| Simultaneous elution of polycyclic aromatic hydrocarbons and heavy metalsfrom contaminated soil by two amino acids derived from β-cyclodextrins |
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| 引用本文： | Chengjian Yang,Qingru Zeng,Yunzhong Wang,Bohan Liao,Jian Sun,Hui Shi,Xingdou Chen. Simultaneous elution of polycyclic aromatic hydrocarbons and heavy metalsfrom contaminated soil by two amino acids derived from β-cyclodextrins[J]. 环境科学学报(英文版), 2010, 22(12): 1910-1915. DOI: 10.1016/S1001-0742(09)60338-7 |
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| 作者姓名： | Chengjian Yang Qingru Zeng Yunzhong Wang Bohan Liao Jian Sun Hui Shi Xingdou Chen |
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| 作者单位： | 1. School of Environment & Municipal Engineering, Xi’an Architecture Science Technology University, Xi’an 710055 , China.E-mail: yangchengjian09@163.com2. Department of Environmental Science, Hunan Agricultural University, Changsha 410128, China,2. Department of Environmental Science, Hunan Agricultural University, Changsha 410128, China,1. School of Environment & Municipal Engineering, Xi’an Architecture Science Technology University, Xi’an 710055 , China.,2. Department of Environmental Science, Hunan Agricultural University, Changsha 410128, China,3. Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, Department ofEnvironmental Science and Engineering, South China University of Technology, Guangzhou 510006, China,1. School of Environment & Municipal Engineering, Xi’an Architecture Science Technology University, Xi’an 710055 , China. and 1. School of Environment & Municipal Engineering, Xi’an Architecture Science Technology University, Xi’an 710055 , China. |
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| 基金项目： | This work was supported by the Public Foundationof National Environmental Protection Department (No.201009047) and Xi’an Science and Technology PlanProjects (No. CXY09025(3)). |
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| 摘 要： | Two highly water-soluble amino acids,which derived from β-CDs,i.e.,glutamic acid-β-cyclodextrin (GluCD) and ethylene-diamineβ-cyclodextrin (EDCD),were synthesized and were examined for their effect on solubilization of anthracene (ANT),complexation of cadmium (Cd2+),and elution removal of ANT and Cd2+ in soil.The results showed that GluCD and EDCD were powerful complexant for ANT and Cd2+.In the presence of 10 g/L GluCD and EDCD,the solubilization of ANT increased by 47.04 and 23.85 times compared to the control,respectively.GluCD resulted in approximately 90% complexation of Cd2+ while 70% complexation was observed for EDCD.Simultaneously,GluCD and EDCD could greatly enhance the elution removal of ANT and Cd 2+ from soil.GluCD resulted in the highest elution efficiency of ANT and Cd2+.With the addition of 10 g/L GluCD,53.5% of ANT and 85.6% of Cd2+ were eluted,respectively.The ANT had a negligible effect on the Cd2+ removal due to different complexing sites of ANT and Cd2+,while Cd2+ enhanced the ANT removal under the addition of GluCD because Cd2+ neutralized the-COOH group of GluCD.Adversely,the removal of ANT was decreased with Cd2+ under the addition of EDCD,this was due to the fact that Cd2+ enhanced the polarity of EDCD molecule and inhibited the complexation between ANT and EDCD.The study suggested that GluCD could be preferred and be successfully applied to remediation of heavy metals or organic compounds in contaminated soil.
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| 收稿时间： | 2010-01-23 |
| 修稿时间： | 2010-04-22 |
Simultaneous elution of polycyclic aromatic hydrocarbons and heavy metals from contaminated soil by two amino acids derived from beta-cyclodextrins |
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| Chengjian Yang,Qingru Zeng,Yunzhong Wang,Bohan Liao,Jian Sun,Hui Shi and Xingdou Chen. Simultaneous elution of polycyclic aromatic hydrocarbons and heavy metals from contaminated soil by two amino acids derived from beta-cyclodextrins[J]. Journal of environmental sciences (China), 2010, 22(12): 1910-1915. DOI: 10.1016/S1001-0742(09)60338-7 |
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| Authors: | Chengjian Yang Qingru Zeng Yunzhong Wang Bohan Liao Jian Sun Hui Shi Xingdou Chen |
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| Affiliation: | School of Environment & Municipal Engineering, Xi'an Architecture Science Technology University, Xi'an 710055, China. yangchengjian09@163.com |
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| Abstract: | Two highly water-soluble amino acids,which derived from β-CDs,i.e.,glutamic acid-β-cyclodextrin (GluCD) and ethylene-diamine-β-cyclodextrin (EDCD),were synthesized and were examined for their effect on solubilization of anthracene (ANT),complexation of cadmium (Cd2+),and elution removal of ANT and Cd2+ in soil.The results showed that GluCD and EDCD were powerful complexant for ANT and Cd2+.In the presence of 10 g/L GluCD and EDCD,the solubilization of ANT increased by 47.04 and 23.85 times compared to the control,respectively.GluCD resulted in approximately 90% complexation of Cd2+ while 70% complexation was observed for EDCD.Simultaneously,GIuCD and EDCD could greatly enhance the elution removal of ANT and Cd2+ from soil.GluCD resulted in the highest elution efficiency of ANT and Cd2+.With the addition of 10 g/L GluCD,53.5% of ANT and 85.6% of Cd2+ were eluted,respectively.The ANT had a negligible effect on the Cd2+ removal due to different complexing sites of ANT and Cd2+,while Cd2+ enhanced the ANT removal under the addition of GIuCD because Cd2+ neutralized the -COOH group of GIuCD.Adversely,the removal of ANT was decreased with Cd2+ under the addition of EDCD,this was due to the fact that Cd2+ enhanced the polarity of EDCD molecule and inhibited the complexation between ANT and EDCD.The study suggested that GluCD could be preferred and be successfully applied to remediation of heavy metals or organic compounds in contaminated soil. |
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| Keywords: | anthracene cadmium cyclodextrin solubilization elution soil |
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