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Experiment and Simulation on Adsorption of 3,5,6-Trichloro-2-Pyridinol in Typical Farmland of Purple Soil, Southwestern China
Lei, Wenjuan1,2; Zhou, Xiangyang3
2017
Source PublicationSOIL & SEDIMENT CONTAMINATION
ISSN1532-0383
Volume26Issue:4Pages:345-363
SubtypeArticle
AbstractThe adsorption behaviors of 3,5,6-trichloro-2-pyridinol (TCP) are explored by experiment and simulation on typical farmland of purple soil in southwestern China. Samples are collected from three farmlands with seasonal crop rotation of wheat-corn, rice-rape and vegetables respectively, and isothermal adsorption, breakthrough curves (BTCs) of packed and intact soil column experiments are tested. Adsorption parameters are also obtained by inversion simulation of appropriate model. The results reveal that the adsorption varies substantially in different farmlands and environmental conditions. Isothermal adsorption displays a decrease trend from the soil with crop of wheat-corn to rice-rape, then vegetables, and the main influencing factor is content of clay and silt. Langmuir model fits the isothermal adsorption best (R-2 = 0.99), and the estimated adsorption capacity (q(m)) of soil is 2.73, 1.19 and 0.55 mg/g, corresponding to the sample from farmland of wheat-corn, rice-rape and vegetable, respectively. However, the adsorbed amount by unit mass is almost the same in packed columns because of the incomplete interaction between TCP and soil, accounting for 0.59-3.24% of q(m). In intact soil columns, the adsorption on TCP decreases further, 0.13-1.15% of q(m). Thomas model fits TCP's adsorption well in packed soil columns (R-2 >= 0.97) but poorly in intact soil because of the preferential flow, and the fact that the more intensive the preferential flow, the poorer is the performance of the model.
KeywordIsothermal Adsorption Breakthrough Curve Simulation Purple Soil 3 5 6-trichloro-2-pyridinol
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1080/15320383.2017.1299687
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS KeywordPACKED-BED COLUMN ; HEXAVALENT CHROMIUM ; AQUEOUS PHOTOLYSIS ; ACTIVATED CARBON ; FOREST SOIL ; WASTE-WATER ; SORPTION ; CHLORPYRIFOS ; TRANSPORT ; DEGRADATION
Language英语
WOS SubjectEnvironmental Sciences
WOS IDWOS:000417652400001
Funding OrganizationChina Postdoctoral Science Foundation(NO2016M592671) ; Ministry of Science and Technology of China(2012CB417101)
PublisherTAYLOR & FRANCIS INC
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/20720
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorLei, Wenjuan
Affiliation1.Univ Sichuan, Coll Architecture & Environm, Chengdu 610065, Sichuan, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu, Sichuan, Peoples R China
3.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu, Sichuan, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Lei, Wenjuan,Zhou, Xiangyang. Experiment and Simulation on Adsorption of 3,5,6-Trichloro-2-Pyridinol in Typical Farmland of Purple Soil, Southwestern China[J]. SOIL & SEDIMENT CONTAMINATION,2017,26(4):345-363.
APA Lei, Wenjuan,&Zhou, Xiangyang.(2017).Experiment and Simulation on Adsorption of 3,5,6-Trichloro-2-Pyridinol in Typical Farmland of Purple Soil, Southwestern China.SOIL & SEDIMENT CONTAMINATION,26(4),345-363.
MLA Lei, Wenjuan,et al."Experiment and Simulation on Adsorption of 3,5,6-Trichloro-2-Pyridinol in Typical Farmland of Purple Soil, Southwestern China".SOIL & SEDIMENT CONTAMINATION 26.4(2017):345-363.
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