The Migration Law of Iron during the Process of Water Icing
| Autor: | Yan Zhang, Wanli Zhao, Tongshuai Liu, Yuanqing Tang, Yucan Liu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
distribution coefficient “k”
lcsh:TD201-500 lcsh:Hydraulic engineering simulated icing Ecological environment Geography Planning and Development solid–liquid equilibrium theory Aquatic Science migration law Biochemistry Solvent Partition coefficient iron lcsh:Water supply for domestic and industrial purposes lcsh:TC1-978 Scientific method Environmental chemistry Environmental science Solubility human activities Water Science and Technology Icing |
| Zdroj: | Water, Vol 12, Iss 2, p 441 (2020) Water Volume 12 Issue 2 |
| ISSN: | 2073-4441 |
| DOI: | 10.3390/w12020441 |
| Popis: | In this study, we utilized simulated icing experiments to investigate the effect of icing thickness, freezing temperature and initial concentration on the migration of iron in the ice&ndash water system during water icing. The distribution coefficient &ldquo K&rdquo (the ratio of the average concentration of iron in the ice to that in the under-ice water) was used to describe the effect. The results indicated that iron partitioned stronger to under-ice water than to ice during the process of water icing, resulting in the concentration of iron in ice&ndash water system before and after freezing being expressed as: ice < pre-freezing water < under-ice water. K decreased with the increase in icing thickness, freezing temperature and initial concentration. The temperature change in the solution will change the solubility of the solvent, so we explained the migration of iron during the process of water icing from the perspective of solid&ndash liquid equilibrium theory. Too high or too low iron concentration may inhibit the growth of algae, thus affecting the underwater ecological environment. We expect that our study will arouse researcher&rsquo s attention to the change in iron concentration in shallow lakes and ponds at high latitudes during the icebound period. |
| Databáze: | OpenAIRE |
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