Transport behavior of humic acid-modified nano-hydroxyapatite in saturated packed column: Effects of Cu, ionic strength, and ionic composition
文献类型：期刊论文
| 作者 | Wang, Dengjun1,6; Chu, Lingyang1,2; Paradelo, Marcos3; Peijnenburg, Willie J. G. M.4,5; Wang, Yujun1; Zhou, Dongmei1 |
| 刊名 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| 出版日期 | 2011-08-15 |
| 卷号 | 360期号:2页码:398-407 |
| 关键词 | Nano-hydroxyapatite (nHAP) Humic acid (HA) Cu Ionic strength (IS) Ionic composition (IC) |
| ISSN号 | 0021-9797 |
| DOI | 10.1016/j.jcis.2011.04.064 |
| 通讯作者 | Zhou, Dongmei(dmzhou@issas.ac.cn) |
| 英文摘要 | The surfaces of nano-hydroxyapatite (nHAP) used for contaminated soil and groundwater remediation may be modified to render nHAP highly mobile in the subsurface. Humic acid (HA) is widely used to modify and stabilize colloid suspensions. In this work, column experiments were conducted to determine the effects of contaminant (e.g., Cu) concentration, ionic strength (IS), and ion composition (IC) on the transport behavior of HA-modified nHAP in saturated packed columns. IS and nature of the cation had strong effects on the deposition of nHAP, and the effect was greater for divalent than for monovalent cations. Divalent cations have a greater capacity to screen the surface charge of nHAP, and Ca(2+) bridges the HA-modified nHAP colloidal particles, which causes greater deposition. Moreover, Cu(2+) had a greater effect on the transport behavior than Ca(2+) due to their strong exchange with Ca(2+) of nHAP and its surface complexation with nHAP. The relative travel distance L(T), of the injected HA-modified nHAP colloids, ranges from less than one to several meters at varying Cu concentrations, ISs, and ICs in saturated packed columns. The results are crucial to evaluate the efficacy of nHAP on the remediation of contaminated soil and groundwater environments. (C) 2011 Elsevier Inc. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | NATURAL ORGANIC-MATTER ; FULLERENE C-60 NANOPARTICLES ; COLLOID FILTRATION THEORY ; POROUS-MEDIA ; AGGREGATION ; PARTICLES ; KINETICS ; SURFACE ; ADSORPTION ; DEPOSITION |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Physical |
| 语种 | 英语 |
| WOS记录号 | WOS:000292066100012 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2559041 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Zhou, Dongmei |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Soil Environm & Pollut Remediat, Inst Soil Sci, Nanjing 210008, Peoples R China 2.Anhui Agr Univ, Coll Resources & Environm Sci, Hefei 230036, Peoples R China 3.Univ Vigo, Soil Sci Grp, Dept Plant Biol & Soil Sci, Fac Sci, E-32004 Orense, Spain 4.Natl Inst Publ Hlth & Environm, Lab Ecol Risk Assessment, NL-3720 BA Bilthoven, Netherlands 5.Leiden Univ, Inst Environm Sci CML, NL-2300 RA Leiden, Netherlands 6.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Dengjun,Chu, Lingyang,Paradelo, Marcos,et al. Transport behavior of humic acid-modified nano-hydroxyapatite in saturated packed column: Effects of Cu, ionic strength, and ionic composition[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2011,360(2):398-407. |
| APA | Wang, Dengjun,Chu, Lingyang,Paradelo, Marcos,Peijnenburg, Willie J. G. M.,Wang, Yujun,&Zhou, Dongmei.(2011).Transport behavior of humic acid-modified nano-hydroxyapatite in saturated packed column: Effects of Cu, ionic strength, and ionic composition.JOURNAL OF COLLOID AND INTERFACE SCIENCE,360(2),398-407. |
| MLA | Wang, Dengjun,et al."Transport behavior of humic acid-modified nano-hydroxyapatite in saturated packed column: Effects of Cu, ionic strength, and ionic composition".JOURNAL OF COLLOID AND INTERFACE SCIENCE 360.2(2011):398-407. |
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来源：南京土壤研究所
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