Utilization and Supplementation of Phytoextraction Potential of Some Terrestrial Plants in Metal-Contaminated Soils

2014 ◽  
pp. 177-200 ◽  
Author(s):  
Mayank Varun ◽  
Rohan D’Souza ◽  
Paulo J. C. Favas ◽  
João Pratas ◽  
Manoj S. Paul
2017 ◽  
pp. 157-181 ◽  
Author(s):  
Bui Thi Kim Anh ◽  
Ngyuen Thi Hoang Ha ◽  
Luu Thai Danh ◽  
Vo Van Minh ◽  
Dang Dinh Kim

2021 ◽  
Vol 25 (9) ◽  
pp. 62-67
Author(s):  
S.A. Buzmakov ◽  
D.N. Andreev ◽  
A.V. Nazarov ◽  
E.A. Dzyuba ◽  
I.E. Shestakov ◽  
...  

Indicators of the permissible content of oil and products of its transformation for podzols of illuvial-ferruginous, sod-podzolic, peat boggy raised soils of the Perm territory are presented. The sampling of the selected soil types was carried out, with which experiments on phytotesting, biotesting of the quality of water extracts with differentiated oil pollution were carried out. The assessment of chronic phytotoxicity was carried out according to the reaction of three species of terrestrial plants: spring wheat, pea sowing, and hybrid spruce. The water extract of contaminated soils was tested on chlorella and daphnia. As a result, quantitative indicators of the permissible concentration of hydrocarbons in soils after reclamation for agricultural and forestry lands were obtained.


2009 ◽  
Vol 6 (2) ◽  
pp. 106 ◽  
Author(s):  
Martin Tschan ◽  
Brett H. Robinson ◽  
Rainer Schulin

Environmental context. Soil contamination by antimony (Sb) has become an environmental problem of much concern in recent years, because increasing mining and industrial use has led to widespread soil contamination by this biologically unessential, but potentially carcinogenic element. We reviewed the available literature and found that Sb is generally taken up by terrestrial plants in proportion to the concentration of soluble Sb in soil over a concentration range covering five or more orders of magnitude, a finding that is relevant in particular for the assessment of environmental and health risks arising from Sb-contaminated soils. But very little is known about the mechanisms of Sb uptake by plants. Abstract. Soil contamination by antimony (Sb) due to human activities has considerably increased in the recent past. We reviewed the available literature on Sb uptake by plants and toxicity risks arising from soil contamination by Sb and found that Sb is generally taken up by terrestrial plants in proportion to the concentration of soluble Sb in soil over a concentration range covering five or more orders of magnitude. However, very little is known about the mechanisms of Sb uptake by plants. Also the deposition of resuspended soil particles on the surfaces of aerial plant surfaces can result in high plant Sb concentration in the vicinity of Sb-contaminated sites. Although soil pollution by Sb may be rarely so severe as to cause toxicity problems to humans or animals consuming plants or food derived from plants grown on Sb-contaminated sites, such risks may arise under worst-case conditions.


2011 ◽  
Vol 49 (No. 12) ◽  
pp. 542-547 ◽  
Author(s):  
M. Vysloužilová ◽  
P. Tlustoš ◽  
J. Száková

The Cd and Zn accumulation and phytoextraction potential of seven willow clones was investigated in a pot experiment for two vegetation periods. Heavily polluted Fluvisol-Litavka, moderately contaminated Cambisol-Pribram, and unpolluted control Chernozem-Suchdol were used. Significant differences were found in Cd and Zn accumulation between the willow clones. Cd and Zn were transferred from roots to aboveground tissues and all tested clones confirmed higher Cd and Zn accumulation in leaves than in twigs. Cd and Zn amounts removed by willow leaves were the highest from the most polluted soil (up to 83% Cd and 71% Zn of total removal). Therefore the harvest of leaves is necessary if willows are planted for heavy metal phytoextraction. Although the extremely high Zn contamination of Fluvisol-Litavka significantly reduced biomass production, willows planted in this soil showed the highest Zn removal because of extremely high Zn accumulation (max. 5061 ppm in leaves). Clones planted in moderately contaminated soil achieved the highest Cd removal. Clones showed different abilities to remove Cd and Zn, which was dependent on soil type and contamination level. Remediation factors were determined less than 1% for Zn in the heavily polluted soil and also unsatisfactory for Cd. However, it was shown that willows were suitable phytoextractors of moderately contaminated soil. About 20% of Cd and 4% of Zn were removed by harvested biomass from the total content of soil after two vegetation periods.


2013 ◽  
Vol 62 (2) ◽  
pp. 373-386 ◽  
Author(s):  
György Czira ◽  
László Simon ◽  
György Vincze ◽  
József Koncz ◽  
Gyula Lakatos

Magyarországon a robbanóanyaggal és lőszerszármazékokkal szennyezett területek kármentesítése környezetvédelmi és nemzetgazdasági érdek. Egy hazai lőtérről, illetve lőszer-megsemmisítő telepről vett talajban 900 mg·kg−1 ólom- és 133 mg·kg−1 rézszennyeződést mértünk. A fitoextrakció célja, hogy a növényi szervekbe helyezzük át a nehézfémeket, lecsökkentve ezzel a mobilis, toxikus elemkészletet a szennyezett talajokban. Megvizsgáltuk, hogy egy lőszerszármazékokkal szennyezett talajba, illetve ólommal mesterségesen elszennyezett talajba kijuttatott kelátképzőszerekkel (EDTA, EGTA, citromsav) indukálható-e, megnövelhető-e a növényi szervek Pb- és Cu-akkumulációja?Tenyészedény-kísérletünkben kukoricát neveltünk a fenti ólommal és rézzel elszennyezett lőtéri talajon, illetve a közelben gyűjtött szennyezetlen talajt mesterségesen szennyeztük el 100 mg·kg-1 ólommal. Míg a kontroll (kelátképzővel nem kezelt) szennyezett talajon fejlődő kukorica gyökerében 554 μg·g−1 ólom volt mérhető, addig az EDTA hatására a gyökerekben 4611 μg·g−1-ra (több mint nyolcszorosára), a hajtásokban pedig 158-ról 302 μg·g−1-ra (91%-kal) nőtt az ólomkoncentráció. Mindkét változás statisztikailag szignifikánsnak bizonyult. Az EGTA a Cufelvételt serkentette; a kontrollkultúrák gyökerében 516 μg·g−1, a kezelt kultúrákban viszont 1063 μg·g−1 értéket mértünk (ez kétszeres szignifikáns növekmény). A hajtásokban 69%-kal, 29,9-ról 50,7 μg·g−1-ra emelkedett a réztartalom, ez azonban nem bizonyult statisztikailag szignifikánsnak. A citromsav az ólom hajtásokba történő áthelyeződését nem indukálta, rézfelvétel-serkentő hatása csak a gyökerekben volt szignifikáns.Tenyészedény-kísérleteink alapján kijelenthető, hogy elsősorban az EDTA, illetve részben az EGTA a talajba kijuttatva mobilisabbá, könnyebben felvehetővé teszi az ólmot és a rezet, elősegítve ezzel e két toxikus elem növényekben történő akkumulációját. Szabadföldi körülmények között is feltételezhető, hogy a növények betakarításával a toxikus elemek egy része eltávolítható a szennyezett talajból.


Author(s):  
I.А. Degtyareva ◽  
◽  
I.А. Shaydullina ◽  
А.Ya. Davletshina ◽  
T.Yu. Motina ◽  
...  
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