Leachate treatment before injection into a bioreactor landfill: Clogging potential reduction and benefits of using methanogenesis

Lozecznik, Stanislaw; Sparling, Richard; Oleszkiewicz, Jan A.; Clark, Shawn P.; VanGulck, Jamie F.

doi:10.1016/j.wasman.2010.04.024

Cited by 31 publications

(9 citation statements)

References 10 publications

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“…Overall, the addition of GAC led to a higher production of acetate in the cultures, in comparison to control groups. The results obtained in this study are in line with those obtained by Lozecznik et al (2010), 31 in which at low concentrations of propionate (<178 mg L −1 ), methanogenesis of leachate was greater at high (2137 mg L −1 ) rather than low (510 mg L −1 ) acetate concentrations. However, higher VFA concentrations have been reported to hinder methanogenesis, and the most common explanation for process failure is acidification due to the concentration of undissociated fatty acids, particularly propionic acid.…”

Section: Volatile Fatty Acids Dynamicssupporting

confidence: 93%

“…However, higher VFA concentrations have been reported to hinder methanogenesis, and the most common explanation for process failure is acidification due to the concentration of undissociated fatty acids, particularly propionic acid. 32 Lozecznik et al (2010) 31 suggested that the ratio between acetate and propionate has an important influence on methanogenic efficiency during anaerobic digestion. The authors reported that the greatest methanogenic activity from landfill leachate was achieved when concentrations of acetate and propionate initially ranged from 1500-1900 and from 1000-1800 mg L −1 , respectively.…”

Section: Volatile Fatty Acids Dynamicsmentioning

confidence: 99%

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Overcoming ammonia inhibition in anaerobic blackwater treatment with granular activated carbon: the role of electroactive microorganisms

Florentino

Sharaf

Zhang

et al. 2019

Environ. Sci.: Water Res. Technol.

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Section: Volatile Fatty Acids Dynamicssupporting

confidence: 93%

Section: Volatile Fatty Acids Dynamicsmentioning

confidence: 99%

Overcoming ammonia inhibition in anaerobic blackwater treatment with granular activated carbon: the role of electroactive microorganisms

Florentino

Sharaf

Zhang

et al. 2019

Environ. Sci.: Water Res. Technol.

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“…Hence, internal leachate characteristic in the solid waste landfill site during recirculation needs to be done by the introduction of monitoring wells (Sormunen et al, 2008). In bioreactor landfills clog formation during leachate recirculation can be effectively controlled by methanogenesis of leachate prior to recirculation (Lozecznik et al, 2010). Khire and Mukherjee (2007) identified the key design variables for leachate recirculation system in a landfill consisting of vertical wells using the finite-element model HYDRUS-2D numerical model.…”

Section: Application Of Biological and Biochemical Techniques In Reacmentioning

confidence: 99%

Contemporary Environmental Issues of Landfill Leachate: Assessment and Remedies

Mukherjee

Mukhopadhyay

Hashim

et al. 2014

Critical Reviews in Environmental Science and Technology

193

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Landfills are the primary option for waste disposal all over the world. Most of the landfill sites across the world are old and are not engineered to prevent contamination of the underlying soil and groundwater by the toxic leachate. The pollutants from landfill leachate have accumulative and detrimental effect on the ecology and food chains leading to carcinogenic effects, acute toxicity and genotoxicity among human beings. Management of this highly toxic leachate presents a challenging problem to the regulatory authorities who have set specific regulations regarding maximum limits of contaminants in treated leachate prior to disposal into the environment to ensure minimal environmental impact. There are different stages of leachate management such as monitoring of its formation and flow into the environment, identification of hazards associated with it and its treatment prior to disposal into the environment. This review focuses on: (i) leachate composition, (ii) Plume migration, (iii) Contaminant fate, (iv) Leachate plume monitoring techniques, (v) Risk assessment techniques, Hazard rating methods, mathematical modeling, and (vi) Recent innovations in leachate treatment technologies.However, due to seasonal fluctuations in leachate composition, flow rate and leachate volume, the management approaches cannot be stereotyped. Every scenario is unique and the strategy will vary accordingly. This paper lays out the choices for making an educated guess leading to the best management option.

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“…Leachate needs to be piped to the leachate disposal plant for final treatment [6,7]. When the leachate transfer pipes have been in operation for a period of time, severe clogging often occurs in them [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Leachate Pretreatment before Pipe Transportation: Reduction of Leachate Clogging Potential and Upgrading of Landfill Gas

Xie

Guo

Liú

2022

IJERPH

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Leachate and landfill gas are the main contaminants produced by modern sanitary landfills. The leachate easily leads to clogging in the leachate transportation pipe, and the landfill gas can be used as renewable energy after the removal of CO2. The study aims to investigate the removal of the major scale forming ion of Ca2+ in leachate using raw landfill gas before pipe transportation. The research demonstrated that, under the given experimental conditions, the removal rate of Ca2+ in the leachate was positively correlated with the pH value of the leachate, and negatively correlated with the intake flow rate of the landfill gas; the highest removal rate of Ca2+ was achieved when the intake flow rate and volume were 0.05 L/min and 2.0 L, respectively, and the highest removal rate of Ca2+ from the leachate was about 90%. The maximum removal rate of CO2 from landfill gas could reach 95%, and the CO2 content of the post-reaction gas was as low as 1.74% (volume percentage). The scanning electron microscope (SEM) and X-ray diffraction (XRD) analysis showed that the precipitate was spherical and mainly contained inorganic substances such as CaCO3, MgCO3, Ca(OH)2, Mg(OH)2, and SiO2. The study showed that, before the leachate was piped, the Ca2+ could be removed using the raw landfill gas, thereby reducing the potential for the formation of precipitation clogging in the pipeline. This study also provides new ideas for upgrading landfill gas to achieve a renewable-energy utilization plan, and reduces greenhouse gas emissions by reducing CO2 emissions from landfills.

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Leachate treatment before injection into a bioreactor landfill: Clogging potential reduction and benefits of using methanogenesis

Cited by 31 publications

References 10 publications

Overcoming ammonia inhibition in anaerobic blackwater treatment with granular activated carbon: the role of electroactive microorganisms

Overcoming ammonia inhibition in anaerobic blackwater treatment with granular activated carbon: the role of electroactive microorganisms

Contemporary Environmental Issues of Landfill Leachate: Assessment and Remedies

Leachate Pretreatment before Pipe Transportation: Reduction of Leachate Clogging Potential and Upgrading of Landfill Gas

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