Advanced Materials Research Vols. 955-959

Abstract: the effect of dynamic change activities of enzymatic in Sugarcane field with different coating material was studied With three kinds of coated compound fertilizer as raw materials. Results show that the soil enzymatic activities of catalase,sucrase and urease increased first and then decreased at different sugarcane growth stage; By comparing the Coated compound fertilizer of coated materials of Idesia polycarpavar.vestita with CK, we realized the quantity of soil catalase increased 0.03mol/L、that of soil sucrase increased 0.91 mg/g、that of soil urease increased 0.05 mg/g and that of the production increased 23.7%. That was beneficial to the improvement of soil enzyme activity of coated compound fertilizer as raw materials oil of Idesia polycarpa var.vestita.

Abstract: The modified diatomite was prepared by calcination and alkali washing, and the feasibility of using modified diatomite for enhanced coagulation treatment of slightly polluted seawater was investigated in this study. SEM and BET analysis showed that the raw diatomite contained impurities, which were removed after refined and purified treatment. The use of diatomite as a coagulant aid improved interparticle bridging thus incorporating the cells into flocs more efficiently, producing settleable flocs of greater density, size and strength. The enhanced coagulation with ferric sulfate and modified diatomite improved the removal efficiency of turbidity, ammonia nitrogen, total phosphorus and COD_Mn in seawater samples. At the optimal diatomite dosage of 60 mg/L and ferric sulfate dosage of 6 mg/L, the removal efficiency of turbidity, NH₃-N, TP and COD_Mn reached 93.8%, 26.3%, 94.8% and 44.4% respectively. It has been proved that the enhanced coagulation through the ferric sulfate and modified diatomite, as coagulant aid and adsorbent, is more efficient and environmentally than using traditional metal coagulant only for treatment of slightly polluted seawater.

Abstract: With the improvement of human being’s living standard, people have increasingly higher demand for health and environment. In terms of dressing, they not only focus on brand clothing, but also are concerned about the factors that are favorable to human body and environment, such as whether the garment materials of the brand are environmentally friendly, healthy and comfortable. Among them, bamboo fiber is one of the ideal materials that have numerous advantages. This article aims to analyze the application of bamboo fiber fabric in design of brand clothing.

Abstract: Titanium dioxide (TiO₂) coating was prepared through dipping stainless steel net into titanium dioxide sol and then extracting it. The photocatalytic activities for all titanium dioxide coatings were tested by methyl orange degradation under ultraviolet and visible light irradiation. The photo-absorption property was determined by UV-Vis spectrophotometer. The titanium dioxide coating is photo-catalytically reactive for the degradation of methyl orange. The photo-catalytic activity is influenced by extraction times, degradation time, doping element and light source. La-doped titanium dioxide exhibits the best photocatalytic activity in comparison with undoped, V-doped and La-V-codoped ones. The degradation rate of methyl orange by La-doped titanium dioxide coating reaches 92% after 70 minutes irradiation under ultraviolet light.

Abstract: Two weak acid resins (WT-1, WT-2) with different pore structures were prepared through suspension polymerization from methyl acrylate (MA) and divinylbenzene (DVB). Cu²⁺ was employed as the adsorbate and bath experiments were carried out to investigate the adsorption performance of the two resins. The addition of porogen (toluene) enlarged the exchange capacity, specific surface area and average pore diameter of resins, leading to the faster adsorption rate and higher maximum adsorption capacity. The adsorption capacity increased 3.5~28.5% with the rise of porogen/monomer ratio from 0 to 30%. This work shows the porogen influence on the adsorption kinetics and thermodynamics of weak acid resins.

Abstract: Ag-modified CaBiO₂Cl photocatalysts were synthesized by the one-step solid state reaction method. The microstructure and morphology of catalysts were characterized by using X-ray diffraction, Scanning electron microscopy, and Energy dispersive X-ray detector (EDS) techniques. The photocatalytic activities of pure CaBiO₂Cl and Ag-CaBiO₂Cl catalysts were further evaluated by degrading methylene blue (MB) under visible-light irradiation. The measured UV-vis absorption spectra indicated that the degradation of Ag-modified CaBiO₂Cl has been improved by about 12% in comparison with pure CaBiO₂Cl. The enhanced photocatalytic activity in Ag-modified CaBiO₂Cl can be ascribed to the better morphologies of the composites due to the Ag additive.

Abstract: Fe-pillared bentonite was made into a paper-like composite by a papermaking technique using pulp fiber and activated carbon fiber. Orange II was used as a model compound to investigate the photocatalytic performance of the paper. SEM analysis showed that the catalytic paper had a porous structure originating from the layered fiber network, with Fe-pillared bentonite mostly embedded in the grooves along the axial direction of the carbon fibers. The optimum preparation conditions were: activated carbon fiber:Fe-pillared bentonite=1:2, activated carbon fiber:pulp fiber=5:3, the charges of Na2SiO3 and PAE were 2.5% based on the Fe-pillared bentonite and 0.4% based on the oven-dry fibers, respectively. The degradation ratio reached 85.2% at 180 min and after that little increase was observed. The catalyst could be repeatedly use and keep a high stability during the first 4 cycling use.

Abstract: In this study, three kinds of catalysts for ozone catalytic were fabricated and their effects on organic removal were investigated, moreover the influencing factors in manufacturing were investigated by orthogonal experiments. The prepared Cu/Al₂O₃, Mn/Al₂O₃ and Fe/ Al₂O₃ improved UV₂₅₄ removal of ozone by 12%, 3% and-2%, when ozone was combined with activated carbon filtration, the removal of UV₂₅₄ was improved by 16%, 14% and 8% respectively. Cu/Al₂O₃ was chosen as a model catalyst and its effluencing factors in preparation, including impregnation concentration, impregnation time and calcinations temperature, were analyzed in orthogonal experiments. The orthogonal experiments showed that impregnation time has the biggest effluence in catalytic effect, which followed by calcinations temperature and impregnation concentration.

Abstract: Poly (allylamine)-silica composites (PAA/SiO₂) was prepared via CPTCS as coupling agent and PAA as modifier. The structure and adsorption properties of silica gel, CPTCS-SiO₂ and PAA/SiO₂ were determinated by FTIR, structural analysis, TG analysis and adsorption test. The results show that PAA/SiO₂ had excellent adsorption capacities for Cu (II), Pb (II) and Ni (II) in aqueous solutions. Its adsorption capacities can reach 0.972mmol/g for copper ion at experimental conditions. Besides, PAA/SiO₂ also possessed excellent stability in the flow tests.

Abstract: The oil spill dispersant called “elimination agent of oil” is used to disperse the oil slicks to facilitate the natural elimination of oil. Oil spill dispersants are used to enhance the rate of natural dispersion of an oil spill at sea. There is growing acceptance worldwide that use of dispersants to counter the effects of an oil spill offers many advantages and can often result in a net environmental benefit when considered in relation to other response options. Timely spraying oil spill dispersants is the main measures to remove surface oil pollution and to prevent fires, when mechanical recycling cannot be used in case of emergency. Efficient and environmentally friendly oil spill dispersant meet both the emulsification dispersion and zero pollution to the environment, and has been more widely used and developed.