Adsorption of gaseous elemental mercury with activated carbon impregnated with ferric chloride

RSC Advances ◽  
2015 ◽  
Vol 5 (32) ◽  
pp. 24899-24907 ◽  
Author(s):  
Xue Qian Wang ◽  
Ping Wang ◽  
Ping Ning ◽  
Yi Xing Ma ◽  
Fei Wang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Ferric Chloride ◽  
Elemental Mercury ◽  
Modified Activated Carbon ◽  
Gaseous Elemental Mercury

Fe-based modified activated carbon prepared by impregnation was used for adsorbents in Hg0 purification.

Removal of elemental mercury by Ce-Mn co-modified activated carbon catalyst

2017 ◽  
Vol 93 ◽  
pp. 62-66 ◽  
Author(s):  
Jiang Wu ◽  
Zhen Zhao ◽  
Tianfang Huang ◽  
Pengfei Sheng ◽  
Jing Zhang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Elemental Mercury ◽  
Carbon Catalyst ◽  
Modified Activated Carbon

Synthesis of CeO2-modified activated carbon spheres by grafting and coordinating reactions for elemental mercury removal

2018 ◽  
Vol 54 (4) ◽  
pp. 2836-2852 ◽  
Author(s):  
Changming Zhang ◽  
Wen Song ◽  
Xiaochao Zhang ◽  
Rui Li ◽  
Songjian Zhao ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Elemental Mercury ◽  
Mercury Removal ◽  
Carbon Spheres ◽  
Modified Activated Carbon ◽  
Activated Carbon Spheres

Synthesis and evaluation of activated carbon spheres with copper modification for gaseous elemental mercury removal

2018 ◽  
Vol 26 (3) ◽  
pp. 693-703 ◽  
Author(s):  
Changming Zhang ◽  
Wen Song ◽  
Xiaochao Zhang ◽  
Rui Li ◽  
Songjian Zhao ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Elemental Mercury ◽  
Mercury Removal ◽  
Carbon Spheres ◽  
Gaseous Elemental Mercury ◽  
Activated Carbon Spheres

Research on Mercury Emissions Regularity and Adsorbing Mercury by Activated Carbon in Coal-fired Power Plants

2011 ◽  
Vol 284-286 ◽  
pp. 301-304 ◽  
Author(s):  
Zhang Xian Liu ◽  
Pei Pei Sun ◽  
Song Tao Chen ◽  
Li Juan Shi
Keyword(s):  
Activated Carbon ◽  
Power Plant ◽  
Removal Efficiency ◽  
Flue Gas ◽  
Power Plants ◽  
Elemental Mercury ◽  
Mercury Pollution ◽  
Anthropogenic Source ◽  
Modified Activated Carbon ◽  
Mercury Emissions

The coal-fired power plant is the main anthropogenic source of mercury pollution. The mercury in flue gas exists as elemental mercury(Hg0), oxidizing state mercury(Hg2+) and particulate mercury(Hgp). Mercury speciation distribution in flue gas was influenced and controled by the factors including conditions of ignition, desulphurization or denitration and Based on the investigation of coal-fired power plant technologies of removing Hg, this research uses the modified activated carbon (MAC) and studies its removal efficiency. Result indicates that the uptake of Hg by MAC was﹥90%.

scholarly journals A field intercomparison of three passive air samplers for gaseous mercury in ambient air

2021 ◽  
Vol 14 (5) ◽  
pp. 3657-3672
Author(s):  
Attilio Naccarato ◽  
Antonella Tassone ◽  
Maria Martino ◽  
Sacha Moretti ◽  
Antonella Macagnano ◽  
...  
Keyword(s):  
Activated Carbon ◽  
National Research Council ◽  
Elemental Mercury ◽  
Weather Conditions ◽  
Ambient Air ◽  
Atmospheric Mercury ◽  
Ease Of Use ◽  
Environmental Research ◽  
Gaseous Elemental Mercury ◽  
Gaseous Mercury

Abstract. Passive air samplers (PASs), which provide time-averaged concentrations of gaseous mercury over the timescale of weeks to months, are promising for filling a gap in the monitoring of atmospheric mercury worldwide. Their usefulness will depend on their ease of use and robustness under field conditions, their availability and affordability, and most notably, their ability to provide results of acceptable precision and accuracy. Here we describe a comparative evaluation of three PASs with respect to their ability to precisely and accurately record atmospheric background mercury concentrations at sites in both southern Italy and southern Ontario, Canada. The study includes the CNR-PAS with gold nanoparticles as a sorbent, developed by the Italian National Research Council, the IVL-PAS using an activated carbon-coated disk, developed by the Swedish Environmental Research Institute, and the MerPAS® using a sulfur-impregnated activated carbon sorbent, developed at the University of Toronto and commercialized by Tekran. Detection limits are deduced from the variability in the amount of mercury quantified in more than 20 field blank samples for each PAS. Analytical and sampling precision is quantified through 22 triplicate deployments for each PAS, ranging in duration from 2 to 12 weeks. Accuracy and bias are assessed through comparison with gaseous elemental mercury concentrations recorded by Tekran 2537 automated mercury analyzers operating alongside the PASs at both locations. The performance of the PASs was significantly better in Italy, with all of them providing concentrations that are not significantly different from the average concentrations of the Tekran 2537 instruments. In Canada, where weather conditions were much harsher and more variable during the February through April deployment period, there are differences amongst the PASs. At both sites, the MerPAS® is currently the most sensitive, precise, and accurate among the three PASs. A key reason for this is the larger size and the radial configuration of the MerPAS®, which results in lower blank levels relative to the sequestered amounts of mercury when compared to the other two PASs, which rely on axial diffusion geometries. Since blank correction becomes relatively smaller with longer deployments, performance tends to be closer amongst the PASs during deployments of 8 and 12 weeks.

scholarly journals A field intercomparison of three passive air samplers for gaseous mercury in ambient air

2020 ◽  
Author(s):  
Attilio Naccarato ◽  
Antonella Tassone ◽  
Maria Martino ◽  
Sacha Moretti ◽  
Antonella Macagnano ◽  
...  
Keyword(s):  
Activated Carbon ◽  
National Research Council ◽  
Elemental Mercury ◽  
Weather Conditions ◽  
Ambient Air ◽  
Atmospheric Mercury ◽  
Ease Of Use ◽  
Environmental Research ◽  
Gaseous Elemental Mercury ◽  
Gaseous Mercury

Abstract. Passive air samplers (PASs), providing time-averaged concentration of gaseous mercury over the time scale of weeks to months, are promising to fill a gap in the monitoring of atmospheric mercury worldwide. Their usefulness will depend on their ease-of-use and robustness under field conditions, their availability and affordability, and most notably, their ability to provide results of acceptable precision and accuracy. Here we describe a comparative evaluation of three PASs with respect to their ability to record precisely and accurately atmospheric background concentrations at sites in both southern Italy and southern Ontario. The study includes the CNR-PAS with gold nanoparticles as a sorbent, developed by the Italian National Research Council, the IVL-PAS using an activated carbon-coated disk, developed by the Swedish Environmental Research Institute, and the MerPAS® using a sulfur-impregnated activated carbon sorbent, developed at the University of Toronto and commercialized by Tekran. Detection limits are deduced from the variability in the amount of mercury quantified in more than 20 field blank samples for each PAS. Analytical and sampling precision is quantified through 22 triplicated deployments for each PAS ranging in length from two to twelve weeks. Accuracy and bias are assessed through comparison with gaseous elemental mercury concentrations recorded by Tekran 2537 automated mercury analyzers operating alongside the PASs at both locations. The performance of the PASs was significantly better in Italy, with all of them providing concentrations that are not statistically significantly different from the average of the active sampling results. In Canada, where weather conditions were much harsher and more variable during the February through April deployment period, differences were observed amongst PASs. At both sites, the MerPAS® is currently the most sensitive, precise and accurate among the three PASs. A key reason for this is the larger size and the radial configuration of the MerPAS®, which results in blank levels that are lower relative to the sequestered amounts of mercury than in the other two PASs, which rely on axial diffusion geometries. Because the blank-correction becomes relatively smaller with longer deployment, sampler performance tends to be better during deployments of 8 and 12 weeks.

REMOVAL OF ARSENATE (V) BY SURFACTANT-MODIFIED ACTIVATED CARBON

2012 ◽  
Vol 11 (8) ◽  
pp. 1433-1438 ◽  
Author(s):  
Jinren Ni ◽  
Guangzhi Zhang ◽  
Hao Hu ◽  
Weiling Sun ◽  
Bin Zhao ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Modified Activated Carbon
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