A novel method to measure air-immobile regions of the composting pile by inverse calculation combined with gas tracer test
文献类型：期刊论文
| 作者 | Chen, Yixiao1; Qin, Haiguang1; Lu, Yulan1; Liu, Hongtao2; Zhang, Jun1,3 |
| 刊名 | WASTE MANAGEMENT
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 150页码:131-140 |
| ISSN号 | 0956-053X |
| 关键词 | Sewage sludge Composting Greenhouse gas Air-immobile region Two-region model |
| DOI | 10.1016/j.wasman.2022.06.036 |
| 通讯作者 | Liu, Hongtao(liuht@igsnrr.ac.cn) ; Zhang, Jun(zjun@glut.edu.cn) |
| 英文摘要 | Air-immobile regions in composting piles obstruct O-2 mass transport and exacerbate the formation and emission of harmful off-gases. However, effective methods for measuring the parameters of these air-immobile regions are lacking. With quartz sand piles, this study first adjusted the circumstances of a gas tracer test (gas tracer, its injection volume, and chamber type) using the two-region model (TRM). The effects of beta (proportional coefficient of gas in the air-mobile region) and omega (mass exchange coefficient) on the breakthrough curves (BTCs) of the gases were then explored. Finally, an inverse calculation method was used to measure the feature parameters of air-immobile regions in two composting piles (temperature-increasing and thermophilic phases) and estimate the O-2 concentrations in different composting piles (50, 100, 200 cm whole height; layers of 50, 100, 200 cm height in a 200-cm high pile). The results showed that the optimal conditions were achieved when 100 mL helium (He) as the gas tracer and a cylinder with a height/diameter ratio of 3 as the chamber were used. With the simulating composting piles, increasing beta or omega slowed breakthrough and decreased peak concentration in BTCs of a gas tracer. Tracer-inverse calculation protocol can be used to efficiently estimate the volume ratios of air-immobile regions (phi) and first-order mass transfer coefficient (alpha), with the values of 39%/46% and 0.001/0.006 min(-1) in the composting piles during temperature-increasing /thermophilic phase. The TRM also predicted the O-2 con-centration in the off-gas or air-mobile/immobile regions of the temperature-increasing-phase composting piles. |
| WOS关键词 | TRANSPORT-PROPERTIES ; DIFFUSION ; EMISSION ; SEDIMENT ; AMMONIA ; WASTE ; MODEL |
| 资助项目 | National Natural Science Foundation of China[51868011] ; Department of Science and Technol-ogy of Guangxi[2018GXNSFGA281001] ; Special Fund for Guangxi Distinguished Experts |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000831059700001 |
| 资助机构 | National Natural Science Foundation of China ; Department of Science and Technol-ogy of Guangxi ; Special Fund for Guangxi Distinguished Experts |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/181391]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Liu, Hongtao; Zhang, Jun |
| 作者单位 | 1.Guilin Univ Technol, Guangxi Key Lab Environm Pollut Control Theory & T, Guilin 541004, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Guilin Univ Technol, Guangxi Key Lab Environm Pollut Control Theory & T, 12 Jiangan Rd, Guilin 541004, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Yixiao,Qin, Haiguang,Lu, Yulan,et al. A novel method to measure air-immobile regions of the composting pile by inverse calculation combined with gas tracer test[J]. WASTE MANAGEMENT,2022,150:131-140. |
| APA | Chen, Yixiao,Qin, Haiguang,Lu, Yulan,Liu, Hongtao,&Zhang, Jun.(2022).A novel method to measure air-immobile regions of the composting pile by inverse calculation combined with gas tracer test.WASTE MANAGEMENT,150,131-140. |
| MLA | Chen, Yixiao,et al."A novel method to measure air-immobile regions of the composting pile by inverse calculation combined with gas tracer test".WASTE MANAGEMENT 150(2022):131-140. |
入库方式： OAI收割
来源：地理科学与资源研究所
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