Showing papers on "Co-processing published in 1992"
01 Jan 1992
TL;DR: In this paper, the authors discuss the potential uses of a wide variety of waste materials in geotechnical systems, highway pavements and construction products, including Incinerator Ash, flue gas desulfurization sludge, coal mine waste, microsilica, rubber tires, phosphogypsum, carbide lime waste, and sewage sludge.
Abstract: Industrial growth has increased the volume of wastes generated from energy production, mining, industrial processes and civil works. For economic and related reasons, the use of waste materials in construction as partial or full replacements for conventional geomaterials has increased. This proceeeings, Utilization of Waste Materials in Civil Engineering Construction, consists of papers that discuss policy issues, current practices, performance requirements, engineering characteristics and the potential uses of a wide variety of waste materials in geotechnical systems, highway pavements and construction products. Among the waste materials covered are: 1) Incinerator ash; 2) flue gas desulfurization sludge; 3) coal mine waste; 4) microsilica; 5) rubber tires; 6) phosphogypsum; 7) carbide lime waste; and 8) sewage sludge.
19 citations
TL;DR: In this article, the authors proposed a closed-cyclic industrial system based on the principle of continuous quantitative growth, where most products and commodities are simply discarded after use, so additional quantities of waste are obtained.
Abstract: Our present industrial system is based on the principle of continuous quantitative growth. Its production processes are mostly based on the consumption of raw mineral and fossil materials and are connected with the coproduction of large quantities of by-products and other waste material. After use, most products and commodities are simply discarded, so additional quantities of waste are obtained. Accumulation of persistent waste materials in the biosphere will force our economy in the near future to stop distributing persistent chemicals in the environment and to recycle all waste. This closed-cyclic economy will have considerable effects on the chemical industry, on chemical technology, and on chemical engineering science. It will be necessary to integrate waste collection and recycling into our production technologies as well as into our production costs. The impotance of raw mineral materials will decrease as they will be substituted by renewable resources. In the same way fossil fuels will have to be replaced by renewable energy sources.
6 citations