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Column LEACHING test for waste characterisation

Data provider

Budapest University of Technology and Economics, Department of Applied Biotechnology and Food Science, Environmental Microbiology and Biotechnology Group

Organisation/Data provider's nameBudapest University of Technology and Economics, Department of Applied Biotechnology and Food Science, Environmental Microbiology and Biotechnology Group
Name of contact
Dr. Molnár Mónika, Dr. Feigl Viktória
Contact details
Telephone/fax
+36-1-4632347
Compulsory sheet
Method Hungarian nameColumn LEACHING test for waste characterisation
Method name
Hulladék jellemzése kioldási teszttel
Stage of development
developed, proven by demonstration
Contaminants
Chemical substance group|Typically treated chemical substance
  • Polycyclic aromatic hydrocarbons (PAH) and other polycyclic aromatic compounds
Chemical substance group|Typically treated chemical substance
  • Other inorganic chemical compounds
Other parameter or substance
sulfate, chloride
Chemical substance group|Typically treated chemical substance
  • Metals, semi-metals and their compounds
Feasibility of the method
Method type
measurement/analytical method
Place of application
In laboratory
Application areas of the method
Contaminant characterisationin in environmental element/phase/sample
Characterisation of the interaction between soil and pollutant
Characterisation of the effect of technological interventions
Application possiblities of the method
Detailed assessment of contaminated environment
Monitoring of contaminated environment
Postmonitoring
Environmental element/phase the method may be applied to
Unsaturated (whole) soil
Implementation conditions
Instrument/equipment needed to perform the measurement
columns, pumps for leachate transport
Other necessary equipment/tools
analytical lab FOR LEACHATE ANALYSES
Standard materials for the test
CONTAMINANT SPECIFIC STANDARDS
Reagents/materials for the test
CONTAMINANT SPECIFIC ANALYTICAL PROCEDURE
How many samples are needed
XX KG SOIL
Data processing level
data collection, recording, evaluation by software
Necessary qualification
secondary education (chemical technician, chemical worker, laboratory assistant)
Type of laboratory
general analytical laboratory
Implementation costs
Total cost/measurement
80 - 200 Euro
Innovation, main features
Brief concise description explaining the innovation

LEACHING OF CONTAMINATED SOIL/WASTE USING WATER OR ARTIFICIAL RAIN-WATER. THE LEACHATE IS COLLECTED BY PUMPING. THE LEACHATE IS ANALYSED BY A CONTAMNINANT-SPECIFIC ANALITICAL METHOD.
The best reproducibility was achieved for all investigated substances in column tests. Our investigations will establish standardized and feasible laboratory procedures as fundamental for substance specific risk assessment of ontaminated sites.

Typical (recommended) application of the method

Laboratory leaching tests may be used for source term determination as a basis for risk assessment for soil–groundwater pathways on contaminated sites.

Detailed Protocol

1000 G HOMOGENISED (OR UNDISTURBED) SOIL SAMPLE IS FILLED INTO THE COLUMN REACTOR. THE LEACHING SOLVENT FLOWS THROUGH BY CONTINUOUS OR INTERMITTENT PUMPING FROM THE TOP TO THE BOTTOM OF THE COLUMN. LEACHATE IS COLLECTED IN 50 ML VOLUME FRACTIONS, CONTINUOUSLY. DEPENDING ON THE CONTAMINANT, CHEMICAL ANALYSES OF THE LEACHATE IS PERFORMED WITH OR WITHOUT EXTRACTION OF THE CONTAMINANT FROM THE LEACHATE. ORGANIC CONTAMINANTS ARE ANLYSED AFTER ORGANIC SOLVENT EXTRACTION BY HPLC, GC OR OTHER SEPARATION METHODS AND BY FID, MS, ETC. DETECTORS.INORGANIC CONTAMINANTS ARE ANALYSED GENERALLY BY AAS, ICP-AES, ETC.

SWOT (evalaution based on scores)
Costs
3-medium
Time requirement
2-high
Workload requirement
4-low
Equipment, apparata requirement
2-high
Qualified labour
2-high
Environmental risk and workplace risks
5-very low
Environmental reality
5-excellent
Adequate accuracy
4-good
Reproducibility
4-good
Cost efficiency
3-average
Feasibility
4-good
Availability
2-weak
Well known
2-weak
SWOT (evaluation in words)
Strengths

RELATIVELY SIMPLE METHOD WITH GOOD STATISTICS, STANDARDADIZATION IS POSSIBLE.
THE APPLICATION OF SITE SPECIFIC PARAMETERS (AMOUNT AND COMPOSITION OF PRECIPITATION, ETC.) IS POSSIBLE TO ACHIVE A HIGHLY REALISTIC MODEL.

Weaknesses

THE HIGH SURFACE-VOLUME RATIO, COMPARED TO REAL SITUATIONS MAY LOWER ENVIRONMENTAL REALITY.

Possibilities

IT CAN BE USED FOR ALL OF THE CONTAMINANTS WHICH ARE LEACHABLE FROM WASTES, ROCKS, TAILINGS, SOILS, SEDIMENTS, ETC.

Threats

nOT VALID INTERPRETATION OF THE RESULTS.

Other information, references
Important findings, points of interest, remarks

During a continuous leaching, no equilibrium is existing, similar to the real environmnet. With a batch extraction, we aim an equilibrium to increase reproducubility. In case of complex systems like solid wastes and soils an equilibrium state cannot be interpreted well.

Webpage references and DEMO reports

Stefania Balzamo and Antonia Marchetti: A new standardized leaching test on stabilized wastes, Microchimica Acta, Volume 123, Numbers 1-4 / March, 1996
See also: ISO/TS 21268-4:2007 Soil quality -- Leaching procedures for subsequent chemical and ecotoxicological testing of soil and soil materials -- Part 4: Influence of pH on leaching with initial acid/base addition
BS EN 13370:2003
Characterization of waste. Analysis of eluates. Determination of Ammonium, AOX, conductivity, Hg, phenol index, TOC, easily liberatable CN^-, F^-
British-Adopted European Standard / 11-Jun-2003 / 18 pages

Publications

U. Kalbe, W. Berger, J. Eckardt and F.G. Simon: Evaluation of leaching and extraction procedures for soil and waste, Waste Management 28 (2008) 1027-1038.

Completed applications
Location of the application, country
GERMANY
Location of the application, town and/or region
BERLIN
Year of application
2007
Lessons learned

THE CONCRETE APPLICATION DREW OUR ATTANTION TO THE SITE SPECIFICITY OF LEACHING, ETC....OR THE REMEDIATION POSSIBILITY BY THE CHANGE OF THE PH,

Pictures
Adatlap tulajdonságai
Datasheet id (original)
311
Creator
Meggyes Tamas
Status
Verified
Adatlap típusaPhysico-chemical assessment methods
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