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Unlocked disinfection by-product formation potential upon exposure of swimming pool water to additional stimulants

Alvyn P. Berg, Ting-An Fang, Hao L. Tang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 1, doi: 10.1007/s11783-019-1098-3

Abstract:

• Reactions between chlorine and anthropogenicorganics were slow and long-lasting.

Keywords： Trihalomethanes     Haloacetic acids     Chloroform     Residual chlorine     Anthropogenic organics     Swimming pool water    

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Concentrations of anthropogenic Pt and Pd in urban roadside soils in Xuzhou, China

WANG Xuesong, SUN Cheng

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 4,   Pages 475-479 doi: 10.1007/s11783-008-0071-3

Abstract: The potential accumulation of platinum group elements (PGE) in the environment from automobile catalysts is high in urban areas, with the major sinks being roadside soils. Therefore, this investigation presented the detailed study on characterized concentrations of Pt and Pd and their enrichment ratios in urban roadside soils in Xuzhou, China in March 2003. Data from 21 roadside topsoil samples analyzed by inductively coupled plasma-mass spectrometer (ICP-MS) illustrated that the medians of concentrations of Pt and Pd were 2.9 and 2.8 ng/g, respectively. Hierarchical clustering analysis indicated that Pt and Pd were mainly from traffic emissions. Compared to unpolluted soils, computation of Pt and Pd enrichment ratios suggested that the Xuzhou roadside soils had average enrichment factors of 3.53 for Pt (in range of 1.22–5.73) and of 3.37 for Pd (in range of 1.35–4.46). Lower Pt/Pd ratios (in range of 0.35–2.86) in relation to similar studies in other countries were observed, which might be due to the different Pt/Pd ratios in Chinese automobile catalytic converters. Moreover, fine fraction (<250 ?m) contained higher concentrations of Pt and Pd compared to the coarse fraction (250–500 ?m).

Keywords： platinum     detailed     different     Hierarchical     automobile catalytic    

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Win-Win: Anthropogenic circularity for metal criticality and carbon neutrality

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 2, doi: 10.1007/s11783-023-1623-2

Abstract:

● Anthropogenic circularity science is an emerging interdisciplinary

Keywords： Anthropogenic circularity     Material flow analysis     Criticality     Carbon neutrality     Solid waste     Circular    

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Chemical speciation and anthropogenic sources of ambient volatile organic compounds (VOCs) during summer

LU Sihua, LIU Ying, SHAO Min, HUANG Shan

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 2,   Pages 147-152 doi: 10.1007/s11783-007-0026-0

Abstract: Volatile organic compounds (VOCs) were measured at six sites in Beijing in August, 2004. Up to 148 VOC species, including C to C alkanes, C to C alkenes, C to C aromatics, and halogenated hydrocarbons, were quantified. Although the concentrations differed at the sites, the chemical compositions were similar, except for the Tongzhou site where aromatics were significantly high in the air. Based on the source profiles measured from previous studies, the source apportionment of ambient VOCs was preformed by deploying the chemical mass balance (CMB) model. The results show that urban VOCs are predominant from mobile source emissions, which contribute more than 50% of the VOCs (in mass concentrations) to ambient air at most sites. Other important sources are gasoline evaporation, painting, and solvents. The exception is at the Tongzhou site where vehicle exhaust, painting, and solvents have about equal contribution, around 35% of the ambient VOC concentration. As the receptor model is not valid for deriving the sources of reactive species, such as isoprene and 1,3-butadiene, other methodologies need to be further explored.

Keywords： Beijing     exception     gasoline evaporation     August     exhaust    

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The temporal changes of the concentration level of typical toxic organics in the river sediments around

Qiang Li, Xiong Xu, Yaoyao Fang, Ruiyang Xiao, Donghong Wang, Wenjue Zhong

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 6, doi: 10.1007/s11783-018-1054-7

Abstract:

The current situation of typical organics in the sediments around

56 kinds of typical toxic organics were detected

The change of different organics in the sediments

Keywords： Organic compounds     Endocrine disrupters     Sediments     Concentration     Temporal changes    

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Impact of anthropogenic heat emissions on meteorological parameters and air quality in Beijing using

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 4, doi: 10.1007/s11783-021-1478-3

Abstract:

The Large scale Urban Consumption of energ Y model was updated and coupled with WRF.

Keywords： Anthropogenic heat emissions     LUCY     High-resolution     Meteorological parameters     Air quality    

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Degradation of refractory organics in concentrated leachate by the Fenton process: Central composite

Senem Yazici Guvenc, Gamze Varank

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 1, doi: 10.1007/s11783-020-1294-1

Abstract: Abstract • 90% total COD, 95.3% inert COD and 97.2% UV254 were removed. • High R2 values (over 95%) for all responses were obtained with CCD. • Operational cost was calculated to be 0.238 €/g CODremoved for total COD removal. • Fenton oxidation was highly-efficient method for inert COD removal. • BOD5/COD ratio of leachate concentrate raised from 0.04 to 0.4. The primary aim of this study is inert COD removal from leachate nanofiltration concentrate because of its high concentration of resistant organic pollutants. Within this framework, this study focuses on the treatability of leachate nanofiltration concentrate through Fenton oxidation and optimization of process parameters to reach the maximum pollutant removal by using response surface methodology (RSM). Initial pH, Fe2+ concentration, H2O2/Fe2+ molar ratio and oxidation time are selected as the independent variables, whereas total COD, color, inert COD and UV254 removal are selected as the responses. According to the ANOVA results, the R2 values of all responses are found to be over 95%. Under the optimum conditions determined by the model (pH: 3.99, Fe2+: 150 mmol/L, H2O2/Fe2+: 3.27 and oxidation time: 84.8 min), the maximum COD removal efficiency is determined as 91.4% by the model. The color, inert COD and UV254 removal efficiencies are determined to be 99.9%, 97.2% and 99.5%, respectively, by the model, whereas the total COD, color, inert COD and UV254 removal efficiencies are found respectively to be 90%, 96.5%, 95.3% and 97.2%, experimentally under the optimum operating conditions. The Fenton process improves the biodegradability of the leachate NF concentrate, increasing the BOD5/COD ratio from the value of 0.04 to the value of 0.4. The operational cost of the process is calculated to be 0.238 €/g CODremoved. The results indicate that the Fenton oxidation process is an efficient and economical technology in improvement of the biological degradability of leachate nanofiltration concentrate and in removal of resistant organic pollutants.

Keywords： Concentrated leachate     Fenton oxidation     Central composite design     Biodegradability     Inert COD    

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Trends of chemical speciation profiles of anthropogenic volatile organic compounds emissions in China

Wei WEI, Shuxiao WANG, Jiming HAO, Shuiyuan CHENG

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 1,   Pages 27-41 doi: 10.1007/s11783-012-0461-4

Abstract: This study estimates the detailed chemical profiles of China’s anthropogenic volatile organic compounds

Keywords： volatile organic compounds (VOCs)     chemical speciation     ozone formation     Photochemical Ozone Creation Potential (POCP)     China    

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Acidogenic sludge fermentation to recover soluble organics as the carbon source for denitrification in

Lin Lin, Ying-yu Li, Xiao-yan Li

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 4, doi: 10.1007/s11783-018-1043-x

Abstract:

CEPS sludge was compared with conventional primary and secondary sludge for the VFAs yield.

Fe-based CEPS sludge exhibited the highest efficiency of organic recovery.

Fermented CEPS sludge liquor provided a sufficient carbon source for denitrification.

99% of nitrate removal was achieved based on the Fe-CEPS and sludge fermentation.

Keywords： Sewage sludge     Chemically enhanced primary sedimentation (CEPS)     Acidogenic fermentation     Organic carbon recovery     Nitrogen removal    

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Trophic mode and organics metabolic characteristic of fungal community in swine manure composting

Jing Peng, Ke Wang, Xiangbo Yin, Xiaoqing Yin, Mengfei Du, Yingzhi Gao, Philip Antwi, Nanqi Ren, Aijie Wang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 6, doi: 10.1007/s11783-019-1177-5

Abstract: Redox potential, organics and moisture are main factors impacting fungal community.

Keywords： Fungus     FUNGuild     Biolog     Trophic mode     Composting     Oxidation reduction potential    

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Efficient H2O2 Electrosynthesis and Its Electro-Fenton Application for Refractory Organics Article

Lei Li,Jing Bai,Panyu Jiang,Yan Zhang,Tingsheng Zhou,Jiachen Wang,Changhui Zhou,Jinhua Li,Baoxue Zhou

Engineering 2023, Volume 30, Issue 11,   Pages 131-143 doi: 10.1016/j.eng.2023.02.005

Abstract: produced for excellent EF performance, resulting in a degradation efficiency of over 96% for refractory organics

Keywords： Hydrogen peroxide     Hydrophilic/hydrophobic interface modification     Electro-Fenton     Refractory organics    

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Using hydrochemical signatures to characterize the long-period evolution of groundwater information in the Dagu River Basin, China

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-021-1393-7

Abstract:

• The long-period groundwater evolution was identified by hydrochemical signatures.

Keywords： Groundwater quality     Hydrochemical signatures     Spatial-temporal variations     Water-rock interactions     Anthropogenic    

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Air pollution affects food security in China: taking ozone as an example

Zhaozhong FENG,Xuejun LIU,Fusuo ZHANG

Frontiers of Agricultural Science and Engineering 2015, Volume 2, Issue 2,   Pages 152-158 doi: 10.15302/J-FASE-2015067

Abstract: Air pollution is becoming an increasingly important environmental concern due to its visible negative impact on human health. However, air pollution also affects agricultural crops or food security directly or indirectly, which has not so far received sufficient attention. In this overview, we take ozone (O ) as an example to analyze the principles and extent of the impact of air pollution on food security in China based on a review of the literature. Current O pollution shows a clear negative impact on food security, causing around a 10% yield decrease for major cereal crops according to a large number of field studies around the world. The mean yield decrease of winter wheat is predicted to be up to 20% in China, based on the projection of future ground-level O concentration in 2020, if no pollution control measures are implemented. Strict mitigation of NO and VOC (two major precursors of O ) emissions is crucial for reducing the negative impacts of ground-level O on food security. Breeding new crop cultivars with tolerance to high ground-level O should receive serious consideration in future research programs. In addition, integrated soil-crop system management will be an important option to mitigate the negative effects of elevated ground-level O on cereal crop production and food quality.

Keywords： air pollution     ozone damage     anthropogenic activity     crop production     mitigation of reactive N emission    

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Organics Recovery from Waste Activated Sludge In-situ Driving Efficient Nitrogen Removal from Mature

Fangzhai Zhang,Shang Ren,Haoran Liang,Zhaozhi Wang,Ying Yan,Jiahui Wang,Yongzhen Peng,

Engineering doi: 10.1016/j.eng.2023.03.005

Abstract: study presents an innovative biotechnology based on free nitrous acid (FNA) to realize sustainable organicsFNA, the protonated form of nitrite, degrades organics in the WAS to the soluble fraction by the biocidaleffect, and the released organics are utilized by denitrifiers to drive NOxFinally, F/DN-SBR effluent containing organics is refluxed to PN/DN-SBR for secondary denitrificationAfter 175 d operation, an average of 19350.6 mg chemical oxygen demand organics were recovered per operational

Keywords： Waste activated sludge     Bioresource recovery     Simultaneous treatment of wastewater and sludge     Mature landfill leachate     Free nitrous acid    

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Standard method design considerations for semi-quantification of total naphthenic acids in oil sands process affected water by mass spectrometry: A review

Kevin A. Kovalchik, Matthew S. MacLennan, Kerry M. Peru, John V. Headley, David D.Y. Chen

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 3,   Pages 497-507 doi: 10.1007/s11705-017-1652-0

Abstract: Naphthenic acids are a complex class of thousands of naturally occurring aliphatic and alicyclic carboxylic acids found in oil sands bitumen and in the wastewater generated from bitumen processing. Dozens of analytical methods have been developed for the semi-quantification of total naphthenic acids in water samples. However, different methods can give different results, prompting investigation into the comparability of the many methods. A review of important methodological features for analyzing total naphthenic acids is presented and informs the design of future standard methods for the semi-quantification of total naphthenic acids using mass spectrometry. The design considerations presented are a synthesis of discussions from an Environment and Climate Change Canada (ECCC) led taskforce of 10 laboratory experts from government, industry and academia during April 2016 and subsequent discussions between University of British Columbia and ECCC representatives. Matters considered are: extraction method, solvent, pH, and temperature; analysis instrumentation and resolution; choice of calibration standards; use of surrogate and internal standards; and use of online or offline separation prior to analysis. The design considerations are amenable to both time-of-flight and Orbitrap mass spectrometers.

Keywords： total naphthenic acids     environmental samples     oil sands process affected water     polar organics     mass spectrometry    

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Title Author Date Type Operation

Unlocked disinfection by-product formation potential upon exposure of swimming pool water to additional stimulants

Alvyn P. Berg, Ting-An Fang, Hao L. Tang

Journal Article

Concentrations of anthropogenic Pt and Pd in urban roadside soils in Xuzhou, China

WANG Xuesong, SUN Cheng

Journal Article

Win-Win: Anthropogenic circularity for metal criticality and carbon neutrality

Journal Article

Chemical speciation and anthropogenic sources of ambient volatile organic compounds (VOCs) during summer

LU Sihua, LIU Ying, SHAO Min, HUANG Shan

Journal Article

The temporal changes of the concentration level of typical toxic organics in the river sediments around

Qiang Li, Xiong Xu, Yaoyao Fang, Ruiyang Xiao, Donghong Wang, Wenjue Zhong

Journal Article

Impact of anthropogenic heat emissions on meteorological parameters and air quality in Beijing using

Journal Article

Degradation of refractory organics in concentrated leachate by the Fenton process: Central composite

Senem Yazici Guvenc, Gamze Varank

Journal Article

Trends of chemical speciation profiles of anthropogenic volatile organic compounds emissions in China

Wei WEI, Shuxiao WANG, Jiming HAO, Shuiyuan CHENG

Journal Article

Acidogenic sludge fermentation to recover soluble organics as the carbon source for denitrification in

Lin Lin, Ying-yu Li, Xiao-yan Li

Journal Article

Trophic mode and organics metabolic characteristic of fungal community in swine manure composting

Jing Peng, Ke Wang, Xiangbo Yin, Xiaoqing Yin, Mengfei Du, Yingzhi Gao, Philip Antwi, Nanqi Ren, Aijie Wang

Journal Article

Efficient H2O2 Electrosynthesis and Its Electro-Fenton Application for Refractory Organics

Lei Li,Jing Bai,Panyu Jiang,Yan Zhang,Tingsheng Zhou,Jiachen Wang,Changhui Zhou,Jinhua Li,Baoxue Zhou

Journal Article

Using hydrochemical signatures to characterize the long-period evolution of groundwater information in the Dagu River Basin, China

Journal Article

Air pollution affects food security in China: taking ozone as an example

Zhaozhong FENG,Xuejun LIU,Fusuo ZHANG

Journal Article

Organics Recovery from Waste Activated Sludge In-situ Driving Efficient Nitrogen Removal from Mature

Fangzhai Zhang,Shang Ren,Haoran Liang,Zhaozhi Wang,Ying Yan,Jiahui Wang,Yongzhen Peng,

Journal Article

Standard method design considerations for semi-quantification of total naphthenic acids in oil sands process affected water by mass spectrometry: A review

Kevin A. Kovalchik, Matthew S. MacLennan, Kerry M. Peru, John V. Headley, David D.Y. Chen

Journal Article