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Use of a multi-layer column device for study on leachability of nitrate in sludge-amended soils
- Source :
- Chemosphere. 52(9)
- Publication Year :
- 2003
-
Abstract
- This paper described a multi-layer column device constructed with six cylindrical polythene tubes with installation of Rhizon soil moisture samplers (Rhizon SMS). The feasibility of using the column device to collect soil solution and percolate and to monitor leachability of nitrate in two sludge-amended soils was evaluated under glasshouse conditions. The soil moisture sampler in the device was demonstrated to be a non-destructive, simultaneous, sequential, convenient and rapid sampling tool for multiple-site porewater extraction. The device provided an in situ monitoring technique for leachability of nitrate in a soil profile following application of the anaerobically digested sewage sludge. The monitored results showed that surface soil amendment of the sewage sludge increased markedly the concentration of nitrate in the soil solutions at depths of 10-30 cm in a neutral paddy soil and at 30-50 cm in an acid red paddy soil. This amendment also largely increased nitrate in the percolates of the acid red soil. The movement and distribution patterns of nitrate in the profile were related to soil types, profile depths and experimental periods. Land application of sewage sludge may pose a risk in groundwater contamination of nitrate.
- Subjects :
- Environmental Engineering
Nitrates
Soil test
Sewage
Health, Toxicology and Mutagenesis
Public Health, Environmental and Occupational Health
Environmental engineering
Soil classification
General Medicine
General Chemistry
Hydrogen-Ion Concentration
Pollution
Soil contamination
Kinetics
Soil
Solubility
Soil water
Environmental Chemistry
Soil horizon
Environmental science
Soil Pollutants
Leaching (agriculture)
Red soil
Sludge
Environmental Monitoring
Subjects
Details
- ISSN :
- 00456535
- Volume :
- 52
- Issue :
- 9
- Database :
- OpenAIRE
- Journal :
- Chemosphere
- Accession number :
- edsair.doi.dedup.....42b16b8876a2a8fe56cac9b48d630bb6