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36 results on '"Li, Anding"'

9. A Development Framework for Virtools-Based DVR Driving System

Author

Li, Xunxiang, Chen, Dingfang, Wang, Le, Li, Anding, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Shen, Weiming, editor, Luo, Junzhou, editor, Lin, Zongkai, editor, Barthès, Jean-Paul A., editor, and Hao, Qi, editor

Published
2007
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17. Evolution processes of trace metal speciation in leachates with different ages from Laogang Refuse Landfill, Shanghai

Author

Li Anding, Ziyang Lou, Youcai Zhao, and Nanwen Zhu

Subjects
Pollution, 021110 strategic, defence & security studies, Suspended solids, Trace metal speciation, Chemistry, media_common.quotation_subject, Treatment process, 0211 other engineering and technologies, Ocean Engineering, Fraction (chemistry), 02 engineering and technology, 010501 environmental sciences, 01 natural sciences, Speciation, Environmental chemistry, Size fractions, Leachate, 0105 earth and related environmental sciences, Water Science and Technology, media_common
Abstract

Trace metals in leachates are forced to be removed with the implement of the latest Chinese standards of landfill pollution control (GB-16889, 2008), and understanding the speciation distribution processes is important for the development of the leachate treatment process. In this work, evolution processes of trace metal speciation were investigated according to the size fractions, hydrophobic/hydrophilic fractions, and geochemical species with the disposal time. The main trace metals, that is, Pb, Ni, Cr Cu, and Zn, were around 0.04–0.52 mg Pb/L, 0.24–1.22 mg Ni/L, 0.12–0.86 mg Cr/L, 0–0.28 mg Cu/L, and 0.58–1.98 mg Zn/L in leachates with the disposal ages of 2–12 years. Pb was found to predominate in suspended solids, with the percentage of 46–100%, and the dominant fraction of Ni and Zn was in dissolved fractions, with the percentage of 28–83 and 34–67%, respectively, while Cr and Cu scattered between suspended solid and dissolved fractions. The predominated geochemical species of Pb, Ni, Zn, a...

Published
2015

22. Distribution pattern and the risks of OPCs, PHAs and PCBs in aged refuses from landfill

Author

Nanwen Zhu, Jun Tai, Youcai Zhao, Wenxiang Yuan, Ziyang Lou, and Li Anding

Subjects
Pollutant, 010504 meteorology & atmospheric sciences, Mean value, 010501 environmental sciences, Pesticide, 01 natural sciences, Polychlorinated Biphenyls, Dieldrin, chemistry.chemical_compound, Waste Disposal Facilities, Organophosphorus Compounds, chemistry, Land reclamation, Environmental chemistry, Distribution pattern, Environmental science, Endrin, Soil Pollutants, National standard, Pesticides, Polycyclic Aromatic Hydrocarbons, Waste Management and Disposal, Hexachlorocyclohexane, 0105 earth and related environmental sciences, Environmental Monitoring
Abstract

Persistent organic pollutants (POPs) are the urgent risk for landfill, and should be considered before the landfill reclamation and resource. In this work, the distribution pattern of selected POPs in landfill and their ecological risks were investigated and assessed. The Σ20OCPs, Σ16PAHs and Σ19PCBs were around 157.4-329.2, 4103-19,190, and 79.1-340.3μgkg(-1) in aged refuses, with the mean value of 206.6, 8645.4, and 155.1μgkg(-1). While those in soil covers were only 6.3-75.4, 125.5-515.3 and 2.6-43.4μgkg(-1), with the mean value of 33.7, 257.7, and 24.0μgkg(-1), respectively. The maximum OPCs, PHAs and PCBs were in aged refuse with 13, 7, 10 disposal years. Whereas, the corresponding top content in soil covers were in 10, 13 and 16years, meaning that aged refuses were not the direct source for soil covers. Among 20 OCPs measured, α-HCH, δ-HCH, Dieldrin, and Endrin were presented in all aged refuses, with the mean concentration of 93.6, 52.1, 3.9 and 4.7μgkg(-1), respectively. For PAHs, PHE, FLU and PYR were the main composition, and reached to 1535, 1224, 1187μgkg(-1). The Σ7CarPAHs occupied around 33.3-49.9% of total Σ16PAHs tested, and could be used as the indictor for PAHs pollutant in landfill. PCB-5 content was around 40.7-263.3μgkg(-1) in aged refuses, and occupied around 51.5-81.8% of Σ19PCBs measured. The HCHs and DDTs in aged refuses were below the national standard GB15618-1995, and the corresponding Σ19PCBs concentrations met the standard of GB 13015-91, suggesting that aged refuse are accepted for the further utilization process.

Published
2015

28. Evolution processes of trace metal speciation in leachates with different ages from Laogang Refuse Landfill, Shanghai.

Author

Zhu, Nanwen, Lou, Ziyang, Zhao, Youcai, and Li, Anding

Subjects
TRACE metals, LANDFILLS, LEACHATE, DISSOLVED organic matter, HYDROPHILIC interactions
Abstract

Trace metals in leachates are forced to be removed with the implement of the latest Chinese standards of landfill pollution control (GB-16889, 2008), and understanding the speciation distribution processes is important for the development of the leachate treatment process. In this work, evolution processes of trace metal speciation were investigated according to the size fractions, hydrophobic/hydrophilic fractions, and geochemical species with the disposal time. The main trace metals, that is, Pb, Ni, Cr Cu, and Zn, were around 0.04–0.52 mg Pb/L, 0.24–1.22 mg Ni/L, 0.12–0.86 mg Cr/L, 0–0.28 mg Cu/L, and 0.58–1.98 mg Zn/L in leachates with the disposal ages of 2–12 years. Pb was found to predominate in suspended solids, with the percentage of 46–100%, and the dominant fraction of Ni and Zn was in dissolved fractions, with the percentage of 28–83 and 34–67%, respectively, while Cr and Cu scattered between suspended solid and dissolved fractions. The predominated geochemical species of Pb, Ni, Zn, and Cu was Me dissolved organic matter and Me CO3, while Cr was dominated as hydroxide complexations. For the hydrophobic distribution in leachates, the main part of Pb, Ni, Cr, and Cu was presented as hydrophobic fractions, with the percentage of >50%, while Zn predominated in the hydrophilic fractions. The evolution processes of trace metals are dependent on both the metals’ nature and the landfill conditions greatly, and the corresponding treatment process should be changed with the landfill ages. [ABSTRACT FROM PUBLISHER]

Published
2016
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34. Evolution processes of trace metal speciation in leachates with different ages from Laogang Refuse Landfill, Shanghai

Author

Lou, Ziyang, Zhu, Nanwen, Li, Anding, and Zhao, Youcai

Abstract

AbstractTrace metals in leachates are forced to be removed with the implement of the latest Chinese standards of landfill pollution control (GB-16889, 2008), and understanding the speciation distribution processes is important for the development of the leachate treatment process. In this work, evolution processes of trace metal speciation were investigated according to the size fractions, hydrophobic/hydrophilic fractions, and geochemical species with the disposal time. The main trace metals, that is, Pb, Ni, Cr Cu, and Zn, were around 0.04–0.52 mg Pb/L, 0.24–1.22 mg Ni/L, 0.12–0.86 mg Cr/L, 0–0.28 mg Cu/L, and 0.58–1.98 mg Zn/L in leachates with the disposal ages of 2–12 years. Pb was found to predominate in suspended solids, with the percentage of 46–100%, and the dominant fraction of Ni and Zn was in dissolved fractions, with the percentage of 28–83 and 34–67%, respectively, while Cr and Cu scattered between suspended solid and dissolved fractions. The predominated geochemical species of Pb, Ni, Zn, and Cu was Me dissolved organic matter and Me CO3, while Cr was dominated as hydroxide complexations. For the hydrophobic distribution in leachates, the main part of Pb, Ni, Cr, and Cu was presented as hydrophobic fractions, with the percentage of >50%, while Zn predominated in the hydrophilic fractions. The evolution processes of trace metals are dependent on both the metals’ nature and the landfill conditions greatly, and the corresponding treatment process should be changed with the landfill ages.

Published
2016
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35. RENEWABLE ENERGY IN CHINA.

Author

Yan Luguang, Ni Shouyuan, Li Anding, and Wu Zhijian

Subjects
RENEWABLE energy sources, GOVERNMENT policy on renewable energy sources, FOSSIL fuels, NATURAL resources, SOLAR energy
Published
1992

36. Photoredox-Catalyzed Isomerization of Highly Substituted Allylic Alcohols by C-H Bond Activation.

Author

Guo K, Zhang Z, Li A, Li Y, Huang J, and Yang Z

Abstract

Photoredox-catalyzed isomerization of γ-carbonyl-substituted allylic alcohols to their corresponding carbonyl compounds was achieved for the first time by C-H bond activation. This catalytic redox-neutral process resulted in the synthesis of 1,4-dicarbonyl compounds. Notably, allylic alcohols bearing tetrasubstituted olefins can also be transformed into their corresponding carbonyl compounds. Density functional theory calculations show that the carbonyl group at the γ-position of allylic alcohols are beneficial to the formation of their corresponding allylic alcohol radicals with high vertical electron affinity, which contributes to the completion of the photoredox catalytic cycle., (© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Published
2020
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