scholarly journals Analysis of Poultry Litter as a Fuel Source in Cogeneration

Author(s):  
Nilesh C. Dhavane ◽  
Dr. Parashuram R. Chitragar

The aim of this research work is to utilize the available poultry litter as a substitutional fuel in cogeneration power plant in the sugar factory. In India, tons of poultry litter is damaging the fields due to uncontrolled disposal of poultry litter as fertilizer. It also contributes to the emission of greenhouse gases namely methane and carbon dioxide thus polluting the atmosphere. About 100 tons per day manure can be collected which can be used as fuel source at the location selected. With this amount of fuel available, energy can be generated in the cogeneration power plant. ost feasible of this work that can be implemented in cogeneration power plant in sugar factory.

2018 ◽  
Vol 25 (3) ◽  
pp. 383-394 ◽  
Author(s):  
Marta Marszałek ◽  
Zygmunt Kowalski ◽  
Agnieszka Makara

Abstract Pig slurry is classified as a natural liquid fertilizer, which is a heterogeneous mixture of urine, faeces, remnants of feed and technological water, used to remove excrement and maintain the hygiene of livestock housing. The storage and distribution of pig slurry on farmland affect the environment as they are associated with, among others, the emission of various types of gaseous pollutants, mainly CH4, CO2, N2O, NH3, H2S, and other odorants. Methane (CH4), carbon dioxide (CO2) and nitrous oxide (N2O) are greenhouse gases (GHGs) which contribute to climate change by increasing the greenhouse effect. Ammonia (NH3) and hydrogen sulfide (H2S) are malodorous gases responsible for the occurrence of odour nuisance which, due to their toxicity, may endanger the health and lives of humans and animals. NH3 also influences the increase of atmosphere and soil acidification. The article presents the environmental impact of greenhouse gases and odorous compounds emitted from pig slurry. Key gaseous atmospheric pollutants such as NH3, H2S, CH4, CO2 and N2O have been characterized. Furthermore, methods to reduce the emission of odours and GHGs from pig slurry during its storage and agricultural usage have been discussed.


Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1282
Author(s):  
Isabel Barroso-Martín ◽  
Antonia Infantes-Molina ◽  
Fatemeh Jafarian Fini ◽  
Daniel Ballesteros-Plata ◽  
Enrique Rodríguez-Castellón ◽  
...  

The climate situation that the planet is experiencing, mainly due to the emission of greenhouse gases, poses great challenges to mitigate it. Since CO2 is the most abundant greenhouse gas, it is essential to reduce its emissions or, failing that, to use it to obtain chemicals of industrial interest. In recent years, much research have focused on the use of CO2 to obtain methanol, which is a raw material for the synthesis of several important chemicals, and dimethyl ether, which is advertised as the cleanest and highest efficiency diesel substitute fuel. Given that the bibliography on these catalytic reactions is already beginning to be extensive, and due to the great variety of catalysts studied by the different research groups, this review aims to expose the most important catalytic characteristics to take into account in the design of silica-based catalysts for the conversion of carbon dioxide to methanol and dimethyl ether.


2021 ◽  
Vol 16 (3) ◽  
pp. 38-42
Author(s):  
Ramil Khafizov ◽  
Farit Khaliullin ◽  
Kamil Khafizov ◽  
Azat Nurmiev ◽  
Stanislav Sinickiy ◽  
...  

The article provides an overview of the state of the art related to the emission of greenhouse gases into the atmosphere during the operation of mobile machine-tractor units in the agricultural sector of the economy. Sources of greenhouse gas emissions are considered. It was revealed that a huge amount of greenhouse gases are emitted into the atmosphere due to intensive soil cultivation, while the emission of CO2, NOX and CH4 is many times higher than the emission of these gases from fuel combustion in the engines of machine and tractor units. However, taking into account the large areas of arable land in the Russian Federation, reducing the emission of greenhouse gases with exhaust gases (OG) of engines is an urgent task. The article discusses the composition of the exhaust gases of a diesel engine and methods of binding environmentally harmful substances, considers ways to reduce the emission of toxic components of exhaust gas. It was revealed that of the gases contributing to the formation of the greenhouse effect on the ground, up to 10% of exhaust gases contain carbon dioxide. In this regard, the ways of reducing the emission of carbon dioxide from the engines of machine-tractor units are being analyzed, the tasks of research on the binding of CO2 in soil and plants are set, by using some chemical fertilizers as substitutes, for heating the soil at the time of sowing and activating the vital activity of beneficial microorganisms in it. It is stated that one of the ways to reduce CO2 emissions into the atmosphere is to search for ways to reduce direct and indirect energy costs during the operation of machine-tractor units, including by reducing crop losses due to incorrectly selected parameters of tractors and agricultural machines, neg


Author(s):  
Fauzia Ghani ◽  
Komal Ashraf Qureshi

This chapter focuses on the case study of China, which is facing grave issues regarding environment and global warming. Hence, the “Airpocalypse” in China led to need and debate about the sustainability of the environment. In this chapter, an effort has been made to analyze the environmental sustainability risk which the country of China can have for the increasing rate of global warming, and how this part of region can have a transnational impact on other neighboring countries when it comes to the cause of making environment pure from pollutants, carbon dioxide, and coal emissions. The methodology of this research is qualitative, descriptive, and analytical in nature. This chapter includes the variable of environmental sustainability which is dependent on the energy consumption of industries of China involved in emission of greenhouse gases.


2021 ◽  
Vol 7 (1) ◽  
pp. 1-9
Author(s):  
Helga Kristjánsdóttir ◽  
Sigríður Kristjánsdóttir

This article analyses ways to maintain reservoir sustainability in the area surrounding the Blue Lagoon in Iceland, near the urban settlement of Grindavík on the Reykjanes Peninsula in Iceland. The Svartsengi geothermal power plant operations have pioneered the simultaneous production of electricity and hot water from a geothermal reservoir. The Blue Lagoon is a warm geothermal pool using brine from the power plant. This paper reports on the processes and procedures at the Blue Lagoon and the Svartsengi power station, aimed at increasing sustainability of the geothermal resource by injecting the geothermal brine back to ground, to ensure the geothermal resource sustainability in the area. This paper also discusses and explains in details the reduction of greenhouse gas emissions from geothermal plant operations in Iceland. When the steam from a geothermal reservoir emerges from the ground, it comes up with enough energy to drive turbine generators for electricity production. However, this involves releasing several greenhouse gases into the atmosphere, including hydrogen sulphide (H2S) and carbon dioxide (CO2). This research spotlights a geothermal power plant in Hellisheiði, Iceland, and the use of the CarbFix procedure of capturing and storing carbon dioxide, reducing CO2 emissions from the harnessing of geothermal resources for electricity. CarbFix is a carbon capture and storage (CCS) or carbon mineralization procedure aimed at binding CO2 to rock. This procedure has been used at Hellisheiði power plant for the past decade in Iceland. Scientists have also developed the SulFix procedure, to capture sulphate H2S in ground. These procedures, SulFix and CarbFix, reduce outlet of greenhouse gases by storing them in basalt rock – also referred to as mineral carbonation or carbon capture and storage. This involves dissolving the greenhouse gases in water, and re-injecting them back into the ground through boreholes, in Hellisheiði. This current research also shows the geology in these areas and reports on calculations that have found re-injection of greenhouse gasses to ground to be economically feasible. The paper covers several scenarios that have already been tested to determine the financial feasibility of capture and storage. These have involved calculating the estimated internal rate of return (IRR), the return on investment (ROI) and the present value (NPV). Economic calculations have been made, showing the CarbFix project to be a feasible option contributing to decreased greenhouse gas emissions.


Author(s):  
I. Plūme

The incorrect biomass composting improperly results in considerable emission of greenhouse gases, loss of effluent and composting heat into environment. The composting heat and gases utilisation is especially suitable for plant enrichment and heating of greenhouses. The mathematical model is worked out for assessment of energy effectiveness and sustainability of biomass composting process. Coefficient of energy effectiveness for traditional litter manure composting technologies is 0.45 and can be increased up to 1.50 if the effluent, composting heat, carbon dioxide and ammonia were utilised during the composting cycle.


2008 ◽  
Vol 05 (10) ◽  
pp. 21-25
Author(s):  
Jaqueline Keiko TANIMOTO ◽  
Karla Amâncio Pinto FIELDS

The garbage has caused several problems within a city, is the visual pollution, in addition to contamination from the decomposition of organic matter, which generates the effluent called slurry which contaminates the soil and water in addition to the emission of greenhouse gases such as methane, sulfidric acid, ammonia and carbon dioxide gas. Reflecting on the various problems in a city that affect the environment, propose to study the composition of the garbage generated in the home, and the reactions to the formation of the same, the decomposition of organic matter and environmental impacts. Therefore, the mini course can be well used by the students, who did not have a broad view of chemistry and its applications in daily life by increasing their knowledge conceptual, in addition to awakening the motivation through the same methods that interest them.


2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Romdhane Ben Slama

The global warming which preoccupies humanity, is still considered to be linked to a single cause which is the emission of greenhouse gases, CO2 in particular. In this article, we try to show that, on the one hand, the greenhouse effect (the radiative imprisonment to use the scientific term) took place in conjunction with the infrared radiation emitted by the earth. The surplus of CO2 due to the combustion of fossil fuels, but also the surplus of infrared emissions from artificialized soils contribute together or each separately,  to the imbalance of the natural greenhouse effect and the trend of global warming. In addition, another actor acting directly and instantaneously on the warming of the ambient air is the heat released by fossil fuels estimated at 17415.1010 kWh / year inducing a rise in temperature of 0.122 ° C, or 12.2 ° C / century.


2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Angela Margaret Evans

Abstract Background Healthcare aims to promote good health and yet demonstrably contributes to climate change, which is purported to be ‘the biggest global health threat of the 21st century’. This is happening now, with healthcare as an industry representing 4.4% of global carbon dioxide emissions. Main body Climate change promotes health deficits from many angles; however, primarily it is the use of fossil fuels which increases atmospheric carbon dioxide (also nitrous oxide, and methane). These greenhouse gases prevent the earth from cooling, resulting in the higher temperatures and rising sea levels, which then cause ‘wild weather’ patterns, including floods, storms, and droughts. Particular vulnerability is afforded to those already health compromised (older people, pregnant women, children, wider health co-morbidities) as well as populations closer to equatorial zones, which encompasses many low-and-middle-income-countries. The paradox here, is that poorer nations by spending less on healthcare, have lower carbon emissions from health-related activity, and yet will suffer most from global warming effects, with scant resources to off-set the increasing health care needs. Global recognition has forged the Paris agreement, the United Nations sustainable developments goals, and the World Health Organisation climate change action plan. It is agreed that most healthcare impact comes from consumption of energy and resources, and the production of greenhouse gases into the environment. Many professional associations of medicine and allied health professionals are advocating for their members to lead on environmental sustainability; the Australian Podiatry Association is incorporating climate change into its strategic direction. Conclusion Podiatrists, as allied health professionals, have wide community engagement, and hence, can model positive environmental practices, which may be effective in changing wider community behaviours, as occurred last century when doctors stopped smoking. As foot health consumers, our patients are increasingly likely to expect more sustainable practices and products, including ‘green footwear’ options. Green Podiatry, as a part of sustainable healthcare, directs us to be responsible energy and product consumers, and reduce our workplace emissions.


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