Investigation of materials for reactive permeable barrier in removing cadmium and chromium(VI) from aquifer near a solid
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RESEARCH ARTICLE
Investigation of materials for reactive permeable barrier in removing cadmium and chromium(VI) from aquifer near a solid domestic waste landfill Alexey Safonov 1 & Nadezhda Popova 1 & Natalia Andrushenko 1 & Kirill Boldyrev 2 & Nikita Yushin 3 & Inga Zinicovscaia 3,4 Received: 7 June 2020 / Accepted: 6 September 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract The sorption characteristics of raw and biofilm-coated materials: vermiculite, lightweight expanded clay aggregate (LECA), perlite, zeolite, and shungite toward Cd and Cr(VI) ions were investigated to evaluate the possibility of their use as filtration barrier in the aquifer near a solid domestic waste landfill. The effectiveness of Cr(VI) removal by the raw materials changed in the following order: shungite > zeolite > perlite > vermiculite > LECA and for Cd: zeolite > shungite > vermiculite > perlite > LECA. After biofilm formation on the surface of the materials, the sorption capacity increased in some (perlite, LECA), while in others (zeolite) it was reduced. Four kinetic models were used to describe the experimental data. Mechanisms of metal removal were proposed: for Cr(VI), a characteristic combination of sorption processes was suggested, while the removal of Cd ions could occur by ion exchange and by complexation on the surface of the sorbent. Cr(VI) reduction by living bacterial cells forming a biofilm on the sorbent surface was assessed. Keywords Waste landfills . Sorption natural materials . Cadmium . Chromate . Microbial biofilms . Bioreduction . Permeable reactive barrier . Geochemical modeling
Responsible editor: Ioannis A. Katsoyiannis Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11356-020-10743-x) contains supplementary material, which is available to authorized users. * Inga Zinicovscaia [email protected] Alexey Safonov [email protected]
1
Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky Avenue, 31, 4, Moscow, Russia 119071
2
Nuclear Safety Institute, Russian Academy of Sciences, Bolshaya Tulskaya Street, 52, Moscow, Russia 115191
3
Joint Institute for Nuclear Research, Joliot-Curie Str., 6, Dubna, Russia 1419890
4
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, 30 Reactorului Str. MG-6, Bucharest -, Magurele, Romania
Nadezhda Popova [email protected] Natalia Andrushenko [email protected] Kirill Boldyrev [email protected] Nikita Yushin [email protected]
Environ Sci Pollut Res
Introduction Solid domestic waste landfills (SDW) contain a wide range of pollutants, which contribute to an increase in the migration activity of metals in the form of complex compounds. Migration of these pollutants in the underground space can lead to pollution of the nearest aquifer. For remediation of the municipal solid waste landfills (MSWLF), which has been receiving waste for a long period of time, several specific actions were developed. However, actions for
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