Organic matter increases jarosite dissolution in acid sulfate soils under inundation conditions

Chu, Chengxing and Lin, Chuxia and Wu, Yonggui and Lu, Wenzhou and Long, Jie (2006) Organic matter increases jarosite dissolution in acid sulfate soils under inundation conditions. Soil Research, 44 (1). pp. 11-16. ISSN 0004-9573

Abstract

A column experiment was conducted to examine the effects of added organic matter and thickness of surface water on the stability of jarosite in a coastal acid sulfate soil. The results show that dissolution of jarosite was negligible if no organic matter was added onto the soil. However, where organic matter was added onto the soils, the acidity and the concentrations of iron and sulfate in the leachate of the soil increased following water inundation, indicating the decomposition of jarosite in such conditions. Probably, the organic matter content of the soil was originally too low to enable the creation of reducing conditions that could sufficiently cause the breakdown of jarosite contained in the soil. Under the experimental conditions, the amount of added organic matter played a more important role than the thickness of the overlying water in the dissolution of jarosite.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to published version due to publisher copyright policy. Note variation in title of journal (also known as Australian Journal of Soil Research).
Depositing User: epEditor USQ
Faculty / Department / School: Current - USQ Other
Date Deposited: 01 Sep 2011 23:07
Last Modified: 03 Jul 2013 00:43
Uncontrolled Keywords: jarosite; acid sulfate soil; inundation; organic matter; acidity
Fields of Research (FOR2008): 05 Environmental Sciences > 0503 Soil Sciences > 050304 Soil Chemistry (excl. Carbon Sequestration Science)
09 Engineering > 0907 Environmental Engineering > 090703 Environmental Technologies
05 Environmental Sciences > 0503 Soil Sciences > 050302 Land Capability and Soil Degradation
Socio-Economic Objective (SEO2008): D Environment > 96 Environment > 9614 Soils > 961401 Coastal and Estuarine Soils
Identification Number or DOI: doi: 10.1071/SR05096
URI: http://eprints.usq.edu.au/id/eprint/19418

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