| Fine particles removal of pyrolysis gasification flue gas from rural domestic waste: Laboratory research, molecular dynamics simulation, and applications | |
Zhang, Yumeng1,2; Wei, Di1; Lv, Pengfei1; Liu, Zhenkun1; Cheng, T(程滕)1 ; Wang, B(王博)1 | |
| 2023-11-01 | |
| Online publication date | 2023-07 |
| Source Publication | ENVIRONMENTAL RESEARCH Impact Factor & Quartile |
| ISSN | 0013-9351 |
| Volume | 236 |
| page numbers | 10 |
| Abstract | Chinese rural domestic waste has increased considerably with the modernization of agriculture and urbanization. Pyrolysis gasification is a common high-temperature waste treatment method. However, this method is usually accompanied by a large amount of particle emission. In this study, a rural domestic waste pyrolysis gasification station in Gansu Province, Northwest China, was selected for research. The particle emission characteristics of this station were analyzed, and the results showed that the original particle removal technologies were inefficient in fine particles. Hence, a new method of fine particle treatment, i.e., Cloud-Air-Purifying (CAP) technology, was explored herein. In CAP, fine particles grow in size via heterogeneous condensation in a supersaturated water vapor environment and are then collected efficiently using a supergravity field. A laboratory-scale pyrolysis gasifier and CAP equipment were built. Moreover, the CAP removal efficiency for particles generated from four typical rural domestic waste categories was studied. The results showed that CAP technology considerably increased the efficiency of fine particle removal. However, the removal efficiency for particles released owing to the incineration of wood was only ∼75%. This was because the tar substances formed during wood pyrolysis were attached to the surface of escaping particles, which led to a decrease in their hydrophilicity and particle condensation growth. To address this issue, the improvement in particle hydrophilicity using different surfactants was studied via molecular dynamic simulations. When the increase in water molecule adsorption, surface polarity, and the solid–liquid interaction energy for different surfactants were compared, alkylphenol ethoxylate (OP10) proved to be the most effective surfactant. Finally, the improved CAP technology combined with OP10 was applied to the on-site pyrolysis gasification flue gas treatment. Long term monitoring of the proposed technology revealed that particle removal efficiency remained >94%, exhibiting excellent fine particle removal. The successful application of the proposed technology demonstrates its potential for further application. © 2023 Elsevier Inc. |
| Keyword | Condensation Flue gases Gasification Molecular dynamics Molecules Pyrolysis Surface active agents Waste incineration Waste treatment Air purifying Cloud-air-purifying technology Condensation growth Domestic wastes Dynamics simulation Fine particle pollution Fine-particles Molecular dynamic simulation Particle pollution Rural domestic waste |
| Publisher | Academic Press Inc. |
| DOI | 10.1016/j.envres.2023.116732 |
| Indexed By | EI ; SCIE |
| Language | 英语 |
| WOS Research Area | Environmental Sciences & Ecology ; Public, Environmental & Occupational Health |
| WOS Subject | Environmental Sciences ; Public, Environmental & Occupational Health |
| WOS ID | WOS:001058931400001 |
| EI Accession Number | 20233114458435 |
| EI Keywords | Rural areas |
| EI Classification Number | 451.1 Air Pollution Sources ; 452.4 Industrial Wastes Treatment and Disposal ; 801.4 Physical Chemistry ; 802.2 Chemical Reactions ; 802.3 Chemical Operations ; 803 Chemical Agents and Basic Industrial Chemicals ; 931.3 Atomic and Molecular Physics |
| Original Document Type | Journal article (JA) |
| PMID | 37495065 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.lzu.edu.cn/handle/262010/532236 |
| Collection | 资源环境学院 |
| Corresponding Author | Zhang, Yumeng; Wang, Bo |
| Affiliation | 1.Key Laboratory of Western China's Environmental Systems (Ministry of Education) and Engineering Research Center of Fine Particle Pollution Control Technology and Equipment, College of Earth and Environmental Sciences, Lanzhou University, Gansu Province, Lanzhou; 730000, China; 2.College of Atmospheric Sciences, Lanzhou; 730000, China |
| First Author Affilication | College of Earth Environmental Sciences |
| Corresponding Author Affilication | College of Earth Environmental Sciences |
| Recommended Citation GB/T 7714 | Zhang, Yumeng,Wei, Di,Lv, Pengfei,et al. Fine particles removal of pyrolysis gasification flue gas from rural domestic waste: Laboratory research, molecular dynamics simulation, and applications[J]. ENVIRONMENTAL RESEARCH,2023,236. |
| APA | Zhang, Yumeng,Wei, Di,Lv, Pengfei,Liu, Zhenkun,Cheng, Teng,&Wang, Bo.(2023).Fine particles removal of pyrolysis gasification flue gas from rural domestic waste: Laboratory research, molecular dynamics simulation, and applications.ENVIRONMENTAL RESEARCH,236. |
| MLA | Zhang, Yumeng,et al."Fine particles removal of pyrolysis gasification flue gas from rural domestic waste: Laboratory research, molecular dynamics simulation, and applications".ENVIRONMENTAL RESEARCH 236(2023). |
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