Effects of superabsorbent polymers on the vertical infiltration of soil water with sand mulching
Zhao, Wenju; Hu, Jiazhen; Cui, Zhen; Dou, Pinxin; Fan, Yanwei
2019-12
Source PublicationENVIRONMENTAL EARTH SCIENCES
ISSN1866-6280
Volume78Issue:23
AbstractSuperabsorbent 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.
KeywordSand Superabsorbent polymers Wetting front Infiltration Kostiakov model
DOI10.1007/s12665-019-8665-6
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51869010] ; Guidance Program for Industrial Support of Colleges and Universities in Gansu Province[2019C-13]
WOS Research AreaEnvironmental Sciences & Ecology ; Geology ; Water Resources
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000496513500001
PublisherSPRINGER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/64171
Collection能源与动力工程学院
Corresponding AuthorZhao, Wenju
AffiliationLanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou, Gansu, Peoples R China
First Author AffilicationColl Energy & Power Engn
Corresponding Author AffilicationColl Energy & Power Engn
First Signature AffilicationColl Energy & Power Engn
Recommended Citation
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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