Utilization of chemical waste and by-products as one of technological progress directions

Abstract

Getting cement-free lime-containing binder by firing thereof and mixed grinding of sand together with solid sludge of still waste liquid being bulk waste of soda ash production is analyzed herein. The experience of making masonry autoclaved concrete blocks and construction of low-rise residential houses therefrom is presented. Lime-containing sludge of still waste liquid, i.e. waste of soda ash production, is shown to be prospective raw material in making construction materials as a substitute for lime.

Cyclic Polyphenylene Sulfide as Additive to Improve the Mechanical Properties of Polystyrene-Based Materials

“…2−6 However, making full use of discarded byproducts and making them serve humans is the better way to save energy and resources and protect our planet. 7,8 There have been some attempts to turn waste into treasure, and we would also like to solve such kind of problems from our perspective, supramolecular chemistry. 9,10 Polyphenylene sulfide (PPS) is one of the most significant engineering plastics, but only linear PPS is in great demand and widely produced.…”

“…Thus, when we get plentiful amounts of commodities by mass production, the resulting byproducts and wastes pollute our environment. Although some efforts are being made to collect byproducts and deal with them in a less harmful way to prevent pollution, they are still discarded as waste. − However, making full use of discarded byproducts and making them serve humans is the better way to save energy and resources and protect our planet. , There have been some attempts to turn waste into treasure, and we would also like to solve such kind of problems from our perspective, supramolecular chemistry. , …”