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ORGANIC SUBSTANCES IN WOODCHIP AQUEOUS LEACHATES AND THEIR ECOTOXICITY
Abstract
Woodchip material is one of the most promising fill media for denitrifying bioreactors. Woodchip denitrifying bioreactors are used for nitrate reduction in the outlets of drainage systems, shallow groundwaters, etc. Despite their overall positive effect, undesirable leaching of organic compounds from the fill medium can occur during a bioreactor?s start-up phase. The released organic compounds can cause oxygen depletion and some of them can have a toxic effect on biota. The paper presents the quality of leachates of five wood-based materials which can be used as denitrifying bioreactor media, i.e. oak, poplar, beech, spruce, and a mixture of pine+larch. The leachates were prepared on a rotating shaker. The quality of the leachates varied according to the wood species both in their physicochemical parameters ? pH, dissolved oxygen (DO), oxidation-reduction potential (ORP), chemical oxygen demand (COD), biochemical oxygen demand (BOD), dissolved organic carbon (DOC), phenolic compounds, and in their toxicity. Oak showed the highest leachability of organic compounds (COD 3,370 mg/L, BOD 750 mg/L, DOC 1,435 mg/L), followed by spruce (COD 1,930 mg/L, BOD 570 mg/L, DOC 770 mg/L). The leachability of organics from poplar and beech was similar and reached medium values, while the leachate of pine+larch contained the lowest concentration of organic compounds. Overall leachability of organic substances corresponded with the leachability of low-molecular phenolic compounds. In the leachates of oak and spruce phenol, o-, m-, and p-cresol, thymol, p-ethylphenol, and p-valerylphenol were found. The chemical composition of leachates led to expected toxicity levels. The highest toxicities were determined for oak and spruce leachates with a sensitive response from both test organisms, Sinapis alba and Thamnocephalus platyurus. The leachates of poplar and beech showed moderate toxicity for crustaceans, while for higher plants they were non-toxic. The leachate of pine+larch was non-toxic for both test organisms.
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References15
Schipper L. A., Robertson W. D., Gold A. J., Jaynes D. B. & Cameron S. C. Denitrifying bioreactors – An approach for reducing nitrate loads to receiving waters, Ecological Engineering, vol. 36/issue 11, pp 1532–1543, 2010.
Taylor B.R., Goudey J.S. & Carmichael N.B. Toxicity of aspen wood leachate to aquatic life: laboratory studies, Environmental Toxicology and Chemistry, vol. 15/ issue 2, pp 150–159, 1996.
Svensson H., Marques M., Kaczala F. & Hogland W. Leaching patterns from wood of different tree species and environmental implications related to wood storage areas, Water and Environmental Journal, vol. 228, pp 277–284, 2014.
Samis S.C., Liu S.D., Wernick B.G. & Nassichuck M.D. Mitigation of fisheries impacts from the use and disposal of wood residue in British Columbia and the Yukon. Canadian Technical Report of Fisheries and Aquatic Sciences 2296, Canada, pp 91–49, 1999.
World Health Organization. Health and Safety Guide No. 100: Cresols health and safety guide [Online], International Programme on Chemical Safety, 1996. Available at: http://apps.who.int/iris/bitstream/handle/10665/38142/9241511001_eng.pdf [2018-03-20].
Pitter P. Hydrochemie, VŠCHT v Praze, Czech Republic, pp 455–459, 2015.
Michałowicz J. & Duda W. Phenols – Sources and toxicity, Polish Journal of Environmental Studies, vol. 16/issue 3, pp 347–362, 2007.
Marchese A., Orhan I. E., Daglia M., Barbieri R., Di Lorenzo A., Nabavi S.F., Grotzi O., Izadi M. & Nabavi S.M. Antibacterial and antifungal activities of thymol: A brief review of the literature, Food Chemistry, vol. 210, pp 402–414, 2016.
Makris S.P. & Banerjee S. Fate of resin acids in pulp mill secondary treatment systems, Water Research, vol. 36/issue 11, pp 2878–2882, 2002.
U.S. Department of Health and Human Services. Toxicological profile for cresols [Online], U.S.A., 2008. Available at: https://www.atsdr.cdc.gov/toxprofiles/tp34.pdf [2018-04-10].
U.S. Environmental Protection Agency. ECOTOX Knowledgebase [Online], U.S.A., 2018. Available at: https://cfpub.epa.gov/ecotox/ [2018-03-25].
Kahru A., Põllumaa L., Reiman R., Rätsep A., Lüders M. & Maloveryan A. The toxicity and biodegradability of eight main phenolic compounds characteristic to the oil-shale industry wastewaters: A test battery approach, Environmental Toxicology, vol. 15/ issue 5, pp 431–442, 2000.
Ministry of the Environment of the Czech Republic (MŽP). Metodický pokyn odboru odpadů ke stanovení ekotoxicity odpadů, Věstník MŽP, ročník XVII, částka 4/2007, Czech Republic, 2007.
MicroBio Tests Inc. THAMNOTOXKIT F Crustacean Toxicity Screening Test for Freshwater: Standard operational procedure [Online], Belgium, 2015. Available at: http://www.microbiotests.be/SOPs/Thamnotoxkit%20F%20SOP%20-%20A5.pdf
Newman M.C. Fundamentals of Ecotoxicology: The Science of Pollution, 4th edition, CRC Press, 2014.
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