptatherum miliaceum are typical plant species that grow in mine tailings in semiarid Mediterranean areas. The aim of this work was to investigate metal uptake of these species growing on neutral mine tailings under controlled conditions and their response to fertilizer additions. A neutral mine tailing (pH of soil solution of 7.1-7.2) with high total metal concentrations (9,100 and 5,200 mg kg −1 Zn and Pb, respectively) from Southern Spain was used. Soluble Zn and Pb were low (0.5 and <0.1 mg l −1 , respectively) but the major cations and anions reached relatively high levels (e.g. 2,600 and 1,400 mg l −1 Cl and Na). Fertilization caused a significant increase of the plant weight for the three species and decreased metal accumulation with the exception of Cd. Roots accumulated much higher metal concentrations for the three plants than shoots, except Cd in L. spartum. Shoot concentrations for the three plants were 3-14 mg kg −1 Cd, 150-300 mg kg −1 Zn, 4-11 mg kg −1 Cu, and 1-10 mg kg −1 As, and 6-110 mg kg −1 Pb.The results indicate that neutral pH mine tailings present a suitable substrate for establishment of these native plants species and fertilizer favors this establishment. Metal accumulation in plants is relatively low despite high total soil concentrations.

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Why Would Anyone Object? An Exploration of Social Aspects of Phytoremediation Acceptability

Cited by 29 publications

References 0 publications

Phytoremediation of mine tailings in temperate and arid environments

Phytoremediation of mine tailings in temperate and arid environments

Study on adsorption and remediation of heavy metals by poplar and larch in contaminated soil

A Laboratory Study on Revegetation and Metal Uptake in Native Plant Species from Neutral Mine Tailings

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