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Volume 1 Issue 3
Sep.  2014
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Cui-ling Wang, Chang-li Liu, Ya-jie Pang, et al. 2013: Adsorption Behavior of Hexavalent Chromium in Vadose Zone. Journal of Groundwater Science and Engineering, 1(3): 83-88.
Citation: Cui-ling Wang, Chang-li Liu, Ya-jie Pang, et al. 2013: Adsorption Behavior of Hexavalent Chromium in Vadose Zone. Journal of Groundwater Science and Engineering, 1(3): 83-88.

Adsorption Behavior of Hexavalent Chromium in Vadose Zone

  • Adsorption behavior of Cr (VI) in vadose zone, which is silty clay and clayey soil, was studied through kinetics experiments, isothermal adsorption experiments under various conditions, including different ph, temperature and organic contents. The results from kinetics experiments showed that the sorption progress of Cr (VI) has clear features in different stages, and adsorption equilibrium showed at 30 min, the adsorption rate of silty clay and clayey soil were 60%. The isothermal adsorption curve of Cr (VI) fitted closely with Freundlich equation model. When pH is 3-5 a plateau were seen, thereafter with increase in pH the adsorption rate of Cr (VI) dropped sharply and the minimum achieved at pH 10, the adsorption rate were only 35%. Adsorption rate of Cr (VI) increased gradually with the increase of temperature, the temperature of vadose zone is 14.7 ℃, according to the experimental results, the adsorption rate of Cr (VI) is about 40%. The use of organics represents an important contribution to the sorption of Cr (VI), sorption rate up to 100% when 30% of organic content. These studies will provide basis for manager to minimize the impacts, and provide basic data for pollution prevention and remediation of vadose zone.
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  • [1] Terrazas-Salvatierra Jhim, Munoz-Vásquez Galo, Romero-Jaldin Ana, 2020: Migration of total chromium and chloride anion in the Rocha River used for estimating degradation of agricultural soil quality at the Thiu Rancho zone, Journal of Groundwater Science and Engineering, 8, 223-229.  doi: 10.19637/j.cnki.2305-7068.2020.03.003
    [2] MIAO Qing-zhuang, ZHOU Xiao-ni, WANG Gui-ling, ZHANG Wei, LIU Feng, XING Lin-xiao, 2019: Research on changes of hydrodynamics and ion-exchange adsorption in Brackish-Water Interface, Journal of Groundwater Science and Engineering, 7, 94-105.
    [3] GUO Si-jia, GUO Gui-ping, 2018: Enhancement of gaseous mercury (Hg0) adsorption for the modified activated carbons by surface acid oxygen function groups, Journal of Groundwater Science and Engineering, 6, 104-114.
    [4] ZHANG Wei, SHI Jian-sheng, XU Jian-ming, LIU Ji-chao, DONG Qiu-yao, FAN Shu-xian, 2016: Dynamic influence of Holocene characteristics on vadose water in typical region of central North China Plain, Journal of Groundwater Science and Engineering, 4, 247-258.
    [5] GONG Xiao-ping, JIANG Guang-hui, CHEN Chang-jie, GUO Xiao-jiao, ZHANG Hua-sheng, 2015: Specific yield of phreatic variation zone in karst aquifer with the method of water level analysis, Journal of Groundwater Science and Engineering, 3, 192-201.
    [6] ZHOU Li-ling, CHENG Zhe, DUAN Lei, WANG Wen-ke, 2015: Distribution of groundwater salinity and formation mechanism of fresh groundwater in an arid desert transition zone, Journal of Groundwater Science and Engineering, 3, 268-279.
    [7] BAI Yu-chun, LI Yong-li, DONG Xue-liang, ZHAO Lei, 2014: Analysis and prevention measures for typical geological disasters formation and mechanisms within permafrost zone of Greater Khingan Range, Journal of Groundwater Science and Engineering, 2, 85-93.
    [8] ZHANG Zhi-qiang, LI Hong-chao, WANG Yu-qing, ZHANG li-ye, WANG Ying, 2014: Application of Visual MODFLOW to simulation of migration in Cr6+ contaminated site, Journal of Groundwater Science and Engineering, 2, 28-35.
    [9] GU Ming-xu, LIU Yu, HAN Chong, SHANG Lin-qun, JIANG Xian-qiao, WANG Lin-ying, 2014: Analysis of impact of outfalls on surrounding soil and groundwater environment, Journal of Groundwater Science and Engineering, 2, 54-60.
    [10] Jingli Shao, Yali Cui, Yunzhang Zhao, 2013: A Study on Infiltration and Groundwater Development in the Influent Zone of the Perched Lower Yellow River, Journal of Groundwater Science and Engineering, 1, 46-53.
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