Multi-barrier treatment of mature landfill leachate: effect of Fenton oxidation and air stripping on activated sludge process and cost analysis

Carluccio, Marco De; Fiorentino, Antonino; Rizzo, Luigi

doi:10.1016/j.jece.2020.104444

Cited by 27 publications

(4 citation statements)

References 21 publications

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“…Addressing the presence of refractory organics in POME is of paramount importance for effective wastewater treatment and environmental protection. Landfill leachate H2O2/Fe 2+ = 1; Fe 2+ = 3500 mg L -1 120 82% COD [16] Note(s): n.a. : not available.…”

Section: Fenton Oxidationmentioning

confidence: 99%

Integrated Struvite Precipitation and Fenton Oxidation for Nutrient Recovery and Refractory Organic Removal in Palm Oil Mill Effluent

Sea,

Chua,

Ngoh

et al. 2024

Water

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Anaerobically treated palm oil mill effluent (AnT-POME), containing a high concentration of ammoniacal-nitrogen (NH4+-N) and soluble chemical oxygen demand (sCOD) was subjected to sequential processes of struvite precipitation to recover NH4+-N and Fenton oxidation for sCOD removal. The optimization of treatment was conducted through response surface methodology (RSM). Under optimized struvite precipitation conditions (Mg2+/NH4+, PO43−/NH4+ molar ratios: 1; pH 8.2 ± 0.1), NH4+-N concentration decreased to 41 ± 7.1 mg L−1 from an initial 298 ± 41 mg L−1 (78.8 ± 1.6 % removal). Field emission scanning electron microscopy (FESEM) coupled with energy-dispersive X-ray spectroscopy (EDX) confirmed NH4+-N was recovered as struvite. Subsequent Fenton oxidation under the optimized conditions (H2O2 dosage: 2680 mg L−1; molar ratio of Fe2+/H2O2: 0.8; reaction time: 56 min) reduced sCOD concentration to 308 ± 46 mg L−1 from an initial 1350 ± 336 mg L−1 (76.0 ± 1.0 % removal). The transparent appearance of treated AnT-POME validated the removal of sCOD responsible for the initial brownish appearance. Models derived from RSM demonstrated significance, with high coefficients of determination (R2 = 0.99). Overall, integrated struvite precipitation and Fenton oxidation effectively removed NH4+-N and sCOD from AnT-POME, contributing to nutrient recovery and environmental sustainability.

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Section: Fenton Oxidationmentioning

confidence: 99%

Integrated Struvite Precipitation and Fenton Oxidation for Nutrient Recovery and Refractory Organic Removal in Palm Oil Mill Effluent

Sea,

Chua,

Ngoh

et al. 2024

Water

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“…COD analysis was carried out using cuvette tests (HACH Co.). BOD 5 was measured according to standard methods (CNR IRSA 5120) [55] using an OXITOP ® system [11]. Hydrogen peroxide residual concentration was determined by reaction between Titanium oxysulfate and H 2 O 2 (DIN 38 409H15 method) to produce pertitanic acid (yellow color).…”

Section: Analytical Measurementsmentioning

confidence: 99%

“…Among them, Fenton reaction (iron salts + hydrogen peroxide) based processes are particularly effective for industrial wastewater treatment, to improve biodegradability before the biological process [10]. Unfortunately, Fenton-based processes are effective at acidic pH, because iron starts to precipitate at pH >3, thus resulting in an environmental problem (sludge production) and increased treatment costs, due to wastewater acidification and the subsequent pH neutralization before the biological process [11]. In order to overcome these drawbacks, different approaches have been investigated in recent years.…”

Section: Introductionmentioning

confidence: 99%

Cationic Dye Degradation and Real Textile Wastewater Treatment by Heterogeneous Photo-Fenton, Using a Novel Natural Catalyst

et al. 2021

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A photo-Fenton process using a local iron oxide as a natural catalyst was compared to Fenton and UV/H2O2 advanced oxidation processes for degrading crystal violet (CV) dye in aqueous solutions. The catalyst was characterized by transmission electron microscopy (TEM), energy dispersive X-ray microanalysis (EDX), Fourier transform infrared spectroscopy (FT-IR), Raman spectrum, X-ray diffraction (XRD), UV-vis spectroscopy, and Brunauer–Emmett–Teller (BET) analysis. The optical properties proved that the catalyst represents a good candidate for photocatalytic activity. The impact of different parameters (catalyst dose, initial CV concentration, initial H2O2 concentration, pH) on the photo-Fenton efficiency was evaluated. A photo-Fenton process operated under UVC light irradiation, at spontaneous pH, with 1.0 g/L of catalyst and 30 mg/L of H2O2 was the most effective process, resulting in 98% CV dye removal within 3 h. LC-MS and ion-chromatography techniques were used to identify demethylated organic intermediates during the process. Furthermore, a regeneration study of the catalyst showed its stability and reusability (after three treatment cycles, CV dye degradation decreased from 94% to 83%). Finally, the photo-Fenton process was tested in the treatment of real textile wastewater, and the effluent was found to be in compliance with standards for industrial wastewater disposal into sewerage.

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“…Comparatively, the concentration of nitrogen in sludge landfill leachate is typically even higher than that in traditional solid waste landfill leachate [12]. Some researchers have used chemical and biological technology to remove ammonium nitrogen from landfill sludge leachate [13][14][15][16][17]. It is worth noting that biological treatment methods, such as the activated sludge process, usually cost too much energy and occupy a large land area.…”

Section: Introductionmentioning

confidence: 99%

Reprocessing and Resource Utilization of Landfill Sludge—A Case Study in a Chinese Megacity

Yang,

Luan,

Nie

et al. 2024

Water

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In the past, due to improper sludge treatment technology and the absence of treatment standards, some municipal sludge was simply dewatered and then sent to landfills, occupying a significant amount of land and posing a serious threat of secondary pollution. To free up land in the landfill area for the expansion of a large-scale wastewater treatment plant (WWTP) in Shanghai, in this study, we conducted comprehensive pilot research on the entire chain of landfill sludge reprocessing and resource utilization. Both the combination of polyferric silicate sulfate (PFSS) and polyetheramine (PEA) and the combination of polyaluminum silicate (PAS) and polyetheramine (PEA) were used for sludge conditioning before dewatering, resulting in dewatered sludge with approximately 60% moisture content. The combined process involved coagulation and sedimentation, flocculation, and oxidation to treat the leachate generated during dewatering. The treatment process successfully met the specified water pollutant discharge concentration limits for the leachate, with the concentration of ammonia nitrogen in the effluent as low as 15.6 mg/L. Co-incineration in a power plant and modification were applied to stabilize and harmlessly dispose of the dewatered sludge. The coal-generating system ran stably, and no obvious problems were observed in the blending process. In the modification experiment, adding 5% to 7% of the solidifying agent increased the sludge bearing ratio by 53% and 57%, respectively. This process effectively reduced levels of fecal coliforms and heavy metals in the sludge but had a less noticeable effect on organic matter content. The modified sludge proved suitable for use as backfill material in construction areas without requirements for organic matter. The results of this study provide valuable insights for a completed full-scale landfill sludge reclamation and land resource release project.

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Multi-barrier treatment of mature landfill leachate: effect of Fenton oxidation and air stripping on activated sludge process and cost analysis

Cited by 27 publications

References 21 publications

Integrated Struvite Precipitation and Fenton Oxidation for Nutrient Recovery and Refractory Organic Removal in Palm Oil Mill Effluent

Integrated Struvite Precipitation and Fenton Oxidation for Nutrient Recovery and Refractory Organic Removal in Palm Oil Mill Effluent

Cationic Dye Degradation and Real Textile Wastewater Treatment by Heterogeneous Photo-Fenton, Using a Novel Natural Catalyst

Reprocessing and Resource Utilization of Landfill Sludge—A Case Study in a Chinese Megacity

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