Fluidized bed combustion

New advancements in renewable energy are great ideas. However, while all the kinks of these new advancements are being worked out, global warming is still hurting the earth. So what do we do in the mean time? Several brilliant minds have been working on this. Instead of looking for entirely new advancements, they are taking what already exists and making it better. For example, burning coal in a cleaner manner. Coal is natural resource commonly used by many nations to support their power

Coal Ash | Regulations and Alternatives | Jonathan Hostettler | Coal Combustion Residuals, often referred to as coal ash, are currently considered exempt wastes under an amendment to RCRA, the Resource Conservation and Recovery Act. They are residues from the combustion of coal in power plants and captured by pollution control technologies, like scrubbers. Potential environmental concerns from coal ash pertain to pollution from impoundment and landfills leaching into ground water and structural

2.4. MUNICPAL SOLID WASTE (MSW) Municipal solid waste (MSW) publicly known as trash or garbage is defined according to the Landfill directive (1999) as waste from households as well as other waste streams that are similar in composition. Generally, MSW can be characterized as waste coming from residential, institutional, commercial and industrial sources and they include; product packaging, kitchen waste, papers, plastics, garden waste etc. MSW does not include construction and demolition debris

Concrete as is well known is a heterogeneous mix of cement, water and aggregates. The admixtures may be added in concrete in order to enhance some of the properties desired specially. In its simplest form, concrete is a mixture of paste and aggregates. Various materials are added such as fly ash, rice husk, and admixture to obtain concrete of desired property. The character of the concrete is determined by quality of the paste. The key to achieving a strong, durable concrete rests in the careful

Acid rain is rain that is more acidic than normal. Acid rain is a complicated problem. Caused by air pollution, acid rain's spread and damage involves weather, chemistry, soil, and the life cycles of plants and animals on the land and from acid rain in the water. Scientists have discovered that air pollution from the burning of fossil fuels is the major cause of acid rain. Power plants and factories burn coal and oil. Power plants use that coal and oil to produce the electricity we need to heat

At the producer level, the possible solutions and/or strategies to mitigate air pollution are vast, however, the problem is getting corporations to agree to these in the first place. When it comes to an issue such as air pollution, producers often do not truly try to make a change, as they see economic gain as the top priority. This, however, is mostly referring to the industrial producers who produce the most air pollution by far; in Canada, they are responsible for around 51% of air pollutants

between gasification and combustion. When a feed gasfire, the oxygen or air is injected in small amount allowing part of the feed to burn completely which supply the required heat and pressure, then, the heat will break down the feed into synthesis gas (Higman & Burgt, 2003). This process consists of six main reactions: Table 1: Gasification main reactions Reaction Process Chemical Formula Change in Enthalpy Gasification with Oxygen C + ½ O2 → CO –3,922 Btu/lb C Combustion with Oxygen C + O2 → CO2

Indirect reuse is discharge of an effluent to impoundment, receiving water or groundwater aquifer for assimilation and withdrawal from downstream. On the international scale, direct non-potable water reuse is currently the dominant mode for supplementing public water supplies for irrigation and other applications, which includes all reuse applications that do not involve either indirect or direct potable use. On the other hand, indirect potable waste water reuse, through waste water effluent disposal

Usage of industrial by-product materials in construction • Preliminary study on strength and durability properties of pH-adjusted fluorogypsum-cement-fly ash blends A preliminary investigation of strength and durability properties of a low-cost concrete-like system made of pH-adjusted fluorogypsum (FG), class C fly ash (FA), and type II Portland cement (PC). A series of compressive strength tests and volumetric expansion measurements were conducted on specimens after 28 days of curing. The experimental

Coal is a fossil fuel that provides energy to be used for multiple purposes, provides many jobs, and supplies the U.S. with a strong export. People in America are unaware of what coal actually is, what it is used for, and what kind of jobs it supplies in the United States. Carbon gives coal most of its energy. Coal is made from peat, which is material that is formed from plants that have accumulated at the bottom of swampy areas. As peat is buried by sedimentary rock and sandstone, moisture is squeezed