Hch removal in a biochar-amended biofilter
Amirbekov A. Mamirova A. Sevcu A. Spanek R. Hrabak P.
December-1 2021MDPI
Water (Switzerland)
2021#13Issue 23
This study evaluated the efficiency of two biofilter systems, with and without biochar chambers installed, at degrading and removing HCH and its isomers in natural drainage water. The biochar biofilter proved to be 96% efficient at cleaning HCH and its transformation products from drainage water, a significant improvement over classic biofilter that remove, on average, 68% of HCH. Although iron-and sulfur-oxidizing bacteria, such as Gallionella and Sulfuricurvum, were dominant in the biochar bed outflows, they were absent in sediments, which were rich in Simplicispira, Rhodoluna, Rhodoferax, and Flavobacterium. The presence of functional genes involved in the biodegradation of HCH isomers and their byproducts was confirmed in both systems. The high effectiveness of the biochar biofilter displayed in this study should further encourage the use of biochar in water treatment solutions, e.g., for temporary water purification installations during the construction of other long-term wastewater treatment technologies, or even as final solutions at contaminated sites.
Biochar , Biodegradation , Constructed wetlands , Lindane , Microbial communities hexachlorocyclohexane
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Department of Applied Biology, Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Bendlova 7, Liberec, 460 01, Czech Republic
Faculty of Mechatronics, Informatics and Interdisciplinary Studies, Technical University of Liberec, Liberec, 461 17, Czech Republic
Institute of Genetics and Physiology, SC MES RK, Al-Farabi 93, Almaty, 050060, Kazakhstan
Department of Chemistry, Faculty of Science, Humanities and Education, Technical University of Liberec, Studentska 1402/2, Liberec, 461 17, Czech Republic
Department of Applied Biology
Faculty of Mechatronics
Institute of Genetics and Physiology
Department of Chemistry
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