Objective
Through construction activities, large quantities of polymeric organic compounds used as concrete admixtures are potentially introduced into the environment. The majority of these chemicals are xeniobiotic sulfonated compounds such as sulfonated naphthalene-formaldehyde-condensates (SNFC), sulfonated melamine-formaldehyde-condensates (SMFC) and ligninsulfonates (LS).
The proposed project aims to provide new and innovative analytical procedures for the determination of SNFC, SMFC, LS, related monomers and degradation products. As sensitive and specific analytical procedures for highly polar organic mircropollutants are still scarce, the procedures developed in the course of this project will have applications beyond the scope of the proposed study.
The newly developed analytical tools will be applied to determine the occurrence of the above compounds in different wastewater streams, in receiving waters and in drinking water. Behavior and fate of SNFC, SMFC, LS, related monomers and degradation products during wastewater treatment will be studied aiming at the identification of the relevant chemodynamic processes.
The project is organised into four interrelated work packages addressing the following areas:
(i) Development of state-of-the art trace enrichment, separation and detection techniques using solid-phase extraction, high-performance liquid chromatography (HPLC), capillary electrophoresis (CE) and HPLC/mass spectrometry.
(ii) Occurrence of SNFC, SMFC, LS, related monomers and degradation products primarily in wastewaters from different industrial and municipal sources as well as in receiving waters, concrete leachates, ground waters and drinking water.
(iii) Mass balance of SNFC, SMFC, LS, related monomers and degradation products in different wastewater treatment plants, identification of processes relevant for their environmental fate and identification of possible wastewater disinfection by-products.
(iv) Synthesis of the above results in a mass-flux and exposure analysis, leading to a basis for the assessment of environmental and human risks, identification of possible product liabilities and recommendations concerning the establishment of environmental and industrial standards.
This project will contribute to the urgently needed scientifically sound basis for the environmental impact assessment of the most important concrete admixtures which are applied worldwide in vast and steadily increasing amounts.
Keywords: concrete admixtures, naphthalene sulfonates, melamine sulfonates, ligninsulfonates, wastewater, biodegradation
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology environmental engineering water treatment processes drinking water treatment processes
- engineering and technology environmental engineering water treatment processes wastewater treatment processes
- natural sciences chemical sciences organic chemistry
- natural sciences chemical sciences electrochemistry electrophoresis
- natural sciences chemical sciences analytical chemistry mass spectrometry
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Coordinator
30123 Venezia
Italy
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