Equilibrium-kinetic modeling allows investigating metal behavior in the water–rock-organic matter system with time to evaluate anthropogenic effects on the environment. In the article, the interactions of stagnant mine drainage water of the flooded mine “Arsenic” with ore and gangue minerals were simulated using different organic matter incorporation approaches. If the model is closed to humic substances (no additional organic matter input), most fulvic acids are bound in the Fe fulvate complex. While under the removal of Fe fulvate from the model, the Cu fulvate becomes prevalent, the contribution of the fulvate complexes with Zn, Mg, and Ca also increases. This scenario simulates the organo-mineral complexes behavior well and allows identifying the sequence of metal binding to organic ligands as follows Fe?>?Cu?>?Zn?>?Mg?>?Ca. The second scenario imitates the constant input of organic matter to the model (open system regarding humic substances). The dissolved metal concentrations in the model solution are extremely high in comparison to the mine drainage water. This scenario demonstrates that excessive input of organic matter leads to the accumulation of the metals in a dissolved form and blocks the secondary mineral formation despite the faster dissolution of the primary minerals under a more acidic pH than in the first scenario. However, despite the differences between the model solution and the mine drainage water, this scenario is useful to address specific issues associated with changes in natural and anthropogenic conditions. Both scenarios show the importance of organic matter incorporation to the equilibrium-kinetic models.
相似文献 |
|||||||
|
|||||||
|
排序方式： 共有5条查询结果，搜索用时 15 毫秒
1
1.
2.
Cherkasova Elena V. Konyshev Artem A. Soldatova Evgeniya A. Sidkina Evgeniya S. Mironenko Mikhail V. 《Aquatic Geochemistry》2021,27(2):141-158
3.
The results of investigations of the alteration in river ice regime associated with the global climate warming are presented. It is shown that a simple model based on the relationship between the dates of ice phenomena and the average air temperature for the preceding month can be used for the assessment of probable changes in ice phenomena at various scenarios of the future climate. It is found that as a rule, the allowance made for the rate of streamflow in autumn does not improve the assessment of the probable dates of river freeze-up, whereas the model of the process of river breakup allows improving the estimates of the relevant shifts in the dates. 相似文献
4.
Soldatova E. A. Savichev O. G. Zhou D. Ivanova I. S. Li J. Dong Y. Sun Z. 《Water Resources》2022,49(3):483-492
Water Resources - Data of studies of 2013–2019 were used to assess the current environmental-geochemical conditions of surface water and groundwater in the basin of the Ganjiang River, the... 相似文献
5.
O.B Pereladova K Bahloul A.J Sempéré N.V Soldatova U.M Schadilov V.E Prisiadznuk 《Journal of Arid Environments》1998,39(4):577-591
A population of goitred gazelles (Gazella subgutturosa subgutturosaGüldenstaedt, 1780) has been created and maintained in the Bukhara Breeding Centre, Uzbekistan since 1977. Population dynamics and range usage have been analysed for the period from 1978 to 1995. In 1989 the population in 5126 ha of the reserve peaked at 1224; in 1995 it was 580. Breeding success was correlated with meteorological conditions and was density-dependent. Changes of plant associations, connected with the gazelles population growth, are discussed. 相似文献
1
|
| 设为首页 | 免责声明 | 关于勤云 | 加入收藏 |
|
Copyright©北京勤云科技发展有限公司 京ICP备09084417号 |