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Szeliga Z, Honus S, Vavrova Z, Jirsa P, Vesely V, Carsky M, Vujanovic M, Regucki P, Krzyzynska R. Effect of HCl on a sorption of mercury from flue gas evolved during incineration of hospital waste using entrained flow adsorbers. WASTE MANAGEMENT (NEW YORK, N.Y.) 2022; 140:74-80. [PMID: 35066454 DOI: 10.1016/j.wasman.2022.01.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 12/13/2021] [Accepted: 01/03/2022] [Indexed: 06/14/2023]
Abstract
Small incinerators of dangerous wastes, including those from hospitals, are a source of emissions of highly variable compositions and concentrations. Mercury is a very dangerous pollutant causing neurotoxicity in human organism. The effect of HCl concentration on adsorption of mercury on activated carbon-based sorbent was studied for the incineration of hospital waste in a 250 kg/h capacity unit. The maximum concentration of adsorbed mercury on activated carbon was determined as a function of concentration of Hg and HCl in combustion products. Based on the expected chemical reactions and the thermodynamics, the adsorption of mercury from flue gases in oxidising atmosphere has been explained. The activated carbon-based sorbent was also capable of adsorbing acid gases like HCl. The efficiency of removal of mercury from combustion products increased up to 85-87% with the concentration of HCl in flue gases. The addition of calcium hydroxide increased the amount of mercury trapped on the sorbent only by about 10%. These tests proved that an entrained flow adsorber is a suitable unit for the removal of mercury from combustion products. The consumption of activated carbon for the mercury removal was from 0.1 to 0.15 mg/Nm3 of flue gas. The advantage of an entrained flow adsorber lies in its easy continuous operation. Therefore, it is a suitable unit for small and medium size incinerators of municipal and hospital waste.
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Affiliation(s)
- Zbyszek Szeliga
- VSB Technical University Ostrava, Centre ENET, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic; VSB-Technical University Ostrava, Faculty of Mechanical Engineering, Department of Energy, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
| | - Stanislav Honus
- VSB Technical University Ostrava, Centre ENET, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic; VSB-Technical University Ostrava, Faculty of Mechanical Engineering, Department of Energy, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
| | - Zuzana Vavrova
- VSB Technical University Ostrava, Centre ENET, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
| | - Petr Jirsa
- SMS CZ Rokycany, Square U Saske brany 12, 337 01 Rokycany-Stred, Czech Republic
| | - Vaclav Vesely
- Institute of Chemical Processes Fundamentals of the CAS, v.v.i., Rozvojova 135/1, 165 02 Praha 6, Czech Republic
| | - Milan Carsky
- VSB-Technical University Ostrava, Faculty of Mechanical Engineering, Department of Energy, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic; Institute of Chemical Processes Fundamentals of the CAS, v.v.i., Rozvojova 135/1, 165 02 Praha 6, Czech Republic.
| | - Milan Vujanovic
- Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lucica 5, 10000 Zagreb, Croatia
| | - Paweł Regucki
- Wrocław University of Technology, Faculty of Mechanical and Power Engineering, Wybrzeze Wyspianskiego 27, 50-370 Wrocław, Poland
| | - Renata Krzyzynska
- Faculty of Environmental Engineering, Wroclaw University of Science and Technology, Plac Grunwaldzki 13, 50-377 Wrocław, Poland
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Liu Y, Song S, Bi C, Zhao J, Xi D, Su Z. Occurrence, Distribution and Risk Assessment of Mercury in Multimedia of Soil-Dust-Plants in Shanghai, China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16173028. [PMID: 31438583 PMCID: PMC6747141 DOI: 10.3390/ijerph16173028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 08/10/2019] [Accepted: 08/16/2019] [Indexed: 02/03/2023]
Abstract
The urban environment is a complex ecosystem influenced by strong human disturbances in multi-environmental media, so it is necessary to analyze urban environmental pollutants through the comprehensive analysis of different media. Soil, road dust, foliar dust, and camphor leaves from 32 sample sites in Shanghai were collected for the analysis of mercury contamination in soil–road dust–leaves–foliar dust systems. Mercury concentrations in surface soils in Shanghai were the highest, followed by road dust, foliar dust, and leaves, successively. The spatial distribution of mercury in the four environmental media presented different distribution patterns. Except for the significant correlation between mercury concentrations in road dust and mercury concentrations in leaves (r = 0.56, p < 0.001), there was no significant correlation between the other groups in the four media. Besides this, there was no significant correlation between mercury concentrations and land types. The LUR (Land use regression) model was used to assess the impact of urbanization factors on mercury distribution in the environment. The results showed that soil mercury was affected by factories and residential areas. Foliar dust mercury was affected by road density and power plants. Leaf mercury was affected by power plants and road dust mercury was affected by public service areas. The highest average HI (Hazard index) value of mercury in Shanghai was found in road dust, followed by surface soil and foliar dust. The HI values for children were much higher than those for adults. However, the HI values of mercury exposure in all sampling sites were less than one, suggesting a lower health risk level. The microscopic mechanism of mercury in different environmental media was suggested to be studied further in order to learn the quantitative effects of urbanization factors on mercury concentrations.
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Affiliation(s)
- Yanzhuo Liu
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China
- School of Geographic Sciences, East China Normal University, Shanghai 200241, China
| | - Shanshan Song
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China
- School of Geographic Sciences, East China Normal University, Shanghai 200241, China
| | - Chunjuan Bi
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China.
- School of Geographic Sciences, East China Normal University, Shanghai 200241, China.
- Institute of Eco-Chongming (IEC), East China Normal University, Shanghai 202150, China.
| | - Junli Zhao
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China
- School of Geographic Sciences, East China Normal University, Shanghai 200241, China
| | - Di Xi
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China
- School of Geographic Sciences, East China Normal University, Shanghai 200241, China
| | - Ziqi Su
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China
- School of Geographic Sciences, East China Normal University, Shanghai 200241, China
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Zhang Y, Mei D, Wang T, Wang J, Gu Y, Zhang Z, Romero CE, Pan WP. In-Situ Capture of Mercury in Coal-Fired Power Plants Using High Surface Energy Fly Ash. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:7913-7920. [PMID: 31188572 DOI: 10.1021/acs.est.9b01725] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Coal-fired power plants represent the largest source of mercury emissions worldwide. Using fly ash, a byproduct of these plants, as a sorbent to remove mercury has proven to be difficult. Here, we found that the fresh surface of modified fly ash has good adsorption performance, and it declines obviously with time because of unsaturation characteristics on surface. On the basis of this mechanism, our study provides a method to in situ capture mercury with high surface energy modified fly ash by mechanochemical and bromide treatment. Fresh modified fly ash with active sites is injected into the flue to directly adsorb mercury. A continuous system within a full-scale 300 MWe plant showed that the mercury adsorption performance of the modified fly ash is similar to that of activated carbon, which is the industry benchmark for the treatment of mercury emission in fossil power generation units. This is a breakthrough and indicates that modified fly ash can become an efficient and convenient industrial sorbent for the removal of mercury.
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Affiliation(s)
- Yongsheng Zhang
- Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education , North China Electric Power University , Beijing 102206 , China
| | - Dongqian Mei
- Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education , North China Electric Power University , Beijing 102206 , China
| | - Tao Wang
- Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education , North China Electric Power University , Beijing 102206 , China
| | - Jiawei Wang
- Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education , North China Electric Power University , Beijing 102206 , China
| | - Yongzheng Gu
- Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education , North China Electric Power University , Beijing 102206 , China
| | - Zailei Zhang
- CAS Center for Excellence in Nanoscience, Beijing Institute of Nanoenergy and Nanosystems , Chinese Academy of Sciences , Beijing 100083 , China
| | - Carlos E Romero
- Energy Research Center , Lehigh University , 117 ATLSS Drive , Bethlehem , Pennsylvania 18015-4729 , United States
| | - Wei-Ping Pan
- Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education , North China Electric Power University , Beijing 102206 , China
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Gworek B, Dmuchowski W, Baczewska AH, Brągoszewska P, Bemowska-Kałabun O, Wrzosek-Jakubowska J. Air Contamination by Mercury, Emissions and Transformations-a Review. WATER, AIR, AND SOIL POLLUTION 2017; 228:123. [PMID: 28316351 PMCID: PMC5336545 DOI: 10.1007/s11270-017-3311-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 02/24/2017] [Indexed: 05/09/2023]
Abstract
The present and future air contamination by mercury is and will continue to be a serious risk for human health. This publication presents a review of the literature dealing with the issues related to air contamination by mercury and its transformations as well as its natural and anthropogenic emissions. The assessment of mercury emissions into the air poses serious methodological problems. It is particularly difficult to distinguish between natural and anthropogenic emissions and re-emissions from lands and oceans, including past emissions. At present, the largest emission sources include fuel combustion, mainly that of coal, and "artisanal and small-scale gold mining" (ASGM). The distinctly highest emissions can be found in South and South-East Asia, accounting for 45% of the global emissions. The emissions of natural origin and re-emissions are estimated at 45-66% of the global emissions, with the largest part of emissions originating in the oceans. Forecasts on the future emission levels are not unambiguous; however, most forecasts do not provide for reductions in emissions. Ninety-five percent of mercury occurring in the air is Hg0-GEM, and its residence time in the air is estimated at 6 to 18 months. The residence times of its HgII-GOM and that in Hgp-TPM are estimated at hours and days. The highest mercury concentrations in the air can be found in the areas of mercury mines and those of ASGM. Since 1980 when it reached its maximum, the global background mercury concentration in the air has remained at a relatively constant level.
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Affiliation(s)
- Barbara Gworek
- Institute of Environmental Protection-National Research Institute, Krucza 5/11d St., Warsaw, 00-548 Poland
| | - Wojciech Dmuchowski
- Department of Agriculture and Biology, Warsaw University of Life Sciences, Nowoursynowska 159 St., Warsaw, 02-776 Poland
- Polish Academy of Sciences, Botanical Garden - Center for Biological Diversity Conservation, Prawdziwka 2 St., 02-973 Warsaw, Poland
| | - Aneta H. Baczewska
- Institute of Environmental Protection-National Research Institute, Krucza 5/11d St., Warsaw, 00-548 Poland
| | - Paulina Brągoszewska
- Institute of Environmental Protection-National Research Institute, Krucza 5/11d St., Warsaw, 00-548 Poland
| | - Olga Bemowska-Kałabun
- Institute of Environmental Protection-National Research Institute, Krucza 5/11d St., Warsaw, 00-548 Poland
| | - Justyna Wrzosek-Jakubowska
- Institute of Environmental Protection-National Research Institute, Krucza 5/11d St., Warsaw, 00-548 Poland
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Li J, Yang H, Wu Y, Lv J, Yue G. Effects of the updated national emission regulation in China on circulating fluidized bed boilers and the solutions to meet them. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:6681-6687. [PMID: 23676203 DOI: 10.1021/es4001888] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The advantage of circulating fluidized bed (CFB) boilers in China is their ability to utilize low rank coal with low cost emission control. However, the new National Emission Regulation (NER) issued in early 2012 brings much more stringent challenges on the CFB industries, which also causes much attention from other countries. Based on the principle of a CFB boiler and previous operating experience, it is possible for the CFB boilers to meet the new NER and maintain the advantage of low cost emission control, while, more influences should be considered in their design and operation. To meet the requirement of the new NER, the fly ash collector should adopt a bag house or combination of electrostatic precipitator and bag filter to ensure dust emissions of less than 30 mg · Nm(-3). For SO2 emission control, the bed temperature should be strictly lower than 900 °C to maintain high reactivity and pores. The limestone particle size distribution should be ranged within a special scope to optimize the residence time and gas-solid reaction. At the same time, the injecting point should be optimized to ensure fast contact of lime with oxygen. In such conditions, the desulfurization efficiency could be increased more than 90%. For lower sulfur content fuels (<1.5%, referred value based on the heating value of standard coal of China), increasing Ca/S enough could decrease SO2 emissions lower than that of the new NER, 100 mg · Nm(-3). For fuels with sulfur content higher than 1.5%, some simplified systems for flue gas desulfurization, such as flash dryer absorber (FDA), are needed. And the NOx emissions of a CFB can be controlled to less than 100 mg · Nm(-3) without any equipment at a bed temperature lower than 900 °C for fuels with low volatiles content (<12%), while for fuels with high volatiles, selective non-catalytic reduction (SNCR) should be considered. Due to the unique temperature in CFB as well as the circulating ash, the efficiency of SNCR could reach as high as 70%. The Hg emission of CFB is very low for the new NER due to its innate property.
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Affiliation(s)
- Jingji Li
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China
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Blowers P, Kim BG. The adsorption of mercury-species on relaxed and rumpled CaO (0 0 1) surfaces investigated by density functional theory. J Mol Model 2010; 17:505-14. [DOI: 10.1007/s00894-010-0741-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2009] [Accepted: 05/03/2010] [Indexed: 11/28/2022]
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7
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Chung ST, Kim KI, Yun YR. Adsorption of elemental mercury vapor by impregnated activated carbon from a commercial respirator cartridge. POWDER TECHNOL 2009. [DOI: 10.1016/j.powtec.2008.11.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kim BG, Li X, Blowers P. Adsorption energies of mercury-containing species on CaO and temperature effects on equilibrium constants predicted by density functional theory calculations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:2781-2789. [PMID: 19239190 DOI: 10.1021/la803310w] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The adsorption of Hg, HgCl, and HgCl2 on the CaO surface was investigated theoretically so the fundamental interactions between Hg species and this potential sorbent can be explored. Surface models of a 4 x 4 x 2 cluster, a 5 x 5 x 2 cluster, and a periodic structure using density functional theory calculations with LDA/PWC and GGA/BLYP functionals, as employed in the present work, offer a useful description for the thermodynamic properties of adsorption on metal oxides. The effect of temperature on the equilibrium constant for the adsorption of mercury-containing species on the CaO (0 0 1) surface was investigated with GGA/BLYP calculations in the temperature range of 250-600 K. Results show that, at low coverage of elemental mercury, adsorption on the surface is physisorption while the two forms of oxidized mercury adsorption undergo stronger adsorption. The adsorption energies decrease with increasing coverage for elemental mercury on the surfaces. The chlorine atom enhances the adsorption capacity and adsorbs mercury to the CaO surface more strongly. The adsorption energy is changed as the oxidation state varies, and the equilibrium constant decreases as the temperature increases, in good agreement with data for exothermic adsorption systems.
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Affiliation(s)
- Bo Gyeong Kim
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, Arizona 85721-0011, USA
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9
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Lee TG, Biswas P, Hedrick E. Comparison of Hg0 capture efficiencies of threein situ generated sorbents. AIChE J 2006. [DOI: 10.1002/aic.690470418] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Pitoniak E, Wu CY, Mazyck DW, Powers KW, Sigmund W. Adsorption enhancement mechanisms of silica-titania nanocomposites for elemental mercury vapor removal. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2005; 39:1269-1274. [PMID: 15787366 DOI: 10.1021/es049202b] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A novel nanocomposite that combines high-surface area silica with the photocatalytic properties of titania has been developed that allows for effective capture of elemental mercury vapor. The adsorption capability of the developed material has been found to improve after periods of photocatalytic oxidation. In this study, the mechanisms for adsorption enhancement were identified. BET nitrogen adsorption and mercury porosimetry were used to evaluate pore structure, and the results suggest that a decrease in contact angle was likely to be responsible for improved mercury capture over time. Contact angle measurements showed a significant change of more than 10 degrees, indicating greater attraction to mercury for the used pellets due to deposited mercuric oxide. ICP and TGA analyses showed that mercury was captured as both elemental mercury (Hg0) and mercuric oxide (HgO). In addition, it was shown that pellets used for nearly 500 h still showed greater than 90% removal efficiency and had an average capacity of 10 mg of Hg/g based on mass balance calculations, while some pellets had a capacity over 30 mg of Hg/g according to ICP and TGA analyses. Mercuric oxide doped pellets removed 100% of elemental mercury without pretreatment. The superior mercury removal efficiency combined with various advantages of the novel composite demonstrates its use as an effective alternative to conventional activated carbon injection technology.
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Affiliation(s)
- Erik Pitoniak
- Department of Environmental Engineering Sciences, Particle Engineering Research Center, University of Florida, Gainesville, Florida 32611-6450, USA
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Affiliation(s)
- Fabrizio Scala
- Istituto di Ricerche sulla Combustione, CNR, P.le Tecchio 80, 80125 Napoli, Italy
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12
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Fonseca AM, Órfão JJ, Salcedo RL. Dry Scrubbing of Gaseous HCl with Solid Lime in a Cyclone Reactor at Low Temperatures. Ind Eng Chem Res 2000. [DOI: 10.1021/ie000634e] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ana M. Fonseca
- Universidade Fernando Pessoa, Departamento de Ciência e Tecnologia, Praça 9 de Abril, 4100 Porto, Portugal, and Faculdade de Engenharia da Universidade do Porto, Departamento de Engenharia Química, R. Bragas, 4099 Porto, Portugal
| | - José J. Órfão
- Universidade Fernando Pessoa, Departamento de Ciência e Tecnologia, Praça 9 de Abril, 4100 Porto, Portugal, and Faculdade de Engenharia da Universidade do Porto, Departamento de Engenharia Química, R. Bragas, 4099 Porto, Portugal
| | - Romualdo L. Salcedo
- Universidade Fernando Pessoa, Departamento de Ciência e Tecnologia, Praça 9 de Abril, 4100 Porto, Portugal, and Faculdade de Engenharia da Universidade do Porto, Departamento de Engenharia Química, R. Bragas, 4099 Porto, Portugal
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Guijarro MI, Mendioroz S, Muñoz V. Effect of Morphology of Sulfurized Materials in the Retention of Mercury from Gas Streams. Ind Eng Chem Res 1998. [DOI: 10.1021/ie9701074] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. Isabel Guijarro
- Instituto de Catálisis y Petroleoquímica, CSIC, Campus U.A.M., Cantoblanco, 28049 Madrid, Spain
| | - Sagrario Mendioroz
- Instituto de Catálisis y Petroleoquímica, CSIC, Campus U.A.M., Cantoblanco, 28049 Madrid, Spain
| | - Vicenta Muñoz
- Departamento de Quimica Inorgánica y Química Técnica, U.N.E.D., Senda del Rey S/N, 28040 Madrid, Spain
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KARATZA DESPINA, LANCIA AMEDEO, MUSMARRA DINO, PEPE FRANCESCO, VOLPICELLI GENNARO. Removal of Mercuric Chloride from Flue Gas by Sulfur Impregnated Activated Carbon. ACTA ACUST UNITED AC 1996. [DOI: 10.1089/hwm.1996.13.95] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Lancia A, Karatza D, Musmarra D, Pepe F. Adsorption of Mercuric Chloride from Simulated Incinerator Exhaust Gas by Means of SorbalitTM Particles. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 1996. [DOI: 10.1252/jcej.29.939] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Amedeo Lancia
- Dipartimento di Ingegneria Chimica, Università di Napoli “Federico II”
| | | | | | - Francesco Pepe
- Facoltà di Scienze Ambientali, Seconda Università di Napoli
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Karata D, Lancia A, Musmarra D, Pepe F. Adsorption of metallic mercury on activated carbon. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/s0082-0784(96)80074-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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