Possible effects of irrigation with wastewater on the clay mineralogy of some Australian clayey soils: laboratory study
Article
Article Title | Possible effects of irrigation with wastewater on the clay mineralogy of some Australian clayey soils: laboratory study |
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ERA Journal ID | 5248 |
Article Category | Article |
Authors | Marchuk, Serhiy (Author), Churchman, Jock (Author) and Rengasamy, Pichu (Author) |
Journal Title | Soil Research |
Journal Citation | 54 (7), pp. 857-868 |
Number of Pages | 12 |
Year | 2016 |
Publisher | CSIRO Publishing |
Place of Publication | Australia |
ISSN | 0004-9573 |
1446-568X | |
1838-675X | |
1838-6768 | |
Digital Object Identifier (DOI) | https://doi.org/10.1071/SR14373 |
Web Address (URL) | https://www.publish.csiro.au/sr/SR14373 |
Abstract | Potassium is common in a wide variety of wastewaters and in some wastewaters is present at several hundred to several thousand mg L–1. Potassium is taken up by expandable clays leading to its fixation and illitisation of smectitic and vermiculitic layers. Hence the addition of wastewaters to soils may lead to mineralogical changes in the soils that affect their physico-chemical properties. Winery wastewater was equilibrated with clay-rich soils from Southern Australia. X-ray diffraction patterns and chemical composition of clays extracted from untreated and treated soils were determined. In three of the four soils, shifts in peak positions occurred towards more illitic components along with increases in K and sometimes also Mg and Na contents of soil clays. Peak decomposition showed trends towards the formation of interstratifications of illite with smectite at the expense of smectite and an alteration of poorly crystallised illite into its more well-ordered forms. The results show that illitisation may occur as a result of the addition of K-rich wastewaters to clayey soils. |
Keywords | decomposition of XRD, potassium, soil clay |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 410604. Soil chemistry and soil carbon sequestration (excl. carbon sequestration science) |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Adelaide |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4zz0/possible-effects-of-irrigation-with-wastewater-on-the-clay-mineralogy-of-some-australian-clayey-soils-laboratory-study
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