scholarly journals Case Study of Viability of Bioenergy Production from Landfill Gas (LFG)

2016 ◽  
Vol 8 (10) ◽  
pp. 165 ◽  
Author(s):  
John Vourdoubas ◽  
Vasiliki K. Skoulou
Keyword(s):  
Power Generation ◽  
Energy Production ◽  
Renewable Energy Sources ◽  
Landfill Gas ◽  
Landfill Site ◽  
Waste To Energy ◽  
Full Potential ◽  
Bioenergy Production ◽  
Crete Island ◽  
Near Future

<p>The landfill gas (LFG) produced from the existing landfill site in Heraklion city, Crete island, Greece, is not currently exploited to its full potential. It could however be exploited for power generation and/or combined heat and power (CHP) production in near future by fully unlocking its energy production potential of the gas generated from the landfill site. This gas (LFG) could feed a 1.6 MW<sub>el</sub> power plant corresponding to the 0.42% of the annually consumed electricity in Crete. The LFG utilization for power generation and CHP production has been studied, and the economics of three energy production scenarios have been calculated. An initial capital investment of 2.4 to 3.2 M €, with payback times (PBT) of approximately 3.5 to 6 years and Net Present Values (NPV) ranging between 2 to 6 M € have been calculated. These values prove the profitability of the attempt of bioenergy production from the biogas produced from the existing landfill site in Heraklion city, Crete. Based on the current economic situation of the country, any similar initiative could positively contribute to strengthening the economy of local community and as a result the country, offering several other socioeconomic benefits like e.g. waste minimization, creation of new job positions etc. by increasing, at the same time, the Renewable Energy Sources (RES) share in energy production sector etc. Apart from the favorable economics of the proposed waste to energy production scheme, all the additional environmental and social benefits make the attempt of a near future exploitation of the landfill gas produced in Heraklion, an attractive short term alternative for waste to bio-energy production.</p>

scholarly journals Waste to energy

2014 ◽  
Vol 126 (2) ◽  
pp. 32 ◽  
Author(s):  
John Sanderson
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Energy Landscape ◽  
Landfill Gas ◽  
Waste To Energy ◽  
Large Energy ◽  
Energy Costs ◽  
Atmospheric Emissions ◽  
Energy Technologies ◽  
Energy Processes

Rising energy costs, increasing landfill prices and the environmental imperative to reduce atmospheric emissions of fossil CO2 are all compelling medium and large energy users throughout Australia to consider decentralised onsite power generation options. In addition to the rollout of household and community-scale photovoltaic (PV) and wind, waste-to-energy technologies such as landfill gas and biogas-based power plant are now well established in Australia. However, various other waste-to-energy technologies, operating elsewhere, have yet to take off. This presentation provided an overview of waste to- energy processes, including examples of currently operating commercial processes as well as recent research to highlight the interesting mix of processes and economics that make up the waste-to-energy landscape.

scholarly journals Evaluation of potential opportunities for electric power generation from landfill gas at “Tsalapitsa”

2014 ◽  
Vol 11 (3) ◽  
pp. 379-390 ◽  
Author(s):  
Ivaylo Ganev ◽  
Iliyana Naydenova
Keyword(s):  
Power Generation ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Detailed Analysis ◽  
Electric Power ◽  
Landfill Gas ◽  
Short Description ◽  
Landfill Site ◽  
Electric Power Generation ◽  
The City

Potential opportunities for electric power generation from landfill gas (LFG) utilization were estimated for the second largest landfill site in Bulgaria, situated near the city of Plovdiv. The work performed was based on detailed analysis of experimentally obtained and model-predicted features of the ?Tsalapitsa? landfill site. The study presents a short description of the site, the global characteristics of the disposed municipal solid waste, and the experimentally obtained methane composition of the LFG. Based on the above described observations, the potential for LFG recovery at ?Tsalapitsa? was determined, together with that for electric power generation for the next 25 years. A set of recommendations was then developed regarding the parameters required for the installation of electric power generation from LFG in Plovdiv.

scholarly journals Emerging Technologies for Waste to Energy Production: A General Review

2021 ◽  
Author(s):  
Kajal Saini ◽  
Keshav Saini
Keyword(s):  
Developing Countries ◽  
Organic Matter ◽  
Energy Production ◽  
Fossil Fuels ◽  
Landfill Gas ◽  
Waste To Energy ◽  
Huge Amount ◽  
Conversion Technologies ◽  
Aerobic And Anaerobic ◽  
Growing Population

Growing population leads to industrialisation and urbanization which in turn generate huge amount of waste that represents a big problem for many developed and developing countries. Emerging solution for this problem can be use of wastes as a sustainable source of energy in the form of heat, electricity, fertilizer and biofuel like bioethanol. Type of technology employed is mainly based on the composition of waste whether it is rich in organic matter like MSW or not. WTE technologies reduce the volume of waste as well as decrease the dependence on fossil fuels for energy generation.This study focuses on overview of various available waste to energy conversion technologies like pyrolysis, gasification, incineration, biochemical treatments like landfill gas, aerobic and anaerobic digestion of wastes.

scholarly journals Energy from Landfill Gas as an Example of Circular Economy

2018 ◽  
Vol 30 ◽  
pp. 03002 ◽  
Author(s):  
Józef Ciuła ◽  
Krzysztof Gaska ◽  
Agnieszka Generowicz ◽  
Gabriela Hajduga
Keyword(s):  
Circular Economy ◽  
Energy Production ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Landfill Gas ◽  
Electric Energy ◽  
Calorific Value ◽  
Energy Sources ◽  
Chp System ◽  
Landfill Biogas

Landfill biogas becomes an important factor in elimination of fossil fuels as a result of fast- growing use of renewable energy sources. The article presents an analysis of operation of the plant where landfill biogas was utilized for energy production. The average annually (gross) productions of electric energy and heat at the plant were 1217 MWh and 1,789 MW, respectively. The average calorific value of biogas was 17 MJ/m3, which corresponds to 4,8 kW/m3. According to the measurements and actual readings acquired during operation of a cogeneration unit, it can be stated that the CHP system has been working within its average operation limits and still has some power reserves to utilize. Therefore, the authors concluded that a landfill can be operated both as a producer and a supplier of prosumer energy.

A comprehensive evaluation and optimal utilization structure of crop straw-based energy production in eastern China

BioResources ◽  
2020 ◽  
Vol 15 (2) ◽  
pp. 2850-2868
Keyword(s):  
Power Generation ◽  
Energy Production ◽  
Optimal Allocation ◽  
Fuzzy Ahp ◽  
Eastern China ◽  
Biomass Energy ◽  
Energy Utilization ◽  
Important Indicator ◽  
Crop Straw ◽  
Bioenergy Production

Crop straw is a major agricultural residue and has been recently promoted as a main source for renewable biomass energy production in China. This study used the fuzzy analytical hierarchy process (Fuzzy AHP) model considering four major indicators to systematically evaluate the performance of four major crop straw energy utilization methods in the eastern Chinese province of Jiangsu. The utilization methods include straw power generation, straw gasification, straw liquefaction, and straw densification into briquette fuel. The results showed that environmental friendliness was the most important indicator that should be considered for straw bioenergy production in the province and that straw densification into briquette fuel was the most suitable straw energy utilization method. Under the policy goal proposed by the Chinese central government to use 20% of all crop straw waste for straw bioenergy production by 2030, the estimated results suggested that the optimal allocation towards straw energy production structure is 40.1% for straw densification into briquette fuel production, 35.3% for straw power generation, 19.6% for straw gasification, and 5% for straw liquefaction. The finding that straw densification into briquette fuel was judged to be the most favorable option could guide policy makers and investors to develop suitable straw energy technologies in Eastern China.

New Compressed Air Energy Storage Concept Improves the Profitability of Existing Simple Cycle, Combined Cycle, Wind Energy, and Landfill Gas Power Plants

2004 ◽  
Author(s):  
Michael Nakhamkin ◽  
Ronald H. Wolk ◽  
Sep van der Linden ◽  
Manu Patel
Keyword(s):  
Energy Storage ◽  
Wind Energy ◽  
Peak Power ◽  
Renewable Energy Sources ◽  
Landfill Gas ◽  
Combined Cycle ◽  
Compressed Air ◽  
Full Potential ◽  
Compressed Air Energy Storage ◽  
Ambient Temperatures

The proposed novel compressed air energy storage (CAES) concept is based on the utilization of capacity reserves of combustion turbine (CT) and combined cycle (CC) plants for the peak power generation, instead of development of highly customized and expensive turbo-machinery trains. These power reserves are particularly high during high ambient temperatures that correspond to typical summer peak power requirements. The stored compressed air will be injected into the CT after the compressor diffuser to supplement the reduced (due to high ambient temperature or altitudes) mass flow, through the turbine to the full potential (typically achieved at low ambient temperatures). The alternative concept, with stored compressed air, is humidification before injection into the CT, this reduces the auxiliary compressor size, the storage volume and associated costs. Power increase of up to 25% can be realized, coincidental with that which is typical for a CAES plant, significant reduction in the heat rate and emissions. The novel CAES concept reduces specific plant costs by a factor of two, which makes it particularly effective for integration with renewable energy sources, like wind energy plants and landfill gas (LFG) plants. The paper also presents an alternative small capacity CAES plant, which is based on using smaller man-made storage facilities (high pressure pipes and/or vessels), either underground or above ground that can be readily constructed at CT sites without specific geological requirements. The latter part of this paper specifically concentrates on integration of CAES with wind and landfill gas (LFG) plants.

scholarly journals Municipal Solid Waste as a Source of Electric Power Generation in Colombia: A Techno-Economic Evaluation under Different Scenarios

Resources ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 51 ◽  
Author(s):  
Santiago Alzate ◽  
Bonie Restrepo-Cuestas ◽  
Álvaro Jaramillo-Duque
Keyword(s):  
Anaerobic Digestion ◽  
Renewable Energy Sources ◽  
Landfill Gas ◽  
Cash Flows ◽  
Economic Benefits ◽  
Waste To Energy ◽  
Urban Centers ◽  
Recovery Potential ◽  
Available Information ◽  
Conversion Technologies

This work evaluates the techno-economic prefeasibility of waste to energy projects in Colombia using four different conversion technologies of incineration, gasification, anaerobic digestion and landfill gas. Three study cases were selected to represent typical urban centers in Colombia, which were namely Guayatá, Andes and Pasto. After feasible technologies were identified for each case, their energy recovery potential was calculated based on the mathematical models and publicly available information about the composition of the wastes produced in these three municipalities. A subsequent economic analysis was conducted by applying the incentives established in Law 1715 for projects involving non-conventional renewable energy sources. The cash flows produced by each technology in the three scenarios were evaluated to obtain the Internal Rate of Return (IRR), which was found to be influenced by the benefits of this legislation. However, the economic benefits were not significant in the small municipality of Guayatá. In turn, in Andes, a high electricity price (100 USD/MWh) would entail a positive IRR of 2.6%. In Pasto, which is the biggest city of the three, the maximum IRR of landfill gas and anaerobic digestion reached 13.59% and 14.27%, respectively. The results show that these types of projects can have positive economic results if tax and government incentives are taken into account.

Waste to Energy Conversion and Sustainable Recovery of Nutrients from Pee Power - Recent Advancements in Urine-Fed MFCs

2020 ◽  
Vol 17 (7) ◽  
pp. 768-779
Author(s):  
Natarajan Narayanan ◽  
Vasudevan Mangottiri ◽  
Kiruba Narayanan
Keyword(s):  
Power Generation ◽  
Microbial Fuel Cells ◽  
Alternative Energy ◽  
Material Selection ◽  
Waste Product ◽  
Resource Recovery ◽  
Operating Conditions ◽  
Waste To Energy ◽  
Animal Origin ◽  
Human Beings

Microbial Fuel Cells (MFCs) offer a sustainable solution for alternative energy production by employing microorganisms as catalysts for direct conversion of chemical energy of feedstock into electricity. Electricity from urine (urine-tricity) using MFCs is a promising cost-effective technology capable of serving multipurpose benefits - generation of electricity, waste alleviation, resource recovery and disinfection. As an abundant waste product from human and animal origin with high nutritional values, urine is considered to be a potential source for extraction of alternative energy in the coming days. However, developments to improve power generation from urine-fed MFCs at reasonable scales still face many challenges such as non-availability of sustainable materials, cathodic limitations, and low power density. The aim of this paper was to critically evaluate the state-of-the-art research and developments in urine-fed MFCs over the past decade (2008-2018) in terms of their construction (material selection and configuration), modes of operation (batch, continuous, cascade, etc.) and performance (power generation, nutrient recovery and waste treatment). This review identifies the preference for sources of urine for MFC application from human beings, cows and elephants. Among these, human urine-fed MFCs offer a variety of applications to practice in the real-world scenario. One key observation is that, effective disinfection can be achieved by optimizing the operating conditions and MFC configurations without compromising on performance. In essence, this review demarcates the scope of enhancing the reuse potential of urine for renewable energy generation and simultaneously achieving resource recovery.

Power Electronics for Grid Integration of Wind Power Generation System

2016 ◽  
Vol 9 ◽  
pp. 10 ◽  
Author(s):  
Michael S Okundamiya
Keyword(s):  
Power Generation ◽  
Wind Energy ◽  
Power Electronics ◽  
Wind Power ◽  
Renewable Energy Sources ◽  
Wind Power Generation ◽  
Generation System ◽  
Electricity Grid ◽  
Power Generation System ◽  
Promising Source

The rising demands for a sustainable energy system have stimulated global interests in renewable energy sources. Wind is the fastest growing and promising source of renewable power generation globally. The inclusion of wind power into the electric grid can severely impact the monetary cost, stability and quality of the grid network due to the erratic nature of wind. Power electronics technology can enable optimum performance of the wind power generation system, transferring suitable and applicable energy to the electricity grid. Power electronics can be used for smooth transfer of wind energy to electricity grid but the technology for wind turbines is influenced by the type of generator employed, the energy demand and the grid requirements. This paper investigates the constraints and standards of wind energy conversion technology and the enabling power electronic technology for integration to electricity grid.

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