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Recycling of post-consumer waste materials is gaining increased interest due to public awareness, legislative promotion and imposition, economic benefits and appropriate technologies being available. The present paper does not deal with municipal solid waste as such, but only with the recyclable constituents. The paper does not aim at presenting recycling process details and/or fundamental research results, but reviews the major recyclables with their reuse potential, recycling technologies used, problems, solutions and potential areas of future research and development. These target recyclables include paper and cardboard, aluminium cans, glass beverage bottles, scrap metal and steel cans, scrap tyres, batteries and household hazardous waste. The present paper sets the overall picture and deals with paper, cardboard and aluminium cans only. A second part of the paper assesses the other target recyclables. The assessment of the waste availability, the existing and currently developed recovery and recycling technologies, and the economically rewarding markets while recycling, stress the technical, economic and environmental importance of this waste management sector. The activities associated with the recovery and recycling of post-consumer wastes require a strong sustainable engineering input at all phases of the treatment, from input quality control, to the selection of the most appropriate technology and the delivery of the recyclables as readily reusable feedstock. [ABSTRACT FROM AUTHOR]

This article highlights a technique developed by scientists at the Yokohama City Sewage Bureau in Japan in June 1991, which turns sewage into paper. The technique entails heating the sewage to 1,450 degrees Fahrenheit and spinning it. Thus far, the weak, speckled paper has been used to make business cards for the bureau's officials. But, because the average Yokohaman produces enough sewage to make four sheets of paper each day, city officials are examining other potential uses for this unlikely resource.

This article reports on a paper bicycle frame designed by Yoshifumi Kato of the Japan Bicycle Technical Center in Inuyama that is both lightweight and recyclable. The frame, which is made from handmade paper fibers and epoxy with a thin plastic coating, weighs only 1,300 grams. Standard aluminum or carbon-fiber frames can weigh up to 1,800 grams and even the lightest racing bikes weigh 1,200. Furthermore, a frame is badly mangled in an accident can be dropped off at a recycling center instead of at the dump.