scholarly journals THE INTENSITY OF THE HEAVY METALS BY TOPINAMBUR IN THE CONDITIONS OF THE OIL-POLLUTED AREAS

2021 ◽  
Vol 52 (6) ◽  
pp. 1334-1345
Author(s):  
V. I. Lopushniak ◽  
H. M. Hrytsuliak

This study was aimed to investigate  the ability of Jerusalem artichokes (Helianthus tuberous L.) to absorb heavy metals in an oil-contaminated ecosystem.  The research was carried out in a  territory of the oil and gas pipeline  at the village of  Bytkiv of Nadvirna district.  Jerusalem artichokes were used for this study and planted on an area of 25 m2.  The area of the experimental field in the village of  Maidan of Tysmenytsia district (control option № 1).  A total of eight treatments of the experiment with different rates of sewage sludge.  It is established that the concentration of heavy metals in oil-contaminated soil and Jerusalem artichoke plants increases with increasing the amount of fertilizers in the soil. The maximum content of metals in the tested soils, green mass and Jerusalem artichoke roots was observed  mainly in the variant of sewage sludge application at the rate of 40 t/ha and fertilizer N10P14K58.The green mass and roots of Jerusalem artichoke exhibited the highest content  of heavy metals absorption the transition coefficients of metals in the system "roots - green mass" increase in the following : Pb → Co → Ni → Cd.  The coefficients of biological absorption of metals by Jerusalem artichoke increase in a number of elements: Co  → Ni → Ld → Ca. Where as  The coefficients of biological accumulation of heavy metals with Jerusalem artichoke increase in a number of elements following series : L → Co → Ni → Ca. It is recommended to use Jerusalem artichoke as a phytoremediator of man-made areas.

Author(s):  
N Schiptsova ◽  
G Larionov ◽  
O Vasilyev ◽  
N Fadeeva ◽  
M Terentyeva

2014 ◽  
Vol 878 ◽  
pp. 647-656 ◽  
Author(s):  
Liang Dai ◽  
Biao Lin Peng ◽  
Bi Gui Wei ◽  
Gui Ma

The application of sewage sludge on agricultural soils is a promising technical solution. Pot experiments were performed to study the effect of sewage sludge application on growth, physiology and accumulation of heavy metals in three kinds of wheat. The experimental results showed soil pH decreased significantly with the increase of the application of sewage sludge. The contents of Cu, Zn and Pb in the mixed soil did not exceed the Environmental quality standards for soils in China for Grade II (GB-1518-1995).Wheat obtained good growth activities after the application of sewage sludge, however, high land application of sewage sludge (the ratio of sludge in the mixed soil of dry weight was 20% and 25%) inhibited seed emergence and root length. The content of total chlorophyll in wheat increased with the increase of sewage sludge application first and reached a maximum, and then decreased with a further increase of sewage sludge. Compared with the control, the a/b value in chlorophyll showed trace change. The content of proline in wheat increased with the increase of sewage sludge in low doses of sewage sludge (5%, 10% and 15%), while there was no significant increase in the content in high land application of sewage sludge. The physiological metabolism of wheat will exhibit abnormality as the stress of pollutants from sludge exceeded the tolerance of wheat. The content of three kinds of heavy metals in wheat grain increased obviously with sludge application increasing, indicating an increasing trend, and had the phenomenon of exceeded the safety qualification of non-environmental pollution food in china at high doses of sewage sludge. Taking account of the effects of sewage sludge application on growth,physiology and accumulation of heavy metals in wheat, the doses of sludge in the mixed soil of dry weight should be lower than 15%.


2006 ◽  
Vol 49 (3) ◽  
pp. 515-526 ◽  
Author(s):  
Ana Tereza Jordão Pigozzo ◽  
Ervim Lenzi ◽  
Jorge de Luca Junior ◽  
Carlos Alberto Scapim ◽  
Antonio Carlos Saraiva da Costa

Agricultural recycling of sewage sludge has been a source of accumulation of heavy metals in the environment which may reach toxic levels and cause serious damage to the biota. Field experiments were undertaken for two agricultural years (2000 and 2002) and effects of two sewage sludge applications were evaluated through the extraction of (essential and non-essential) transition metals by diethylenetriaminepentaacetic acid (DTPA) extractor in a medium texture dystrophic Dark Red Latosol. Cd, Ni, Co, Pb and Cr were not detected. Application of sewage sludge initially caused a slight pH rise in the soil; later pH lowered and kept itself close to the starting level. It could be concluded that through consecutive sludge application, extractable rates of Fe and Mn in soil samples gradually increased during the two agricultural years in proportion to sewage sludge doses and sampling period. In fact, they were higher than rates of control. Due to low concentrations of soil samples, extractor had a restricted capacity for evaluation of its phytoavailability.


2013 ◽  
Vol 838-841 ◽  
pp. 2694-2700
Author(s):  
Liang Dai ◽  
Ya Mei Gao ◽  
Jun Ping Zhang

Through pot experiments,the effects of various sludge loadings (0,40,80,120,200,280 t·ha-1) on growth of maize and sewage sludge application on contents of heavy metals in the soil were studied using sewage sludge from An-ning Plant of Wastewater Treatment of Lanzhou City. The results showed land application of sewage sludge increased significantly the contents of PbCuZn in the soil. The contents of PbCuZn in the soil did not exceed the standard of Environmental quality standards for soils for Grade II (GB-1518-1995) in china. Maize obtained good growth activities after land application of sewage sludge,maize height and biomass were increased significantly and were better than the control. Land application of sewage sludge inhibited maize seedling emergence and maize root length,showing the effects of dose-effect relationship with sludge application increasing. Maize root length was restrained significantly by heavy metals in the soil, the effects of heavy metals in the soil on plant root system should be considered with land application of sewage sludge. The optimal land application of sewage sludge is 80-120 t·ha-1.


1991 ◽  
Vol 21 (6) ◽  
pp. 902-909 ◽  
Author(s):  
A. J. Moffat ◽  
R. W. Matthews ◽  
J. E. Hall

An experiment to examine the use of sewage sludge as a fertiliser for pole-stage Corsican pine (Pinusnigra var. maritima (Ait.) Melville) is described. Dominant and codominant trees responded markedly to additions of sludge at rates of 200 and 400 m3•ha−1, increasing sawlog volume by over 50% in treated plots. Foliar analyses suggest that the trees have responded to phosphorus in the sludge. The greatest impact of sludge on the soil occurred in the litter layer; concentrations of nitrogen, phosphorus, calcium, zinc, copper, cadmium, and lead were all greater compared with concentrations of untreated controls. Nevertheless, at rates of sludge application appropriate to fertilising (200 m3•ha−1), additions of heavy metals are considered small and are unlikely to cause adverse environmental effects.


2012 ◽  
Vol 12 (4) ◽  
pp. 531-541 ◽  
Author(s):  
Longhua Wu ◽  
Miaomiao Cheng ◽  
Zhu Li ◽  
Jing Ren ◽  
Libo Shen ◽  
...  

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