Intensification of landfill leachate treatment by advanced Fenton process using classical and statistical approach

Nakhate, Pranav H.; Patil, Hrushikesh; Marathe, Kumudini V.

doi:10.1016/j.cep.2018.10.004

Cited by 32 publications

(10 citation statements)

References 53 publications

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“…Also, other studies suggest that advanced oxidation usage increases biodegradability [14,17]. Coagulation with FeCl 3 at pH 6.0, coupled with the Fe 0 /H 2 O 2 process, proved to have similar efficiency to other processes tested in the available literature, including electrochemical [11,20,36] and advanced oxidation [15][16][17]19,21,25] treatments.…”

Section: Fe 0 /H 2 O 2 Processmentioning

confidence: 64%

“…The pH during the Fe 0 /H 2 O 2 process was set to 3.0. After specified times, (15,30, and 60 min), the Fe 0 /H 2 O 2 process was stopped by increasing the pH to 9.0 using 3 M NaOH. Samples were left overnight to allow hydrogen peroxide decomposition and iron-based sludge sedimentation.…”

Section: Fe 0 /H 2 O 2 Processmentioning

confidence: 99%

“…The worldwide wastewater discharge regulations and standards have become stricter; hence, there is an urgent need to find an effective LL treatment method. Many researchers are investigating new and effective methods for LL treatment, such as sorption on magnetic particles [2] and other sorbents [8], reactive granular filters [9], the use of metallic iron [4,10,11] and other heterogeneous catalysts [12,13], Fenton (classical and solar) [14][15][16][17], electro-Fenton [18,19], and other electrochemical processes [11,[20][21][22][23][24], usage of different oxidants and their combination [25,26], microwaves [10], ultrasounds [27], membrane processes [28], hydrodynamic cavitation [29], microalgae [30], biofiltration [21,31], supercritical water oxidation [32], oscillating biological membrane photoreactors [33], anaerobic digestion [27,34], dynamic membrane bioreactors [35], bio-electro-Fenton [36], upflow sludge bed reactors [37], moving bed biofilm reactors [38], and the sequencing batch reactor [39]. Moreover, a few review articles have summarized the LL treatment methods [40][41][42]…”

Section: Introductionmentioning

confidence: 99%

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Treatment of Landfill Leachates with Combined Acidification/Coagulation and the Fe0/H2O2 Process

Bogacki

Marcinowski

El-Khozondar

2019

Water

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One of the major environmental concerns associated with waste disposal is the large amount of generated landfill leachates (LL), which are considered a type of wastewater with a complex composition. There is an urgent need to find an effective LL treatment method. LL were subjected to pretreatment followed by the Fe0/H2O2 process. Pretreatment efficiency was coagulation at pH 6.0 >> coagulation at pH 9.0 > acidification at pH 3.0. Coagulation at pH 6.0 in an optimal Fe3+ dose of 1000 mg/L decreased total organic carbon (TOC) from the initial concentration of 1061 mg/L to 491 mg/L while acidification to pH 3.0 decreased TOC to 824 mg/L. After acidification, the Fe0/H2O2 process with 8000/9200 mg/L Fe0/H2O2 reagent doses decreased TOC to 499 mg/L after a processing time of 60 min. Performance of the Fe0/H2O2 process after coagulation at pH 6.0 for optimal Fe0/H2O2 8000/5540 mg/L reagent doses decreased TOC to 268 mg/L (75% TOC removal). Treatment of landfill leachates with combined process coagulation and Fe0/H2O2 also increased their susceptibility to biodegradation, expressed as the biochemical oxygen demand/chemical oxygen demand (BOD5/COD) ratio from 0.13 to 0.43, allowing LL to be considered as susceptible to biodegradation. Fe0/H2O2 process kinetics was described. A statistical analysis confirmed the obtained results. The proposed method can be successfully applied for LL treatment.

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Section: Fe 0 /H 2 O 2 Processmentioning

confidence: 64%

Section: Fe 0 /H 2 O 2 Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Treatment of Landfill Leachates with Combined Acidification/Coagulation and the Fe0/H2O2 Process

Bogacki

Marcinowski

El-Khozondar

2019

Water

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“…Three independent parameters of the optimization experiment were methanol concentration (0%, 50% and 100% v/v), extraction temperature (50°, 75° and 100°C) and extraction time (10, 20 and 30 min). Experiments were performed in triplicates using one factor at a time technique (Nakhate et al, 2018). While the examined independent factor was varied, the remaining independent factors were controlled at the middle level.…”

Section: Optimization Of Organic Bpe Extraction Processmentioning

confidence: 99%

Biological activities and potential of organic banana (Musa acuminata) peel extract in enhancing the immunity of giant freshwater prawn (Macrobrachium rosenbergii)

Naksing

Rattanavichai

Teeka

et al. 2022

Aquaculture Research

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This research aimed to optimize the extracting condition of banana peel (BP) and to investigate the effect of organic banana peel extract (BPE) on the immunity of giant freshwater prawn (Macrobrachium rosenbergii). The result demonstrated that the optimum extracting condition of organic BPE was 50% v/v of methanol at 100°C for 10 min. Under this condition, the maximum total phenolic content and extraction yield of 10.44 mg of gallic acid equivalents (GAE) per g of dry matter (mg GAE/g DM) and 33% w/v were obtained respectively. The organic BPE could inhibit an aquatic pathogen Aeromonas hydrophila at the minimum inhibitory concentration of 625 µg/disc. The main phytochemicals in organic BPE showed two major biological functions, which are antioxidant and antipathogenic activities. Subsequently, the effects of organic BPE on the immunity of M. rosenbergii were investigated. The results demonstrated that the organic BPE could increase immunity and phagocytic activity and decrease the susceptibility of M. rosenbergii. Moreover, the organic BPE could also increase total as well as differential haematocyte count, decrease the coagulation time and increase the total protein in serum of M. rosenbergii. The phagocytic activity of prawn was enhanced to 82.00% by using an organic BPE at 6 µg/g. At the same time, the cumulative mortality was declined to lower 20% after 6 days of organic BPE injection. In conclusion, organic BPE can be a potential immunostimulant in giant freshwater prawn culture. The utilization of BP in aquaculture can further add the value of BP and reduce organic pollutants.

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“…Mostly, the results were obtained by factors analysis separately, one-factor-at-a-time, and hence do not consider the interaction between them. Only in the last decade was it possible to observe the application of factorial analysis 31,38,40,45,46,48,49,53,54,55,56,57,58,59 .…”

mentioning

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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Intensification of landfill leachate treatment by advanced Fenton process using classical and statistical approach

Cited by 32 publications

References 53 publications

Treatment of Landfill Leachates with Combined Acidification/Coagulation and the Fe0/H2O2 Process

Treatment of Landfill Leachates with Combined Acidification/Coagulation and the Fe0/H2O2 Process

Biological activities and potential of organic banana (Musa acuminata) peel extract in enhancing the immunity of giant freshwater prawn (Macrobrachium rosenbergii)

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

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