heavy metal pollution in soil and plants at bone char site
Heavy metal contamination in soils of urban highways (comparision between runoff and soil concentration
Ngày tải lên :
16/03/2014, 00:25
... Printed in the Netherlands.
HEAVY METAL CONTAMINATION IN SOILS OF URBAN HIGHWAYS 313
5. Conclusions
Heavy metal contamination in soils taken from along I-75, Cincinnati, Ohio, is very
high in ... also investigated
partitioning of metals and solids in storm water. Their results indicated that Zn, Cd,
Cu were mostly in dissolved form whereas Pb, Fe and Al were particulate-bound
in storm water.
In ... area of 15 × 20 m on I-75 in Cincinnati, during five rainfall
events in 1995. Their results showed that the event mean concentrations (EMC)
HEAVY METAL CONTAMINATION IN SOILS OF URBAN HIGHWAYS 305
Figure...
- 22
- 518
- 0
Adsorption of heavy metal inons on soils and soil constituents
Ngày tải lên :
15/03/2014, 23:09
... controlling heavy metal
adsorption and their distribution between soil and water are
soil type, metal speciation, metal concentration, soil pH,
solid: solution mass ratio, and contact time [16–20].Ingen-
eral, ... Mn
and clay contents and pH [176]. Almost all of the Co in soils
could be accounted for by that present in Mn minerals, indi-
cating that these minerals can be an important sink for Co in
soil ... of heavy metal ions on soils and soils constituents such as clay minerals, metal (hydr)oxides, and soil or-
ganic matter. Empirical and mechanistic model approaches for heavy metal adsorption and...
- 18
- 974
- 1
A meta analysis and risk assessment of heavy metal uptake in common garden vegestable
Ngày tải lên :
15/03/2014, 23:10
... electroplating, smelting, and ore
processing (ATSDR 1994). Mine tailings and drainage from mines can contain high
concentrations of zinc (Cobb et al. 2000).
The fate and transport of zinc (Zn
+2
) ... culture plants in the laboratory or conducted field
studies using plants growing in field-contaminated soil) . Sources of contamination for soils used
in these studies included mine tailings (20%), ... determine the relationship between heavy metal concentrations in the
soil and heavy metal concentrations in vegetables and 2) determine the level of risk associated
with exposure to heavy metals...
- 64
- 482
- 0
Báo cáo "The effect of Cu concentration in soil and phosphorous fertilizer on plant growth and Cu uptake by Brassia juncea L. grown on contaminated soils " doc
Ngày tải lên :
14/03/2014, 15:20
... examination of the heavy metal, i.e. Cd
and Zn on plant growth and uptake
investigated by Zhang et al., also assist to
elaborate a possible combination of phosphate
application on heavy metal ...
Therefore, plants usually have been used as
indicators of metal pollution or accumulation in
soil. Besides, plants are also used as
accumulators for soil remediation, which is
called phyto-remediation ...
increasing concentration of Cu in soil. The
accumulation of heavy metal in plant tissues of
Brassica juncea L. is reflected the concentration
in soil. The contents of Cu in plant increase...
- 5
- 590
- 1
USEPA REGION 9 TECHNICAL GUIDELINES FOR ACCURATELY DETERMINING VOLATILE ORGANIC COMPOUND (VOC) CONCENTRATIONS IN SOIL AND SOLID MATRICES potx
Ngày tải lên :
14/03/2014, 20:20
... guidelines when it is
determining VOC concentrations in soil and solid matrices. In order to help ensure
that data generated are of known and appropriate quality and accurately reflect
environmental ... testing and sampling industries and from State and Federal
agencies, who provided input to this document and its predecessor.
EPA Region 9 Technical Guidelines for Accurately Determining
Volatile ... “Closed-System Purge-
and- Trap and Extraction for Volatile Organics in Soil and Waste Samples,” and
Method 5021, “Volatile Organic Compounds in Soils and Other Solid Matrices Using
Equilibrium Headspace...
- 10
- 468
- 0
Vital Assets - Federal Investment in Research and Development at the Nation’s Universities and Colleges potx
Ngày tải lên :
15/03/2014, 22:20
... to expand our
summary presentation of information on the federal R&D funding going to higher
education institutions that was presented in Discovery and Innovation: Federal
Research and Development ... activities—particularly
growing collaboration across fields, organizations, sectors, and even nations and
suffer from inconsistent applications of definitions across reporting units.
6
Often, existing data on expenditures ... Carolina,
South Dakota, Vermont, West Virginia, and Wyoming), the Commonwealth of Puerto
Rico, and the U.S. Virgin Islands participated in NSF’s EPSCoR program. (Note that
the U.S. Virgin Islands...
- 189
- 755
- 0
Assessing the hazard of metals and inorganic metal substances in aquatic and terrestrial systems
Ngày tải lên :
16/03/2014, 11:45
... concentrations in soil, the principal ones being:
F
in
— input flux of (reactive) metal from external sources
F
weath
— weathering input
F
age
— removal by aging processes in mineral phases
F
... the kinetics of metal sulfide precipitation and dissolution are
formulated as kinetic processes. The concentrations and characteristics of the nec-
essary water column and particulate partitioning ... poisoning issues. Further,
comparison of hazard ranking using soil quality criteria/guidelines often does not
correlate with hazard ranking in a single soil with a single test, so that ranking
depends...
- 176
- 401
- 0
The World’s Worst Pollution Problems: Assessing Health Risks at Hazardous Waste Sites pptx
Ngày tải lên :
15/03/2014, 16:20
... bioremediation approach that included treating the remaining contaminated site with
vermiculture – worms – that concentrate heavy metals in their bodies and reduce the contamination in
the soil ... populations
at polluted sites can be exposed through dermal contact with contaminated soil and water, ingestion of
contaminated water, inhalation of dust and vapor and ingestion of contaminated ... earth. Mining is done through surface or open-pit mining,
underground mining or through fluid mining. Open surface mining entails digging out or blasting rocks
and creating open-pits in the earth,...
- 52
- 386
- 0
Tài liệu Báo cáo " Study on reuse of heavy metal rich sludge in ceramic pigment and construction material production " docx
Ngày tải lên :
12/02/2014, 17:20
... Construction standard when no
risks for environment (heavy metal leaching
into rain water) were found.
In further study, heavy metal leaching into
rain water with lower pH value and longer
soaking ... high
concentration of heavy metal [1-3].
Currently, heavy metal rich sludge is
mainly treated by solidification then
disposed/land filled and incineration. In
addition, some treatment methods ... Institute
of Environmental Technology.
Heavy metal rich sludge
Dehydration
(dry at room temperature and at 105
0
C-110
0
C)
Fine screening (d ≤ 0,05 mm)
Reuse
Cooling
Treating and Grinding
...
- 7
- 436
- 0
Tài liệu SWIMMING IN SEWAGE: The Growing Problem of Sewage Pollution and How the Bush Administration Is Putting Our Health and Environment at Risk ppt
Ngày tải lên :
17/02/2014, 10:20
... with swimming in sewage-contaminated marine waters.
59
The amount of human illness after exposure to marine water appears to be increasing, and
there is evidence that the rate of infection ... into our recreational and
drinking water, into groundwater, and directly onto private property, often in the form of
basement backups.
Health experts in government, academia, and the private ... 9).
222, 223
That finding indicates that the sewage
system in suburban Maryland is a large contributor to the pollution in the river, and it
contradicts the presumption that stormwater pollution...
- 83
- 543
- 0
Effect of sludge processing mode, soil texture and soil ph on metal mobility in undisturbed soil columns
Ngày tải lên :
16/03/2014, 00:07
... processing (digested dewatered, pelletized, alkaline-stabilized, composted, and incinerated), soil type and
initial soil pH on trace metal mobility was examined using undisturbed soil columns. Soils ... rapidly attain cumulative metals loading in the soil to
simulate long-term applications. This phase allowed
rapid attainment of a cumulative metals content in soil
equivalent to 28 years at the ... with
soil type and pH. In Hudson soils, dewatered sludge
had the greatest percolate concentrations, reaching
0.24 mg/l in Cycle 4 for the low pH soil, and
decreasing somewhat in Cycle 5. Pelletized...
- 20
- 489
- 0
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