industrial processes release a range of gaseous and particulate pollutants containing heavy metals into the air. lack of enough attention to the design, installation, repair and maintenance of gas and dust filtration systems in industries, is one of reasons of increasing the emissions of these pollutants. hereon, the steel making processes is one of emission sources of heavy metals. according t...

Electrostatic Precipitators (ESP) are most important device used to control the pollution by collecting dust particles present on flue gases. In power plants, Coal used in Indian thermal power stations is of inferior grade, at power plant flue gas is often treated with a series of chemical process and scrubbers, having low calorific value (3500-4500)kcal/kg and high ash content due to drift ori...

Experiments were performed at lab scale in order to test the possibility to grow microalgae with CO2 from gaseous effluent of cement industry. Four microalgal species (Dunaliella tertiolecta, Chlorella vulgaris, Thalassiosira weissflogii, and Isochrysis galbana), representing four different phyla were grown with CO2 enriched air or with a mixture of gasses mimicking the composition of a typical...

Waste generation is a part of every technological process, including galvanizing. The presented paper deals with the characterization flue dust generated in process hot-dip galvanizing, and proposes possible methods for zinc recycling. released into atmosphere as white fume above bath, which caused by decomposition ammonium chloride present flux. This classified hazardous waste material particl...

. This report summarizes results of a project to character& air toxic emissions of selected hazardous air pollutants (HAPS) from the AirPol Gas Suspension Absorption SO2 control technology. This project was sponsored by AirPol Inc., the Tennessee Valley Authority (TVA), and the U.S. Department of Energy (DOE). The GSA process utilizes a semi-dry lime scrubber for SO2 and HCI removal. Most of th...

2. . Iron requirement for Chlorella. Bot. Gaz. 84: 407427. 1927. 3. JONES, H. W. The effect of ammonium sulphate upon the availability of iron in nutrient solutions. New Jersey Sta. Report. 405-409. 1920. 4. , and SHIVE, J. W. The influence of iron in the forms of ferric phosphate and ferrous sulphate upon the growth of wheat in a nutrient solution. Soil Sci. 11: 93-101. 1921. 5. Journal of the...

The possibility of selective leaching process was investigated during molybdenite flue dust leaching to recover its rhenium content. The results show that addition of alcohols to water makes the medium less favorable for molybdenum transfer into aqueous phase. On the other hand, addition of small amounts of alcohols (5-15%) makes a noticeable separation of rhenium over molybdenum, but by increa...