Influence of the reactant carbon–hydrogen–oxygen composition on the key products of the direct gasification of dewatered sewage sludge in supercritical water
- DOI码：10.1016/j.biortech.2016.02.070
- 发表刊物：Bioresource Technology
- 摘要：The supercritical water gasification of ten different types of dewatered sewage sludges was investigated to understand the relationship between sludge properties and gasification products. Experiments were performed in a high-pressure autoclave at 400 °C for 60 min. Results showed that gasification of sewage sludge in supercritical water consists mainly of a gasification reaction, a carbonization reaction and a persistent organic pollutants synthesis reaction. Changes in the reactant C/H/O composition have significant effects on the key gasification products. Total gas production increased with increasing C/H2O of the reactant. The char/coke content increased with increasing C/H ratio of the reactant. A decrease in the C/O ratio of the reactant led to a reduction in polycyclic aromatic hydrocarbon formation. This means that we can adjust the reactant C/H/O composition by adding carbon-, hydrogen-, and oxygen-containing substances such as coal, algae and H2O2 to optimize hydrogen production and to inhibit an undesired by-product formation.
- 卷号：208
- 期号：0
- 页面范围：81-86
- 是否译文：否
- 发表时间：2016-02-23
- 收录刊物：SCI
- 发布期刊链接：http://www.sciencedirect.com/science/article/pii/S0960852416302073
