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Recycling and Disposal of Waste Plastics
Published in Manas Chanda, Plastics Technology Handbook, 2017
As a way to dispose of solid waste, landfills have several advantages, especially in countries like the United States with large open spaces. Compared to materials recovery and incineration processes that require extensive investments in infrastructure and manpower, landfills have fewer fixed, or ongoing, costs and, in addition, landfill gas can be upgraded to natural gas, promoting landfill gas utilization as a potential revenue stream. In some countries, landfill gas recovery is extensive. In the United States, for example, more than 850 landfills have active landfill gas recovery systems.
Gas Utilization
Published in T. H. Christensen, R. Cossu, R. Stegmann, Landfilling of Waste: Biogas, 2020
T. H. Christensen, R. Cossu, R. Stegmann
In the future, the limiting conditions imposed by landfill technology (i.e. surface covering, separate collection and reuse of organic waste, pretreatment) must be taken into consideration for the layout and design of landfill gas utilization plants, as there is a great risk of oversizing the plant.
Estimation of landfill gas production and potential utilization in a South Africa landfill
Published in Journal of the Air & Waste Management Association, 2023
Prince Obinna Njoku, Joshua Nosa Edokpayi
As mentioned earlier, the LandGEM and Afvalzorg models were used to estimate the annual LFG generated from Weltervenden landfill site. For this purpose, first a recognizance survey was carried out to understand the mode of operation of the landfill and verify the viability of generating enough LFG for potential use. After this, general information of the landfill was collected from the Local Municipality and South African Waste Information Center (SAWIC) like the total amount of MSW deposited in the landfill annually; the year the landfill commenced operations; the design potential full capacity of the landfill; and waste composition of the landfill (Figure 2). Also, other relevant parameters were estimated using the countries specific values and the IPCC default values like Degradable Organic Carbon (DOC) (Table 3), potential methane generation capacity (L0), Methane Correction Factor (MCF) (managed anaerobic landfill), and degradation constant. Afterward, the data was inputted into the LandGEM and Afvalzorg models, so as to, calculate the emissions from the landfill. The LFGcost model was used to calculate the cost-benefit analysis of implementing a landfill gas utilization technology in the landfill.