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Study of heavy metal accumulation and residual toxicity in soil saturated with phosphate processing wastewater
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|Authors:||Mekki, Ali; Sayadi, Sami|
|Author Affiliations:||Primary: |
Center of Biotechnology of Sfax, Laboratory of Environmental Bioprocesses, Sfax, Tunisia
|Volume Title:||Water, Air and Soil Pollution|
|Source:||Water, Air and Soil Pollution, 228(6). Publisher: Springer, Dordrecht, Netherlands. ISSN: 0049-6979|
|Note:||In English. Based on Publisher-supplied data. 48 refs.; illus., incl. 3 tables, sketch map|
|Summary:||The effects of phosphate processing wastewater (PPWW) on heavy metal accumulation in a Mediterranean soil (Tunisia, North Africa) were investigated. Moreover, the residual toxicities of PPWW-irrigated soils extracts were assessed. Results showed that heavy metal accumulation was significantly higher in PPWW-irrigated soil extracts than in control soil. The heavy metal accumulation increased over time in treated soil samples and their average values followed the following order: Iron (Fe 252.72 mg l-1) > Zinc (Zn 152.95 mg l-1) > Lead (Pb 128.35 mg l-1) > Copper (Cu 116.82 mg l-1) > Cadmium (Cd 58.03 mg l-1). The residual microtoxicity and phytotoxicity of the various treated soil samples extracts were evaluated by monitoring the bioluminescence inhibition (BI %) of Vibrio ficheri and the measurement of the germination indexes (GI %) of Lepidium sativum and Medicago sativa seeds. The results showed an important increase of residual toxicities of PPWW-treated soil extracts over time. Copyright 2017 Springer International Publishing Switzerland and The Author(s)|
|Subjects:||Alkali metals; Alkaline earth metals; Cadmium; Calcium; Concentration; Copper; Granulometry; Heavy metals; Industrial waste; Iron; Lead; Metals; Mine waste; Phosphates; Phosphorus; Pollutants; Pollution; Potassium; Saturation; Sodium; Soils; Toxicity; Waste disposal; Waste water; Water treatment; Zinc; Africa; Mediterranean region; North Africa; Tunisia; Gafsa Tunisia; Sfax Tunisia|
|Coordinates:||N342000 N343500 E0085000 E0083000|
|Copyright Information:||GeoRef, Copyright 2021 American Geosciences Institute. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany|
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