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Adsorption of Congo Red dye onto raw and chitosan-modified bentonite Shanping Lia,*, Jiangjie Cuib Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China alishanping@sdu.edu.cn, bcuijiangjie211@163.com, *Correspondent Keywords: Bentonite, Chitosan, Congo Red, Adsorption, Adsorbent, Modification Abstract.
Therefore, in recent years, considerable attention has been devoted to the study of different types of locally available, low cost and effective materials to remove dyes from the aqueous phase [7].
Experimental Materials.

Numerical Simulation of Laminar Flow Field in a Stirred Tank with a Rushton Impeller or a Pitch 4-Bladed Turbine Junling Fan1,a , Deyu Luan1,b 1 School of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, China akeda2973@163.com, bqddy05@163.com Keywords: Rushton impeller, pitch 4-bladed turbine, stirred tank, laminar model, numerical simulation Abstract.
In such cases, Poorly designed mixing processes cause substantial increases in waste production at the expense of valuable raw materials and desired products, especially, in the laminar flow regimes.
While efficient mixing is often (but not always) achieved under such conditions, there are many applications for which turbulence is precluded because fluids are too viscous or because they contain materials that are shear sensitive and may become damaged by vigorous agitation.
Nomenclature A Rushton blade length (m) C impeller off-bottomed clearance (m) D impeller diameter (m) H liquid height (m) M total torque (N·m) M1 torque from fluid pressure gradient (N·m) M2 torque from the fluid viscous shear stress (N·m) N shaft speed (r/s) P power consumption (W) S source term (dimensionless) T tank diameter (m) U velocity vector (m/s) Utip impeller tip speed (m/s) ur radial velocity component (m/s) uz axial velocity component (m/s) uθ tangential velocity component (m/s) w baffle width (m) μe fluid effective viscosity (Pa·s) ρ fluid density (kg/m3) field variable (dimensionless) molecular diffusion coefficient (dimensionless) Ω angular velocity (r/s) Acknowledgements The authors would like to thank the Scientific and Technological Key Task Program of Shandong province (No.2008GG10007008), for the financial support for the work.

Analysis and Evaluation of Heavy Metal Pollution of Surface Soil in Baicheng City Gang Wang*a School of Mechanical Engineering ,Baicheng Normal College, Jilin, China a haohehe@163.com Keywords: Baicheng City; Heavy Metal Pollution in Soil; Fuzzy Comprehensive Evaluation Method; Factor Analysis Method Abstract.
The key of factor analysis is to calculate feature value and accumulated contribution rate of relevant factors by the matrix of relevant coefficients; those in the living quarter can be seen in table 7.
The pollution area of Zn and Cr is large, indicating that pollution of these two metals mainly comes from additives of building materials of building in the urban areas and tyres of automobiles and waste batteries which are not processed well.
On the whole, the concentration distribution of heavy metal shows certain area difference which is mainly related to the functions of the areas and generally speaking, industrial areas and commercial areas are subject to heavy pollution. 2)Results from the research and analysis of the types and source of soil heavy metal pollution in Baicheng City via factor analysis show that the major pollution factors Hg, Cr, Cd, Cu and Pb of industrial areas are mainly from coal emissions and "three wastes" discharge from factories; the major pollution factors Pb, Cu, Zn, Ni and Cr of the green areas of the parks mainly come from household garbage deserted by residents; the major pollution factors Cu, Cr and Ni of the main roads are mainly from road construction, dust emission and road landfill; the major pollution factors Pb, Cd, Zn, Cr, As and Ni of living areas mainly come from vehicle exhaust emission, usage of addition agent for building materials and tires, improper disposal of wasted batteries

The possible mechanisms of cadmium accumulation in Tagetes erecta L. under macronutrient deficiency Qian Feng1,a, Peidong Tai2,b, Shasha Fu3, Peijun Li2, Yinqiu Zhang 2 1Department of Environmental Science and Engineering, Northeastern University at Qinhuangdao, Qinhuangdao, China 2 Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China. 3 Jiangxi Provincial Insititute of Water Sciences, Nanchang, China afengq1981@163.com, btaipeidong@126.com Keywords: Tagetes erecta L.; Cd accumulation; Nutrient deficiency; Organic acid; Phytochelatins Abstract.
Material and methods Plant material and culture.
Extraction of organic acids from plant materials was done according to the method reported by Shen et al. [15] and separation were conducted on reversed-phase HPLC according to the method of Wang et al. [16].
Acknowledgements This work was supported by Central University of basic scientific research expenses (N100323010), National Science Foundation of China (No.21077113 and No.20977095), Key program of National Science Foundation of China (40930739) and Special Fund for Water resource-scientific Research in the Public Interest (No.201001054).

Effect of heat treatment on anticorrosion of soft magnetic alloy Fe81Cr17Si1.5TiBRe Hong-da Deng1,a, Xiaowei Liu1,b, Xianlong Cao1,c, Meiyu Zhao2,d 1School of Metallurgical and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China 2Foreign Language Department, Chongqing University of Science and Technology, Chongqing 401331, China adhd7730@163.com, blxwi@tom.com, ccaoxianlong318@163.com, dfenny_zhao@163.com Key Words: Fe-base soft magnetic alloy; Heat treatment; anticorrosion; oilfield water Abstract: In the present work, the resistances to corrosion of heat treated soft magnetic alloy Fe81Cr17Si1.5TiBRe and untreated one have been comparatively studied, which were tested in neutral salt spaying tester, in 50%vol. hydrochloric acid (HCl) at 100, in humidity thermal oxidation tester, specially in simulating oilfield waters containing sulfide ion (S2-) and without S2-.
Mingyuan: Jounal of functional Materials, Vol. 36(2005), p. 1820, in Chinese

The effect of modified atmosphere packaging on the quality of sturgeon caviar at 0℃ Dan He 1,2,a, Laihao Li1, Wanjun Zhou1, Ya Wei1, Hui Huang1, Wanling Lin1, Shuxian Hao 1, b* 1South China Sea Fisheries Research Institute; Key Lab.
The success of this technology in extending seafood shelf time depends on a series of factors, such as the quality of the raw material used, good hygiene during process, packaging material, gas mixture, preservation temperature[12].
Materials and Methods Caviar Samples.
Journal of Food Engineering, vol. 70, pp. 564-570, 2005

Such processes are usually low in materials yield, intensive in energy consumption, capital investment and manpower, and hence, inevitably high cost.
Acknowledgement This work was financially supported by the National Basic Research Program of China(973 Program)(No.2011CB606302), and The National Key Technologies R&D Program of China (No.2011BAE21B01).
Katgerman, Microstructural features of intergranular brittle fracture and cold cracking in high strength aluminum alloys, Materials Science and Engineering A, 527 (2010) 1828-1832.

So the high dielectric constant (high-k) materials are used to replace silicon dioxide (SiO2) as gate dielectric.
Acknowledgements This work is supported by National Key Project for Basic Research of China (No. 2005CB623605), Fund of National Engineering Research Center for Optoelectronic Crystalline Materials (2005DC105003), NSF of China under Grant No. 60876069.

Key words: Biodiesel; Compound lipases; Rapeseed oil deodorizer distillate; Vitamin E Abstract.
Materials and methods Materials Rapeseed oil deodorizer distillate was donated by Yuanda Chemical Co.
Wang: Chemical Engineering and Proce.

Desaltation of the Polysaccharide of Nostoc Flagelliforme with Radial Flow Chromatography Sijun Yue1 Shiru Jia1 Yujie Dai1 Wei Guo,1Jingwen Wang1 Fengfeng Xue2 1 Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin University of Science and TechnologyNo. 29 of the 13th Avenue, TEDA, Tianjin, P.R.
China, 300457 2 Department of Water Conservancy Hebei Engineering and Technical Colleg Cangzhou, China 061001; yjdai@126.com, slxxff@126.com Keywords:Radial flow chromatography; Nostoc flagelliforme; Polysaccharide; Gel filtration; Desaltation.
Materials And Methods Materials and instrumentsThe fermentation liquid containing N.flagelliforme polysaccharides was obtained from the mixotrophic liquid cultivation of N.flagelliforme cells in a 20 L photo-bioreactor in our laboratory [19].