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Study on Bio-Purifying Several Gaseous Pollutants

Sun Shi,Wang Jie,Wu Xianhua,Li Xiaomei,Xu XIaoyi,Deng Futang,Zhang Wei,Lei Yanmei,Zeng Erli

Strategic Study of CAE 2007, Volume 9, Issue 1,   Pages 73-77

Abstract:

  Bio-purification test of the seven kinds of gaseous pollutantsAnd the purifying effects of biofilm-packing towers for three kinds of inorganic pollutants, SO2of organic pollutants, styrene, formaldehyde and CS2, (bio-elimination capacity B < 30The suitable operation conditions of the biofilm-packing tower system for purifying the 7 kinds of gaseouspollutants were confirmed and the seven kinds of special bacteria strains were identified in this study

Keywords： seven kinds of gaseous pollutants     biofilm-packing tower     purification of waste gas     identifying ofbacteria    

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Effects of a diesel oxidation catalyst on gaseous pollutants and fine particles from an engine operating

Xiaoyan SHI, Kebin HE, Weiwei SONG, Xingtong WANG, Jihua TAN

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 4,   Pages 463-469 doi: 10.1007/s11783-011-0317-3

Abstract: The effects of a diesel oxidation catalytic (DOC) converter on diesel engine emissions were investigated on a diesel bench at various loads for two steady-state speeds using diesel fuel and B20. The DOC was very effective in hydrocarbon (HC) and CO oxidation. Approximately 90%–95% reduction in CO and 36%–70% reduction in HC were realized using the DOC. Special attention was focused on the effects of the DOC on elemental carbon (EC) and organic carbon (OC) fractions in fine particles (PM ) emitted from the diesel engine. The carbonaceous compositions of PM were analyzed by the method of thermal/optical reflectance (TOR). The results showed that total carbon (TC), OC and EC emissions for PM from diesel fuel were generally reduced by the DOC. For diesel fuel, TC emissions decreased 22%–32% after the DOC depending on operating modes. The decrease in TC was attributed to 35%–97% decrease in OC and 3%–65% decrease in EC emissions. At low load, a significant increase in the OC/EC ratio of PM was observed after the DOC. The effect of the DOC on the carbonaceous compositions in PM from B20 showed different trends compared to diesel fuel. At low load, a slight increase in EC emissions and a significant decrease in OC/EC ratio of PM after DOC were observed for B20.

Keywords： diesel oxidation catalyst (DOC)     diesel particulate matters     elemental carbon (EC)     organic carbon (OC)     biodiesel    

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Phytotoxicity in seven higher plant species exposed to di-

Tingting MA,Ying TENG,Peter CHRISTIE,Yongming LUO

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 2,   Pages 259-268 doi: 10.1007/s11783-014-0652-2

Abstract: We investigated phytotoxicity in seven plant species exposed to a range of concentrations (0– 500 mg·ethylhexyl) phthalate (DEHP), two representative phthalate esters (PAEs) nominated by USEPA as priority pollutantsnot in alfalfa, ryegrass or onion shoots, indicating lower sensitivity of these three species to PAE pollutantsPlant pigment contents were clearly affected under the stress of both pollutants, implying the potential

Keywords： phytotoxicity     di-n-butyl phthalate     bis(2-ethylhexyl) phthalate     malondialdehyde     plant pigments (chlorophyll a     b and carotinoids)    

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Effects of exogenous acylated homoserine lactones on biofilms in biofilters for gaseous toluene treatment

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 2, doi: 10.1007/s11783-023-1617-0

Abstract:

● Biofilm formation was enhanced by exogenous AHLs.

Keywords： Quorum sensing     AHLs     Biofilter     Biofilm formation    

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Heterogeneous reaction mechanism of gaseous HNO

Nan ZHAO,Qingzhu ZHANG,Wenxing WANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 5, doi: 10.1007/s11783-016-0836-z

Abstract: We studied the heterogeneous reaction mechanism of gaseous HNO with solid NaCl.HCl is released from heterogeneous reactions between gaseous HNO and solid NaCl.This paper aimed at the heterogeneous reaction between gaseous HNO and solid NaCl.HCl is released from heterogeneous reactions between gaseous HNO and solid NaCl and can react with OHThe results will offer further insights into the impact of gaseous HNO on the air quality of the coastal

Keywords： Seasalt particles     NaCl     HNO3     Heterogeneous reaction     Reaction mechanism     Density functional theory    

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Microwave-assisted catalytic oxidation of gaseous toluene with a Cu-Mn-Ce/cordierite honeycomb catalyst

Longli Bo, Shaoyuan Sun

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 2,   Pages 385-392 doi: 10.1007/s11705-018-1738-3

Abstract: The catalytic oxidation of gaseous toluene was primarily investigated using a fixed bed reactor under

Keywords： microwave     catalytic oxidation     toluene     Cu-Mn-Ce/cordierite     mineralization    

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Emission factors of gaseous carbonaceous species from residential combustion of coal and crop residue

Qin WANG, Chunmei GENG, Sihua LU, Wentai CHEN, Min SHAO

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 1,   Pages 66-76 doi: 10.1007/s11783-012-0428-5

Abstract: Experiments were performed to measure the emission factors ( s) of gaseous carbonaceous species, suchto allow higher combustion efficiency would be beneficial for reducing emissions of carbonaceous air pollutants

Keywords： residential combustion     coal     crop residue briquette     emission factors     gaseous carbonaceous species    

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Four kinds of capping materials for controlling phosphorus and nitrogen release from contaminated sediment

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 3, doi: 10.1007/s11783-021-1463-x

Abstract:

• Lanthanum modified bentonite (LMB) can effectively absorb phosphorus (P).

Keywords： Sediment     Eutrophication     Thin-layer capping     Phosphorus     Nitrogen     Aluminum-based P-inactivation agent    

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Multiple Pollutants from Crop and Livestock Production in the Yangtze River: Status and Challenges

Frontiers of Agricultural Science and Engineering doi: 10.15302/J-FASE-2023511

Abstract:

● Cash crops and livestock production in Yangtze River Basin has grown rapidly.

Keywords： Agriculture Green Development     crop production     livestock production     multi-pollutant models     multiple pollutants    

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Successful management of seven cases of critical COVID-19 with early noninvasive–invasive sequential

Mian Peng, Xueyan Liu, Jinxiu Li, Di Ren, Yongfeng Liu, Xi Meng, Yansi Lyu, Ronglin Chen, Baojun Yu, Weixiong Zhong

Frontiers of Medicine 2020, Volume 14, Issue 5,   Pages 674-680 doi: 10.1007/s11684-020-0796-3

Abstract: We report the clinical and laboratory findings and successful management of seven patients with criticalNucleic acid testing confirmed COVID-19 in all seven patients.All seven patients were extubated, weaned off MV, transferred to the common ward, and discharged as of

Keywords： COVID-19     noninvasive–invasive sequential ventilation     bundle pharmacotherapy    

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Performance of seven highway construction contracting methods analyzed by project size

Yuanxin ZHANG, Abdol CHINI, R. Edward MINCHIN Jr., Lourdes PTSCHELINZEW, Dev SHAH

Frontiers of Engineering Management 2018, Volume 5, Issue 2,   Pages 240-250 doi: 10.15302/J-FEM-2018040

Abstract: The conventional Design-Bid-Build (DBB) construction contracting method has had various drawbacks exposed in highway construction practice, including lack of communication, inefficient design, antagonizing relationships, and increased disputes. To mitigate the negative aspects of DBB, several alternative contracting methods and alternative project delivery systems have been devised and introduced to the industry over the past 30 years. Five such innovations were tested by a research team from the University of Florida under the sponsorship of the Florida Department of Transportation (FDOT). To perform a realistic assessment, this study categorized FDOT projects built between 2006 and 2015 into groups according to current contract amounts. Both absolute and relative metrics were defined and employed. For comparison purposes, a collective analysis on all gathered data was performed. Additionally, the influence of outliers on the results was examined. The results showed that analyses based on individual cost categories are more convincing because large projects tend to impose stronger influence on the analyses. In addition, outliers must be identified and screened to reach realistic and reliable conclusions. With regard to the actual performance of the contracting methods, each performs differently within different cost categories.

Keywords： alternative contracting methods     time     cost     performance evaluation    

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Effect of fine solid particles on absorption rate of gaseous CO

LU Sumin, MA Youguang, SHEN Shuhua, ZHU Chunying

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 4,   Pages 368-372 doi: 10.1007/s11705-008-0067-3

Abstract: three different slurries consisting of water, cyclohexane and soybean oil, respectively, and three kindsThe experimental results show that the active carbon particles could enhance the absorption rate of gaseousThese phenomena indicate that the solid particles, which could enhance the gaseous CO absorption rate

Keywords： constant     influence     soybean     solvent     concentration    

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The R&D of Flue Gas Pollutants Deep-Removal Technology for Coal-fired Power Plants

Xiao-lu Zhang

Frontiers of Engineering Management 2015, Volume 2, Issue 4,   Pages 359-363 doi: 10.15302/J-FEM-2015057

Abstract: The flue gas pollutants deep-removal technology (DRT) focusing on PM removal is the prime method offurther reducing pollutants emission from coal-fired power plants.

Keywords： coal-fired power plant     pollutants emission reduction     PM2.5     flue gas pollutants     deep-removal    

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Multimedia distribution and health risk assessment of typical organic pollutants in a retired industrial

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 11, doi: 10.1007/s11783-023-1742-9

Abstract:

● A fine portrayal of organic pollutants in a retired industrial park

Keywords： Organic pollutants     Retired industrial park     Spatial correlation     Health risk assessment    

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Characteristics of pollutants behavior in a stormwater constructed wetland during dry days

Jianghua YU, Kisoo PARK, Youngchul KIM

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 5,   Pages 649-657 doi: 10.1007/s11783-012-0426-7

Abstract: A stormwater wetland treating non-point source pollution (NPS) from a 64 ha agricultural watershed was monitored over a period of five months. The results indicated that pH and dissolved oxygen (DO) were increased in the wetland due to the algal growth. The highest total suspended solids (TSS) concentration was observed in the aeration pond due to the resuspension of solids, decreased in the wetland. The respective decreases in total nitrogen (TN) and total kjeldahl nitrogen (TKN) were 15.9% and 28.7% on passing through the wetland. The nitrate and ammonia were increased by 45.4% and decreased by 79.9%, respectively. These variations provided strong evidence for the existence of nitrification. The total phosphorus (TP) and phosphate had respective reductions of 52.3% and 58.2% over the wetland. The total chemical oxygen demand (TCOD) and soluble chemical oxygen demand (SCOD) were also decreased. Generally, the TN, TP and phosphate removal efficiencies were positive. These positive removal efficiencies were mainly due to microbial activities, uptake by plants, and chemical precipitation at high pH. Negative removal efficiencies can be caused by continuous rainfall activities, with short antecedent dry days (ADDs) and unstable hydraulic conditions, some other biogeochemical transformations and algal growth also being important parameters.

Keywords： constructed stormwater wetland     dry days     nitrification and denitrification     pollutants characteristic    

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Title Author Date Type Operation

Study on Bio-Purifying Several Gaseous Pollutants

Sun Shi,Wang Jie,Wu Xianhua,Li Xiaomei,Xu XIaoyi,Deng Futang,Zhang Wei,Lei Yanmei,Zeng Erli

Journal Article

Effects of a diesel oxidation catalyst on gaseous pollutants and fine particles from an engine operating

Xiaoyan SHI, Kebin HE, Weiwei SONG, Xingtong WANG, Jihua TAN

Journal Article

Phytotoxicity in seven higher plant species exposed to di-

Tingting MA,Ying TENG,Peter CHRISTIE,Yongming LUO

Journal Article

Effects of exogenous acylated homoserine lactones on biofilms in biofilters for gaseous toluene treatment

Journal Article

Heterogeneous reaction mechanism of gaseous HNO

Nan ZHAO,Qingzhu ZHANG,Wenxing WANG

Journal Article

Microwave-assisted catalytic oxidation of gaseous toluene with a Cu-Mn-Ce/cordierite honeycomb catalyst

Longli Bo, Shaoyuan Sun

Journal Article

Emission factors of gaseous carbonaceous species from residential combustion of coal and crop residue

Qin WANG, Chunmei GENG, Sihua LU, Wentai CHEN, Min SHAO

Journal Article

Four kinds of capping materials for controlling phosphorus and nitrogen release from contaminated sediment

Journal Article

Multiple Pollutants from Crop and Livestock Production in the Yangtze River: Status and Challenges

Journal Article

Successful management of seven cases of critical COVID-19 with early noninvasive–invasive sequential

Mian Peng, Xueyan Liu, Jinxiu Li, Di Ren, Yongfeng Liu, Xi Meng, Yansi Lyu, Ronglin Chen, Baojun Yu, Weixiong Zhong

Journal Article

Performance of seven highway construction contracting methods analyzed by project size

Yuanxin ZHANG, Abdol CHINI, R. Edward MINCHIN Jr., Lourdes PTSCHELINZEW, Dev SHAH

Journal Article

Effect of fine solid particles on absorption rate of gaseous CO

LU Sumin, MA Youguang, SHEN Shuhua, ZHU Chunying

Journal Article

The R&D of Flue Gas Pollutants Deep-Removal Technology for Coal-fired Power Plants

Xiao-lu Zhang

Journal Article

Multimedia distribution and health risk assessment of typical organic pollutants in a retired industrial

Journal Article

Characteristics of pollutants behavior in a stormwater constructed wetland during dry days

Jianghua YU, Kisoo PARK, Youngchul KIM

Journal Article