Development and application of life cycle assessment methodology for chemical processes = 화학공정에 대한 전과정 평가 기법의 개발과 적용

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The purpose of this thesis has been to increase the transparency of LCA(Life Cycle Assessmemt) as a decision-supporting tool and to improve the scientific basis of LCA, with the greatest focus on the chemical processes. Improving the scientific basis of LCA thus does not mean that new scientific theories are proposed or empirical experiments performed but that a method is designed based - as far as possible on the present status of relevant scientific disciplines. First, a LCA framework is proposed which distinguishes four different components: goal and scope definition, inventory, impact assessment and interpretation and the framework which is now in development in ISO. As far as possible, the ISO LCA framework and terminology is followed in this thesis. Goal & scope definition is concerned with defining the goal of the study in relation to the intended application. Application of LCA always involves some kind of comparison, for which a unit of use should be specified which is to form the basis for comparison. The unit is based on the function of the products to be compared, and is called the functional unit. In order to make a quantified survey of the environmental inputs and outputs of a product system, the boundary between the designated product system and other product systems must be determined, and some cut-off point set for the infinite regression of processes needed to produce inputs for other processes. Classification and characterization in impact assessment and interpretation are also discussed. In the classification component, the resource extractions and emissions associated with the life cycle of a product are translated into contributions to a number of environmental problem types, such as resource depletion, global warming, ozone depletion, acidification, and so on. To the end, each extraction and emissions is multiplied by a classification factor (or equivalency factor according to SETAC terminology) and the multiplication results are aggreg...
Park, Sun-Wonresearcher박선원researcher
한국과학기술원 : 화학공학과,
Issue Date
150187/325007 / 000955092

학위논문(박사) - 한국과학기술원 : 화학공학과, 1999.2, [ xiv, 179 p. ]


다중목적; 전과정평가기법; 최적화; 화학 공정; LCA; Life cycle assessment; Multiobjective; Chemical processes; Optimization

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