ENVIRONMENTAL AUDITING: The Functional Unit in the Life Cycle Inventory Analysis of Degreasing Processes in the Metal-Processing Industry

摘要: and C2 hydrocarbons (trichloroethane, trichloroethene, tetrachloroethene, dichloromethane). Measures aiming at the reduction of toxic emissions ozone depletion potential (ODP) may possibly lead to a shift environmental impacts towards higher energy consumption, emission waste water, volatile organic compounds (VOC) with photochemical oxidant creation (POCP). The present article concerns itself life cycle assessment three main degreasing processes in order compare their integral one another. This is supplemented by presenting methodology inventory analysis (LCI). Generally, applicability established LCI method can be shown quite clearly. However, some difficulties arise, especially stage goal definition, as use process functional unit cannot pinned down easily neatly for most other products. definition not straightforward Among units identified are mass removed impurities, cleaning time, work, percentage purity, throughput parts, loads, or surface virtual coefficients. impurities turned out suitable parameter measuring technical performance processes. discusses background, purpose, scope, system boundaries, target group, tree representativeness study.