An alternative parameter to characterize biogas materials: Available carbon-nitrogen ratio.
An alternative parameter to characterize biogas materials: Available carbon-nitrogen ratio.
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DOI：
10.1016/j.wasman.2017.02.025
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发表时间：
2017-04
期刊：
影响因子：
8.1
通讯作者：
Ming Wang;Wenzhe Li;Pengfei Li;Shuiping Yan;Yan-lin Zhang
中科院分区：
文献类型：
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作者：
Ming Wang;Wenzhe Li;Pengfei Li;Shuiping Yan;Yan-lin Zhang
提出了有效碳氮比（AC/N）作为评价沼气原料潜力的替代参数。在AC/N比的计算中，仅包括在厌氧消化（AD）过程中可被有效利用的碳。与总C/N相比，AC/N更适合于表征富含柠檬酸类成分的沼气原料。选取9种常用沼气原料，进行了长达110 d的一系列半连续试验，考察了有效碳的来源以及AC/N与AD工艺稳定性的关系。结果表明，只有蛋白质、糖类、脂肪和半纤维素中的碳才能作为厌氧微生物的有效碳。初步确定了半连续AD工艺的最佳AC/N为11 ~ 15。综上所述，我们的研究结果表明，AC/N比总C/N更有效的评价AD过程的潜在性能。
Available carbon-nitrogen ratio (AC/N) was proposed as an alternative parameter for evaluating the potential of biogas materials in this paper. In the calculation of AC/N ratio, only the carbon that could be effectively utilized in anaerobic digestion (AD) process is included. Compared with total C/N, AC/N is particularly more suitable for the characterization of biogas materials rich in recalcitrant components. Nine common biogas materials were selected and a series of semi-continuous tests for up to 110 days were carried out to investigate the source of available carbon and the relationship between AC/N and the stability of AD process. The results showed that only the carbon existing in proteins, sugars, fat and hemicelluose should be considered as available carbon for anaerobic microbes. Besides, the optimal AC/N for semi-continuous AD process was preliminarily determined to be 11–15. Taken together, our results demonstrate that AC/N is more effective than total C/N in the evaluation of the potential performance of AD process.