The principles, application and industrialization of biological desulphurisation methods are reviewed including biological filtering, biological trickling and biological scrubbing. At the same time, related researches on the biotreatment of H2S containing gas by using these biological desulphurisation methods are described. These biotreatment methods have been widely used in industry out of China for the purification of H2S containing gases such as natural gas, synthetic gas and fuel gas as well as and from ethylamine is made to absorb renewable process acid gas desulphurization. Mortherland relatively mature，industrial application instance has many been realized preliminary，such as emission desulphurisation，wet desulphurisation loop fluid circulation and regeneationzaisheng，etc. With Compared with mature development of the physical and chemical methods, the biological compared to the biochip method has its special superiority，such as low - cost，second pollution small，and so on.

The progress in numerical simulation for agitated flow field in stirred tank of non-Newtonian fluid is reviewed from three aspects, the control equations, the treatment of rotational impeller and the numerical methods. The generalized Newtonian fluid models are commonly adopted in the numerical simulation for non-Newtonian fluid for their advantages of simpleness in form and low computational complexity. The constitutive equations for viscoelastic fluid are highly nonlinear, which leads to a great difficulty in the study using computational fluid dynamics (CFD) method on the viscoelastic flow field in stirred tank, thus the correspond investigation is just at a preliminary stage. Reasonable simplification for the constitutive equations of viscoelastic fluid and application of proper numerical discretization method would be helpful to the progress in the simulation for viscoelastic fluid flow field in stirred tank.

Progress in the molecular simulation for pervaporation membranes is reviewed including inorganic membranes, polymeric membranes and inorganic-organic composite membranes. The microcosmic explanations for macroscopical experimental phenomena are analyzed, some existing problems are discussed, the development for future research is also prospected.

The investigation for energy-saving press filter is highly desired due to the technology development trend in solid-liquid separation and the actual energy shortage in today’s global. Based on this consideration, the progress in the theoretical research for press filter is introduced in this paper. For the van press filter, the discussion is emphasized on the comparison in the engineering test results with different pressure and starting point by using experimental data. Thus, the optimum operating conditions would be obtained. Furthermore, the industrial application of import vertical press filter is also discussed based on the test data and application status in output increase and energy saving.

The development trends of world ethylene industry raw materials is introduced, and the development situation of China ethylene industry raw materials is analyzed. According to the situation of insufficient ethylene supply, the exploitation of ethylene material resources is discussed. Different approaches to solve the problem are introduced, and their potentials in application are also estimated.

The clarification of fermentation broth is the first link in CPC separation and purification, which has a great influence on the quality, cost and production progress of the CPC product. The present paper provides several indexes for both of the membrane filtration process evaluation and the filtrate quality assessment in the filtration process of CPC fermentation broth. Parameters influencing the evaluation indexes are discussed with a mathematic model and quantitative models have been established, thus provides a rational route for filtrate quality control and production process optimization.

Reactor geometry has important effects on recirculation cells in reactor chamber. Recirculation cells above substrate affect not only thickness of film but also deposition rate uniformity. By modifying the reactor geometry into streamlined shape，the recirculation cells can be reduced even eliminated so that smooth and rectilinear flow prevails in the susceptor region. Among geometric parameters which affect natural convection， the reactor height plays the major role while the reactor diameter plays minor role. For optimized-shape reactor，the critical height for the onset of natural convection is about 2.5cm for D=20cm and 2cm for D=40cm at reference condition.

Straight-run gasoline separation was studied with a novel column structure, the dividing wall column. This process was simulated with a commercial software HYSYS, and then the optimized design parameters were obtained. Based on these parameters, operation conditions such as the reflux ratio and the liquid split ratio were investigated with a pilot plant. Experimental results revealed that a higher reflux ratio is beneficial to the product separation, while the energy consumption is relatively higher. Also, the liquid split ratio has a wider range for selection, which is an important factor for the product quality.

The swelling behaviors of Shengli coal in different solvents, such as THN, DMF, STA and REC, are investigated to observe the effects of solvent swelling on apparent viscosity of the coal slurries. Changes in the coal surface characteristics have been studied by using SEM, BET and FTIR. The results showed that the coal in different solvent has a different swelling ratio, and the effect of DMF on swelling is more obvious than that of THN, STA and REC. The swelling ratio increases with temperature, and the swelled coal presents an incompact sandwich structure having a lower specific surface area and a larger pore diameter.

A series of Fe/ZSM-5 zeolites with different contents of Fe were hydrothermally synthesized by changing the Si/Fe ratio (the same gel of SiO2/Al2O3=100) and their catalytic performance for toluene alkylation with methanol was investigated in a continuous fluid fixed bed reactor at normal atmosphere. The structure, pore properties and acidity of Fe/ZSM-5 zeolites were characterized by X-ray diffraction, electronic paramagnet resonance, low temperature N2 adsorption, NH3-TPD and Py-IR. The results indicate that the partial introduction of Fe atoms into the zeolite frameworks in the synthetic process does not destroy the ZSM-5 framework structure, while it leads to the decrease in crystallization capacity, the change in acidity and the lowering in the acid strength. As a result, the coke formation during the alkylation reaction process is suppressed. Hence, the stability of zeolite and the utilization ratio of methanol are improved.

CuO-ZnO-Al2O3-ZrO2/HZSM-5 hybrid catalysts were prepared by a coprecipitation sedimentation method for the direct synthesis of dimethyl ether (DME) from CO2 hydrogenation. The prepared catalysts were characterized by XRD, BET, H2-TPR and NH3-TPD techniques. The hydrogenation process was carried out in a continuous flow pressurized slurry reactor using medical paraffin as a liquid medium under different temperature, pressure, H2/CO2 molar ratio and space gas velocity. The increase in reaction temperature is beneficial to improve the conversion of CO2, while the selectivity for DME is decreased. The increase in pressure and H2/CO2 molar ratio can improve both the conversion of CO2 and the selectivity for DME. While, the increase in the space velocity would decrease both the conversion of CO2 and the selectivity for DME.

Oligomerization of 1-decene catalyzed by metallocene with constrained geometry, 2-Me4Cp-4, 6-tBu2-PhOTiCl2/Al(iBu)3/Ph3C+B(C6F5)4－, was studied. Effects of Al/Ti mole ratio and oligomerization temperature on 1-decene polymerization were investigated. The composition and structure of the obtained product were characterized by GC and 13C NMR methods. The results showed that the obtained product is a mixture mainly composed of dimer, trimer, tetramer and pentamer. This oligomer mixture has a high viscosity index (VI=238) and a low solidifying point (≤－62℃), which is a desired component for lubricant base oil.

The water-borne technology for polyester is reviewed with using different hydrophilic monomers, including trimellitic anhydride, dimethylmalonic acid, UV curable hyperbranched waterborne polyester, as well as sulphonate monomer. Methods to enhance the water resistant performance of the waterborne polyester and the related theory are summarized. The possible trends in development of waterborne polyester resins are prospected.

This review introduces the characteristics and research development of reaction injection molding nylon 6 (nylon 6-RIM), reinforced reaction injection molding nylon 6 (nylon 6-RRIM), mat-molding reaction injection molding nylon 6 (nylon 6-MMRIM) and nylon 6 block copolymer RIM (NBC-RIM). The application advantages of nylon 6-RIM in various fields are discussed.

A novel superabsorbent resin was prepared by graft copolymerization of acrylic acid (AA) onto xanthan gum（XG）with N,N′-methylene diacrylamide as a corsslinking agent initiated with potassium persulfate. The influence of reaction conditions on the absorbency was discussed. The graft copolymers were characterized by means of Fourier-transform infrared spectroscopy（FT-IR）, X-ray diffraction（XRD）, and polarizing microscope (PM). The best conditions for the grafting reaction were found to be that the mass ratio of AA to XG is 6:1, the mass ratio of initiator and crosslinking reagent to xanthan gum is 0.01 and 0.003 respectively, the reaction temperature is 60℃ and the reaction time is 4h. The graft copolymer synthesized with the optimized reaction condition can absorb 854 g/g distilled water and 156 g/g normal saline.

Methoxy polyethylene glycol monomethacrylate eaters are synthesized from methacrylic acid (MAA) and methoxy polyethylene glycol (MPEG). A composite TN inhibitor for methacrylic acid is prepared beforehand using pretreatment method. Effect of MPEG molecular weight, temperature and reaction time on the esterification are discussed. The TN inhibitor is proved to have excellent inhibition ability to the polymerization of MAA. With 0.75% of TN, MAA does not visible polymerize at 120 ℃ for 20 h. While, MPEG starts to decompose at 140 ℃, where the —OH group is oxidized to C＝O in some extent. The mixture of TN and MPEG is stable at 120 ℃, where the esterification with MAA can be achieved to 99%. The esterification rate decreases with the increase of MPEG molecular weight at the early 4 h, but there is little effect of MPEG molecular weight after 4 h reaction when the esterification rate is above 80%.

ABPSH40/ PTFE composite membranes were prepared by casting ABPSH40 resin solution onto the surface of modified porous PTFE films. Microstructure of the composite membranes was studied by SEM, the methanol permeability was analyzed by GC, and the proton conductivity was investigated by AC impedance. Results showed that the ABPSH40 resin is well plugged into the micropores of PTFE. Compared with ABPSH40 membranes, the dimensional stability and mechanical strength of the composite membranes are both apparently improved. The ABPSH40/ PTFE composite membranes have lower methanol permeability and a comparable proton conductivity with Nafion membrane. It is prospectively that the ABPSH40/ PTFE composite membranes can be used in DMFC.

Hollow carbon fiber was prepared from mesophase pitch by spining and carbonization at different temperatures. The cross section of the as-prepared hollow carbon fiber was observed by SEM. Effect of carbonization temperature on the electromagnetic performance of the hollow carbon fiber was studied by a bow testing system. The hollow carbon fiber carbonized at 900℃ has the largest electromagnetic energy loss. Effect of the laminate packing ways on the electromagnetic performance of composites was also investigated by the bow testing system. The eligible bandwith of composite is 10GHz and the maximum radar absorption is －25 dB when the carbon fibers are across packed.

Opal templates were rapidly assembled from monodisperse SiO2 microspheres as building blocks by vertical sedimentation in an airtight oven at 30—45 ℃ and in a certain humidity. With a precursor composed of 0.035mol/L Zn (NO3)2 and 0.05mol/L TAA ethanol solution，ZnS photonic crystals with opal structure were prepared by solvothermal synthesis method repeatly. ZnS photonic crystals with inverse opal structure were obtained by removing the opal template after immersing in 2%—5% HF acid for 4—5 h. The morphology，component and optical properties of the synthetic samples were tested and compared. Results of XRD，SEM，and UV-Vis indicated that ZnS nanocrystals can grow in and fill in the void of opal template，and SiO2 microspheres of templates are dissolved so as to form some three dimensional ordered porous structure and to form the inverse opal ZnS photonic crystals. Compared with opal templates，ZnS-opal and inverse opal ZnS photonic crystals assembled with SiO2 spheres in the same diameter show good optical properties and exhibited photonic band gap. The photonic band gap position of inverse opal ZnS moves towards UV area compared with opal and ZnS-opal.

Nano-Fe3O4 particles were prepared by oxidative precipitation together with weak exterior magnetic field induction. The crystalline form，morphology and magnetic properties of the prepared particles were characterized by using XRD，SEM and VSM. The introduction of a weak magnetic field could accelerate the phase transformation of goethite (α-FeOOH) to magnetite (Fe3O4). The prepared nano-Fe3O4 particles have a spinel structure and are well crystallized. Induced by the weak magnetic field，the particles tend to be formed with a polyhedron morphology with a narrower particle size distribution and a larger diameter. Due to the changes in crystallinity，morphology and size distribution，the prepared nano-Fe3O4 particles have a higher saturation magnetization and a stronger coercive force.

This paper gives an insight into recent technological progresses in the production of bioethanol using surface engineered yeast，which provides strategies to genetically immobilize amylolytic，cellulolytic and xylanolytic enzymes on yeast cell surface for the production of fuel ethanol from biomass. The expression system of recombinant saccharomyces cerevisiae utilizing starchy and lignocellulosic biomass is highlighted，and its potential of application in bio-ethanol production and also present existing problems are primarily summarized.

Anaerobic ammonium oxidation (Anammox) is a new and promising biological nitrogen removal technology. It is a burning issue due to its high-rate and cost-effectiveness for nitrogen removal from wastewater. However，Anammox bacteria presents a very long doubling time and low cellular yield，and is susceptible to environmental conditions. Therefore，it is necessary to take careful methods to cultivate Anammox biomass. Based on the characteristics of the Anammox enrichment and the seeding sludge sources，the enrichment techniques are introduced and discussed in this paper. It is proposed that the enrichment course of Anammox culture can be accelerated with useful controlling and enhancing strategies.

Due to a series of food safety incidents，food safety has obtained more attention in our country. The detection of pathogenic microorganisms in food using immunomagnetic microsphere(IMMS) is more convenient and faster than conventional detection methods. The application principle and preparation methods of IMMS are reviewed. The application of IMMS for microorganism detection in food is further presented，and at the same time，the application of IMMS in conjunction with other detection methods such as PCR，ELISA，FIA and ECL applied in rapid pathogens detection is also introduced. This approach will become a trend in the development for food microorganism detection.

The selective hydrogenation of cinnamaldehyde to cinnamyl alcohol catalyzed by Mucor sp. JX23 fermentation broth was studied. Effects of different factors on cinnamaldehyde conversion and the selectivity to cinnamyl alcohol were investigated. The hydrogenation product was qualitatively analyzed by GC-MS and quantitatively analyzed by HPLC. The best results were obtained with cinnamaldehyde conversion of 82.9% and cinnamyl alcohol selectivity of 90.4% when cinnamaldehyde concentration was 3.0 g/L at pH 6.0，and reaction temperature was 28℃ for 70h reaction time.

Growth factors containing wound dressing plays an important role in the treatment of tissue repair. This review first introduces the sustained-release mechanisms of the drug delivery systems. In particular，the progress of growth factors containing wound dressing in accelerating cellular growth and proliferation and wound repair is reviewed. Finally，the challenges and problems of the present growth factors containing wound dressing are discussed.

Zinc acetylsalicylate was synthesized by solid-liquid phase reaction with the starting materials of ZnSO4•7H2O and acetylsalicylic acid (ASP). The product was characterized by X-ray powder diffraction，FT-IR and DSC. The X-ray powder diffraction data indicated that the crystal structure of the complex belonged to monoclinic system. The lattice parameters are a = 1.1449 nm，b = 1.4048 nm，c = 0.9247 nm，β = 94.46°. The optimized conditions for the synthesis are n(ASP)∶n(Zn2+) = 2∶1，pH = 6，reaction temperature 80 °C，and reaction time 30 min，with which the yield of zinc acetylsalicylate is 82.5%.

Glycerol carbonate was synthesized through the reaction of glycerol with urea using ZnSO4 as catalyst. The product glycerol carbonate was confirmed by IR and MS. The release of carbon dioxide from glycerol carbonate provides the target product glycidol under the catalysis of sodium phosphate. Several factors for the carbon dioxide release reaction were investigated，such as reaction time，temperature，pressure，type and dosage of catalysts etc. The appropriate reaction conditions were obtained from response surface methodology as：reaction time 4 h，reaction temperature 215 ℃，reaction pressure 2 kPa，amount of catalyst 2.5 %(mass ratio). After rotary evaporation，glycidol was analyzed with IR，HNMR and GC，and the yield of which was 83.8% as measured by GC.

The emission of nitrogen oxides (NOx) from stationary sources，primarily from power stations，industrial heaters and cogeneration plants，represents a major environmental problem. This paper intends to give a general review over the advances in non-thermal plasma assisted selective catalytic reduction (SCR) of NOx with lower hydrocarbon compounds. In the last decade，the non-thermal plasma induced SCR of nitrogen oxide with low hydrocarbon compounds has received much attention. The different hydrocarbons (≤C3) used in the research are discussed. As we know，methane is more difficultly activated than non-methane hydrocarbons，such as ethylene and propylene etc. The reduction mechanism is also discussed. In addition，aiming at the difficulties existed，the direction for future research is prospected.

The fouling mechanisms of some organic substances in the feed water of reverse osmosis (RO) system are introduced. The influences of operating conditions，membrane characteristics and solution chemistry to the process of fouling are discussed. In addition，some methods to control and reduce the organic fouling of RO membrane are summarized mainly including appropriate pretreatment，effective cleaning method and feasible membrane surface modification. Finally，the existing problems that need to be concerned for future researches are indicated.

The desorption behaviors of oil pollutants in water-soil system under static conditions are studied by a batch equilibrium method，including the desorption dynamics，isotherms and influencing factors. Experimental results illustrated that the desorption of oil pollutants in water-soil system is very fast，the desorption balance could be achieved within 40 min. The desorption isotherms are in an agreement with the Freundlich equation model. The desorption behaviors are affected by several factors，such as temperature，pH，ionic strength(Ca2+)，content of organic substances，content of sand in soil and the soil particle size and so on.

The removal of Cd2+ ions through ultrafiltration from aqueous solution using anionic surfactant SDBS added with nano SiO2 was studied. Effects of nano SiO2 addition and pH on the ultrafiltration process were investigated. The permeation flux was increased by 25% through the addition of nano SiO2, the removal of Cd2+ was also increased in some extent, while the permeated SDBS concentration became lowered. The permeation flux and the rejection of SDBS and Cd2+ are affected by the pH of the solution, which would become lowered when increasing the nano SiO2 addition. In addition, the membrane fouling was mainly due to the the membrane surface adsorption resistance and the membrane pore blocking resistance.

The influence of microorganism metabolites，such as soluble microbial products (SMP) and extracellular polymeric substances (EPS)，on membrane fouling was examined during the operation of membrane bioreactor(MBR). The activated sludge samples were taken from a laboratory-scale MBR and used to investigate their filtration resistance in different phases. Results showed that the accumulated SMP and EPS in the MBR have a negative effect on membrane filtration. The SMP，especially those with molecular weight (Mw) of 3—10 kDa，are positively correlated to the pore-blocking resistance. The cake layer formation is the main factor resulting in membrane fouling，and is strongly affacted by the amount of EPS and the SMP with MW＞10 kDa. The major components of EPS in cake layer are proteins，polysaccharides and humic substances as analyzed by Fourier transform infrared spectroscopy (FTIR)，while the dominant components in SMP are polysaccharides and humic substances.

The chemical structure of hemicellulose isolated from sugarcane bagasse was characterized by FT-IR，1H-NMR，13C NMR and ion chromatography. The pyrolysis characteristics and kinetics of hemicellulose at different heating rates were studied by thermogravimetric analysis (TG) coupled with Fourier transform infared spectromotry (FTIR). Results show that sugarcane bagasse hemicellulose are composed mainly of L-arabino-D-xylans with minor quantities of galactose，glucose，glucuronic acid and glacuronic acid，which is a typical structure of straw hemicellulose. The pyrolysis process of sugarcane bagasse hemicellulose can be divided into four stages，and the major reaction stage takes place between 200 to 315 ℃ with a shoulder-shaped peak at about 230 ℃. The pyrolysis remnants of coke have a higher proportion about 20% at 700 ℃. The pyrolysis kinetics can be simplified as a first-order reaction and the activation energies at different stages are 118 kJ/mol，50 kJ/mol，144 kJ/mol and 34 kJ/mol，respectively. During the hemicellulose pyrolysis process，the free water released out firstly，followed by the depolymerization and dehydration. The fission of glucosidic bond and carbon-carbon bond produce hydrocarbons，alcohols，aldehydes，acids etc.，which may decompose further into CO2，CO and other gases. FTIR analysis showed that the gaseous products are mainly vapor，CO2，CO，CH4 and other small-molecule compounds.