Hybrid technologies for remediation of highly Pb contaminated soil: sewage sludge application and phytoremediation

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.

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Effects of applications of sewage sludge and fertilizer nitrogen on cadmium and lead contents of grass.

Netherlands Journal of Agricultural Science ◽

10.18174/njas.v31i3.16945 ◽

1983 ◽

Vol 31 (3) ◽

pp. 227-232

Author(s):

O.J. Hemkes ◽

A. Kemp ◽

L.W. van Broekhoven

Keyword(s):

Sewage Sludge ◽

Fertilizer N ◽

Fertilizer Nitrogen ◽

Late Autumn ◽

Permanent Grassland ◽

Cadmium And Lead ◽

Autumn And Winter ◽

Sludge Application

During 5 successive years, 0, 6, 12 or 18 t/ha yr metal-bearing sewage sludge on a DM basis was applied to permanent grassland. Each sludge application was combined with various N treatments. Cd content of the grass increased considerably with increasing amounts of sewage sludge and fertilizer N; Cd content was higher in young than in old grass. The latter also applied to Pb but the increase in Pb content was less and the relation between the supply of Pb and the Pb content of the grass was poor. During the late autumn and winter the increase in Pb content was striking and was probably caused by pollution from the atmosphere. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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Organic matter mineralisation in contrasting agricultural soils amended with sewage sludge .

Spanish Journal of Soil Science ◽

10.3232/sjss.2014.v4.n2.02 ◽

2014 ◽

Vol 4 ◽

Author(s):

Jose Navarro Pedreño ◽

Ignacio Gómez Lucas ◽

Jose Martín Soriano Disla

Keyword(s):

Organic Matter ◽

Single Dose ◽

Sewage Sludge ◽

Organic Carbon ◽

Soil Organic Carbon ◽

Agricultural Soils ◽

Dry Weight ◽

Soil C ◽

Multiple Sensor ◽

Sludge Application

The mineralisation of organic matter (OM) when sewage sludge was used as amendment in 70 contrasting agricultural soils from Spain was analysed. Soils received a single dose of sewage sludge (equivalent to 50t dry weight ha-1) and the O2 consumption was continuously monitored for 30 days using a multiple sensor respirometer in a laboratory experiment. The cumulative O2 consumption and rates after 8 and 30 days of incubation (O2 cum 8d, 30d and O2 rate 8d, 30d), the respiratory quotient (RQ), the maximum O2 rates over the incubation period (O2 max) and time from the beginning of the incubation when O2 max occurred (Tmax), were determined in both amended and non-amended soils. Sewage sludge application resulted in increased values for O2 max, O2 rate 8d, and O2 cum 30d. Differences were minor for Tmax, RQ 8d and O2 rate 30d. A considerable amount of the initial OM applied was mineralised during the first 8 days. Organic matter decomposition (as expressed by O2 cum 30d) was favoured in soils with high values of pH, carbonates, soil organic carbon and low values of amorphous Mn. Soils with these characteristics may potentially lose soil C after sewage sludge application.

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