Impact of industrial phosphate waste discharge on the marine environment in the Gulf of Gabes (Tunisia)

PloS One
Akram El KatebSilvia Spezzaferri

Abstract

The marine environment in the Gulf of Gabes (southern Tunisia) is severely impacted by phosphate industries. Nowadays, three localities, Sfax, Skhira and Gabes produce phosphoric acid along the coasts of this Gulf and generate a large amount of phosphogypsum as a waste product. The Gabes phosphate industry is the major cause of pollution in the Gulf because most of the waste is directly discharged into the sea without preliminary treatment. This study investigates the marine environment in the proximity of the phosphate industries of Gabes and the coastal marine environment on the eastern coast of Djerba, without phosphate industry. This site can be considered as "pristine" and enables a direct comparison between polluted and "clean" adjacent areas. Phosphorous, by sequential extractions (SEDEX), Rock-Eval, C, H, N elemental analysis, and stable carbon isotope composition of sedimentary organic matter, X-ray diffraction (qualitative and quantitative analysis) were measured on sediments. Temperature, pH and dissolved oxygen were measured on the water close to the sea floor of each station to estimate environmental conditions. These analyses are coupled with video surveys of the sea floor. This study reveals clear differentiation...Continue Reading

References

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Citations

Mar 27, 2019·Environmental Science and Pollution Research International·Lobna BoudayaLassad Neifar
Nov 25, 2020·Marine Pollution Bulletin·Jean-Claude DauvinLassad Neifar
Oct 28, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Hayfa RajhiSaifeddine Turki
Aug 6, 2021·ChemPlusChem·Lokesh K KumawatRobert B P Elmes

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Methods Mentioned

BETA
X-ray

Software Mentioned

Eval
Rock
Ocean Data View

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