DDT, DDD, and DDE chlorination by zero-valent iron

Article Abstract:

Zero-valent iron was found capable of dechlorinating chlorinated aliphatics and aromatics such as DDD, DDE, and DDT. The powdered zero-valent iron in buffered anaerobic aqueous solution was able to dechlorinate the pesticides at rates independent of the amount of iron and the presence of surfactants. A mechanistic model had demonstrated that the rate of dechlorination of the solid-phase reactants is influenced by the rate of dissolution into the aqueous phase.

Iron and Steel Mills, Pesticide and Other Agricultural Chemical Manufacturing, Agricultural chemicals, not elsewhere classified, DDT, Primary metal products, not elsewhere classified, Iron Powders, Iron, Iron (Metal), DDT (Insecticide), Pesticides

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Reductive dechlorination of 1,2,3,4-tetrachlorodibenzo-p-dioxin and its products by anaerobic mixed cultures from Saale River sediment

Article Abstract:

Anaerobic bacteria from sediment of the river Saale in Germany appears to dechlorinate 1,2,3,4-tetrachlorodibenzo-p-dioxin (1,2,3,4-TCDD). The main product of the dechlorination process is 1.3-dichlorodibenzo-p-dioxin, which is the result of the loss of a lateral chlorine atom from the intermediate compound, 1,2,4-trichlorodibenzo-p-dioxin. The dechlorination of 1,2,3,4-TCDD was also studied using other soils and sewage sludge.

Research and Development in the Physical, Engineering, and Life Sciences, Pollution R&D NEC, Germany, Dioxin, Dioxins, Pollution control research

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Natural sorbents in oil spill cleanup

Article Abstract:

In a laboratory setting, milkweed and cotton fibers sorbed more crude oil from sea water than polypropylene fibers or webbing did. The milkweed fiber sorbed 40g of crude oil/g of fiber. The oil sorbed by the natural fibers can be recovered and the fibers used several times. The natural fibers are also biodegradable.

Usage, Oil spills, Sorbents

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