Effectiveness of natural, commercial and modified calcium-based sorbents as H2S removal agents at high temperature

Article Abstract:

One of the most important gas cleaning steps is coal gas desulfurization prior to its use in a gas turbine in integrated gasification combined cycle (IGCC) systems. Twelve different calcium-based materials, both natural, commercial and modified and several additives were tested in a drop tube reactor for possible use as H2S removal agents at high temperature and reducing conditions. A dolomite and three limestones were chosen for their different natures and reactivities.

Nonclay Refractory Manufacturing, Nonclay refractories, Hydrogen Sulfide, Dimension stone, Dimension Stone Mining and Quarrying, Limestone (Dimension Stone), Dolomite, Dolomite-Mag Brick, Shapes, Analysis, Refractories (Materials), Sand, gravel and stone industry, Sand and gravel industry, Stone industry, Bricks, Chemical industry, Sulfur industry, Limestone, Stone quarrying

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Heterogeneity of platinum group metals in airborne particles

Article Abstract:

Chalmers University of Technology conducted this study that analyzes the concentrations of three of the platinum group metals, Pd, Pt and Rh, that are emitted by automobile catalysts and which are of potential risk to human health.

Platinum Group Compounds, Statistical Data Included, Research, Motor vehicles, Platinum group, Platinum group metals, Chalmers University of Technology

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Leaching of concrete admixtures containing thiocyanate and resin acids

Article Abstract:

Testing of the leaching of concrete admixtures containing thiocyanate and resins acids showed significant release. The potential ecotoxicological risks are evaluated.

Sweden, Concrete, Gypsum, Plaster, Nonmetallic Mineral Product Manufacturing, Concrete, Gypsum, and Plaster Products, Gum and Wood Chemical Manufacturing, Gum and wood chemicals, Thiocyanates, Tall Oil & Products, Concretes, Gypsum, Plaster, Building materials, Concrete, Nitrogen compounds, Tall oil

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