scholarly journals Estimation of greenhouse gas emissions from landfills: application to the Akrotiri landfill site (Chania, Greece)

2013 ◽  
Vol 12 (1) ◽  
pp. 108-116 ◽  
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Production Rate ◽  
Biogas Production ◽  
Landfill Gas ◽  
Gas Production ◽  
Landfill Site ◽  
Gas Emissions ◽  
Biogas Production Rate

Landfilling is one of the most common ways of municipal solid waste (MSW) disposal in developing countries. Air pollutants emitted from landfills contributes to the emission in the atmosphere of greenhouse gases and cause serious problems to the human health. Methane emission from landfill is serious environmental global concern as it accounts for approximately 15 percentages of current greenhouse gas emissions. The current study was focused on the determination of air emissions from the Akrotiri landfill site which is located at the Akrotiri area (Chania, Greece). The models used are the triangular model, the stoichiometric model and LandGEM model. These models are used to estimate the total landfill gas production from a given amount of waste. The models differ on their scientific approach for the quantification on emissions, their complexity and input data requirements. The LandGEM model was selected for the determination of more representative assessed landfill gas emission rates. The maximum biogas production rate by the LandGEM model was calculated to be 1.64× 103 Mg yr-1 and was observed during the year 2008 for the A phase of the landfill, while for the B phase the maximum biogas production rate was 2.70 × 103 Mg yr-1 and was observed during 2014.

Analysis of greenhouse gas emissions from 10 biogas plants within the agricultural sector

2013 ◽  
Vol 67 (6) ◽  
pp. 1370-1379 ◽  
Author(s):  
J. Liebetrau ◽  
T. Reinelt ◽  
J. Clemens ◽  
C. Hafermann ◽  
J. Friehe ◽  
...  
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Agricultural Sector ◽  
Nitrous Oxide Emissions ◽  
Life Cycle Assessments ◽  
Gas Emissions ◽  
Biogas Plants ◽  
Reduce Emissions ◽  
Generation Unit

With the increasing number of biogas plants in Germany the necessity for an exact determination of the actual effect on the greenhouse gas emissions related to the energy production gains importance. Hitherto the life cycle assessments have been based on estimations of emissions of biogas plants. The lack of actual emission evaluations has been addressed within a project from which the selected results are presented here. The data presented here have been obtained during a survey in which 10 biogas plants were analysed within two measurement periods each. As the major methane emission sources the open storage of digestates ranging from 0.22 to 11.2% of the methane utilized and the exhaust of the co-generation units ranging from 0.40 to 3.28% have been identified. Relevant ammonia emissions have been detected from the open digestate storage. The main source of nitrous oxide emissions was the co-generation unit. Regarding the potential of measures to reduce emissions it is highly recommended to focus on the digestate storage and the exhaust of the co-generation.

scholarly journals Two Novel Energy Crops: Sida hermaphrodita (L.) Rusby and Silphium perfoliatum L.—State of Knowledge

Agronomy ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 928
Author(s):  
Laura Cumplido-Marin ◽  
Anil R. Graves ◽  
Paul J. Burgess ◽  
Christopher Morhart ◽  
Pierluigi Paris ◽  
...  
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Energy Production ◽  
Biogas Production ◽  
Soil Health ◽  
Farming Systems ◽  
Environmental Benefits ◽  
Bioenergy Crops ◽  
Future Research ◽  
Gas Emissions

Current global temperature increases resulting from human activity threaten many ecosystems and societies, and have led to international and national policy commitments that aim to reduce greenhouse gas emissions. Bioenergy crops provide one means of reducing greenhouse gas emissions from energy production and two novel crops that could be used for this purpose are Sida hermaphrodita (L.) Rusby and Silphium perfoliatum L. This research examined the existing scientific literature available on both crops through a systematic review. The data were collated according to the agronomy, uses, and environmental benefits of each crop. Possible challenges were associated with high initial planting costs, low yields in low rainfall areas, and for Sida hermaphrodita, vulnerability to Sclerotinia sclerotiorum. However, under appropriate environmental conditions, both crops were found to provide large yields over sustained periods of time with relatively low levels of management and could be used to produce large energy surpluses, either through direct combustion or biogas production. Other potential uses included fodder, fibre, and pharmaceutical uses. Environmental benefits included the potential for phytoremediation, and improvements to soil health, biodiversity, and pollination. The review also demonstrated that environmental benefits, such as pollination, soil health, and water quality benefits could be obtained from the use of Sida hermaphrodita and Silphium perfoliatum relative to existing bioenergy crops such as maize, whilst at the same time reducing the greenhouse gas emissions associated with energy production. Future research should examine the long-term implications of using Sida hermaphrodita and Silphium perfoliatum as well as improve knowledge on how to integrate them successfully within existing farming systems and supply chains.

scholarly journals Does partial replacement of corn with glycerin in beef cattle diets affect in vitro ruminal fermentation, gas production kinetic, and enteric greenhouse gas emissions?

PLoS ONE ◽  
2018 ◽  
Vol 13 (6) ◽  
pp. e0199577 ◽  
Author(s):  
Pedro Del Bianco Benedeti ◽  
Mozart Alves Fonseca ◽  
Teshome Shenkoru ◽  
Marcos Inácio Marcondes ◽  
Eduardo Marostegan de Paula ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Gas Production ◽  
Partial Replacement ◽  
Ruminal Fermentation ◽  
Gas Emissions

scholarly journals The effect of digestate and mineral fertilisation of cocksfoot grass on greenhouse gas emissions in a cocksfoot-based biogas production system

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Vita Tilvikiene ◽  
Kestutis Venslauskas ◽  
Virmantas Povilaitis ◽  
Kestutis Navickas ◽  
Vidmantas Zuperka ◽  
...  
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Production System ◽  
Biogas Production ◽  
Gas Emissions

scholarly journals Dynamic hydrology and plant-mediated effects reduce greenhouse gas emissions and alter wetland microbial communities

2020 ◽  
Author(s):  
Regina B. Bledsoe ◽  
Ariane L. Peralta
Keyword(s):  
Microbial Community ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Redox Status ◽  
Gas Production ◽  
Redox Conditions ◽  
Gas Emissions ◽  
Soil Redox ◽  
Microbial Function ◽  
Mediated Effects

AbstractWhile wetlands represent a small fraction (~7%) of the world’s land surface, it is estimated that one third of wetlands have been lost due to human activities. Wetland habitat loss decreases ecosystem functions such as improving water quality and mitigating climate change. These microbially mediated functions are dependent on particular soil redox conditions, which are altered by soil hydrology and the presence of plants. Differences in microbial physiology allow certain taxa (aerobes and facultative anaerobes) to adapt to fluctuating (dry/wet) hydrologic conditions, while other taxa (obligate anaerobes) are better adapted to continually saturated conditions. Therefore, the duration of hydrologic periods can affect soil microbial community structure and function. Further, plant-derived carbon, nutrients, and air are released by diffusion belowground which also impacts microbial activity in soils. In this study, we hypothesized that redox status due to continuous flooding would support greater abundance of microbial taxa involved in methanogenesis (obligate anaerobes), but plant-mediated oxygen transport would decrease methane emissions. Using a mesocosm design, we manipulated duration of hydrologic condition (i.e., stable dry, stable flooding, and alternating wet/dry) and presence of plants to induce soil redox changes in wetland soils. We measured soil redox status, used targeted amplicon sequencing to characterize the bacterial and archaeal communities, and measured greenhouse gas production to assess microbial function. Hydrology and to a lesser degree plant presence influenced soil redox conditions. Hydrologic history strongly influenced microbial community composition, but plant presence and hydrologic treatment altered microbial function to a great degree. As predicted, plant presence decreased greenhouse gas production in the wetland mesocosms. While previous studies do not often include plants when assessing greenhouse gas emissions, this study highlights that plant-mediated decreases in greenhouse gas emissions are significant. If plant-mediated effects are not considered when estimating the carbon balance of ecosystems, then wetland carbon storage could be underestimated.

scholarly journals Greenhouse Gas Emissions in the Everglades: The Role of Hydrologic Conditions

EDIS ◽  
2009 ◽  
Vol 2009 (5) ◽  
Author(s):  
Alan L. Wright ◽  
K. Ramesh Reddy
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Global Carbon Cycle ◽  
Gas Production ◽  
Gas Emissions ◽  
The Relationship ◽  
Global Carbon ◽  
Hydrologic Conditions ◽  
Soil And Water

SL288, a 5-page illustrated fact sheet by Alan L. Wright and K. R. Reddy, describes the relationship between global warming and increases in greenhouse gas emissions, the role of Everglades wetlands in the global carbon cycle and their contribution to greenhouse gas production, and how hydrologic conditions and eutrophication in the Everglades influence the rates and types of greenhouse gases emitted. Includes references. Published by the UF Department of Soil and Water Science, May 2009. SL288/SS501: Greenhouse Gas Emissions in the Everglades: The Role of Hydrologic Conditions (ufl.edu)

Sign in / Sign up

Export Citation Format

Share Document