The Efficiency of Landfill Leachate Treatment Using the Fenton’s Reagent

Koc-Jurczyk, Justyna; Jurczyk, Łukasz

doi:10.12911/22998993/2932

Cited by 3 publications

(3 citation statements)

References 23 publications

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“…Furthermore, 86% COD removal was achieved without initial adjustment of pH, different from that reported in the classic literature 5,10,25,33,34,36,37,38 . In recent years it is possible to observe in some papers the application of Fenton´s reagent at neutral pH, Koc-Jurczyk and Jurczyk 64 obtained 58% COD removal of landfill leachate and Jurczyk and Koc-Jurczyk 65 applied the Fenton´s reagent to improve the leachate biodegradability. Thus, these results show the possibility of influencing of other factors, including the presence of some ions in the leachate and the characteristics of HS.…”

Section: Step I -Definition Of the Range Of Values For The Factorsmentioning

confidence: 99%

Performance of Fenton process for the removal of recalcitrant organics from landfill leachate after nitrification / Desempenho do processo Fenton para remoção de orgânicos recalcitrantes de lixiviado do aterro sanitário após a nitrificação

Rodrigues¹,

Pescim²,

Lopes³

2021

BJDV

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The Fenton's process was evaluated for mature leachate treatment, after the biological one, by means of an experimental design divided into three steps: analyzes of the factors separately to establish values ranges; evaluation of significant factors and their interactions by a fractional factorial design; and analyzes of factors by a Central Composite Design (CCD). Performance results were measured by removal efficiency of the chemical organic demand (COD) and color. Four factors were considered: [H2O2], [H2O2]/[Fe2+], pH, and addition mode of reagents. The removal achieved were 88 (COD) and 99% (color) for: [H2O2] = 480 mM (6.02 mg H2O2 mgCOD -1 ); [H2O2]/[Fe 2+ ] =6 (1.65 mg Fe 2+ mgCOD -1 ); pH=3.5, and reagents dosages divided into three stages. For the range evaluated, the [H2O2] had the greatest influence in the COD and color removal. The models established for COD and color removal were able to explain 86.7 and 80.3% of the variance around the average. Alkalinity concentration and the characteristics of the leachate used may interfere in the Fenton efficiency, so should be the focus of further research. The addition of the reagents shared in fractions was not significant in the treatment, however, it is recommended for system operation, avoiding foam formation. In the biological treatment for nitrogen removal from landfill leachate, there is high alkalinity consumption, therefore, when one used before Fenton's process, it helps to reduce the pH. This and the possibility of applying Fenton's process at circum-neutral

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Section: Step I -Definition Of the Range Of Values For The Factorsmentioning

confidence: 99%

Performance of Fenton process for the removal of recalcitrant organics from landfill leachate after nitrification / Desempenho do processo Fenton para remoção de orgânicos recalcitrantes de lixiviado do aterro sanitário após a nitrificação

Rodrigues¹,

Pescim²,

Lopes³

2021

BJDV

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“…On the young landfills, the production of leachate is slightly lower compared to the old ones (over 10 years of operation). This is related to the decreasing water retention capacity in waste and the increasing organic stabilization over time [6,7]. According to the landfill age, leachate can be classified into three types: young, middle-aged and stabilized ( Table 1).…”

Section: Introductionmentioning

confidence: 99%

Biochar compared with activated granular carbon for landfill leachate treatment

2019

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The aim of the research was to compare the effectiveness of sorption of pollutants from landfill leachate on two granulated activated carbons (AG and BA-10) and biochar (BC). The sorption process of wastewater components on activated carbons was carried out under static conditions for 72 hours. The doses of adsorbents used varied from 2-8 g·dm -3 . Results of removing of COD were estimated on the base of adsorption capacity and COD removal efficiency. After 72 h of the process at the highest doses (8 g·dm -3 ), the COD removal rate ranged from 40% (BA-10) to 60% (AG). In the case of biochar, the COD adsorption rate was 53% The state of sorption equilibrium takes a similar character for BC and AG and is determined after 4 h. The degree of sorption of selected metals from landfill leachate using the analyzed range ranged from 84% to 96% depending on its type.

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“…Amongst advanced oxidation methods, in which • OH radicals are generated, O3/UV, H2O2/UV, O3/H2O2/UV, catalysts such as TiO2 and the process of Fenton and photo-Fenton, are also used for landfill leachate and wastewater purification [10,11,12].…”

Section: Introductionmentioning

confidence: 99%

The removal of organic compounds from landfill leachate using ozone-based advanced oxidation processes

Leszczyński

Maria

2018

E3S Web Conf.

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Abstract. In this study, the application of ozonation and ozonation with hydrogen peroxide processes for landfill leachate treatment was investigated. The effluents were characterized by COD 710 mgO2/dm 3 and BOD5 72 mg O2/dm 3 . According to the adopted indicators, the determined BOD/COD ratio of 0.1 in raw leachates indicates a stabilized landfill. Ozone was applied at doses of 0.15 -0.6 gO3/dm 3 , and hydrogen peroxide at such doses to keep the weight ratios of H2O2/O3 0.4 -1.6. The maximum COD and UV absorbance removal was respectively 29% and 51% by applying a high ozone dose of 0.6 gO3/dm 3 . After oxidation, the ratio of BOD/COD was increased from 0.1 up to 0.3. It has been shown that by using hydrogen peroxide in ozonation, organic compounds expressed as COD can be efficiently removed from the effluents. The best conditions for the H2O2/O3 process were obtained with a H2O2/O3 ratio of 0.8 and ozone dose of 0.6 gO3/dm 3 . Under these conditions, the removal efficiency of COD was 46%.

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The Efficiency of Landfill Leachate Treatment Using the Fenton’s Reagent

Cited by 3 publications

References 23 publications

Performance of Fenton process for the removal of recalcitrant organics from landfill leachate after nitrification / Desempenho do processo Fenton para remoção de orgânicos recalcitrantes de lixiviado do aterro sanitário após a nitrificação

Performance of Fenton process for the removal of recalcitrant organics from landfill leachate after nitrification / Desempenho do processo Fenton para remoção de orgânicos recalcitrantes de lixiviado do aterro sanitário após a nitrificação

Biochar compared with activated granular carbon for landfill leachate treatment

The removal of organic compounds from landfill leachate using ozone-based advanced oxidation processes

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