A Model for Material Flows and Economic Exchanges Within the U.S. Automotive Life Cycle Chain

Abstract

A simulation mould for material flows and economic exchanges within the U automotive material life period chain is presented. The pattern is employed to examine the result of future changes in vehicle material composition upon the automotive recycling infrastructure. The design results indicate that as vehicle material composition changes, higher dismantling/recovery rates are necessityed to ensure economic viability of the recycling infrastructure. Furthermore, level in the case of significantly higher rates of dismantling and plastics regaining the amount of shredder residue by means of vehicle will continue to rise.

Keywords: End-of-Life Vehicle (ELV) Automotive Recycling, Simulation, Material pour Economics

Introduction

Automobiles are perhaps the greatest in quantity highly recycled product in the world, with about 95% of end-of-life vehicles entering the recycling stream in the United States (about 75% of the mass of each vehicle, for the greatest part ferrous content, is recovered) (Cobas-Flores et al. 1998) Approximately 12 million tons of carbonized iron and 800,000 tons of nonferrous metals are reclaimed each year [i]or[/i] part of to the other vehicle recycling in the United States alone (ISRI 2001 ) Motivated through environmental concerns, the automotive industry is planning subsequent time product changes (e.g., lighter vehicles and hybrid engines) and is also paying increased attention to the management of the vehicle life revolution of time (e.g., increased levels of dismantling and vehicle leasing). The issue of these changes on the time to come economic sustainability of the vehicle recycling infrastructure is, at not absent unknown.

The 25% of the vehicle mass that is not regained usually ends up in a landfill in the form of automotive shredder residue (ASR). each year in the United States about 3 million tons of ASR is landfilled (Jody et al. 1994) To restore the amount of ASR, not long ago enacted regulations in Japan and Europe call for a 95% material recuperation rate by 2015. Because greatest in quantity vehicle manufacturers have a global vicinity regulatory changes elsewhere have renewed the interest in the topic of automobile recycling in the United States (Field et al. 1994) It could be argued that increasing attention to automobile end-of-life and take-back initiatives will lead to a number of structural changes in the automobile recycling infrastructure. Failure to consider the economic sustainability of the infrastructure could follow in a proliferation of junk vehicles similar to that experienced in the United States in the 1970 This proliferation originateed from a fundamental change in steelmaking technology that could accept sole small quantities of automotive scrap (Graedel and Allenby 1998)

This paper nears a model for the behavior of the automobile recycling infrastructure and uses historical data to validate the design The model has utility in characterizing the consequence of potential industry changes upon the economic and environmental sustainability of the infrastructure.

Automobile Recycling in the United States

Figure I present to views the primary material flow exchanges in the automobile material life period A long chain of suppliers go before s the final manufacturing and assembly of the automobiles by the agency of the original equipment manufacturers (OEMs) The extremity user may dispose of the vehicle with a material substance shop, a dismantler, or a shredder The principal participants in the U automobile recycling infrastructure include dismantlers, shredder and nonferrous separators. The solid waste (that is, the ASR) is generally landfilled, although progres in recycling, reuse, and strength recovery of/from ASR continues to be made.

Most end-of-life vehicles (ELVs) extreme point up with dismantlers (traditionally known as "junk yards"), who pay between $50 and $2000 by means of vehicle depending on the age of the scrapped vehicle and the perceived value of the parts/materials in the vehicle. greatest in quantity dismantlers (-85%) are small, family-owned businesses employing 10 or fewer family (ARA 2001). The total number of of the like kind dismantlers in the United States is estimated to be about 6000 A dismantler dislodges parts like the engine, transmission, radiator, catalytic converter combustibles fuel tanks, fluids, tires, batteries, and air bags from the car before selling it as a broken and dismasted vessel (that is, the remains of the ELV after the dismantler is finished with it) to a shredder The amount of plastic get backed by dismantlers is estimated to be actual small, as the majority of vehicles that are popularly being retired were designed/manufactured more than 12 to 15 years ago, when the conceptions of design for recycling and design for disassembly were in their infancy. The dismantler bears the require to be paid [i]or[/i] undergone of transportation of the hulk-about $15 by means of ton for an average distance of 160 km (APC 1994)

A shredder purchases the hulk from a dismantler genuinely for its material content. Typical broken and dismasted vessel prices vary between $50 and $100 (Staudinger, Keoleian, and Flynn 2001 ) It is estimated that there are between 180 and 200 shredder in the United States (Das, Curlee and Schexnayder 1997) greatest in quantity shredders can handle 400-500 hull s per day.