Institutional Repository of Coll Energy & Power Engn
Effects of superabsorbent polymers on the vertical infiltration of soil water with sand mulching | |
Zhao, Wenju![]() ![]() | |
2019-12 | |
发表期刊 | ENVIRONMENTAL EARTH SCIENCES
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ISSN | 1866-6280 |
卷号 | 78期号:23 |
摘要 | Superabsorbent polymer (SAP) is a kind of polymer with advantages like high water absorption and conservation. We studied the effect of various concentrations of SAPs on the infiltration of soil water with sand mulching. Five soil columns with surface sand mulch and evenly distributed SAPs at concentrations of 0, 0.1, 0.2, 0.5 and 1.0% were tested. The SAPs slowed the migration of the wetting front and thus the rate of infiltration of water, and the higher the SAP concentration, the slower the migration. The relationship between the wetting front displacement and time could be described by a logarithmic function, Z f = atb. The amount of cumulative infiltration was inversely proportional to the amount of SAPs. The final cumulative infiltration was proportional to the amount of SAPs, within a limited range. The relationship between cumulative infiltration and time was described by a power function, I = ctd. The relationship between wetting front displacement and cumulative infiltration could be characterized by a linear equation, I = KZ f + E, indicating that the rate of cumulative infiltration increased with the amount of SAPs for the same infiltration depth, which satisfied the Kostiakov model ( i = Bt-A). High concentrations of SAPs strongly inhibited the infiltration of water. The infiltration rate of soil water was optimal at a SAP concentration of 0.2%, which effectively increased the amount of water in the soil. |
关键词 | Sand Superabsorbent polymers Wetting front Infiltration Kostiakov model |
DOI | 10.1007/s12665-019-8665-6 |
收录类别 | SCI ; SCIE |
语种 | 英语 |
资助项目 | National Natural Science Foundation of China[51869010] ; Guidance Program for Industrial Support of Colleges and Universities in Gansu Province[2019C-13] |
WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
WOS记录号 | WOS:000496513500001 |
出版者 | SPRINGER |
EI入藏号 | 20194707708043 |
EI主题词 | Infiltration |
EI分类号 | 483.1 Soils and Soil Mechanics - 802.3 Chemical Operations - 815.1 Polymeric Materials |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/64171 |
专题 | 能源与动力工程学院 |
通讯作者 | Zhao, Wenju |
作者单位 | Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou, Gansu, Peoples R China |
第一作者单位 | 能源与动力工程学院 |
通讯作者单位 | 能源与动力工程学院 |
第一作者的第一单位 | 能源与动力工程学院 |
推荐引用方式 GB/T 7714 | Zhao, Wenju,Hu, Jiazhen,Cui, Zhen,et al. Effects of superabsorbent polymers on the vertical infiltration of soil water with sand mulching[J]. ENVIRONMENTAL EARTH SCIENCES,2019,78(23). |
APA | Zhao, Wenju,Hu, Jiazhen,Cui, Zhen,Dou, Pinxin,&Fan, Yanwei.(2019).Effects of superabsorbent polymers on the vertical infiltration of soil water with sand mulching.ENVIRONMENTAL EARTH SCIENCES,78(23). |
MLA | Zhao, Wenju,et al."Effects of superabsorbent polymers on the vertical infiltration of soil water with sand mulching".ENVIRONMENTAL EARTH SCIENCES 78.23(2019). |
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