Quantitative assessment of urban and industrial symbiosis in Kawasaki, Japan.

Environ Sci Technol

Asian Environmental Research Group, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba-City, Ibaraki, 305-8506, Japan.

Published: March 2009

AI Article Synopsis

  • * The Kawasaki case study identifies 14 symbiotic relationships among various industries, resulting in the diversion of at least 565,000 tons of waste from incineration or landfills annually.
  • * The collaborative exchanges, facilitated by government support and policies promoting recycling, highlight the significant economic potential, with four major symbioses valued at around 13.3 billion JPY (approximately 130 million USD) each year.

Article Abstract

Colocated firms can achieve environmental benefit and competitive advantage from exchanging physical resources (known as industrial symbiosis) with each other or with residential areas (referenced here as urban symbiosis). Past research illustrated that economic and environmental benefits appear self-evident, although detailed quantification has only been attempted of symbioses for energy and water utilities. This article provides a complimentary case studyfor Kawasaki, Japan. The 14 documented symbioses connect steel, cement, chemical, and paperfirms and their spin-off recycling businesses. Seven key material exchanges divert annually at least 565 000 tons of waste from incineration or landfill. Four of these collectively present an estimated economic opportunity of 13.3 billion JPY (approximately 130 million USD) annually. Five symbioses involve utilization of byproduct and two sharing of utilities. The others are traditional or new recycling industries that do not specifically benefit from geographic proximity. The synergistic effect of urban and industrial symbiosis is unique. The legislative framework for a recycling-oriented society has contributed to realization of the symbioses, as has the availability of government subsidies through the Eco-Town program.

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Source
http://dx.doi.org/10.1021/es803319rDOI Listing

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