Use of LCA to evaluate the environmental benefits of substituting chromic acid anodizing (CAA)
Article dans une revue avec comité de lecture
Date
2007Journal
Journal of Cleaner ProductionAbstract
Chromic acid anodizing processes are currently being replaced in many industrial sectors because of the recognized adverse effect on the environment and health of used hexavalent chromium compounds. The environmental impacts of the existing processes must, however, be quantified in order to constitute a baseline against which the environmental performance of potential alternative options could be compared. The whole life cycle of the process should also be taken into account to ensure that the possible chosen solution for eliminating or lowering chromium (VI) emissions would not drastically damage the overall process performance in other environmental areas. In our study, we used a simplified life cycle assessment methodology that only took into account the key environmental issues of the considered industrial sector. Both the scope and the data needs were reduced by focusing only on significant flows and by using a generic database for steps other than the anodizing one. A precise literature review was carried out to evaluate bath atmospheric emissions. The results of the performed assessment confirmed that the only way to efficiently deal with hexavalent chromium compounds is to substitute the electrolyte used in the bath as the most Cr(VI) emissions are caused by other stages than the main one. Other specific issues, such as water and energy consumptions have, nevertheless, to be studied throughout the whole life cycle of the chemical substitute to monitor performance against CAA.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Documents sans référence de publicationPRINCAUD, Marion; CORNIER, Alain; FROELICH, Daniel; PIERSON, Yves (2009)By a proactive approach in ecodesign, DCNS, a major french shipbuilder, wants to create a tool to assess the impacts on the aquatic environment, but also an eco-design tool making it possible to improve design.It is in ...
-
Article dans une revue avec comité de lectureBEZATI, Feliks; FROELICH, Daniel; MASSARDIER, Valérie; MARIS, Elisabeth (Elsevier, 2011)A description of a new technology for automatic sorting of plastics, based on X-ray fluorescence detection of tracers, added in such materials is presented. This study describes the criteria for the selection of tracers, ...
-
Polymer tracer detection systems with UV fluorescence spectrometry to improve product reyclability Article dans une revue avec comité de lectureThe recycling of materials originating from end-of life products is essential to preserve our raw material resources, which are increasingly expensive and whose extraction is increasingly impactful for the environment. ...
-
Article dans une revue avec comité de lectureBEZATI, Feliks; MASSARDIER, Valérie; BALCAEN, Jean; FROELICH, Daniel (Elsevier, 2010)This research work deals with the effect of rare earth oxides on the PP matrix with respect to the thermal and mechanical properties and to the photo-degradation under UV irradiation exposure. The rare earth oxides are ...
-
Article dans une revue avec comité de lectureMATHIEUX, Fabrice; FROELICH, Daniel; MOSZKOWICZ, Pierre (Elsevier, 2006)Significant improvements in end-of-life complex product recovery can be accomplished when recovery aspects are better integrated at the design stage of products. This paper introduces a new method that should allow design ...