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化工学报  2013 

水热炭化制备污泥生物炭的碳固定

DOI: 10.3969/j.issn.0438-1157.2013.07.043, PP. 2625-2632

Keywords: 水热炭化,水热温度,污泥生物炭,碳固定,拉曼光谱

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Abstract:

采用水热炭化法将市政污泥与印染污泥在不同的水热温度下制备成生物炭,并着重分析了污泥生物炭的碳固定指标与水热温度的关系。结果表明,污泥泥质和水热温度对生物炭碳固定特性影响明显。市政污泥的水热炭化以脱羧为主,而印染污泥则以脱水为主。随着水热温度升高,两种生物炭中碳元素含量、炭产率和碳回收率均下降,但市政污泥生物炭中稳定碳的含量及其产率增加,稳定性提高,而印染污泥则呈现相反的变化趋势。这一结果指出,市政污泥生物炭的碳固定性能明显优于印染污泥,并且应进一步研究不同污泥泥质特征与炭化碳固定效果的关系。

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