International Journal of Electrical Components and Energy Conversion
IGCC power plant is the one in which coal is gasified and then the energy is used to drive both g... more IGCC power plant is the one in which coal is gasified and then the energy is used to drive both gas turbine and steam turbines to produce energy. As the industrial revolution is progressing more and more carbon dioxide is being added to the environment every single day which is leading the world towards the biggest environmental hazards we have ever faced, global warming being the leading consequence, so capturing the carbon dioxide which is emitted from sources like power plants is of the utmost importance. The main idea of this research paper is to provide an innovative way of capturing carbon dioxide emissions from a coal powered power plant. This research paper discusses the design and modeling of a carbon capturing membrane which is being used in an IGCC power plant to capture carbon dioxide from its exhaust gases. The modeling and design of the membrane is done using CFD software namely Ansys workbench. The design and modeling is done using two simulations, one describes the design and structure and the second one demonstrates the working mechanism of the membrane. This paper also briefly discusses IGCC which is environmentally benign compared to traditional pulverized coal-fired power plants, and economically feasible compared to the natural gas combine cycle (NGCC). IGCC power plant is more diverse and offers flexibility in fuel utility. This paper also incorporates a PFD of integrated gasification power plant with the carbon capturing membrane unit integrated in it.
The Global plastic production has reached up to 300 million tons in 2015, and waste management ha... more The Global plastic production has reached up to 300 million tons in 2015, and waste management has become a serious issue especially in middle and low income countries such as Pakistan. Pakistan, which is producing 1.32 million ton/year of plastic waste, is also facing the issue of environmental pollution as well as unadequate waste dumping ability due to surge in urban population. Among various waste management techniques, pyrolysis has been receiving attention because it offers solution to two most critical problems, energy shortage and environmental pollution. The main purpose of this paper is to produce fuel oil by waste plastic through the pyrolysis process and its cost estimation. Waste plastic decomposes in a various fraction of hydrocarbons catalytically at 400oC. These hydrocarbons are separated through distillation columns and phase separators as light and heavy fuel oil and wax. The economic analysis shows that the estimated total capital investment required for a pyrolys...
ABSTRACT Graphene (G), a two-dimensional carbon layer, is regarded as twenty-first century wonder... more ABSTRACT Graphene (G), a two-dimensional carbon layer, is regarded as twenty-first century wonder material and due to its remarkable physio-chemical properties it has been explored for application in various science and technology areas. In environmental remediation field, the quest for eco-friendly and green processes has put a growing emphasis on solar-driven photocatalysis. The conventional semiconductor photocatalysts suffer with the shortcoming of electron–hole pair recombination, aggregation and wide band gap, which inhibit their commercialization. Coupling of graphene derivatives, such as graphene oxide (GO) and reduced graphene oxide (RGO), with semiconductors (TiO2, ZnO) offers a considerable potential to enhance the photocatalytic efficiency by providing higher surface area, stability, and fast electron conduction ability. Numerous papers have been published in recent years which couples Graphene, GO and RGO with different semiconductors for photocatalytic degradation of various organic pollutants. So, it is high time a comprehensive review should be presented to understand the potential and future prospects of photocatalysis in water treatment. This article aims to provide a critical review about recent progress in fabrication methods, modification techniques (non-metal or metal doping), efficiency and mechanism for organic pollutant photo degradation and visible light activation of graphene-based photocatalysts. The role of graphene in photocatalysis and organic pollutant degradation mechanism is summarized. Moreover, novel graphene and layered double hydroxide (LDH) composites are also discussed as potential candidates in wastewater treatment. Furthermore, future prospects and challenges such as separation, recyclability and health hazards of these composites are discussed to provide an outlook about their practical application in water purification. GRAPHICAL ABSTRACT
International Journal of Electrical Components and Energy Conversion
IGCC power plant is the one in which coal is gasified and then the energy is used to drive both g... more IGCC power plant is the one in which coal is gasified and then the energy is used to drive both gas turbine and steam turbines to produce energy. As the industrial revolution is progressing more and more carbon dioxide is being added to the environment every single day which is leading the world towards the biggest environmental hazards we have ever faced, global warming being the leading consequence, so capturing the carbon dioxide which is emitted from sources like power plants is of the utmost importance. The main idea of this research paper is to provide an innovative way of capturing carbon dioxide emissions from a coal powered power plant. This research paper discusses the design and modeling of a carbon capturing membrane which is being used in an IGCC power plant to capture carbon dioxide from its exhaust gases. The modeling and design of the membrane is done using CFD software namely Ansys workbench. The design and modeling is done using two simulations, one describes the design and structure and the second one demonstrates the working mechanism of the membrane. This paper also briefly discusses IGCC which is environmentally benign compared to traditional pulverized coal-fired power plants, and economically feasible compared to the natural gas combine cycle (NGCC). IGCC power plant is more diverse and offers flexibility in fuel utility. This paper also incorporates a PFD of integrated gasification power plant with the carbon capturing membrane unit integrated in it.
The Global plastic production has reached up to 300 million tons in 2015, and waste management ha... more The Global plastic production has reached up to 300 million tons in 2015, and waste management has become a serious issue especially in middle and low income countries such as Pakistan. Pakistan, which is producing 1.32 million ton/year of plastic waste, is also facing the issue of environmental pollution as well as unadequate waste dumping ability due to surge in urban population. Among various waste management techniques, pyrolysis has been receiving attention because it offers solution to two most critical problems, energy shortage and environmental pollution. The main purpose of this paper is to produce fuel oil by waste plastic through the pyrolysis process and its cost estimation. Waste plastic decomposes in a various fraction of hydrocarbons catalytically at 400oC. These hydrocarbons are separated through distillation columns and phase separators as light and heavy fuel oil and wax. The economic analysis shows that the estimated total capital investment required for a pyrolys...
ABSTRACT Graphene (G), a two-dimensional carbon layer, is regarded as twenty-first century wonder... more ABSTRACT Graphene (G), a two-dimensional carbon layer, is regarded as twenty-first century wonder material and due to its remarkable physio-chemical properties it has been explored for application in various science and technology areas. In environmental remediation field, the quest for eco-friendly and green processes has put a growing emphasis on solar-driven photocatalysis. The conventional semiconductor photocatalysts suffer with the shortcoming of electron–hole pair recombination, aggregation and wide band gap, which inhibit their commercialization. Coupling of graphene derivatives, such as graphene oxide (GO) and reduced graphene oxide (RGO), with semiconductors (TiO2, ZnO) offers a considerable potential to enhance the photocatalytic efficiency by providing higher surface area, stability, and fast electron conduction ability. Numerous papers have been published in recent years which couples Graphene, GO and RGO with different semiconductors for photocatalytic degradation of various organic pollutants. So, it is high time a comprehensive review should be presented to understand the potential and future prospects of photocatalysis in water treatment. This article aims to provide a critical review about recent progress in fabrication methods, modification techniques (non-metal or metal doping), efficiency and mechanism for organic pollutant photo degradation and visible light activation of graphene-based photocatalysts. The role of graphene in photocatalysis and organic pollutant degradation mechanism is summarized. Moreover, novel graphene and layered double hydroxide (LDH) composites are also discussed as potential candidates in wastewater treatment. Furthermore, future prospects and challenges such as separation, recyclability and health hazards of these composites are discussed to provide an outlook about their practical application in water purification. GRAPHICAL ABSTRACT
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