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首页> 外文会议>European biomass conference and exhibition;ETA-Florence Renewable Energies >THE METHOD DEVELOPMENT SEQUEX: BIOAVAILABILITY OF TRACE ELEMENTS FOR BIOGAS PRODUCTION
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THE METHOD DEVELOPMENT SEQUEX: BIOAVAILABILITY OF TRACE ELEMENTS FOR BIOGAS PRODUCTION

机译：方法开发后遗症：用于生产生物气的微量元素的生物利用度

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摘要

The significance of the method of sequential extraction for the evaluation of the bioavailability of tracernelements in biogas formation process was investigated by supplementation tests (batch tests and semi-continuousrntests). According to their bioavailability, eleven nickel compounds were arranged in an order. The shift of nickelrnconcentrations between the fractions while increasing the gas production rate determined by sequential extractionrnrepresents assumedly the adsorption process on the cell membrane. We found that the bioavailability of the tracernelements in the successively extracted fraction does not decrease continuously, but it has to be evaluated element andrntime specific. Fermentation substrates used for the experiments were generated in test reactors by depleting only onerntrace element. Simultaneously the correlation between trace element supply, organic loading rate and trace elementrnconcentration was quantified. Furthermore storage stability of the samples, as well as the impact of extractionrnduration and temperature was examined.
机译：通过补充试验（分批试验和半连续试验）研究了顺序提取方法对沼气形成过程中微量元素生物利用度评估的重要性。根据其生物利用度，将11种镍化合物按顺序排列。假定各部分之间镍浓度的变化，同时通过顺序萃取确定的产气速率增加，则代表了在细胞膜上的吸附过程。我们发现，连续提取的级分中微量元素的生物利用度并没有连续降低，但必须评估其元素和时间的特异性。用于实验的发酵底物是通过仅消耗微量元素而在测试反应器中产生的。同时定量分析了微量元素供应，有机负载率和微量元素浓度之间的关系。此外，还研究了样品的储存稳定性以及提取时间和温度的影响。

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