Environmental Impacts of Profile Pipe Manufacturing
摘要
This study aims to find out the environmental impacts of three different profile pipe manufacturing through life cycle assessment methodology. All the profile pipes have the same dimensions of 40 mm wide, 40 mm high and 6 m long. However, the wall thicknesses are 1.5 and 3 mm. Two of them are made from black material whereas the third one is produced from galvanized sheet. Life cycle assessment study is performed on data collected from an actual facility by following ISO 14040–ISO 14044 guidelines. Accordingly, goal and scope definition, inventory analysis, impact assessment; and interpretation steps are realized. GaBi software, Ecoinvent database and CML 2001 methodology are adopted for modelling. The investigated environmental impact categories are: Global warming (GWP), abiotic depletion elements (ADP-elements), abiotic depletion fossil (ADP-fossil), acidification (AP), eutrophication (EP), freshwater aquatic ecotoxicity (FAETP), human toxicity (HTP), ozone depletion (ODP), photochemical ozone creation (POCP) and terrestrial ecotoxicity (TETP) potentials. Recycling of scraps are found to lower the unwasted impacts. Transportation has the main share in ODP for pipes from black material. Boron oil input generates ODP of galvanized pipe production. Energy consumption has the main share in all the impact categories except for ODP. Using wind energy instead of grid electricity reduces the unwanted environmental impacts.