孔隙空间对聚苯乙烯胶体滞留与释放的影响

袁瑞强; 张文新; 王鹏; 王仕琴

doi:10.13870/j.cnki.stbcxb.2018.04.054

您当前的位置：

首页 >

文章列表页 >

孔隙空间对聚苯乙烯胶体滞留与释放的影响

更新时间：2025-03-12

- 孔隙空间对聚苯乙烯胶体滞留与释放的影响
- Impacts of Pore Scale on Retention and Release of Polystyrene Colloid
- 水土保持学报 2018年32卷第4期页码：339-345
- 作者机构：
  
  1. 山西大学环境与资源学院,太原,030006
  2. 山西大学资源与环境工程研究所,太原,030006
  3. 江西师范大学鄱阳湖湿地与流域研究教育部重点实验室,南昌,330022
  4. 中国科学院遗传所农业资源研究中心, 中国科学院农业资源重点实验室, 河北省节水农业重点实验室,石家庄,050021
- 作者简介：
  
  [ "袁瑞强(1980-),男,山西太原人,副教授,主要从事流域水循环、水环境与水资源方面的研究。E-mail:rqyuan@sxu.edu.cn" ]
- 基金信息：
  
  国家自然科学基金项目（41301033）
- DOI：10.13870/j.cnki.stbcxb.2018.04.054
  中图分类号：
- 纸质出版：2018
- 稿件说明：
移动端阅览
袁瑞强, 张文新, 王鹏, 等. 孔隙空间对聚苯乙烯胶体滞留与释放的影响[J]. 水土保持学报, 2018,32(4):339-345.

YUAN Ruiqiang, ZHANG Wenxin, WANG Peng, et al. Impacts of Pore Scale on Retention and Release of Polystyrene Colloid[J]. 2018, 32(4): 339-345.
袁瑞强, 张文新, 王鹏, 等. 孔隙空间对聚苯乙烯胶体滞留与释放的影响[J]. 水土保持学报, 2018,32(4):339-345. DOI： 10.13870/j.cnki.stbcxb.2018.04.054.

YUAN Ruiqiang, ZHANG Wenxin, WANG Peng, et al. Impacts of Pore Scale on Retention and Release of Polystyrene Colloid[J]. 2018, 32(4): 339-345. DOI： 10.13870/j.cnki.stbcxb.2018.04.054.

摘要

为加深孔隙空间对胶体运移影响的认识，在不同pH与离子强度下，研究了胶体在经酸洗或水洗后的玻璃珠或石英砂中的迁移行为。结果表明：粒径相同的玻璃珠与石英砂（0.45~0.60 mm）相比，形状一致的玻璃珠形成的孔隙空间（孔隙率0.38）小于石英砂（0.45）。酸洗与水洗后的玻璃珠表面成分变化不大（0~0.6%），经酸洗的介质后能提供更多有利吸附位点。在高pH （10）环境下，石英砂经酸洗或水洗后，胶体滞留量增大（72.1%和69.2%）。提高溶液pH到10后出现的胶体吸附增加，是颗粒接触点、非流动区或低流速区和涡流区滞留等孔隙空间滞留机制引起的，用DLVO理论无法解释。在离子强度为0.001 mol/L或0.05 mol/L环境下，酸洗石英砂中胶体滞留量比酸洗玻璃珠的分别高16.3%和28.0%，表明介质孔隙空间增大可加强颗粒接触点、非流动区或低流速区和涡流区滞留，然而优先流能够削弱孔隙空间滞留机制对胶体的滞留。此外，超纯水解吸时仅使少量胶体（<3.9%）从玻璃珠与石英砂介质的孔隙涡流区中解吸出来，表明涡流区对胶体的保留不是胶体滞留在介质中的主要机制。

Abstract

In order to understand about the impact of pore scale on colloid migration more deep

migration processes of colloid in acid-washed glass beads/quartz

Milli-Q-washed glass beads/quartz were compared under different pH and ionic strength. Results showed that the pore scale of glass beads with the same shape (porosity 0.38) was smaller than that of quartz sand with various shapes (porosity 0.45)

although the glass beads and quartz sand had a uniform particle size (0.45~0.60 mm). The surface components of glass beads changed at a very small range from 0 to 0.6% after acid washing and Milli-Q washing. The acid-washed media could provide more favorable adsorption sites. The colloid retention of quartz sand increased after the acid washing or Milli-Q washing(72.1% and 69.2%

respectively) when the pH of the solution raised to 10. The enhancement of adsorption was induced by pore scale retention mechanism

such as retention in particle contact points

non-flowing area or low velocity area and eddy current area

which could not be explained by the DLVO theory. The retention of colloid in the acid-washed quartz sand was about 16.3% and 28.0% higher than that of the acid-washed glass beads under the environments of ion strength of 0.001 mol/L and 0.05 mol/L

respectively

which implied that increased pore scale enhanced colloid retention in particle contact points

non-flowing area or low velocity area and eddy current area. However

occurrence of preferential flow in soil columns impaired the retention of colloid in pores greatly. In addition

only a small parts of colloids (<3.9%) was desorbed from eddy zones in the glass beads and the quartz sand after using ultra-pure water

indicating that the colloid retention in the eddy zones wasn't the dominant mechanism.

关键词

Keywords

references

Baalousha M, Lead J R, Ju-Nam Y. 3.05-Natural colloids and manufactured nanoparticles in aquatic and terrestrial systems[J].Treatise on Water Science,2011,88(6):89-129.

Stevik T K, Aa K, Ausland G, et al. Retention and removal of pathogenic bacteria in wastewater percolating through porous media:A review[J].Water Research,2004,38(6):1355-1367.

Smith J, Gao B, Funabashi H, et al. Pore-scale quantification of colloid transport in saturated porous media[J].Environmental Science and Technology,2008,42(2):517-523.

Keller A A, Auset M. A review of visualization techniques of biocolloid transport processes at the pore scale under saturated and unsaturated conditions[J].Advances in Water Resources,2007,30(6):1392-1407.

Davis A M J, O'Neill M E. Separation in a slow linear shear flow past a cylinder and a plane[J].Journal of Fluid Mechanics,1977,81(3):551-564.

Torkzaban S, Tazehkand S S, Walker S L, et al. Transport and fate of bacteria in porous media:Coupled effects of chemical conditions and pore space geometry[J].Water Resources Research,2008,44(4):159-172.

Morales V, Perezreche F, Holzner M, et al. Evaluation of colloid retention site dominance in variably saturated porous media:An all pores pore-scale analysis//EGU General Assembly Conference. EGU General Assembly Conference Abstracts, 2016:18.

Xiqing L, Chenluh L, And J D M, et al. Pore-scale observation of microsphere deposition at grain-to-grain contacts over assemblage-scale porous media domains using X-ray microtomography[J].Environmental Science and Technology,2006,40(12):3762-3768.

Molnar I L, Sanematsu P C, Gerhard J I, et al. Quantified pore-scale nanoparticle transport in porous media and the implications for colloid filtration Theory[J].Langmuir the Acs Journal of Surfaces and Colloids,2016,32(31):7841-7853.

Saeed T, Scott A B, Walker S L. Resolving the coupled effects of hydrodynamics and DLVO forces on colloid attachment in porous media[J].Langmuir the Acs Journal of Surfaces and Colloids,2007,23(19):9652-9660.

Bradford S A, Simunek J, Bettahar M, et al. Straining of colloids at textural interfaces[J].Water Resources Research,2005,41(10):3053-3057.

Gaillard J F, Chen C, Stonedahl S H, et al. Imaging of colloidal deposits in granular porous media by X-ray difference micro-tomography[J].Geophysical Research Letters,2007,34(18):265-272.

Maria A, Keller A. Pore-scale processes that control dispersion of colloids in saturated porous media[J].Water Resources Research,2004,40(3):114-125.

Johnson W P, Li X, Yal G. Colloid retention in porous media:Mechanistic confirmation of wedging and retention in zones of flow stagnation[J].Environmental Science and Technology,2007,41(4):1279-1287.

Fan D. Three-dimensional pore-scale visualization and trajectory analysis of colloid transport and retention in saturated porous media.Newark:University of Delaware,2009.

Bradford S A, Torkzaban S, Leij F, et al. Modeling the coupled effects of pore space geometry and velocity on colloid transport and retention[J].Water Resources Research,2009,45:142-143.

Passmore J M, Rudolph D L, Mesquita M M F, et al. The utility of microspheres as surrogates for the transport of E. coli RS2g in partially saturated agricultural soil[J]. Water Research,2010,44(4):1235-1245.

Zhuang J, Qi J, Jin Y. Retention and transport of amphiphilic colloids under unsaturated flow conditions:Effect of particle size and surface property[J]. Environmental Science and Technology,2005,39(20):7853-7859.

袁瑞强,郭威,王鹏,等.高pH环境对胶体在饱和多孔介质中迁移的影响[J].中国环境科学,2017,37(9):3392-3398.

Hogg R, Healy T W, Fuerstenau D W. Mutual coagulation of colloidal dispersions[J].Transactions of the Fataday Society,1966,62:1638-1651.

Gregory J. Approximate expressions for retarded van der waals interaction[J].Journal of Colloid and Interface Science,1981,83(1):138-145.

Ruckenstein E, Prieve D C. Adsorption and desorption of particles and their chromatographic separation[J].Aiche Journal,2010,22(2):276-283.

Tufenkji N, Elimelech M. Deviation from the classical colloid filtration theory in the presence of repulsive DLVO interactions[J].Langmuir,2004,20(25):10818-10828.

袁瑞强,郭威,王鹏,等.多孔介质表面化学异质性对胶体运移的影响[J].环境科学学报,2017,37(9):3498-3504.

Torkzaban S, Wan J, Tokunaga T K, et al. Impacts of bridging complexation on the transport of surface-modified nanoparticles in saturated sand[J]. Journal of Contaminant Hydrology,2012,136/137(5):86-95.

袁瑞强,郭威,王仕琴,等.微生物在饱和多孔介质中的迁移[J].水资源研究,2016,5(4):334-349.

Torkzaban S, Bradford S A. Critical role of surface roughness on colloid retention and release in porous media[J]. Water Research,2016,88:274-284.

浏览量

1197

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

猪粪堆肥中水分散性胶体的重金属分布研究

浓度与pH互作下表没食子儿茶素没食子酸脂（EGCG）对黄壤Al、Fe、Mn迁移的影响

黄土丘陵区林地干化土壤降雨入渗及水分迁移规律

连续施用有机肥对菜田土壤Cu和Zn积累及辣椒产量品质的影响