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Sources of matrix-bound phosphine in advanced wastewater treatment system

机译：先进废水处理系统中基质结合的磷化氢的来源

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Phosphine (PH_3), a highly toxic and reductive gas, has been explored in biogases and it proves also to be ubiquitous even in remote atmospheric air at a concentration in the order of (pg-ng)/m~3, For more than one hundred years, sources and mechanisms of biological phosphine formation in natural and engineered environments have been investigated and discussed. Anaerobic environments were reported to be the main source of phosphine emission. Matrix-bound phosphine, which is defined as the amount of phosphine gas liberated during acidic or caustic digestion of solids and sludge like environmental samples, has been defined by Gassmann and Glindemann. More recent studies have demonstrated that matrix-bound phosphine occurred in anaerobic digested sludge, manure, paddy field, sediment of reservoir, soils and fluvial and marine sediments. Previous research on the role of phosphine in wastewater treatment has turned attention almost only to the anaerobic digestion systems, and more than 85 percent of phosphine in anaerobic digestion systems was claimed to be matrix-bound phosphine.
机译：磷（PH_3）是一种剧毒的还原性气体，已经在沼气中进行了研究，并且即使在偏远大气中浓度为（pg-ng）/ m〜3的磷也被广泛使用，其中不止一种一百年来，已经研究和讨论了在自然和工程环境中生物膦形成的来源和机理。据报道，厌氧环境是磷化氢排放的主要来源。 Gassmann和Glindemann已定义了与基质结合的膦，其定义为在对固体和污泥（如环境样品）进行酸性或苛性消化过程中释放的磷化氢气体量。最近的研究表明，厌氧消化污泥，粪便，水田，水库沉积物，土壤以及河流和海洋沉积物中均发生基质结合磷化氢。以前关于磷化氢在废水处理中的作用的研究几乎只将注意力转移到厌氧消化系统上，据称厌氧消化系统中超过85％的磷化氢是基质结合的磷化氢。

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