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A review on mineral waste for chemical-activated binders: mineralogical and chemical characteristics

Sedira N., Castro-Gomes J., Kastiukas G., Zhou X., Vargas A.

Mining Science

2017

Vol. 24

29--58

This review discusses the potential of alkali-activated materials obtained from mineral waste. A brief historical background on alkali-activated materials is presented. Recent advances in the development of binders obtained from mineral wastes and alkali-activated solutions are described. The scope of this state of the art review is to identify current knowledge in support that mineral waste can be used for the production of alkali-activated binders. In addition, this review identifies the chemical activators that can be effectively utilized for such purposes in the age when wastes are still viewed by industry as dis-posable. Some mineral wastes which are discussed can be viewed as a new resource for recycling and recovery which will offer important economic and social benefits.

Removal of nitrogen oxides from flue gases in a packed column

Kuropka J.

Environment Protection Engineering

2011

Vol. 37, nr 1

13-22

The state of technology and the possibilities of removal of nitrogen oxides from flue gases in alkaline solutions with oxidants have been presented. The results of the research on the absorption of nitrogen oxides in alkaline solution of sodium hypochlorite in a packed column showed high efficiencies of removal of nitrogen oxides in a wide range of the following parameters: gas velocity, spraying density, concentration of nitrogen oxides in gas and concentration of spraying solution.