PCDDs/PCDFs in MSW Emissions: Pre and Post Mercury Control — A Comparison of Profiles

2007 ◽  
Author(s):  
Gary T. Hunt
Keyword(s):  
Gas Phase ◽  
Mercury Removal ◽  
Weighted Sum ◽  
Percent Reduction ◽  
Emissions Reductions ◽  
Mercury Emissions ◽  
Preferential Adsorption ◽  
Carbon Injection ◽  
Mercury Control ◽  
Mass Basis

In recent years since enactment of the NSPS, carbon injection has significantly reduced mercury emissions from MSW units. What is not well known is that carbon injection has also resulted in further unintentional reductions in PCDDs/PCDFs emissions from MSW emissions. These emissions reductions have taken place on a mass basis as well as a TEF weighted basis. The latter have been more pronounced on a percent reduction basis owing to changes in the PCDDs/PCDFs profile directly attributable to preferential adsorption of selected 2,3,7,8-substituted congeners on activated carbon injected in the gas stream for mercury removal. These lower molecular weight congeners are typically present in the gas phase and contribute more significantly to the TEF weighted sum.

A Carbon Injection System on a COHPAC-Equipped Waste-to-Energy Facility

2001 ◽  
Author(s):  
Thomas S. Honeycheck ◽  
Gregory H. Gesell ◽  
Mark C. Turner
Keyword(s):  
Flue Gas ◽  
Municipal Waste ◽  
Waste To Energy ◽  
Injection System ◽  
Mercury Emissions ◽  
Gas Cleaning ◽  
Energy Facility ◽  
Carbon Injection ◽  
Maximum Achievable Control Technology ◽  
Municipal Waste Combustor

Abstract The SEMASS Resource Recovery Facility (SEMASS) is a processed refuse fuel (PRF) waste-to-energy plant serving much of Southeastern Massachusetts. Units 1 and 2 at the plant were designed with spray dryer absorbers (SDAs) and electrostatic precipitators (ESPs). A review of historical data from the plant indicated that in order to comply with the Environmental Protection Agency’s Municipal Waste Combustor (MWC) Rule (40 CFR Part 60, Subpart Cb), which is known as the Maximum Achievable Control Technology (MACT), improved emission performance would be required from the flue gas cleaning system on Units 1 and 2. A pilot test program was conducted which led to the installation of COHPAC, or COmpact Hybrid PArticulate Collector units (i.e. flue gas polishing devices) downstream of the ESPs on these two combustion trains. The COHPAC units were successfully started up in June, 2000. In addition to these modifications, it was determined that further control of mercury emissions would be required. A system to inject powdered activated carbon into the flue gas was added to the plant. This paper describes that carbon injection system. A comparison between test data obtained at SEMASS is made with predictions based upon the EPA testing at the Ogden Martin Systems of Stanislaus, Inc. Municipal Waste Combustor Facility near Crows Landing, California and the EPA testing at the Camden County Municipal Waste Combustor in Camden, New Jersey. These are waste-to-energy plants, the former utilizing an SDA and a baghouse while the latter contains an SDA followed by an ESP. In addition, the effect of carbon injection location upon mercury reduction was investigated. The results of that study are also included.

Gas-phase mercury removal by carbon-based sorbents

2003 ◽  
Vol 84 (1-3) ◽  
pp. 197-206 ◽  
Author(s):  
Si-Hyun Lee ◽  
Young-Ok Park
Keyword(s):  
Gas Phase ◽  
Mercury Removal ◽  
Carbon Based

DOE/NETL's Phase II Mercury Control Technology Field Testing Program:  Preliminary Economic Analysis of Activated Carbon Injection

2007 ◽  
Vol 41 (4) ◽  
pp. 1365-1371 ◽  
Author(s):  
Andrew P. Jones ◽  
Jeffrey W. Hoffmann ◽  
Dennis N. Smith ◽  
Thomas J. Feeley ◽  
James T. Murphy
Keyword(s):  
Activated Carbon ◽  
Economic Analysis ◽  
Phase Ii ◽  
Field Testing ◽  
Control Technology ◽  
Testing Program ◽  
Carbon Injection ◽  
Mercury Control

Temporal and Spatial Trends in Freshwater Fish Tissue Mercury Concentrations Associated with Mercury Emissions Reductions

2014 ◽  
Vol 48 (4) ◽  
pp. 2193-2202 ◽  
Author(s):  
Michael S. Hutcheson ◽  
C. Mark Smith ◽  
Jane Rose ◽  
Carol Batdorf ◽  
Oscar Pancorbo ◽  
...  
Keyword(s):  
Freshwater Fish ◽  
Fish Tissue ◽  
Emissions Reductions ◽  
Mercury Emissions ◽  
Spatial Trends ◽  
Temporal And Spatial ◽  
Temporal And Spatial Trends

Gas-phase elemental mercury removal using ammonium chloride impregnated sargassum chars

2018 ◽  
Vol 40 (15) ◽  
pp. 1923-1936 ◽  
Author(s):  
Wei Yang ◽  
Ye Shan ◽  
Shuai Ding ◽  
Xuan Han ◽  
Yangxian Liu ◽  
...  
Keyword(s):  
Gas Phase ◽  
Ammonium Chloride ◽  
Elemental Mercury ◽  
Mercury Removal

scholarly journals Update of mercury emissions from China's primary zinc, lead and copper smelters, 2000–2010

2012 ◽  
Vol 12 (7) ◽  
pp. 18207-18242
Author(s):  
Q. R. Wu ◽  
S. X. Wang ◽  
L. Zhang ◽  
J. X. Song ◽  
H. Yang ◽  
...  
Keyword(s):  
Flue Gas ◽  
Nonferrous Metal ◽  
Atmospheric Mercury ◽  
Gansu Province ◽  
Mercury Removal ◽  
Smelting Process ◽  
Air Pollution Control ◽  
Mercury Emissions ◽  
Control Devices ◽  
Air Pollution Control Devices

Abstract. China is the largest anthropogenic mercury emitter in the world, where primary nonferrous metal smelting process is regarded as one of the most significant emission sources. In this study, atmospheric mercury emissions from primary zinc, lead and copper smelters in China during 2000–2010 were estimated using a technology-based methodology with comprehensive consideration of mercury concentration in concentrates, smelting process, mercury removal efficiencies of air pollution control devices (APCDs) and installation rate of a certain type of APCD combination. Our study indicated that atmospheric mercury emission from nonferrous metal smelters in 2000, 2003, 2005, 2007 and 2010 was 67.6, 100.1 86.7 80.6 and 72.5 t, respectively. In 2010, the mercury in metal concentrates consumed by primary zinc, lead and copper smelters were 543 t. The mercury emitted into atmosphere, fly ash, other solids, waste water and acid was 72.5, 61.5, 2.0, 3774 and 27.2 t, respectively. Mercury retrieved directly from flue gas as byproduct of nonferrous metal smelting was about 2.4 t. The amounts of mercury emitted into atmosphere were 39.4, 30.6 and 2.5 t from primary zinc, lead and copper smelters, respectively. The largest amount of mercury was emitted from Gansu province, followed by Henan, Yunnan, Hunan, Inner Mongolia and Shaanxi provinces. The average mercury removal efficiency was 90.5%, 71.2% and 91.8% in zinc, lead, and copper smelters, respectively.

scholarly journals Tackling elemental mercury removal from the wet-gas phase by enhancing the performance of redox-active copper-based adsorbents utilising an operando pre-heating system

2020 ◽  
Vol 5 (9) ◽  
pp. 1647-1657
Author(s):  
Syamzari Rafeen ◽  
Rafin Ramli ◽  
Geetha Srinivasan
Keyword(s):  
Natural Gas ◽  
Gas Phase ◽  
Elemental Mercury ◽  
Heating System ◽  
Mercury Removal ◽  
Wet Gas ◽  
Redox Active ◽  
System P ◽  
Copper Coordination

Smart tuning of copper coordination using contaminant in dynamic natural gas feed to capture mercury – turning toxic to sustainable.

Porous sulphur copolymer for gas-phase mercury removal and thermal insulation

2018 ◽  
Vol 332 ◽  
pp. 1-7 ◽  
Author(s):  
Akhil Mammoottil Abraham ◽  
S Vijay Kumar ◽  
Saeed M. Alhassan
Keyword(s):  
Gas Phase ◽  
Thermal Insulation ◽  
Mercury Removal
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