文档介绍：Life Cycle Assessment: A Tool for Evaluating and Comparing Different Treatment Options for Plastic Wastes
G. Dodbiba 1, 1, T. Furuyama 2,
J. Sadaki 1, T. Kamo 3, and T. Fujita 1
1. Department of Geosystem Engineering, The University of Tokyo, Japan
2. Department of Earth Resource Engineering, Kyushu University, Japan
3. National Institute of Advance Industrial Science and Technology, Japan
Outline
1. LCA Methodology (ISO 14040)
2. LCA of Plastic Wastes from Discarded TV Sets
3. Concluding Remarks
1. LCA Methodology (ISO 14040)
2. LCA of Plastic Wastes from Discarded TV Sets
3. Concluding Remarks
Outline
Scope of LCA
… to evaluate or compare
the life cycle of “products”
Life-Cycle Stages and Boundaries
(Source: EPA, 1993)
Definition of products;
Choice of alternatives;
Definition of system boundary;
Data collection;
Theoretical calculation;
Evaluation
Reporting the results;
Propose improvement;
Methodology: Life Cycle Assessment, (ISO 14040)
Phase 1:
Phase 2:
Phase 3:
Phase 4:
(Source: Consoli ., 1993)
Aim of Study
… to evaluate and compare
different recycling options
for plastic wastes from old TV sets
in context of LCA
Compositions of a TV Set (weight %)
(Source: O. Murakami, Mitsubishi Elec. ADVANCE, pp. 6-9, 2001).
Conventional Recycling System for TV sets
Problem:
How to recycle plastic wastes?
Objective
… to compare two different recycling options for plastic wastes from old TV sets in context of LCA.
Option 1: Incineration of plastics for energy recovery (also known as thermal recycling)
Option 2: Sorting plastics for mechanical recycling (also know as material recycling)