Feasibility study on enhancing the biodegradability of fresh and old landfill leachate using combined chemical precipitation and Fenton processes
مقاله انگلیسی 2026
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Feasibility study on enhancing the biodegradability of fresh and old landfill leachate using combined chemical precipitation and Fenton processes |
Title |
| Rasolevandi, T., Naddafi, K., Hassanvand, M.S., Hadi, M., Alimohammadi, M., Yaghmaeian, K | Author(s) |
| 2026 (2026-12-1)/Original Article | Type/Published |
| Scientific Reports, 16(1) | Journal |
| Landfill leachate (LL), due to its high concentrations of heavy metals, ammonia nitrogen (NH₃-N), and persistent organic compounds, requires effective pretreatment before biological treatment. This study evaluated a three-stage approach—chemical precipitation with lime, ammonia stripping, and Fenton oxidation—for fresh and old leachate from the Aradkooh Waste Processing Complex in Tehran. Lime dosages of 9 g/L for fresh and 18 g/L for old leachate were determined from preliminary experiments.; these values were selected due to their favorable performance in reducing heavy metals and NH₃-N. Arsenic showed the highest removal efficiency (93% in fresh leachate, 66% in old), while NH₃-N removal reached 93% in both. The Fenton process was optimized using a Box–Behnken design (BBD) and response surface methodology | Abstract |
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