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An exploratory study of alkali sulfate aerosol formation during biomass combustion

机译：生物质燃烧过程中碱金属硫酸盐气溶胶形成的探索性研究

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It is still in discussion to what extent alkali sulfate aerosols in biomass combustion are formed in the gas phase by a homogeneous mechanism or involve heterogeneous or catalyzed reactions. The present study investigates sulfate aerosol formation based on calculations with a detailed gas phase mechanism. The modeling predictions are compared to data from laboratory experiments and entrained flow reactor experiments available in the literature. The analysis support that alkali sulfate aerosols are formed from homogeneous nucleation following a series of steps occurring in the gas phase. The rate-limiting step may be the oxidation of sulfite to sulfate, rather than the oxidation of SO_2 to SO_3 proposed previously. Even though the proposed model is consistent with experimental observations, experiments in a rigorously homogeneous system are called for to test its validity.
机译：仍在讨论在生物质燃烧中碱金属硫酸盐气溶胶在多大程度上通过均相机理在气相中形成或涉及多相或催化反应。本研究基于具有详细气相机理的计算研究了硫酸盐气溶胶的形成。将建模预测与文献中提供的实验室实验和气流床反应器实验数据进行比较。分析支持碱式硫酸盐气溶胶是由在气相中发生的一系列步骤之后的均相成核形成的。限速步骤可以是亚硫酸盐氧化成硫酸盐，而不是先前提出的SO_2氧化成SO_3。即使所提出的模型与实验观察结果一致，也需要在严格均质的系统中进行实验以测试其有效性。

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