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Gasification

Gasification is an extension of the pyrolysis process for thermochemical treatment of sludge, with the conversion taking place in a partial reducing atmosphere at higher temperatures than those used for pyrolysis. The process aims to completely convert the carbonaceous content to a solid ash and a clean combustible gas product (called syngas) for use locally.

Gasification related videos

Example of a commercial biomass gasification process, Valmet Source: Valmet / YouTube

Example of a commercial biomass gasification process, Valmet

Animation demonstrating the workings of Valmet's gasification technology. Using biomass to generate electricity and heat in existing coal boilers.

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Gasification features and blogs

Fig. 4.  SP filtrate and acidified sludge samples
Feature

Phosphorus recovery by sludge acidification and dewatering

A pilot-scale Danish study of phosphorus extraction from acidified anaerobic and aerobic sludge samples has revealed removal to be more effective from anaerobic sludges, even though the digested sludge alkalinity increases the total acid demand.

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