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Effects of sulfur on variations in the chemical speciation of heavy metals from fly ash glass

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 10, doi: 10.1007/s11783-023-1728-7

Abstract:

● A higher sulfur content reduced the curing rate of Cr in glass.

Keywords: Dechlorinated fly ash     SO3     Heavy metal     Chemical speciation     Glass solidification    

Effect of lime on speciation of heavy metals during composting of water hyacinth

Jiwan SINGH,Ajay S. KALAMDHAD

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 93-102 doi: 10.1007/s11783-014-0704-7

Abstract: cattle manure and sawdust (6:3:1 ratio) and effects of addition of lime (1%, 2% and 3%) on heavy metal speciationThe Tessier sequential extraction method was employed to investigate the changes in speciation of heavyEffects of physicochemical parameters such as temperature, pH and organic matter on speciation of heavy

Keywords: composting     lime     heavy metals     bioavailability factor     speciation    

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: Large discrepancies are found in VOCs speciation emissions among provinces.

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

Comparison of masking agents for antimony speciation analysis using hydride generation atomic fluorescence

Jianhong XI,Mengchang HE,Kunpeng WANG,Guizhi ZHANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6,   Pages 970-978 doi: 10.1007/s11783-014-0716-3

Abstract: A sensitive atomic spectrometric method for the redox speciation analysis of Sb in water is described

Keywords: Sb(III)     Sb(V)     determination     masking agents     hydride generation (HG-AFS)    

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    

The speciation, leachability and bioaccessibility of Cu and Zn in animal manure-derived biochar: effect

Qi Lin, Xin Xu, Lihua, Wang, Qian Chen, Jing Fang, Xiaodong Shen, Liping Lou, Guangming Tian

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 3, doi: 10.1007/s11783-017-0924-8

Abstract: poultry and swine manure-derived biochars (denoted PB and SB, respectively) to evaluate the variance of speciationThe results showed that Cu speciation was dependent on the feedstock with Cu-citrate-like in swine manurePyrolyzed products, however, had similar Cu speciation mainly with species resembling Cu-citrate, CuO

Keywords: Animal manure     Biochar     Metals     Molecular species     Pyrolysis    

Speciation evolutions of target metals (Cd, Pb) influenced by chlorine and sulfur during sewage sludge

Jingde LUAN,Rundong LI,Zhihui ZHANG,Yanlong LI,Yun ZHAO

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 6,   Pages 871-876 doi: 10.1007/s11783-013-0621-1

Abstract: work, the combined analysis of metal partitioning behavior between vapor phase and condensed phase, speciationWith the increase of chlorine and sulfur in sludge, the inner speciation redistribution of heavy metals

Keywords: sludge incineration     heavy metals     inner speciation redistribution     binding energy    

Recycling from Waste Light-Emitting Diode Under Hydrothermal Condition: Plastic Package Degradation, Speciation

Yongliang Zhang,Lu Zhan,Zhenming Xu,

Engineering doi: 10.1016/j.eng.2023.04.008

Abstract: Light emitting diodes (LEDs) have accounted for most of the lighting market as the technology matures and costs continue to reduce. As a new type of e-waste, LED is a double-edged sword, as it contains not only precious and rare metals but also organic packaging materials. In previous studies, LED recycling focused on recovering precious and strategic metals while ignoring harmful substances such as organic packaging materials. Unlike crushing and other traditional methods, hydrothermal treatment can provide an environment-friendly process for decomposing packaging materials. This work developed a closed reaction vessel, where the degradation rate of plastic polyphthalamide (PPA) was close to 100%, with nano-TiO2 encapsulated in plastic PPA being efficiently recovered, while metals contained in LED were also recycled efficiently. Besides, the role of water in plastic PPA degradation that has been overlooked in current studies was explored and speculated in detail in this work. Environmental impact assessment revealed that the proposed recycling route for waste LED could significantly reduce the overall environmental impact compared to the currently published processes. Especially the developed method could reduce more than half the impact of global warming. Furthermore, this research provides a theoretical basis and a promising method for recycling other plastic-packaged e-waste devices, such as integrated circuits.

Keywords: Waste LED     Hydrothermal treatment     Recycling     Plastic PPA degradation     Packaging materials    

Sequence of the main geochemical controls on the Cu and Zn fractions in the Yangtze River estuarine sediments

Shou ZHAO,Dongxin WANG,Chenghong FENG,Ying WANG,Zhenyao SHEN

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 19-27 doi: 10.1007/s11783-014-0723-4

Abstract: Metal speciation can provide sufficient information for environmental and geochemical researches.In this study, based on the speciation determination of Cu and Zn in the Yangtze Estuary sediments, rolesResults show that TOC, clay and Fe/Mn oxides are key geochemical factors affecting the chemical speciation

Keywords: chemical speciation     geochemical factors     estuaries     sediments     correlation     salinity    

Stabilization of hexavalent chromium with pretreatment and high temperature sintering in highly contaminated soil

Haiyan Mou, Wenchao Liu, Lili Zhao, Wenqing Chen, Tianqi Ao

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1353-7

Abstract: SEM, XRD, TG-DSC, and speciation analysis indicated that when the sintering temperature reached 1000°

Keywords: Chromium     Heavy contaminated soil     Reduction     Sintering     Stabilization     Speciation    

Title Author Date Type Operation

Effects of sulfur on variations in the chemical speciation of heavy metals from fly ash glass

Journal Article

Effect of lime on speciation of heavy metals during composting of water hyacinth

Jiwan SINGH,Ajay S. KALAMDHAD

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

Comparison of masking agents for antimony speciation analysis using hydride generation atomic fluorescence

Jianhong XI,Mengchang HE,Kunpeng WANG,Guizhi ZHANG

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 speciation, leachability and bioaccessibility of Cu and Zn in animal manure-derived biochar: effect

Qi Lin, Xin Xu, Lihua, Wang, Qian Chen, Jing Fang, Xiaodong Shen, Liping Lou, Guangming Tian

Journal Article

Speciation evolutions of target metals (Cd, Pb) influenced by chlorine and sulfur during sewage sludge

Jingde LUAN,Rundong LI,Zhihui ZHANG,Yanlong LI,Yun ZHAO

Journal Article

Recycling from Waste Light-Emitting Diode Under Hydrothermal Condition: Plastic Package Degradation, Speciation

Yongliang Zhang,Lu Zhan,Zhenming Xu,

Journal Article

Sequence of the main geochemical controls on the Cu and Zn fractions in the Yangtze River estuarine sediments

Shou ZHAO,Dongxin WANG,Chenghong FENG,Ying WANG,Zhenyao SHEN

Journal Article

Stabilization of hexavalent chromium with pretreatment and high temperature sintering in highly contaminated soil

Haiyan Mou, Wenchao Liu, Lili Zhao, Wenqing Chen, Tianqi Ao

Journal Article