نتایج جستجو برای: حذف همزمان nox so2

تعداد نتایج: 56588  

Journal: :Environmental science & technology 2015
Eric S Hittinger Inês M L Azevedo

Bulk energy storage is generally considered an important contributor for the transition toward a more flexible and sustainable electricity system. Although economically valuable, storage is not fundamentally a "green" technology, leading to reductions in emissions. We model the economic and emissions effects of bulk energy storage providing an energy arbitrage service. We calculate the profits ...

2010
Avnish Chauhan Mayank Pawar Rajeev Kumar P. C. Joshi

This paper examines the significant differences in seasonal variations of air pollutants concentrations at urban, industrial, commercial and agricultural areas of Uttarakhand. PM10 (RSPM), suspended particulate matter (SPM), sulphur dioxide (SO2) and oxides of nitrogen (NOx) were collected over four sites in Haridwar and Dehradun Valley, Uttarakhand. The first one, Shivalik Nagar, Haridwar is a...

2008
D. P. Connell

The Greenidge Multi-Pollutant Control Project is being conducted at the 107-MW AES Greenidge Unit 4 as part of the U.S. Department of Energy’s (DOE) Power Plant Improvement Initiative (PPII) to demonstrate an innovative combination of technologies that is well-suited for reducing emissions from the nation’s large fleet (~60 GW) of smaller coal-fired units. The technologies, which include a NOxO...

Journal: :Environmental science & technology 2007
Dalia Patiño-Echeverri Benoit Morel Jay Apt Chao Chen

In a cap-and-trade system, a power plant operator can choose to operate while paying for the necessary emissions allowances, retrofit emissions controls to the plant, or replace the unit with a new plant. Allowance prices are uncertain, as are the timing and stringency of requirements for control of mercury and carbon emissions. We model the evolution of allowance prices for SO2, NOx, Hg, and C...

Journal: :Journal of the Air & Waste Management Association 2004
Chun W Lee Ravi K Srivastava S Behrooz Ghorishi Thomas W Hastings Frank M Stevens

Selective catalytic reduction (SCR) technology increasingly is being applied for controlling emissions of nitrogen oxides (NOx) from coal-fired boilers. Some recent field and pilot studies suggest that the operation of SCR could affect the chemical form of mercury (Hg) in coal combustion flue gases. The speciation of Hg is an important factor influencing the control and environmental fate of Hg...

2013
René Morissette

Combustion trials were conducted with corn stover (CS) and wheat straw (WS) round bales in a 176-kW boiler (model Farm 2000). Hot water (80 °C) stored in a 30,000-L water tank was transferred to a turkey barn through a plate exchanger. Gross calorific value measured in the laboratory was 17.0 and 18.9 MJ/kg DM (dry matter) for CS and WS, respectively. Twelve bales of CS (1974 kg DM total, moist...

2013
Erik C. Rupp Jennifer Wilcox

Coal-fired power plants provided between 45% and 50% of the United States net energy generation in the years between 1999 and 2010 and will continue to be a primary source of electricity into the future. Among the major environmental concerns of coal utilization is the release of mercury (Hg), which was recently regulated by the US EPA in the Mercury and Air Toxics Standards (MATS) ruling in De...

Journal: :Aerosol and Air Quality Research 2022

The seasonal patterns and trends of air pollutants can be used in assessments quality, facilitating authorities’ decisions on policies for monitoring managing. objective this study was to investigate the upper northern Thailand (UNT) from 2004 2018. hourly pollutant concentration data including carbon monoxide (CO), nitrogen dioxide (NO2), oxide (NOx), sulfur (SO2), ozone (O3), particulate matt...

Journal: :Hypertension 2016
Yuanyuan Cai Bo Zhang Weixia Ke Baixiang Feng Hualiang Lin Jianpeng Xiao Weilin Zeng Xing Li Jun Tao Zuyao Yang Wenjun Ma Tao Liu

Hypertension is a major disease of burden worldwide. Previous studies have indicated that air pollution might be a risk factor for hypertension, but the results were controversial. To fill this gap, we performed a meta-analysis of epidemiological studies to investigate the associations of short-term and long-term exposure to ambient air pollutants with hypertension. We searched all of the studi...

2013
Drew T. Shindell

I present a multi-impact economic valuation framework called the Social Cost of Atmospheric Release (SCAR) that extends the Social Cost of Carbon (SCC) used previously for carbon dioxide (CO2) to a broader range of pollutants and impacts. Values consistently incorporate health impacts of air quality along with climate damages. The latter include damages associated with aerosol-induced hydrologi...

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