Indoor air quality - Wikipedia

Indoor air quality (IAQ) is the air quality within and around buildings and structures.IAQ is known to affect the health, comfort, and well-being of building occupants. Poor indoor air quality has been linked to sick building syndrome, reduced productivity, and impaired learning in schools.. IAQ can be affected by gases (including carbon monoxide, radon, volatile organic compounds

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4 Environmental Impacts of Renewable Electricity

An LCA estimates resource requirements, energy use, and environmental impacts of products or services at all life stages. The estimates may be derived from detailed, bottom-up analyses of mining, manufacturing, transport, construction, operations, and disposal processes or from top-down analyses based on national-scale economic input/output models.

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The Design of an Urban Roadside Automatic Sprinkling

Jul 23, 2014 · The objective of this research paper is to describe the system architecture for an urban roadside automatic mist-generating system. Its primary purpose is to mitigate particulate matter especially PM<sub>2.5&#x2013;10</sub>. In this paper, four graphs are provided to exhibit the constituent elements of this system. This paper also discusses the functional extensions of this

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Civil Cases and Settlements | Enforcement | US EPA

Mar 08, 2016 · (01/02/13- ATLANTA) The U.S. Environmental Protection Agency and the U.S. Department of Justice announce that Kentucky Utilities Company will spend $57 million to install a sulfuric acid mist emission control system, replace a coal-fired boiler, and pay a civil penalty of $300,000 to resolve alleged Clean Air Act violations (CAA) at the Ghent

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Agricultural Anaerobic Digesters: Design and Operation

Dec 01, 2016 · During the summer/fall 1977 operation, when care was taken to prevent long hay from entering the digester, there was no substantial crust formation. Biogas output system. In the Penn State system, gas in excess of that needed for digester agitation was taken from the pressure side of the gas pump for use in the boiler and elsewhere (Figure 42).

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(PDF) The Environmental Impacts of Packaging

The U.S. must begin to consider actions that will reduce the negative environmental impacts produced by the present packaging systems. Observers are, for example, beginning to see limits to the

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Passive ventilation - Wikipedia

Passive ventilation is the process of supplying air to and removing air from an indoor space without using mechanical systems.It refers to the flow of external air to an indoor space as a result of pressure differences arising from natural forces. There are two types of natural ventilation occurring in buildings: wind driven ventilation and buoyancy-driven ventilation.

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Federal Register :: Revised Cross-State Air Pollution Rule

Apr 30, 2021 · First, EPA explained that there was greater uncertainty in EPA's assessment of non-EGU NO X mitigation potential, and that more time would be required for states and EPA to improve non-EGU point source data and pollution control assumptions before it could develop emission reduction obligations based on that data. See 81 FR 74542.

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Clean Fuel Standard: proposed regulatory approach - Canada.ca

Part II: Proposed regulatory approach 2. Application and exemptions 2.1 Parties regulated under the Clean Fuel Standard: primary suppliers The Clean Fuel Standard regulations will require those who produce and import liquid fossil fuels in Canada to reduce the carbon intensity of the liquid fossil fuels they produce and import annually.

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273 questions with answers in WATER POLLUTION | Science topic

May 11, 2021 · The European Parliament has approved a ban on single-use plastics by 2021. Currently there is a growing concern about the environmental and

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