Enhanced accumulation of Pb in Indian mustard by soil-applied chelating agents
Article Abstract:
Soil-applied chelating agents can enhance accumulation of lead in plant tissues, thus facilitating phytoremediation of Pb and other metal-contaminated soils. Phytoremediation or the use of plants to extract contaminants from polluted soils is an emerging technology. Indian mustard or Brassica juncea is used to test the capability of plants to increase Pb desorption when grown in Pb-contaminated soil. Results showed that Pb accumulation in the shoots of B. juncea can be enhanced by applying synthetic chelates to the soil, thus accelerating biomass accumulation and metal uptake.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1997
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Rhizofiltration: the use of plants to remove heavy metals from aqueous streams
Article Abstract:
Rhizofiltration is the process which uses living and nonliving bacteria and algae to remove pollutants from natural water systems. Plants which have efficient root systems such as Brassica, sunflower and grasses are used for removing toxic heavy metals such as lead, copper, zinc, cadmium, nickel and cromium from aquatic systems. Each has a different ability to accumulate heavy metals in their roots and shoots. The mechanisms used by plants for concentrating metals in their roots are discussed. The potentials of rhizofiltration as a pollution cleanup tool is also analyzed.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
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Phytoextraction: the use of plants to remove heavy metals from soils
Article Abstract:
A study was conducted to investigate phytoextraction in Brassica species by monitoring their ability to accumulate lead in their shoots and roots. Results showed that plants grown in metal-cultivated soils exhibited strong ability to concentrate large amounts of lead in the roots and transport this heavy metal to their shoots. These suggests that plants that exhibit phytoextraction can be used as effective tools in the clean-up of contaminated sites.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
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