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Online since: December 2013
Authors: Mang Xue, De Dong Sun, Chun Ma, Ling Ling Wang, Jing Jing Ren, Jun Hao, Xin Xin Zhang
Effect of pypocholoride pretreatment on the disintegration of excess sludge
Lingling Wang1, a, Dedong Sun1,b, Jingjing Ren1,c,Chun Ma1,d , Jun Hao 1,e , Mang Xue 1,f and Xinxin Zhang 1,g
1 School of Light Industry and Chemistry Engineering, Dalian Polytechnic University, Dalian 116034, China
a wll1219@126.com, b sundedong@sina.com, c rjing322@sina.com, d chachilong@163.com,
e junhao103267@126.com, f mm5219@sina.com , g zxx790616@163.com
Keywords: Sewage sludge, Sludge lysis, Pypocholoride, Pretreatment
Abstract.
The biological gel structure properties of sludge resulted in the difficulty in anaerobic digestion [2].
The efficiency of digestion has often been limited by hydrolysis, which is widely regarded as the rate-limiting step due to the complex structure of WAS [3].
The biological gel structure properties of sludge resulted in the difficulty in anaerobic digestion [2].
The efficiency of digestion has often been limited by hydrolysis, which is widely regarded as the rate-limiting step due to the complex structure of WAS [3].
Online since: November 2007
Authors: Xiao Song Zhang, Xiao Yi Dong, Gui Yun Kai, Dong Qing Dong, Yan Fang Zhang, Zhi Wang
And this phase has the equilibrium structure of zinc blende crystal, which is displayed as an
underlying pattern [vertical lines in Fig. 1 (a)].
It is because that the symmetry of ZnS:Er quantum dots descend remarkably, additionally lower symmetry of the Er 3+ ions neighborhood structure causes the Γ8 states of 4I15/2 and 4I13/2 to split further into two Kramer doublet states, therefore more transitions occur and lead to the broad emission in photoluminescence spectra.
Barker: Nucleic Acids Research, Vol. 32 (2004), p. e28 [8] Thomas Schmidt, Gerd Muller, Lubomir Spanhel, Klaus Kerkel and Alfred Forchel: Chemistry of Materials Vol 10 (1998), p.65 [9] S.
It is because that the symmetry of ZnS:Er quantum dots descend remarkably, additionally lower symmetry of the Er 3+ ions neighborhood structure causes the Γ8 states of 4I15/2 and 4I13/2 to split further into two Kramer doublet states, therefore more transitions occur and lead to the broad emission in photoluminescence spectra.
Barker: Nucleic Acids Research, Vol. 32 (2004), p. e28 [8] Thomas Schmidt, Gerd Muller, Lubomir Spanhel, Klaus Kerkel and Alfred Forchel: Chemistry of Materials Vol 10 (1998), p.65 [9] S.
Online since: January 2010
Authors: Hossein Behniafar, Saeed Khosravi-Borna, Parvaneh Boland
Novel Modified Aromatic Polyamides and Polyimides Derived from a
Diphenyl ether-Based Diamine Containing Laterally-Attached Phenoxy
Phenylene Groups
Hossein Behniafar *, Saeed Khosravi-borna and Parvaneh Boland
School of Chemistry, Damghan University of Basic Sciences, 36715-364, Damghan, Iran
*e-mail: h_behniafar@dubs.ac.ir
Keywords: Polyamides, Polyimides, Solubility, Heat resistance, Polycondensation
Abstract.
In general, the high thermal stability of the polymers is ascribed to their wholly aromatic structures.
These results support that such a modification for a polymer structure can be used as an effective strategy for enhancing the processability while maintaining the high thermal stability.
In general, the high thermal stability of the polymers is ascribed to their wholly aromatic structures.
These results support that such a modification for a polymer structure can be used as an effective strategy for enhancing the processability while maintaining the high thermal stability.
Online since: February 2006
Authors: Jin Ping Xiong, Jing Mao Zhao, Hao Ye, Yu Zuo
Alloying elements
are generally introduced to improve corrosion resistance by modifying the composition and
structure of the oxide [1,2] and mechanical strength.
The structure, composition and electrochemistry behaviors of composite anodic film were examined.
Lide (ed.), Handbook of Physics and Chemistry (CRC Press, NY, 1978)
The structure, composition and electrochemistry behaviors of composite anodic film were examined.
Lide (ed.), Handbook of Physics and Chemistry (CRC Press, NY, 1978)
Online since: March 2004
Authors: Yukichi Umakoshi, Wataru Fujitani, Takayoshi Nakano
A lot of Ap-base ceramics have been developed to improve the
solubility, mechanical property and biological property [1], but crystal orientation of Ap in the
synthesized ceramics, which should be closely related to their properties, has been hardly
focused so far in spite of its anisotropic crystal structure of Ap based on a hexagonal lattice.
Elliot: Structure and Chemistry of the Apatites and Other Calcium Orthophosphates (Elsevier Science Amsterdam) (1994), p.1
Elliot: Structure and Chemistry of the Apatites and Other Calcium Orthophosphates (Elsevier Science Amsterdam) (1994), p.1
Online since: March 2012
Authors: Dan Jun Wang, Li Guo, Feng Fu, Xiao Dan Qiang, Yuan Yang
Microwave-Assisted Hydrothermal Synthesis of Ag/BiVO4 Architecture with enhanced Photocatalytic Activities
Li GUO a, Dan Jun WANGb*, Feng FUc, Xiao Dan QIANGd, Yuan YANGe
College of Chemistry &Chemical Engineering, Yan' an University, Shaanxi Key
Laboratory of Chemical Reaction Engineering, Yan' an 716000
aemail:guoli761118@163.com, bemail: wangdj761118@163.com, c email:FengFu@163.com,
d email:qiangxiaodan@163.com,e email:Yuan Yang@163.com
Keywords: microwave-assisted hydrothermal method; BiVO4; Visible-light driven photocatalytic activity
Abstract: BiVO4 microcrystals were prepared via a microwave-assisted hydrothermal process.
The as-prepared BiVO4 and Ag/BiVO4 photocatalysts were characterized by XRD, FE-SEM and UV-vis-DRS techniques, and the relationship between activity and morphology, energy band structure of the samples was also discussed. 1.
The phase structure and crystallinity of Ag loaded BiVO4microcrystal was examined by XRD measurement.
The as-prepared BiVO4 and Ag/BiVO4 photocatalysts were characterized by XRD, FE-SEM and UV-vis-DRS techniques, and the relationship between activity and morphology, energy band structure of the samples was also discussed. 1.
The phase structure and crystallinity of Ag loaded BiVO4microcrystal was examined by XRD measurement.
Online since: May 2013
Authors: Hai Feng Chen, Pei Song Tang, Jun Yue Zhu, Ting Ting Lin, Zhen Jiang, Chao Wan Tang, Ling Xiang Jia
Preparation YbFeO3 by Microwave Assisted Method and its Visible-light Photocatalytic Activity
Lingxiang Jiaa, Junyue Zhub,Tingting Linc, Zhen Jiangd, Chaowan Tange, Peisong Tangf, Haifeng Cheng
Department of Material and Chemistry, Huzhou Teachers College, Huzhou 313000, China
ajialingxiang123@qq.com, bzhujunyue123@qq.com,clintingting515@qq.com, djiangzhen512@qq.com, etangchaowan907@qq.com, ftangps@163.com, gheadder@hutc.zj.cn
Keywords: YbFeO3, visible-light photocatalysis, microwave method, methylene blue
Abstract.
All peaks of YbFeO3 after calcination at 800 oC can be well-indexed to the characteristic XRD peaks of the perovskite structure YbFeO3 according to the JCPDS card No. 47-0070 and there are no additional peaks observed, which indicates the successful synthesis of YbFeO3 without external impurities by microwave assisted method.
Conclusions The perovskite structure YbFeO3 was synthesized by a microwave assisted process and after calcination at 800 oC.
All peaks of YbFeO3 after calcination at 800 oC can be well-indexed to the characteristic XRD peaks of the perovskite structure YbFeO3 according to the JCPDS card No. 47-0070 and there are no additional peaks observed, which indicates the successful synthesis of YbFeO3 without external impurities by microwave assisted method.
Conclusions The perovskite structure YbFeO3 was synthesized by a microwave assisted process and after calcination at 800 oC.
Online since: May 2004
Authors: H. Koyuncu, Y. Guney, G. Yılmaz, N. Ural, R. Bakıs
Micrographs of k(ZnCl2) and k(CaCl2) show that the microstructure
belongs to the ''laminar'' type that consists of oriented clay plates accumulated in a face-to-face
structure.
In the samples, a flocculated structure occurred at a low temperature, while an agglomerated one was seen at a higher temperature.
Duffy, Environmental Chemistry, Oxford Univ.
In the samples, a flocculated structure occurred at a low temperature, while an agglomerated one was seen at a higher temperature.
Duffy, Environmental Chemistry, Oxford Univ.
Online since: June 2007
Authors: Joung Man Park, Sung Ryong Kim, Dae Hoon Kim, Dong Ju Kim, Min Hyung Kim
Matrix Structure and Properties
PEEK
Structure
Density (g/cm3) 1.3
Thermal conductivity (W/m-K) 0.29
Crystallinity (%) 35
Tensile Strength (Mpa) 101
diffusivity were compensated and there was little change of thermal conductivity with respect to
temperature.
Nielnsen: Industrial & Engineering Chemistry EC Fundamentals.
Nielnsen: Industrial & Engineering Chemistry EC Fundamentals.
Online since: November 2012
Authors: Lin Wang, Si Tong Cao
Polyamide 6 Microfiber Reinforced Porous Polyurethane Composites
Lin Wang1,a, Sitong Cao1,b
1Department of Chemistry and Textile Engineering, Jiaxing University, No.56, Yuexiu Road (South), Jiaxing, People’s Republic of China
awanglin30425367@163.com, bcaost168@yahoo.com.cn
Key Words: PA6 microfiber, Porous polyurethane, Tensile strength, Softness
Abstract.
Recently, PA6 microfiber reinforced PU composites have drawn much attention for researching on the structure and morphology of the composites, especially about the manufacturing method and structure of LDPE/PA6 blend fiber [3-8].
Recently, PA6 microfiber reinforced PU composites have drawn much attention for researching on the structure and morphology of the composites, especially about the manufacturing method and structure of LDPE/PA6 blend fiber [3-8].