Wyniki wyszukiwania

1

Investigation of heavy metals leaching from industrial wastewater sludge

100%

Swierk K., Bielicka A., Bojanowska I., Mackiewicz Z.

Polish Journal of Environmental Studies

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2007

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tom 16

|

nr 3

447-451

Galvanic sewage sludge from electroplating plant was examined for leaching of heavy metals using various extracting solutions. The investigated parameters that influence heavy metals leaching were: contact time, type and concentration of leaching agents and form of sludge. The results of investigations show that the amounts of heavy metals (copper, nickel, chromium) released from industrial sludge using various leaching agents were from 0.07% to ~99% of their total contents. The form of sludge (air – dry or mineral residue) has a significant influence on quantities of metals leached.

2

Bacterial leaching of copper from alkaline and neutral postflotation wastes with the use of brown coal

100%

Ostrowski M., Sklodowska A., Kunicki-Goldfinger W.

Acta Microbiologica Polonica

|

1990

|

tom 39

|

nr 1-2

3

Leaching of metal ions in mine water from solid mine wastes

100%

Baranowski R., Kot B.

Polish Journal of Environmental Studies

|

1996

|

tom 05

|

nr 3

This paper presents the results of leaching of Co, Cd, Cu, Mn, Ni and Zn ions from solid wastes in mine waters of various salinity. Determinations of the content of examined elements in mine waters and in solutions from leaching of solid mine wastes were carried out by atomic absorption spectroscopy, after preliminary extraction of elements in the form of pyrrolidinedithiocarbamates. To obtain complete characteristic of examined mine waters and solutions from leaching, standard analyses, commonly used for water and wastes, were done.

4

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Leaching kinetics of atrazine and inorganic chemicals in tilled and orchard soils

86%

Szajdak L. W., Lipiec J., Siczek A., Nosalewicz A., Majewska U.

International Agrophysics

|

2014

|

tom 28

|

nr 2

The aim of this study was to verify first-order kinetic reaction rate model performance in predicting of leaching of atrazine and inorganic compounds (K+1, Fe+3, Mg+2, Mn+2, NH4 +, NO3 - and PO4 -3) from tilled and orchard silty loam soils. This model provided an excellent fit to the experimental concentration changes of the compounds vs. time data during leaching. Calculated values of the first-order reaction rate constants for the changes of all chemicals were from 3.8 to 19.0 times higher in orchard than in tilled soil. Higher first-order reaction constants for orchard than tilled soil correspond with both higher total porosity and contribution of biological pores in the former. The first order reaction constants for the leaching of chemical compounds enables prediction of the actual compound concentration and the interactions between compound and soil as affected by management system. The study demonstrates the effectiveness of simultaneous chemical and physical analyses as a tool for the understanding of leaching in variously managed soils.

5

Leaching of sulphur from light textured soils

86%

Tripolskaja L., Marcinkonis S.

Nawozy i Nawożenie

|

2004

|

tom 06

|

nr 1[18]

6

Magnetic treatment of irrigation water

86%

Rokhinson E. E., Baskin V. V.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

1996

|

tom 436

Natural water used for washing, out and irrigation presents an open nonstationary heterogeneous multicomponent system closely connected with the atmosphere. One should consider such water as a gas-liquid solution where there is a water-gas-solid inclusion equilibrium. When passing the solution through nonhomogeneous magnetic fields several irreversible hydrophysical and hydrochemical processes arise in it which significantly change the natural water properties. One of the most important effects observed in experiments is increasing the number of crystal particles of CaCO₃ which causes reducing the supersaturation of natural water with CaCO₃, shifting the carbonic acid equilibrium and increasing the CO₂ content in water. This water penetrates better through alkaline carbonate soils. The application of the magnetic treaters for leaching saline soil and irrigation treatment allows to diminish the water consumption, to decrease significantly the soil salinization, to enhance moisture supply of plants and to increase the crop yield. The method can positively influence on preservation of water resources of the planet.

7

Concentration of soil CO2 as an indicator of the decalcification rate after liming treatment

86%

Chmiel S., Halas S., Glowacki S., Sposob J., Maciejewska E., Trembaczowski A.

International Agrophysics

|

2016

|

tom 30

|

nr 2

8

The implementation of recommendations and restrictions for using nitrogen fertilizers in Estonia

86%

Loide V., Koster T., Penu P., Rebane J.

Nawozy i Nawożenie

|

2009

|

nr 37

9

Dynamics of heavy metals leaching from soils with sewage sludge addition

86%

Rosik-Dulewska C., Mikszta M.

Archiwum Ochrony Środowiska

|

2001

|

tom 27

|

nr 1

10

Origin and function of dissolved organic compounds in waters of agricultural landscape

86%

Zyczynska-Baloniak I., Ryszkowski L., Szpakowska B., Karlik B.

Polish Journal of Environmental Studies

|

1995

|

tom 04

|

nr 4

The concentrations of dissolved organic compounds (DOC) in the waters of small and large agricultural drainage basins were analyzed. It was found that the average DOC concentrations in surface water of the large agricultural drainage basin was 15.6 mg/1. Much higher DOC concentrations were noted in ground and surface waters of the small agricultural drainage basin. Groundwater under a cultivated field contained on average 22.4 mg/1 DOC, while the water of a small mid-Held pond contained 47.6 mg/1 of DOC. Dissolved humic substances (HS) constitute a prevailing fraction of DOC and amount to 86.2% of DOC in the groundwater, and 71.4% of DOC in the water of a small mid-field pond. Moreover, concentrations of Cd, Cu and Pb in the ionic form and in the bound form with HS were studied in the waters. It was observed that HS isolated from the groundwater has 4 times more complexing properties in relation to Pb and 2.5 times Cd than HS obtained from surface water.

11

Influence of adjuvants on behavior of phenmedipham in plant and soil

72%

Kucharski M., Sadowski J.

Polish Journal of Agronomy

|

2009

|

nr 01

12

Desorption of phosphate [V] ions from brown soil

72%

Bartoszewicz J., Karp E.

Journal of Elementology

|

2010

|

tom 15

|

nr 1

19-29

The objective of the study was to determine, under laboratory conditions, the rate of phosphate (V) ions leaching down brown soil horizons under the influence of redistilled water of pH 6.2. Laboratory tests were conducted to determine the effect of mineral and organic fertilization on phosphate (V) ion concentrations in brown soil horizons before and after extraction with water. The content of desorbed PO4 3– ions was determined in percolating water samples. The results indicate that the quantity of desorbed phosphate (V) ions was affected by the type and rate of fertilization as well as by the dose of the applied solvent. The highest desorption of phosphate (V) ions from the brown soil profile was reported in the treatment fertilized with manure + PK, while the lowest desorption was observed in the plot fertilized with NPK. The maximum desorption of phosphate (V) ions was noted in soil layers at the depths of 0-25 cm and 26-50 cm. In all filtrate samples, PO4 3– values significantly exceeded the minimum quantity required to initiate eutrophication. The highest content of phosphate (V) ions, at 64.8 mg PO4 3–⋅kg–1 soil, was determined in percolating water from the treatment fertilized with slurry rate II (123.8 t⋅ha–1). Percolating water samples collected in the non-fertilized (control) plot were least abundant in phosphate (V) ions (21.7 mg PO4 3–⋅kg–1 soil).

13

Comparison of the chemical composition of soil-ground waters from fields fertilized with liquid manure and mineral fertilizers

72%

Sadej W., Mazur T., Bartoszewicz J.

Acta Agrophysica

|

2002

|

tom 70

14

Changes of copper and chromium content in wood impregnated with the CCB and CB preservatives after leaching

72%

Mazela B.

Folia Forestalia Polonica. Series B - Drzewnictwo

|

2000

|

tom 31

15

Nitrogen and phosphorus leaching during the decomposition of broadleaf forest litter

72%

Bernacki Z.

Polish Journal of Soil Science

|

2003

|

tom 36

|

nr 1

The rate of broadleaf forest litter decomposition as well as leaching of nitrogen and phosphorus was estimated, on two plots situated in an about 150-year old oak-hornbeam tree stand. In both ecosystems the rate of production and decomposition of litter was approximately the same. There was evidence of the dependence of the decomposition rate on the total precipitation in the vegetative season. The determined quantity of nitrogen leached in the process of litter decomposition reached 50 100 kg per ha in wet years and about 30 kg per ha in dry years. Quantities of phosphorus leached from decomposed litter oscillate between 4 6 kg per ha in wet years and 1 3 kg per ha in dry years.

16

Leaching study on the process of solidification of radionuclide 60 Co in concrete

72%

Plecas I.

Polish Journal of Environmental Studies

|

2005

|

tom 14

|

nr 5

To assess the safety for disposal of radioactive waste-cement composition, the leaching of ⁶⁰Co from a waste composite into a surrounding fluid has been studied. Leaching tests were carried out in accordance with a method recommended by the IAEA. Determination of retardation factors, K F and coefficients of distribution, k d , using a simplified mathematical model for analyzing the migration of radionuclides, has been developed. Results presented in this paper are examples of results obtained in a 30-year mortar and concrete testing project, which will influence the design of the engineered trench system for a future central radioactive waste disposal center.

17

Research on dried apple rehydrated with water and milk

72%

Witrowa-Rajchert D., Dworski T.

Acta Agrophysica

|

2003

|

tom 02

|

nr 2[96]

18

Nitrate nitrogen leaching in different agroecosystems [in karst zone and Middle Lithuania]

72%

Rudzianskaite A., Miseviciene S.

Journal of Water and Land Development

|

2005

|

nr 09

19

Transformations and mobility of 14C-carbofuran in the soil

72%

Lewandowska A.

Journal of Plant Protection Research

|

1999

|

tom 39

|

nr 2

The transformations of ¹⁴C-ring-labeled carbofuran and leaching with water in the humus soil were investigated. The experiments were carried out under laboratory conditions using natural profile of arable layer (mini-lysimeters) and in field lysimeter. The tested compound applied on the soil surface was eluted with water in laboratory and sprinkled four-times every 2 weeks in field trial. Carbofuran was mobile in the soil with permeable water. lts residues could reach the ground water as a result of leaching with heavy rains. The both processes, disappearance of extractable residues and formation of bound ones were most intensive in the upper layers of the soil. The using of natural soil profiles (mini-lysimeters) offer an excellent experimental set up for study of crop protection chemicals behaviour in the soil.

20

Soil water, solute storage and drainage in a deeply loosened, heavy-clay soil of Southern Romania

72%

Paltineanu C.

International Agrophysics

|

2003

|

tom 17

|

nr 3

Ograniczanie wyników

Investigation of heavy metals leaching from industrial wastewater sludge

Bacterial leaching of copper from alkaline and neutral postflotation wastes with the use of brown coal

Leaching of metal ions in mine water from solid mine wastes

Leaching kinetics of atrazine and inorganic chemicals in tilled and orchard soils

Leaching of sulphur from light textured soils

Magnetic treatment of irrigation water

Concentration of soil CO2 as an indicator of the decalcification rate after liming treatment

The implementation of recommendations and restrictions for using nitrogen fertilizers in Estonia

Dynamics of heavy metals leaching from soils with sewage sludge addition

Origin and function of dissolved organic compounds in waters of agricultural landscape

Influence of adjuvants on behavior of phenmedipham in plant and soil

Desorption of phosphate [V] ions from brown soil

Comparison of the chemical composition of soil-ground waters from fields fertilized with liquid manure and mineral fertilizers

Changes of copper and chromium content in wood impregnated with the CCB and CB preservatives after leaching

Nitrogen and phosphorus leaching during the decomposition of broadleaf forest litter

Leaching study on the process of solidification of radionuclide 60 Co in concrete

Research on dried apple rehydrated with water and milk

Nitrate nitrogen leaching in different agroecosystems [in karst zone and Middle Lithuania]

Transformations and mobility of 14C-carbofuran in the soil

Soil water, solute storage and drainage in a deeply loosened, heavy-clay soil of Southern Romania