Evaluating Fugacity Model for Organic Contaminants in Waste Deposited in Khulna Landfill

Trichloroethylene, and Benzene etc. in different landfill components such as landfill gas (LFG), leachate and waste due to emission from a selected waste disposal site at old Rajbandh, Khulna, Bangladesh. Level III Fugacity model was implemented on the selected evaluative environment and Monte Carlo simulation was used to account the variability and uncertainty of the model inputs as well as to observe its effect on the model outputs. It was found that Trichloroethylene had the highest concentration in waste compartment with a magnitude of 2.0E-02 mol/m3 and most of the mass (52%) was accumulated in waste compartment. It was found that m-Xylene was the highly persistent organic contaminant as it spends the highest amount of time in the modelled landfill environment. Reaction was the main removal mechanism for Trichloroethylene as about 79% of the total amount was removed by oxidation and hydrolysis reaction. It is essential to know the behaviour of potential harmful contaminants for assessing human health hazards from landfill site. The outcome of level III Fugacity model like mass, concentrations, etc. of organic contaminants generated from a selected landfill will further be helpful for evaluating health hazards from landfill site at Khulna. Journal of Engineering Science 11(1), 2020, 67-82

Download Full-text

Quantification and diversity of the archaeal community in a landfill site

Canadian Journal of Microbiology ◽

10.1139/w03-006 ◽

2003 ◽

Vol 49 (1) ◽

pp. 28-36 ◽

Cited By ~ 13

Author(s):

Koji Mori ◽

Richard Sparling ◽

Masahiro Hatsu ◽

Kazuhiro Takamizawa

Keyword(s):

16S Rdna ◽

Archaeal Community ◽

Landfill Site ◽

Disposal Site ◽

Solid Waste Disposal ◽

Waste Disposal Site ◽

Domain Specific ◽

Molecular Approaches ◽

Pcr Products ◽

Pcr Method

At a sea-based, solid waste disposal site, methanogenic organisms were quantified by molecular approaches. The samples collected for analysis were from anaerobic leachate of the landfill site. When the DNA extracted from the leachate was examined by a quantitative PCR method using domain-specific 16S rDNA primers, archaeal DNA represented 23% of the total extracted DNA. On the basis of cloning and sequence comparison of the archaeal PCR products, more than half of the sequences belonged to Euryarchaeota, particularly relatives of the genus Methanosaeta. The cloning analysis suggested that the majority of methane emitted from the landfill site originated from the acetate-utilizing Methanosaeta.Key words: landfill, methanogen, archaea, 16S rDNA.

Download Full-text

Biomonitaring of Waste Disposal Site. Gas Generation and Its Countermeasures as Landfill Site.

Waste Management Research ◽

10.3985/wmr.6.294 ◽

1995 ◽

Vol 6 (4) ◽

pp. 294-302

Author(s):

Joji FUKUYAMA ◽

Junji MASUDA

Keyword(s):

Waste Disposal ◽

Landfill Site ◽

Disposal Site ◽

Waste Disposal Site ◽

Gas Generation

Download Full-text

PENGELOLAAN EMISI GAS LANDFILL (BIOGAS) SEBAGAI ENERGI TERBARUKAN

Sutet ◽

10.33322/sutet.v7i1.166 ◽

2018 ◽

Vol 7 (1) ◽

pp. 42-47

Author(s):

Redaksi Tim Jurnal

Keyword(s):

Waste Disposal ◽

Organic Material ◽

Open Space ◽

Landfill Gas ◽

Disposal Site ◽

Photochemical Smog ◽

Waste Disposal Site ◽

Anaerobic Process ◽

Public Open Space ◽

Landfill Gas Emissions

The final landfill is a place to hoard the garbage and the bin gets the last treatment. The final disposal site may be either deep or field-shaped. In recent years, dumped end landfills have finally been converted to a public open space. Final waste disposal site is one of the biggest sources of landfill gas emissions in Indonesia. In the anaerobic process, the organic material decomposes and the landfill gas is produced. This gas then converges and rises regardless of the atmosphere. This becomes dangerous because it can cause an explosion, but it can also cause photochemical smog.

Download Full-text

SUBSURFACE GAS GENERATION AT A LANDFILL IN JOHANNESBURG

Clean Air Journal ◽

10.17159/caj/2010/18/1.7079 ◽

2010 ◽

Vol 18 (1) ◽

pp. 10-14

Author(s):

S. Bhailall ◽

S. Piketh ◽

N. Smith ◽

J. Bogner

Keyword(s):

Landfill Gas ◽

Disposal Site ◽

Explosion Hazard ◽

Order Kinetic ◽

Lateral Migration ◽

Solid Waste Disposal ◽

Waste Disposal Site ◽

Gas Generation ◽

Local Air Pollution ◽

Explosion Risk

Landfill gas (LFG) consisting of 50-60 % v/v CH4 contributes to global greenhouse gas emissions as well as to local air pollution and nuisance odours; in addition, the uncontrolled subsurface migration of LFG can pose an explosion hazard. LFG is explosive mostly due to its CH4 content. CH4 is explosive at concentrations of 5-15 % in air. Venting of the gas to the atmosphere prevents any explosion risk; however, the concern lies with the lateral migration of CH4 through soil and along cracks and its subsequent accumulation. This highlights the importance of subsurface LFG monitoring. In this study, subsurface LFG generation is measured at a solid waste disposal site situated approximately 20 km west of Johannesburg. The results of three first-order kinetic models (to estimate LFG generation) for the site are compared. The three models are LandGEM, GasSim and the IPCC model contained in the 2006 UNFCCC 2006 National Inventory Guidelines for waste. High LFG concentrations are recorded along the northern boundary of the site (exceeding 60% v/v). Modelled LFG generation simulations are slightly higher from LandGEM whilst the IPCC Waste Model predicts the lowest concentrations.

Download Full-text