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Water Treatment
Figure 4: Comparison of LCA between extraction by single-step enrichment and three successive steps(%).
II. 3. Ecotoxicity The natural origin of ODYLIFE does not imply its safety [ 11 ]. Ecotoxicological tests were conducted to study the ecotoxicity of the ODYLIFE product on the embryo-larval development of bivalves( oysters). Figure 5 represents the No Observable Effect Concentration( NOEC) and the Median Effective Concentration( EC 50
) for chemical solutions based on ODYSSEE Environnement’ s polyacrylates and competitors, as well as ODYLIFE. Figure 5 indicates that products based on polyacrylates have a NOEC and an EC 50 lower than 5.6 mg / L and 39.3 mg / L, respectively. In contrast, ODYLIFE shows no toxicity over the entire range of tested concentrations( up to 100 mg RS / L). ODYLIFE appears to be more than 20 times less impactful on the embryo-larval development of bivalves than polyacrylate-based products. Furthermore, since ODYLIFE is derived from a natural source, unmodified chemically, and nontoxic, according to REACH regulations, it is exempt from a safety data sheet. ODYSSEE Environnement
Figure 5: Ecotoxicity test on the embryo-larval development of bivalves( oysters) for products based on polyacrylate and ODYLIFE.
also aims to update current regulations on discharges to revise the parameter related to the COD threshold, especially when the product used is natural and non-concerning. In conclusion, the industrial production of ODYLIFE required the development of a specific method for characterizing the active ingredient representative of the scale inhibition efficacy. This allowed for the characterization of raw materials and the selection of plant sources rich in active molecules, optimizing both the environmental impact and the economic profitability of ODYLIFE. Similarly, industrial scaling provided an opportunity to optimize the extraction process established previously in the laboratory, making it more ecological and economical by choosing a three-step enrichment extraction. Finally, ecotoxicological tests demonstrated the safety of ODYLIFE and its exemption from Safety Data Sheets under REACH regulations.
III. Conclusion After establishing the formula of ODYLIFE in the laboratory, its industrialization required the development of a specific quantification method, based on the detection of active tracer molecules by spectrometry. The correlation between the concentration of the tracer and the inhibitory effectiveness of scale formation was verified for different selected sources. Furthermore, the evaluation of the inhibitory potential of a plant source( through quantification method) allowed for improving the quality of plant raw materials by using the sources richest in active principles( increasing from 7 % to 10 % mass of active molecules per dry residue), thereby
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