Biodesulfurization of coals of different rank: effect on combustion behavior

Article Abstract:

Researchers studied biodesulferization of coals using bacteria obtained either from the coal, or from mine-drainage water. Four different types of coals were studied, from anthracite to subbituminous. To assist the bacteria, aeration was increased by powdering the coal. Afterwards, the test sample was washed with HCL to remove the freed sulphur. The study also compaired the treated coal with untreated coal to determine combusion rates. The results of the study show that the bacteria remove a substantial amount of the sulphur and combusion rates were not substantially changed.

United States, Bituminous Coal and Lignite Mining, Coal, Coal Mining, Usage, Bioremediation, Coal industry, Sulfur bacteria

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Modeling of fugitive dust emission for construction sand and gravel processing plant

Article Abstract:

Researchers in Taiwan study construction sand and gravel manufacturing processes in order to predict a plant's dust emissions. Different sources of dust emissions as well as environmental factors are incorporated into mathematical formulas that can estimate the plant's dust emission behavior.

Taiwan, Air Pollution Control, Waste Management and Remediation Services, Crushed and Broken Stone, Crushed Stone, Stone Mining and Quarrying, Statistical Data Included, Illustration, Stone quarrying

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Silica fume as a radon retardant from concrete

Article Abstract:

Researchers from the City University of Hong Kong investigated on the use of silica fume as partial substitution to Portland cement to reduce the emanation of radon which can cause lung cancer.

Hong Kong, Industrial sand, Silica & Silica Sand, Industrial Sand Mining, Silica, Hong Kong, City University of

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