Abstract Users of biochar in the field require this product to reliably meet its declared specifications. For the first time, this work investigated, whether these specifications could be reproducibly obtained as a sole function of the thermal history of the biomass feedstock during slow pyrolysis, irrespective of the type and scale of the production unit. Using volatile matter content as a proxy for a wider set of biochar quality parameters, biochar from units at scales from grams to hundreds of kilograms, representing three main types of slow pyrolysis units (fixed bed, screw reactor and rotary kiln) were investigated. For the first time we showed that comparable biochar could be produced by these very different pyrolysis units, with good reproducibility within individual as well as among separate production runs.

中文翻译：

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生物炭特性随时间和生产规模的一致性：标准材料的表征

摘要 生物炭领域的用户要求该产品可靠地满足其声明的规格。这项工作首次调查了这些规格是否可以作为生物质原料在缓慢热解过程中的热历史的唯一函数而可重现地获得，而不管生产单元的类型和规模如何。使用挥发性物质含量作为更广泛的生物炭质量参数集的代理，研究了从克到数百公斤的单位规模的生物炭，代表了三种主要类型的慢热解装置（固定床、螺杆反应器和回转窑）。我们第一次表明，这些非常不同的热解装置可以生产可比较的生物炭，并且在单个生产过程中以及在不同的生产运行中具有良好的重现性。