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Thermal destruction - non-oxidative

Non-oxidative thermochemical treatment of sewage sludge refers to treatment at elevated temperatures in the absence of oxygen. Methods include hydrothermal processes (HTPs), pyrolysis, and gasification, where gasification is based on partial oxidation of the organic carbon. Whereas pyrolysis and gasification require a substantially dry sludge product, HTPs are effective for sludges having a significant water content.

Thermal destruction - non-oxidative related videos

Example of biomass pyrolysis treatment scheme (Jin Wang and Peter He, Biofuels Edu) Source: Biofuels Edu: Biomass pyrolysis treatment scheme by kind permission of Jin Wang and Peter He, Biofuels Edu https://www.youtube.com/channel/UCmml0VBAF9O15sx2JbEAdTA, funded by the National Science Foundation and the U.S. Department of Agriculture / YouTube

Example of biomass pyrolysis treatment scheme (Jin Wang and Peter He, Biofuels Edu)

An animation demonstrating 'fast pyrolysis' producing bio-oil as the final product. This video is made available as part of the biofuels education projects funded by the National Science Foundation and the U.S. Department of Agriculture.

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Thermal destruction - non-oxidative 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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