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Investigating sulfate sorption and desorption of acid forest soils with special consideration of soil structure

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Alewell, Christine:
Investigating sulfate sorption and desorption of acid forest soils with special consideration of soil structure.
In: Zeitschrift für Pflanzenernährung und Bodenkunde. Bd. 161 (1998) Heft 1 . - S. 73-80.
ISSN 0044-3263
DOI: https://doi.org/10.1002/jpln.1998.3581610112

Abstract

When investigating the reversibility of soil and water acidification due to a reduction of SO42- deposition, the size and stability of the reversibly bound SO42- fraction in soils are important parameters. The desorption behaviour of SO42- in three acid forest soils was investigated using columns with undisturbed and disturbed (A comparison of the undisturbed and the disturbed soil samples showed that the soil structure had no effect on the chemistry of the soil solution, the S-mineralisation rates or the SO42- desorption rates. A comparison of the batch and the column method showed only minor differences in desorption rates. However, fitting the measured desorption rates to a modified Langmuir equation showed a more distinct difference between both methods. It was concluded that the batch method was more suitable to establish SO42- desorption isotherms. When investigating SO42- dynamics of soils, the heterogeneity of the soils has to be considered because the spatial variability of isotherm parameters was found to be greater than differences between the investigated methods. Furthermore, SO42- sorption showed a distinct hysteresis. While most of the sorbed SO42- was desorbed at concentrations 42-.l-1, a sorption of SO42- was observed only at concentrations > 20 - 30 mg SO42-.l-1

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Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Zusätzliche Informationen: BAYCEER7177
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Lehrstuhl Bodenökologie
Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik
Eingestellt am: 22 Okt 2015 07:29
Letzte Änderung: 22 Okt 2015 07:29
URI: https://eref.uni-bayreuth.de/id/eprint/20687