Assessment of Converter Sludge from Esfahan Steel Company as a Persulfate Nano-Activator for Permeable Reactive Barriers (Prbs) in Landfill Leachate Treatment | ||
| Pollution | ||
| مقاله 15، دوره 5، شماره 2، تابستان 2019، صفحه 395-409 اصل مقاله (1.14 M) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/poll.2018.258975.449 | ||
| نویسندگان | ||
| A. M. Soubh؛ M. A. Abdoli* ؛ M. Baghdadi؛ B. Aminzadeh | ||
| Graduate Faculty of Environment, University of Tehran, P.O.Box 1417853111, Tehran, Iran | ||
| چکیده | ||
| The present research studies the performance of Converter Sludge (CL)as a nano-activator of persulfate (PS) in Permeable Reactive Barrier (PRB) as an in-situ technology for leachate treatment.In batch experiments, the acidic conditions (pH = 3) have been the most suitable for removal operations, where COD and NH3 removal efficiencies are 69.15% and 60.96%, respectively. The Box–Behnken design (BBD) has been employed to optimize three parameters, namely PS/ COD ratio, CS dose, and pore volume (PV), using COD and NH3 of leachate landfill as the target pollutant. The BBD is considered a satisfactory model to optimize the process. Under optimal conditions (PS/COD ratio: 3.47, CS dose: 3.09 g L-1,and PV: 4.27), the measured values of the COD and NH3 removal efficiencies have been 74.2 and 66.8, respectively, all within the 95%-prediction intervals, which indicate the model’s success in predicting removal values. The biodegradability (BOD5/COD) of the real leachate has been enhanced from 0.25 to 0.77, with the toxicity of real leachate getting decreased by more than 90%. | ||
| کلیدواژهها | ||
| COD؛ NH3؛ Removal؛ Box–Behnken design؛ BOD5/COD؛ Toxicity | ||
| مراجع | ||
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