Performance of bioreactor landfill with waste mined from a dumpsite

Karthikeyan, Obulisamy Parthiba; Swati, Mehta; Nagendran, R.; Joseph, Kurian

doi:10.1007/s10661-007-9709-z

Cited by 19 publications

(7 citation statements)

References 21 publications

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“…with the values reported in the literature having higher moisture content for fresh MSW and lower moisture content for mined waste (Karthikeyan et al 2007 andSri Shalini et al 2010). The volatile fraction was higher in fresh MSW (44 %) and mined MSW (21 %) than slurry (17 %).…”

Section: Seed Characteristicssupporting

confidence: 79%

Aerobic and anaerobic ammonium-oxidising bacterial enrichment from municipal solid waste

Shalini

Kurian

Wong

2014

Int. J. Environ. Sci. Technol.

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Leachate from the municipal solid waste (MSW) landfills contains high concentration of ammoniacal nitrogen that is a major toxic pollutant that has a great threat to environment. Among the processes available for the removal of ammoniacal nitrogen, one process is a combination of partial nitrification and anaerobic ammonium oxidation (anammox) process. It requires aerobic ammonium-oxidising bacteria (AOB) and anaerobic ammonium-oxidising bacteria (AnAOB). This paper presents the feasibility of enriching the AOB and AnAOB in 100-mL and 2.5-L batch reactors from fresh and mined MSW and leachate under aerobic and anaerobic conditions with varying feed-to-seed ratio. The AOB and AnAOB activity was monitored by measuring the intermediates such as hydroxylamine and hydrazine along with variations in ammoniacal nitrogen, nitrite nitrogen, and nitrate nitrogen concentrations in the reactor contents. The formation of intermediates such as hydroxylamine and hydrazine and ammoniacal nitrogen transformation data confirmed the enrichment of AOB and AnAOB. Further, AOB and AnAOB were validated by most probable number test and scanning electron microscopy analysis, respectively. DNA extraction, polymerase chain reaction amplification, and sequencing analysis authenticated the AnAOB as Candidatus Brocadia anammoxidans.

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Section: Seed Characteristicssupporting

confidence: 79%

Aerobic and anaerobic ammonium-oxidising bacterial enrichment from municipal solid waste

Shalini

Kurian

Wong

2014

Int. J. Environ. Sci. Technol.

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“…The changes in NH 3 and HNO 2 during the landfill leachate study are depicted in Figure 4 (a). The presence of NH 3 and HNO 2 affected NOB activity [13,18] [18].…”

Section: Intermediates In Anmbr Treating Landfill Leachatementioning

confidence: 99%

“…The presence of NH 3 and HNO 2 affected NOB activity [13,18] [18]. But in partial nitritation process, half of the influent NH 4 + -N was converted to NO 2 --N by AOB, with presence of the unionized forms of their substrate and product NH 3 and HNO 2 [9,18].…”

Section: Intermediates In Anmbr Treating Landfill Leachatementioning

confidence: 99%

“…Partially treated landfill leachate from landfill bioreactor and old landfill leachate is an important source of wastewater rich in nitrogen load with low organic content. Typical NH 4 + -N in these leachates varies from 400 -5100 mg/L [1,2,3]. As the landfill ages the methanogenic bacteria in the waste converts the volatile fatty acids (VFA) to CH 4 and CO 2 .…”

Section: Introductionmentioning

confidence: 99%

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Autotrophic ammonia removal from landfill leachate using anaerobic membrane bioreactor

Suneethi

Joseph

2017

Eco-Tech

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Anaerobic Membrane Bioreactor (AnMBR) is an innovative high cell density system having complete biomass retention, high reactor loading and low sludge production and suitable for developing slow growing autotrophic bacterial cultures such as ANAMMOX. The Anaerobic Ammonium Oxidation (ANAMMOX) process is an advanced biological nitrogen removal removes ammonia using nitrite as the electron acceptor without oxygen. The NH 4 + -N in the landfill leachate that is formed due to the release of nitrogen from municipal solid waste (MSW), when discharged untreated, into the surface water can result in eutrophication, aquatic toxicity and emissions of nitrous oxide (N 2 O) to atmosphere. Besides, NH 4 + -N accumulation in landfills poses long term pollution issue with significant interference during post closure thereby requiring its removal prior to ultimate disposal into inland surface waters. The main objective of this study was to investigate the feasibility and treatment efficiency of treating landfill leachate (to check) for removing NH

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“…The dumpsites cause environmental degradation since they are susceptible to open burning, groundwater pollution and exposed to scavengers and disease vectors (Karthikeyan et al, 2007). Most of these dumpsites are very close to highly populated urban areas and does not have enough capacity to receive waste for long time (Gunawardana et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Open Dump Simulation for Estimation of Pollution Levels in Wet Tropical Climates

et al. 2011

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Leachate management is one of the major issues in rehabilitation of present dumpsites. A field scale 'lysimeter' study for open dump simulation of municipal solid waste with 940 kg/m 3 placement density was carried out to determine decomposition pattern of waste, namely the quality and quantity of leachate generations in wet tropical climates for 4 years. The study entailed the development of an analytical model to determine mass and water balances. The percentage dry weight reduction of organic matter was 83 % in the 4 year period. The prediction from the mass balance model gave an evapotranspiration coefficient of 0.826. The classical 'logistic growth' kinetics used in the analysis by considering the cumulative solid content (CSC) in leachate as the microbial substrate complex discharged and it was the key factor used to determine the pollution levels. CSC in leachate showed four distinct phases considered as three growth curves and a straight-line relationship with time. Three growth curves separated and simulated the solid content discharges in each of the phases. The times for the maximum solid discharge rate for each phase were 17, 150, and 349 days, respectively from waste placement. In applying to actual dumpsite conditions, all of the CSC values of the three phases (727 days) become a day's event. In an 'effective rainfall event', the minimum CSC discharge should be 24,859.5 g. The maximum CSC is 49,684 g. The Biological Oxygen Demand (BOD 5) values at the maximum substrate utilization rate for first and second phases were 18937 mg/L and 1775 mg/L. Therefore, maximum aggregated BOD 5 value should be 9781.5 mg/L. Further studies are required towards modeling deep dumpsites.

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Performance of bioreactor landfill with waste mined from a dumpsite

Cited by 19 publications

References 21 publications

Aerobic and anaerobic ammonium-oxidising bacterial enrichment from municipal solid waste

Aerobic and anaerobic ammonium-oxidising bacterial enrichment from municipal solid waste

Autotrophic ammonia removal from landfill leachate using anaerobic membrane bioreactor

Open Dump Simulation for Estimation of Pollution Levels in Wet Tropical Climates

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