Gaseous waste

Article shared by : The waste may be defined as material for which no use or reuse is intended. The wastes generated from the natural Processes and anthropogenic activities which pollute the environment and make the earth an unhealthy planet, is termed as environmental wastes, depending upon the physical states of wastes, these are of three types: (1) Solid waste, ADVERTISEMENTS: (2) Liquid waste (3) Gaseous waste. The accumulation of wastes in different forms causes serious environmental hazards. So it’s high time for the present society to take appropriate steps for the management of waste, possibly through its recycling. The management of waste is another way of conservation of resources. 1. Management of Solid Waste: Solid wastes include solid portions of the discarded material such as glass bottles, crockeries, plastic containers, metals and radioactive wastes. The solid wastes may be biodegradable or non-biodegradable. The biodegradable solid wastes are agricultural wastes, food wastes, paper, food processing by products, manure, yard wastes etc. The non-biodegradable wastes include plastics, metals, synthetic materials, polythene, radioactive wastes etc. The solid waste management involves disposal of solid waste to land (or ocean) or recovering and reproducing useful substances from the waste through recycling. ADVERTISEMENTS: The solid wastes are usually collected by a covered truck. (B) Disposal of Waste: After the collection of wastes, the wastes are disposed of...

Waste Gas One way to use waste gas heat is to generate electricity to meet the boiler house needs such as motor drive of fans, smoke exhaust fans, circulating pumps, etc. From: Low-Temperature Energy Systems with Applications of Renewable Energy, 2020 Related terms: • Science and Technology • Methane • Gas Streams • Adsorption • Bioreactor • Micro-Organism K.L. Tan, K.Y. Foo, in Advanced Materials for Sustainable Environmental Remediation, 2022 3.4.5.1 129/131I 2 and radioactive organic iodine (ROI) Waste gases from nuclear reactors contain radioactive iodine species produced by the fission of the nuclear fuel, 235Uranium, and the long-term exposure to radioactive iodine may induce hypothyroidism and thyroid cancer. MOF-74(Co), HKUST-1, SBMOF-2 and SBMOF-1 showed remarkable iodine vapor adsorption. The molecular uptakes of I 2 onto MOF-74(Co) and HKUST-1 reached 8.48 and 6.89 mmol/g, respectively [ 172, 173]. Within [(ZnI 2) 3(2,4,6-tris(4-pyridyl)-1,3,5-triazine) 2]·5.5(C 6H 5NO 2), the guest I 2 would firstly interact with the I − at the SBU to form I 4 2−, to be transformed into I 3 − [174]. Within the MFM-300(M) series (M=Al, Sc, Fe, In), the guest I 2 would self-assemble into triple-helical chains in the pore channels, due to the extensive host-guest and guest-guest interactions, leading to exceptionally high I 2 uptake [175]. The I 2 capacities ranged from 94 wt% for M=Al to 154 wt% for M=Sc. Irreversible binding through strong bonding or chemical bonding is desirabl...

Gaseous Waste Gaseous wastes represent a resource to tap into and may be directly released during the repurposing process or generated from the decomposition of materials (Kabongo, 2013). From: Circular Economy and Sustainability, 2022 Related terms: • Coal Mine • Energy Engineering • Natural Gas • Environmental Impact • Nuclear Energy • Japan • Air Pollution • Measurer The gaseous waste processing system has the following functions: • to prevent a release of radioactive gases from the components into the building atmosphere • to hold up radioactive gases (Xe, Kr) until they have largely decayed before release to the exhaust air • to maintain the deuterium and hydrogen content below 4% in order to prevent the formation of explosive mixture • to maintain the oxygen below 0.1% in order to prevent corrosion in the different systems which are flushed by the gaseous waste processing system (KPL) • to supply nitrogen for the FA drying and cooling system (FBC) • to maintain a constant pressure in the volume control tank KBA20 BB001. Read more Circular materials—An essay on challenges with current manufacturing and recycling strategies as well as on the potential of life cycle integrated designs Ludovic F. Dumée, in Circular Economy and Sustainability, 2022 3.1Gaseous materials Gaseous wastes represent a resource to tap into and may be directly released during the repurposing process or generated from the decomposition of materials ( Kabongo, 2013). Resolution and capture of toxic...

Gaseous Carbon Waste Resources Approximately 10,000 teragrams (Tg) of waste gas carbon is emitted globally each year (see Carbon utilization technologies focus on conversion of two major carbon resources—carbon dioxide and methane—into useful products. Although some gaseous waste streams contain both of these carbon resources, in general carbon dioxide and methane waste gases differ in terms of their physical and chemical properties and in the locations, magnitudes, and other properties of the waste gas streams. The following sections describe key characteristics of carbon dioxide– and methane-containing waste streams. FIGURE 2-1 Growth in global carbon emissions, 1900-2014. Data from Carbon Dioxide Waste Streams Global emissions of carbon dioxide waste caused by human activities, primarily fossil fuel combustion, have been increasing rapidly. Counter to the global trend, carbon dioxide emissions have been decreasing in the United States, from an estimated peak of 5.38 billion metric tons of carbon dioxide in 2004 (after accounting for uptake by forestry and land use change) to an estimated 4.56 billion metric tons of carbon dioxide in 2016 (approximately 14 percent of the world total of 35 billion metric tons of carbon dioxide, or approximately 10,000 Tg of carbon) ( TABLE 2-1 Gaseous waste streams containing carbon dioxide and methane in the United States in 2016. SOURCE: Waste Gas Approximate Magnitude in the United States Composition Chemical Species Also Found in Wast...

Introduction Waste streams containing carbon dioxide, methane, and biogas 2 emissions from large point sources has received considerable attention as one approach to greenhouse gas mitigation. More recently, strategies that pair carbon capture with utilization have been receiving increased attention from researchers and policy makers as an alternative path for captured carbon dioxide or methane. Carbon utilization is based on the concept that gaseous carbon waste streams can have value as feedstocks for producing fuels, construction materials, plastics, or other useful materials. For the purposes of this report, carbon utilization is defined as the manufacture of valuable products from a gaseous carbon waste feedstock (carbon dioxide and methane) that results in a net reduction of greenhouse gases emitted to the atmosphere. The sources and types of gaseous carbon waste are illustrated in ___________________ FIGURE 1-1 U.S. carbon dioxide and methane emissions sources by mass (in Tg) in 2016. Data from biogas, contains both carbon dioxide and methane and is generated by the degradation of biomass in the absence of oxygen. Mitigating greenhouse gas (GHG) emissions is and will be an important goal for many who are exploring carbon utilization technology development and implementation. There are many scenarios for mitigating GHG emissions to the atmosphere, ranging from decarbonization of energy and other economic sectors to carbon capture with sequestration and/or utilization...

\( \newcommand\) • • • • • • In addition to the kidneys, the liver, skin, and lungs also have important roles in the excretion of waste from the body. Key Points • The lungs, liver, and skin are the main non- renal system organs involved in waste excretion. • The liver is a vital organ with a wide range of functions, including detoxification, protein synthesis, and the production of the biochemicals necessary for digestion. • The liver converts waste into other substances, but does not remove it from the body directly. • The skin has sweat glands that secrete a fluid waste called perspiration, or sweat, which is a pathway for water and ion removal from the body, among other things. • The lungs diffuse gaseous wastes, such as carbon dioxide, from the bloodstream as a normal part of respiration. Key Terms • bilirubin: A bile pigment that is a product of the breakdown of the heme portion of hemoglobin, that is processed into bile by the liver. • urea: A water-soluble organic compound, CO(NH2)2, formed by the metabolism of proteins and excreted in the urine. The liver converts ammonia to urea. Besides the renal system, many other organs and body systems are directly involved in the excretion of waste products. These other systems are responsible for the elimination of the waste products of the metabolism, as well as other liquid and gaseous wastes, but also provide other critical functions. The lungs: The lungs are responsible for the removal of gaseous waste from the body. Si...

LA JOLLA, Calif. — On the grounds of the University of California San Diego health system, cacti and succulents thrive where water-hogging grass once lived. Patches of bare earth await replanting or a blanket of mulch. Recycled “grey” water runs through pale purple pipes. But the real action is inside the hospitals, where another set of pipes carry nitrous oxide. It’s a common anesthetic, also known as laughing gas, and it spews greenhouse gases that linger in the atmosphere for around 114 years. The pipes leak, a lot. Up to 80 percent of the gas can escape. So the San Diego hospitals are planning to shut off those pipes. They’ve already done a successful pilot in the outpatient surgical center; other operating rooms are in the process of switching to storing the gas in less leak-prone tanks or canisters. Sometimes they’ll use more Earth-friendly drugs when appropriate. They’ve already stopped using another common anesthetic gas, called desflurane, which remains in the atmosphere for a decade or more, according to Shira Abeles, an infectious disease physician at UCSD, who recently became its medical director of sustainability. She’s got plenty of science backing these shifts. The American Society of Anesthesiologists “One hour of that volatile agent is equivalent to driving a car 250 miles, a gasoline car, I should say. And there’s very little we do in one hour,” said Joanne Donnelly, who, as director of the nurse anesthesia program at the University of Minnesota, has trai...

Waste Gas One way to use waste gas heat is to generate electricity to meet the boiler house needs such as motor drive of fans, smoke exhaust fans, circulating pumps, etc. From: Low-Temperature Energy Systems with Applications of Renewable Energy, 2020 Related terms: • Science and Technology • Methane • Gas Streams • Adsorption • Bioreactor • Micro-Organism K.L. Tan, K.Y. Foo, in Advanced Materials for Sustainable Environmental Remediation, 2022 3.4.5.1 129/131I 2 and radioactive organic iodine (ROI) Waste gases from nuclear reactors contain radioactive iodine species produced by the fission of the nuclear fuel, 235Uranium, and the long-term exposure to radioactive iodine may induce hypothyroidism and thyroid cancer. MOF-74(Co), HKUST-1, SBMOF-2 and SBMOF-1 showed remarkable iodine vapor adsorption. The molecular uptakes of I 2 onto MOF-74(Co) and HKUST-1 reached 8.48 and 6.89 mmol/g, respectively [ 172, 173]. Within [(ZnI 2) 3(2,4,6-tris(4-pyridyl)-1,3,5-triazine) 2]·5.5(C 6H 5NO 2), the guest I 2 would firstly interact with the I − at the SBU to form I 4 2−, to be transformed into I 3 − [174]. Within the MFM-300(M) series (M=Al, Sc, Fe, In), the guest I 2 would self-assemble into triple-helical chains in the pore channels, due to the extensive host-guest and guest-guest interactions, leading to exceptionally high I 2 uptake [175]. The I 2 capacities ranged from 94 wt% for M=Al to 154 wt% for M=Sc. Irreversible binding through strong bonding or chemical bonding is desirabl...

Article shared by : The waste may be defined as material for which no use or reuse is intended. The wastes generated from the natural Processes and anthropogenic activities which pollute the environment and make the earth an unhealthy planet, is termed as environmental wastes, depending upon the physical states of wastes, these are of three types: (1) Solid waste, ADVERTISEMENTS: (2) Liquid waste (3) Gaseous waste. The accumulation of wastes in different forms causes serious environmental hazards. So it’s high time for the present society to take appropriate steps for the management of waste, possibly through its recycling. The management of waste is another way of conservation of resources. 1. Management of Solid Waste: Solid wastes include solid portions of the discarded material such as glass bottles, crockeries, plastic containers, metals and radioactive wastes. The solid wastes may be biodegradable or non-biodegradable. The biodegradable solid wastes are agricultural wastes, food wastes, paper, food processing by products, manure, yard wastes etc. The non-biodegradable wastes include plastics, metals, synthetic materials, polythene, radioactive wastes etc. The solid waste management involves disposal of solid waste to land (or ocean) or recovering and reproducing useful substances from the waste through recycling. ADVERTISEMENTS: The solid wastes are usually collected by a covered truck. (B) Disposal of Waste: After the collection of wastes, the wastes are disposed of...

Gaseous Waste Gaseous wastes represent a resource to tap into and may be directly released during the repurposing process or generated from the decomposition of materials (Kabongo, 2013). From: Circular Economy and Sustainability, 2022 Related terms: • Coal Mine • Energy Engineering • Natural Gas • Environmental Impact • Nuclear Energy • Japan • Air Pollution • Measurer The gaseous waste processing system has the following functions: • to prevent a release of radioactive gases from the components into the building atmosphere • to hold up radioactive gases (Xe, Kr) until they have largely decayed before release to the exhaust air • to maintain the deuterium and hydrogen content below 4% in order to prevent the formation of explosive mixture • to maintain the oxygen below 0.1% in order to prevent corrosion in the different systems which are flushed by the gaseous waste processing system (KPL) • to supply nitrogen for the FA drying and cooling system (FBC) • to maintain a constant pressure in the volume control tank KBA20 BB001. Read more Circular materials—An essay on challenges with current manufacturing and recycling strategies as well as on the potential of life cycle integrated designs Ludovic F. Dumée, in Circular Economy and Sustainability, 2022 3.1Gaseous materials Gaseous wastes represent a resource to tap into and may be directly released during the repurposing process or generated from the decomposition of materials ( Kabongo, 2013). Resolution and capture of toxic...