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The analysis of indirect emissions due to intermediate production. An enlarged input-output-model with emission coefficients for airpollutants, waste and wastewater for 58 branches based on a techno-economic database

Paper presented at the OECD/IEA expert workshop; Paris 21./22.5.1992
: Hohmeyer, O.; Walz, R.
: Fraunhofer-Institut für Systemtechnik und Innovationsforschung -ISI-, Karlsruhe

Karlsruhe: ISI, 1992, 10 pp.
Fraunhofer ISI ()
external cost; externe Kosten; Input-Output-Analysis; Input-Output-Analyse; Life-Cycle-Analysis; Life-Cycle-Assessment; Life-Cycle-Inventory; Ökobilanz; Sachbilanz; water pollution; carbon dioxide; nitrogen oxide; solid waste; waste water; Federal Republic of Germany; chemical effluent; air pollution; industry; foreign technology; data processing; data acquisition system; environmental impact; statistical data; production

Life-Cycle-Analysis requires the analysis of the vertual process chain from the mining of a raw material to the deposition of the final product as well as the analysis of the horizontal process chains in order to consider more than the direct environmental impacts only. The paper demonstrates that an input-output analysis augmented with branch specific emission coefficients can improve the data base of life-cycle-analysis. A combination of both methods seems to be the best way to perform life-cycle-analysis with the input-output analysis dealing with the effects otherwise neglected. Based on the official German input-output-tables and a large techno-economic database containing specific emission coefficients this model allows the analysis of intermediate emissions of a number of relevant air and waste water pollutants as well as many other types of waste. The basic advantage of using an input-output-model is the identification not only of the direct but also of the indirect emissions of the production of a specific good. The basic design of such an enlarged input-output-system is shown. The basic input-output-model is a functionally disaggregated open Leontief-Model disaggregated into 58 branches. The economic tables serve as a basis for the German input-output-tables supplied to the EEC as part of the European input-output-tables. To connect the input-output table of such a model, representing the production and consumption sector of the economy and its foreign trade relation, to the environment, branch specific emission coefficients have to be derived for each industry as well as the private sector of final demand.