scholarly journals Evaluation of optimum landfill design: Mid Auchencarroch experimental landfill emissions

Author(s):  
T. C. Koliopoulos ◽  
G. Koliopoulou
Keyword(s):  
Author(s):  
S. A. Nta ◽  
M. J. Ayotamuno ◽  
A. H. Igoni ◽  
R. N. Okparanma

This paper presents potential impact on health of emission from landfill site on Uyo village road, Uyo local government area of Akwa Ibom State, Nigeria. Three sampling points were assessed for particulate matter (PM2.5 and PM10), nitrogen dioxide (NO2), sulphur dioxide (SO2), carbon monoxide (CO), hydrogen sulphide H2S, ammonia (NH3), total volatile organic carbon (TVOC) and hydrogen cyanide (HCN) using highly sensitive digital portable meters. The data obtained were expressed in terms of an air quality index. Air quality index indicates that the ambient air can be described as unhealthy for sensitive groups for NO2, unhealthy for SO2 and PM2.5 and moderate for CO, respectively. H2S, NH3, TVOC, HCN, PM10 were not indicated in USEPA air quality standards. It recommended that stringent and proper landfill emissions management together with appropriate burning of wastes should be considered in the study area to ease the risks associated with these pollutants on public health.


2017 ◽  
Vol 42 ◽  
Author(s):  
Ifeanyichukwu Clinton Ezekwe ◽  
Samuel Bankole Arokoyu

Este estudo teve como objetivo fornecer uma perspectiva sobre as emissões de gases de aterro e os efeitos ambientais do sistema de gestão de resíduos urbanos na cidade de Port Harcourt, na Nigéria, e seu potencial de geração de energia. Técnicas de medição da qualidade do ar em tempo real, observações de campo e modelagem de LFG foram aplicadas aos aterros da cidade de Port Harcourt, que recebem uma mistura de resíduos domésticos e perigosos de até um milhão de toneladas por ano e produzem cerca de 68 milhões de m3/ano de biogás que, adequadamente aproveitado, pode gerar mais de 11 milhões de KWh/ano de eletricidade. Também foi descoberto que as emissões de SO2 dos aterros estavam acima dos limites da USEPA (75ppb), enquanto outros gases regulamentados estavam dentro de limites aceitáveis. As partículas estavam acima dos limites aceitáveis e tendiam a aumentar até 250m de raio dos aterros, colocando sérios riscos para a saúde respiratória e cardiovascular, especialmente entre os habitantes e trabalhadores que operam a menos de 250 metros dos aterros sanitários. Com isso em mente, recomenda-se o seguinte: a) o encerramento definitivo de dois dos aterros na cidade; b) aquisição de todos os bens a menos de 300 metros do raio do centro dos aterros que estão dentro da "área de planejamento" de cada aterro e compensando adequadamente todas as propriedades assim adquiridas; e c) construção de quatro aterros devidamente projetados com capacidade total para capturar lixiviação e converter LFG em energia, através de parcerias público-privadas.


Author(s):  
M. A. J. van Berlo ◽  
Harry de Waart

A CO2-evaluation is made for landfill and Waste-to-Energy (WtE) concepts. Different concepts are identified and compared for their performance on energy and materials recovery. Performance indicators for WtE are compared; like energy efficiency, EXergy efficiency, the R1-D10 formula from the EU Waste Framework directive, and CO2-emission and avoidance. It is shown that, due to the biomass content and the avoidance effect due to the recovery of energy and materials, conventional WtE has a near zero CO2-emission per ton of waste. Optimised WtE can have a significant negative overall emission of 200–300 kgCO2/ton of waste. This means an absolute net avoidance of CO2 by WtE. The reduction relative to land filling is as much as 500–1200 kgCO2/ton of waste. The potential for optimisation of the energy recovery as well as the material recovery of the WtE infrastructure is demonstrated. If WtE is evaluated as a power plant, an optimised plant can have an emission of only 0,336 kgCO2/kWh, lower than a gas fired electrical power plant, and this absolute figure does not include the avoided landfill emissions. With CHP this can be reduced even further. The actual potential of electricity production from WtE for the EU-15 is calculated to be over 7,5% of total electricity production. Additionally heat and the metal recoveries could be doubled.


2011 ◽  
Vol 31 (7) ◽  
pp. 1522-1531 ◽  
Author(s):  
David Laner ◽  
Johann Fellner ◽  
Paul H. Brunner
Keyword(s):  

2017 ◽  
Vol 139 (02) ◽  
pp. 32-37
Author(s):  
John B. Kitto ◽  
Larry A. Hiner

This study presents an overview of distinctive features of America’s first new waste-to-energy plant, which is a source of renewable energy and reduces greenhouse gas emission. With combustion and air pollution equipment designed and supplied by The Babcock & Wilcox Co. (B&W), the new facility addresses the pollution and cost issues that stopped municipalities from building waste-to-energy plants. It eliminates the burial of problematic wastes that routinely emit tons of volatile organic compounds and problematic chemicals. Waste-to-energy plants produce lower net greenhouse gas emissions than any landfill option. Not only do they displace fossil fuels to produce electricity, but also they effectively eliminate methane landfill emissions by burning the biodegradable landfill waste that forms methane. Test results show that the facility’s emissions are, at their maximum, an order of magnitude lower than those limits. This makes it the best in class of any waste-to-energy plant in the world. Waste-to-energy plants give municipalities facing rising landfill costs an economically and environmentally sound alternative to consider.


2009 ◽  
Vol 9 (5) ◽  
pp. 22803-22831
Author(s):  
E. L. Hodson ◽  
D. Martin ◽  
R. G. Prinn

Abstract. This study provides observation-based national estimates of CFC-11, CFC-12, CFC-113, and 1,1,1-trichloroethane emissions for the United States (US) and United Kingdom (UK) from municipal solid waste (MSW) landfills. The scarcity of national estimates has lead to the assumption that a significant fraction of the lingering ozone-depleting substance (ODS) emissions, which have been detected in industrialized countries, could be emitted from landfills. Spatial coverage was achieved through sampling at seven landfills in Massachusetts and through data provided by nine UK landfills. Linear least square regressions of recovered ODS vs. CH4 were used in combination with national estimates of landfill CH4 emissions to estimate 2006 national US and UK ODS landfill emissions. The ODS landfill emission estimates were then compared to recent estimates of total US and UK ODS emissions. US ODS landfill emissions were 0.4%–0.9% (0.006–0.09 Gg/year) of total US emissions. UK ODS landfill emission estimates were 1% (0.008 Gg/year) and 6% (0.03 Gg/year) of total UK CFC-11 and CFC-12 emissions, respectively. This indicates that landfills are only a minor source of lingering ODS emissions in the US, but may be more significant for CFC-12 emissions in the UK. The implications are that the majority of current ODS emissions in industrialized countries are likely coming from equipment still in use.


2010 ◽  
Vol 10 (4) ◽  
pp. 1899-1910 ◽  
Author(s):  
E. L. Hodson ◽  
D. Martin ◽  
R. G. Prinn

Abstract. This study provides observation-based national estimates of CFC-11, CFC-12, CFC-113, and 1,1,1-trichloroethane emissions for the United States (US) and United Kingdom (UK) from municipal solid waste (MSW) landfills. The scarcity of national estimates has lead to the assumption that a significant fraction of the lingering ozone-depleting substance (ODS) emissions, which have been detected in industrialized countries, could be emitted from landfills. Spatial coverage was achieved through sampling at seven landfills in Massachusetts and through data provided by nine UK landfills. Linear least square regressions of recovered ODS vs. CH4 were used in combination with national estimates of landfill CH4 emissions to estimate 2006 national US and UK ODS landfill emissions. The ODS landfill emission estimates were then compared to recent estimates of total US and UK ODS emissions. US ODS landfill emissions are 0.4%–1% (0.006–0.09 Gg/year) of total US emissions. UK ODS landfill emission estimates are 1% (0.008 Gg/year) and 6% (0.03 Gg/year) of total UK CFC-11 and CFC-12 emissions, respectively. This indicates that landfills are only a minor source of lingering ODS emissions in the US, but may be more significant for CFC-12 emissions in the UK. The implication is that the majority of current ODS emissions in industrialized countries is likely coming from equipment still in use.


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