检索结果-南通市图书馆

Influence of biosurfactant on the diesel oil remediation in soil-water system

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2006年第3期18卷 587-590页

作者： LI Yu-ying ZHENG Xi-lai LI Bing Department of Chemistry and Environmental Engineering Wuyi University Jiangmen 529020 China Institute of Environmental Science and Engineering Ocean University of China Qingdao 266003 China

There were six high diesel oil degrading bacteria strains isolated from the oil contaminated soil that collected from Linzi City. The strain YI was able to produce biosurfactant rhanmolipid when cultivated on diesel oil as carbon source. The critical micelle concentrations （CMC） of rhanmolipid in water and in the soil were measured respectively according to the correlation between the surface tension of the medium and the added rhamnolipid concentration. The results showed that the CMC of rhanmolipid in water was 65 mg/L, and was 185 mg/L in soil. The tests on diesel oil biodegradation were conducted with the addition of different concentrations of rhamnolipid in water and in soil respectively. When 0.01% rhanmolipid was added to water, the diesel oil degradation was enhanced. On the contrary, when the same concentration of rhanmolipid was added to the soil, the degradation of diesel oil was inhibited. The results suggested that the rhamnolipid could enhance the diesel oil biodegradation, indicating that the concentration of rhamnolipid was higher than the corresponding CMC in the medium. Kinetics parameters for the diesel oil biodegradation parameters such as biodegradation constant （λ）, coefficient of correlation （r） and half life （t1/2） in both tests were numerically analyzed in this paper, indicating that the moderate concentration of rhamnolipid in the medium could not only enhance the extent of diesel oil biodegradation but also shorten the time for oil remediation.

关键词： biosurfactant diesel oil remediation bacteria

Synthesis of Ni_2P promoted trimetallic NiMoW/γ-Al_2O_3 catalysts for diesel oil hydrotreatment

在线全文

学校读者我要写书评

暂无评论

Journal of Natural Gas Chemistry 2011年第2期20卷 117-122页

作者： Ling Lan Shaohui Ge Kunhong Liu Yuandong Hou Xiaojun Bao College of Chemical Engineering China University of Petroleum Beijing 102249 China Petrochemical Research Institute PetroChina Company Limited Beijing 100195 China

The Ni2P promoted and γ-Al2O3 supported NiMoW sulfide catalyst consisting of 4 wt% Mo, 22 wt% W, 2 wt% Ni and 2.5 wt% Ni2P was synthesized by a co-impregnation method. The catalysts were characterized by N2 adsorption-desorption, X-ray diffraction （XRD）, diffuse reflectance infrared Fourier transform （DRIFT） spectroscopy, NH3 temperature-programmed desorption （NH3-TPD） and transmission electron microscopy （TEM）. The results showed that Ni2P, Ni, Mo and W species were highly dispersed over γ-Al2O3. The hydrodesulfurization （HDS） of dibenzothiophene （DBT） showed that the presence of Ni2P brought a strong promotional effect on the HDS activity, which was further confirmed by the HDS and hydrodenitrogenation （HDN） of diesel oil under industrial conditions. The enhancement in HDN activity and stability by Ni2P addition could be attributed more to the effect of new active sites of Ni2P than that of acidity modification. The as-prepared Ni2P-NiMoW/γ-Al2O3 catalyst showed better hydrotreating performance than NiMoW/γ-Al2O3 and commercial catalysts.

关键词： NiMoW sulfide Ni2P phosphide hydrodesulfurization hydrodenitrogenation diesel oil

Volatilization behaviors of diesel oil from the soils

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2004年第6期16卷 1033-1036页

作者： LIYu-ying ZHENGXi-lai LIBing MAYu-xin CAOJing-hua InstituteofEnvironmentalScienceandEngineering OceanUniversityofChinaQingdao266003China.

The volatilization of diesel oil, Shengli crude oil and 90# gasoline on glass surface of petri dishes were conducted at the ambient temperature of 25℃. diesel oil evaporates in a power manner, where the loss of mass is approximately power with time. 90# gasoline evaporates in a logarithmic with time. Where as the volatilization of Shengli crude oil fit either the logarithmic or power equation after different time, and has similar R2. And the effects of soil type and diesel oil and water content on volatilization behavior in unsaturated soil were studied in this paper. diesel oil and water content in the soils play a large role in volatilization from soils. Appropriate water helps the wicking action but too much water stops it. The wicking action behaves differently in four different types of soils in the same volatilization experiment of 18% diesel oil content and air-dry condition.

关键词： volatilization diesel oil power curve

Sulfur-Selective Desulfurization of Dibenzothiophene and diesel oil by Newly Isolated Rhodococcus erythropolis NCC-1

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2007年第3期25卷 400-405页

作者：李玉光马洁张倩倩王长水陈倩 Department of Chemistry Capital Normal University Beijing 100037 China Beijing Center for Disease Prevention and Control Beijing 100013 China

A dibenzothiophene （DBT）-desulfurizing bacteria strain was isolated from oil-contaminated soils and identified as Rhodococcus erythropolis NCC-1. Strain NCC-1 was found to convert DBT to hydroxybiphenyl （2-HBP） via the 4S pathway and also be able to use organic sulfur compounds other than DBT as a sole sulfur source. The strain could desulfurize 4,6-dimethyldibenzothiophene （4,6-DMDBT）, which is one of the most recalcitrant dibenzothiophene derivatives to hydrodesulfurization. When two type of oils, a model oil [n-hexadecane （n-C16） containing DBT] and a hydrodesulfurized diesel oil with various organic sulfur compounds, were treated with Rhodococcus erythropolis NCC-1 cells, the total sulfur content significantly decreased, from 150 to 20 mg/L for n-C16 and from 554 to 274 mg/L for diesel oil. The newly isolated strain NCC-1 is considered to have good potential for application in the biodesulfurization of fossil fuels.

关键词： biodesulfurization Rhodococcus erythropolis dibenzothiophene diesel oil

Effect of Biodiesel on Oxidation Stability, Detergency and Antiwear Ability of diesel oil

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Petroleum Processing & Petrochemical Technology 2011年第4期13卷 58-63页

作者： Wu Jiang Chen Boshui Fang Jianhua Wang Jiu (Department of Petrochemistry, Logistical Engineering University, Chongqing 401311) Dept. of Petrochemistry Logistical Engineering University University Town Chongqing 401311 China

Different contents of biodiesel and petrodiesel were incorporated into diesel engine oils. The oxidative stability, detergency and antiwear performance of the formulated diesel oils were evaluated. The results indicated that, compared with petrodiesel, biodiesel was more liable to promote oxidation degradation of diesel oils, leading to worse oxidative stability, detergency and antiwear ability of the oils.

关键词： biodiesel diesel oil oxidation stability detergency antiwear ability

Effect of Resin Composite Materials Containing Tourmaline Powders Modified with Lanthanum Element on diesel oil Combustion

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2007年第S1期25卷 236-239页

作者：刘立华梁金生薛刚丁燕吴晓明 Institute of Power Source &Ecomaterials Science Hebei University of Technology

The resin composite materials (RCM) were prepared by the method of doping resin with tourmaline powders modified with lanthanum element. It was characterized by scanning electron microscope (SEM), IR radiation determination, X-ray diffraction (XRD), and fourier transform infrared spectroscope (FTIR). The results showed that the RCM could radiate higher intensity of far infrared. The molecular movement was strengthened and the inter-molecular contacts were easily reduced when the diesel oil was dealt with the RCM. The effects of the RCM on the oil consumption and air pollutant emissions of oil-burning boiler were investigated. The oil-saving rate of the RBS·VH-1.5 boiler dealt with the RCM was 2.76%, and the reducing rates of CO and NO in the exhaust gas were 32.9% and 15.8%, respectively.

关键词： lanthanum element resin composite materials tourmaline far infrared diesel oil combustion rare earths

Effects of diesel oil on the polychaete Annelida in model benthic ecosystem

在线全文

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 1994年第3期13卷 425-431页

作者： Tang Senming Chen Xiaolin Zhuang Dongfa Wu Shengsan Lin Yu Cai Ziping and Zheng Fengwu(This project was supported by the National Natural Science Foundation of China.(Third Institute of oceanography, State Oceanic Administration,Xiamen 361005, China)

An experiment about the effect of diesel oil pollution on the model benthic ecosystem was conducted inthe land-based tank at the 3rd Institute of Oceanography, State Oceanic Administration, in Xiamen, added with No.0 diesel oil at concentrations of 5, 25, 125, 625 mg/dm3 in water of series sub-tanks for 16 h. The changes in polychaete community were studied in the period of two weeks with results that though all concentrations did not basically altered the population structure and composition, the total biomass decreased significantly and individualstended to be smaller in size. The average weight of individual decreased with the increase of diesel pollutant stress.

关键词： Polychaete benthic ecosystem model experiment diesel oil pollution effect

Impact Assessment of diesel oil on the Zhe Oyster （Crassostrea plicatula） Using RAPD Analysis

在线全文

学校读者我要写书评

暂无评论

Journal of Life Sciences 2013年第2期7卷 97-104页

作者： Anglv Shen Chunyan Ma Liu Shao East China Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Shanghai 200090 China College of Fisheries and Life Shanghai Ocean University Shanghai 201306 China

The lethal and sublethal effects of oils on aquatic organisms have been widely investigated, but the potential molecular impacts of oils on aquatic organisms are remaining unclear now. In order to realize the effects of diesel oil on the Zhe oyster, the RAPD （random amplified polymorphic DNA） technique was used. RAPD is a useful assay procedure for the detection of genotoxin-induced DNA damage and mutations. In the present study, the Zhe oysters were exposed to diesel oil at different concentrations and for different exposure periods. The results showed that the DNA band change in RAPD profiles of oysters following diesel oil treatment included loss of normal DNA bands, the appearance of new DNA bands and variations in DNA intensity compared to oysters not exposed to diesel oil. The effects of changes to GTS （genome template stability） were time- and concentration-dependent, the GTS of 10 mg/L was 82.46%, 80.70% and 63.15% in the 8, 16 and 32 days, the GTS of 20 mg/L was 75.44%, 71.93% and 56.14% in the 8, 16 and 32 days, the GTS of 40 mg/L was 73.68%, 70.18% and 56.14% in the 8, 16 and 32 days, respectively. The DNA polymorphisms detected by RAPD analysis could be used as a useful biomarker assay for the detection of genotoxic effects in diesel oil pollution on the oysters, and may be useful for environmental contamination risk assessment.

关键词： diesel oil Zhe oyster RAPD GTS DNA damage biomarker.

The Nitrogen Components in RFCC diesel oil

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Nitrogen Components in RFCC Diesel Oil