Unwanted metals and hydrophobic contaminants in bioreactor effluents are associated with the presence of humic substances
| Autor: | Patrick Drogui, Mehdi Zolfaghari, Rino Dubé, Gerardo Buelna, Satinder Kaur Brar |
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| Rok vydání: | 2016 |
| Předmět: |
Suspended solids
Chemistry chemistry.chemical_element 02 engineering and technology 010501 environmental sciences 021001 nanoscience & nanotechnology Membrane bioreactor 01 natural sciences Environmental chemistry Dissolved organic carbon Bioreactor Environmental Chemistry Nitrification Leachate 0210 nano-technology Effluent Arsenic 0105 earth and related environmental sciences |
| Zdroj: | Environmental Chemistry Letters. 15:489-494 |
| ISSN: | 1610-3661 1610-3653 |
| DOI: | 10.1007/s10311-016-0598-7 |
| Popis: | Biological treatment of landfill leachate is challenging due to the presence of complex compounds. Here, we treated an old landfill leachate using a membrane bioreactor under the following conditions: 24 h for hydraulic retention, 65 days of sludge retention and an average organic load rate of 1.71 ± 0.16 g/L/day. We observed a high removal of ammonia, phosphorous and some metals. However, removal of organic carbon was incomplete. Despite a major removal of suspended solids, hydrophobic and volatile hydrophilic compounds, high concentration of fulvic acid and hydrophilic contaminants was found in the effluent. Overally, we demonstrate that the presence of humic substances in the effluent is associated with the detection of arsenic, copper and chromium and di(2-ethylhexyl) phthalate. |
| Databáze: | OpenAIRE |
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