bbk 000000

UDC 550.41+556.114

Boldyrev Kirill, KUZMIN V. V., KURANOV N. P.

The method of calculating heavy metal release from the layer of water body bottom deposits

Summary

The basics of the method of predicting heavy metal distribution between water and solid phases of bottom deposits in water bodies is outlined. Compared to other models of calculating heavy metal distribution between bottom deposits and void water the developed methodology takes into account the ongoing geochemical processes at the improved level with the use of advanced methods of geochemical modeling. An example of calculating heavy metal distribution under the conditions of the chemical composition of the solution changing with the use of advanced calculation methods in PhreeqC 2.18 program code is presented. The method can be used for the following tasks: geological mapping of the pollution of bottom deposits with heavy metals in water reservoirs and lakes; evaluation of the impact of bottom deposits on the chemical composition of water in water reservoirs and lakes; evaluation of the possible elimination of bottom deposits pollution or their immobilization and other measures of mitigating their impact on the water quality; evaluation of bottom deposits removal during dredging and also for solving the problem of their further utilization; evaluation of the possible instantaneous release of heavy metals from polluted bottom deposits and other emergency situations.

Key words

suspended substances , ion exchange , heavy metals , bottom deposits , geochemical thermodynamic sorption model , cation sorption

The further text is accessible on a paid subscription.
For authorisation enter the login/password.
Or subscribe

REFERENCES

1. Pivovarov S. A. Fiziko-khimicheskoe modelirovanie povedeniia tiazhelykh metallov (Si, Zn, Cd) v prirodnykh vodakh: kompleksy v rastvore, adsorbtsiia, ionnyi obmen, transportnye iavleniia [Physical and chemical modeling of heavy metal behavior (Сu, Zn, Cd) in natural water: complexes in solution, adsorption, ion exchange, transport phenomena. Ph. D. thesis in Chemistry. Moscow, MSU Publ., 2003, 137 p.].
2. Lipatnikova O. A. Eksperimental’noe issledovanie i termodinamicheskoe modelirovanie form nakhozhdeniia mikroelementov v donnykh otlozheniiakh Ivan’kovskogo vodokhranilishcha [Experimental study and thermodynamic modeling of microelement form occurrence in bottom deposits of the Invan’kovskoe water reservoir. Ph. D. thesis in Geological and Mineralogical Sciences. Moscow, 2011, 130 p.].
3. Shvarov Iu. V. [HCh: New possibilities of thermodynamic modeling of geochemical systems provided by Windows]. Geo­khimiia, 2008, no. 8, pp. 898–903. (In Russian).
4. Lipatnikova O. A. [Thermodynamic model of heavy metal behavior in eutrophicated deposits]. Proceedings of «Current state of the geosciences» International Conference dedicated to the memory of Viktor Efimovich Khain. Moscow, February, 1–4, 2011. (In Russian).
5. Sokolova O. V., Shestakova T. V., Grichuk D. V., Shvarov Iu. V. [Thermodynamic modeling of heavy metal occurrence in «water-bottom deposits» system under the conditions of autopollution]. Vestnik Moskovskogo Universiteta. Edition 4. Geologiia, 2006, no. 3, pp. 36–45. (In Russian).
6. Sokolova O. V. Eksperimental’noe issledovanie i termodinamicheskoe modelirovanie migratsii tiazhelykh metallov v sisteme «voda – donnye otlozheniia» v zone antropogennogo vozdeistviia [Experimental study and thermodynamic modeling of heavy metal migration in «water-bottom deposits» system in the anthropogenic impact zone. Ph. D. thesis in Geological and Mineralogical Sciences. Moscow, 2008, 188 p.].
7. Bezzaponnaia O. V. Prognoz soderzhaniia soedinenii tiazhelykh metallov v poverkhnostnykh vodnykh ob”ektakh [Prediction of heavy metal compounds concentration in surface water bodies. Ph. D. thesis in Engineering Science. Ekaterinburg, 2004, 162 p.].
8. Sozdanie metodologii eksperimental’nogo i naturnogo izucheniia protsessov akkumuliatsii i vynosa tiazhelykh metallov v donnykh otlozheniiakh vodokhranilishch i ozer [Development of the methodology of experimental and full-scale study of the processes of heavy metal accumulation and yield in bottom deposits of water bodies and lakes: Research and development report. Moscow, «DAR/VODGEO» CJSC, 2014].
9. Tessier A., Campbell H. G., Bisson M. Sequential extraction procedure for the speciation of particulate trace metals. Analytical Chemistry, 1979, v. 51, no. 7, pp. 844–851.
10. Parkhurst D. L., Appelo C. A. J. User’s guide to PhreeqC (version 2) – a computer program for speciation, batch-reaction, one-dimensional transport, and inverse geochemical calculations. Denver, Colorado, 1999.
11. Syrovetnik K. Long-term metal retention processes in a peat bog: field studies, data and modeling: Doctoral thesis. Stockholm, Sweden, Department of Chemical Engineering and Technology Royal Institute of Technology, 2005.