Full
Outline
Moisture distribution and dewatering performance are critical indicators in the study of deep dewatering of bio-waste. Traditional characterization methods have several drawbacks such as large sample consumption, low detection efficiency, poor reproducibility of results, high costs, and difficulty in identifying the turning points of the water loss curve. To address these issues, the low-field nuclear magnetic resonance technique (LF-NMR) was conducted to calibrate the drying test for moisture distribution analysis and Fourier transform infrared spectroscopy (FTIR) was conducted for dewatering performance analysis. The results indicated that the turning point of the water loss curve could be accurately located by referring the LF-NMR detection results. Moreover, a conceptual model of the water loss curve for solid waste was proposed to refine the traditional "four stage curve". At the same time, the FTIR analysis result showed that the water band spectrum related to the O-H bending vibration of FTIR (1550~1750cm-1) could be deconvoluted into six sub-peaks. The area proportions of sub-peak 2 (p2) and sub-peak 4 (p4) in the water band spectrum of anaerobic digestate were significantly correlated with capillary suction time, and the summed ratio ∑p1~2/∑p4~6could characterize the dewatering performance of anaerobic digestate. The results of this study may provide a theoretical foundation and technical support for relevant research and applications regarding deep dewatering of bio-mass waste.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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