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Potential of four forage grasses in remediation of Cd and Zn contaminated soils.
Zhang, Xingfeng; Xia, Hanping; Li, Zhian; Zhuang, Ping; Gao, Bo.
Afiliação
  • Zhang X; Institute of Ecology, South China Botanical Garden, The Chinese Academy of Sciences, Guangzhou 510650, China.
Bioresour Technol ; 101(6): 2063-6, 2010 Mar.
Article em En | MEDLINE | ID: mdl-20005700
ABSTRACT
A pot experiment was conducted in a greenhouse to evaluate the phytoremediation abilities of four forage grasses with respect to soil Cd and Zn pollution. High Cd pollution significantly increased the biomass of Pennisetum americanum (L.) LeekexPennisetum purpureum Schumach, showed no effect on Silphium perfoliatum Linn and significantly decreased biomass of Paspalum atratum cv. Reyan No. 11 and Stylosanthes guianensis cv. Reyan II. High Zn pollution significantly decreased biomass of all grasses. Shoot Cd extraction amounts were 624, 179, 21 and 15mug/plant for P. americanumxP. purpureum, P. atratum, S. guianensis and S. perfoliatum respectively at soil Cd concentration of 8mg/kg. The shoot Zn extraction amount for P. americanumxP. purpureum was 8189mug/plant while the other three grasses were severely intoxicated at the soil Zn concentration of 600mg/kg. P. americanumxP. purpureum and P. atratum could be useful for phytoextraction of either or both Cd and Zn pollution; S. perfoliatum could be regarded as a candidate species for phytostabilization of Cd contamination; while S. guianensis had no remediation capability.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Solo / Poluentes do Solo / Zinco / Biodegradação Ambiental / Cádmio / Poaceae Idioma: En Revista: Bioresour Technol Assunto da revista: ENGENHARIA BIOMEDICA Ano de publicação: 2010 Tipo de documento: Article País de afiliação: China

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Solo / Poluentes do Solo / Zinco / Biodegradação Ambiental / Cádmio / Poaceae Idioma: En Revista: Bioresour Technol Assunto da revista: ENGENHARIA BIOMEDICA Ano de publicação: 2010 Tipo de documento: Article País de afiliação: China