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An environmental approach for used oil management in Asian cities: a Bangkok's experience 被引量:1
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作者 SHING TET LEONG PREECHA LAORTANAKUL 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2003年第6期734-743,共10页
This paper addresses increasing concern about the pollution threat of used oil being illegally dumped and the impact of oil on air pollution and freshwater ecosystems in Asian countries. Used oil is a very serious was... This paper addresses increasing concern about the pollution threat of used oil being illegally dumped and the impact of oil on air pollution and freshwater ecosystems in Asian countries. Used oil is a very serious waste management problem. These results call for management action such as maximising the collection and recovery of used oil. The Thai government recognizes the need to recycle used oil and has been active in encouraging programs to accomplish this goal. Thus unless new approaches and incentives are developed, used oil generation may become an increasing serious problem to our environment. The purpose of this study is to examine the technical and economic feasibility, of recycling used oils. In addition, this paper briefly discusses the problems to be overcome and outlines potential mechanisms for providing the necessary disposal controls in order to maximize the protection to public health and environmental quality from potential hazards posed by used lube oil disposal. 展开更多
关键词 BANGKOK health effects oil pollution recycling used oil collection
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Mechanism,Kinetics,and Thermodynamic Characteristics for the Demetallization of Used Lubricating Oil via Pyrolysis
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作者 Yang Haiyu Jiang Zhenxin +2 位作者 Chu Qingyan Jiang Peng Wang Ming 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS CSCD 2023年第2期113-127,共15页
This study analyzed the pyrolysis mechanism,developed a pyrolysis kinetic model,and determined the corresponding thermodynamic parameters for the removal of calcium from used lubricating oil using sulfurized calcium a... This study analyzed the pyrolysis mechanism,developed a pyrolysis kinetic model,and determined the corresponding thermodynamic parameters for the removal of calcium from used lubricating oil using sulfurized calcium alkyl phenolate(T-115B)as a model compound.The pyrolysis process and products were evaluated by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy.Visual inspection indicated that the removal of calcium from T-115B depended primarily on the destruction of micelles caused by the pyrolysis of compounds at high temperatures.The pyrolysis characteristics of T-115B at different heating rates were investigated by thermogravimetry and differential thermal analysis,which revealed two distinct pyrolysis phases.Thus,the pyrolysis mechanism can be described by a twostep model.The activation energy and thermodynamic parameters(ΔH,ΔG,andΔS)were determined by applying the Kissinger-Akahira-Sunose,Flynn-Wall-Ozawa,Friedman,and Starink methods;the average activation energies for T-115B pyrolysis obtained using these methods were 115.80,119.84,124.96,and 116.14 kJ/mol,respectively.Further,both stages of the pyrolysis reaction followed Fn mechanisms with n=1.39 in the first stage and n=0.86 in the second stage.This study provides reliable and effective pyrolysis models along with kinetic and thermodynamic parameters to facilitate the largescale industrial application of used lubricating oil. 展开更多
关键词 used lubricating oil sulfurized calcium alkyl phenolate pyrolysis decomposition kinetics THERMODYNAMICS non-isothermal method
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Effects of used lubricating oil on two mangroves Aegiceras corniculatum and Avicennia marina 被引量:1
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作者 YE Yong TAM N FY 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2007年第11期1355-1360,共6页
An outdoor experiment was set up to investigate the effects of used lubricating oil (5 L/m^2) on Aegiceras corniculatum Blanco. and Avicennia marina (Forsk) Vierh., two salt-excreting mangroves. A. marina was more... An outdoor experiment was set up to investigate the effects of used lubricating oil (5 L/m^2) on Aegiceras corniculatum Blanco. and Avicennia marina (Forsk) Vierh., two salt-excreting mangroves. A. marina was more sensitive to used lubricating oil than A. corniculatum and canopy-oiling resulted in more direct physical damage and stronger lethal effects than base-oiling. When treated with canopy-oiling, half of A. corniculatum plants survived for the whole treatment time (90 d); but, for A. marina, high mortality (83%) resulted from canopy-oiling within 3 weeks and no plants survived for 80 d. Base-oiling had no lethal effects on A. corniculatum plants even at the termination of this experiment, but 83% of A. marina plants died 80 d after treatment. Forty days after canopyoiling, 93% ofA. corniculatum leaves fell and no live leaves remained on A. marina plants. By the end of the experiment, base-oiling treatment resulted in about 45% ofA. corniculatum leaves falling, while all A. mar/na leaves and buds were burned to die. Lubricating oil resulted in physiological damage to A. corniculatum leaves, including decreases in chlorophyll and carotenoid contents, nitrate reductase, peroxidase and superoxide dismutase activities, and increases in malonaldehyde contents. For both species, oil pollution significantly reduced leaf, root, and total biomass, but did not significantly affect stem biomass. Oil pollution resulted in damage to the xylem vessels of fine roots but not to those of mediate roots. 展开更多
关键词 used lubricating oil MANGROVE Aegiceras corniculatum Avicennia marina
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Performance Deterioration Analysis of the Used Gear Oil 被引量:1
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作者 Qunfeng Zeng Guangneng Dong +1 位作者 Yanling Yang Tonghai Wu 《Advances in Chemical Engineering and Science》 2016年第2期67-75,共9页
In the present paper, we have investigated the tribological properties and microstructure of the used gear oil theoretically and experimentally. The deterioration process of the in-service gear lubricant oils was also... In the present paper, we have investigated the tribological properties and microstructure of the used gear oil theoretically and experimentally. The deterioration process of the in-service gear lubricant oils was also discussed. The viscosity and microstructure of oils running different mileages were analyzed by viscometer and Fourier Transform Infrared Spectroscopy (FTIR), respectively. In addition, the friction and wear behaviors of the friction pair of the GCr15 steel ball and disc were investigated using a ball on disc tribometer under different mileages’ gear oils lubrication conditions. These techniques give reproducible and reliable data with which to evaluate the severity of deterioration process of oils. The objective of this work is to understand the deterioration process of gear oil and analyze the influence of deterioration on the performance and microstructure of lubricant oils used in gear box. Possible explanations of deterioration process as well as its influence on friction and wear behaviors are also discussed. The results reveals the tribological properties of used oils depended on strongly the microstructure and its deterioration process of oil. 展开更多
关键词 used Gear oil Tribological Properties VISCOSITY FTIR DETERIORATION
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A Comprehensive Economic Assessment of Producing Biodiesel Derived from Used Cooking Oil Using the BioPro380 EX
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作者 Karabo Samuel Matome Clever Ketlogetswe Gagoitseope Mmopelwa 《Energy and Power Engineering》 CAS 2022年第9期491-508,共18页
The authors performed economic assessment of producing biodiesel at pilot scale using used cooking oil as feed-oil in a Bio-Pro 380 EX biodiesel reactor. The overall results suggest that the biodiesel production using... The authors performed economic assessment of producing biodiesel at pilot scale using used cooking oil as feed-oil in a Bio-Pro 380 EX biodiesel reactor. The overall results suggest that the biodiesel production using used cooking oil is a viable project even at large or medium scale. The payback period for producing biodiesel at a pilot scale of 31,320 liters per year was 1.5 years, which was 1 month longer than the payback period for a large plant capacity of 66,000 liters per year. The study demonstrated that the unit selling price and unit production cost are sensitive to the economic feasibility of biodiesel production, since price variations of BWP 1 result in at least a 13% increase and 12% decrease in profit, respectively. The study further revealed that feed-oil (used cooking oil) was the most expensive among all the inputs accounting for 61%, followed by methanol and direct labour with 19% and 13% respectively. The overall energy recorded to produce approximately 360 liters of biodiesel contributed to 2% only, suggesting that Bio-Pro 380 EX biodiesel reactor is relatively a low energy intensity processor. The situation is suitable for the promotion of biodiesel particularly in countries where initiatives to stimulate the development of biofuels are at its infant stage Botswana included. 展开更多
关键词 BIODIESEL used Cooking oil Unit Production Cost Cost To Capacity Analysis Sensitivity Analysis Bio-Pro 380 EX Unit Selling Price
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Citrus-based essential oils could be used for dengue vector mosquitoes control
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作者 Hafiz Azhar Ali Khan Waseem Akram 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2013年第6期504-504,共1页
Dear Editor The mosquitoes Aedes aegypli(I,) and Aedes albopictus (Skuse)(Diptera:Culicidae) are important vectors of dengue fever in tropical and subtropical parts of the world. Chemical control has been considered a... Dear Editor The mosquitoes Aedes aegypli(I,) and Aedes albopictus (Skuse)(Diptera:Culicidae) are important vectors of dengue fever in tropical and subtropical parts of the world. Chemical control has been considered as an effective tool for their management in different areas of the world.However, injudicious use of the chemicals result in environmental pollution,ill effects to humans and other animals,and the development of insecticide resistance,which ultimately limits the efficacy of many insecticides!’].Essential oils can be used for mosquito control with no harmful effects to the ecosystem and non-target organisms.Essentials oils from different plants have been found very 展开更多
关键词 Citrus-based essential oils could be used for dengue vector mosquitoes control
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Series 190 Diesel Engines Used in China's Oil Drilling
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作者 Liu Qimin(Chief Engineer,Jinan Diesel Engine Works) 《China Oil & Gas》 CAS 1996年第2期104-105,共2页
Series190DieselEnginesUsedinChina'sOilDrilling¥//LiuQimin(ChiefEngineer.JinanDieselEngineWorks)JinanDieselEn... Series190DieselEnginesUsedinChina'sOilDrilling¥//LiuQimin(ChiefEngineer.JinanDieselEngineWorks)JinanDieselEngineWorks,located... 展开更多
关键词 Series 190 Diesel Engines used in China’s oil Drilling
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Ridge-furrow rainwater harvesting with supplemental irrigation to improve seed yield and water use efficiency of winter oilseed rape(Brassica napus L.) 被引量:2
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作者 GU Xiao-bo LI Yuan-nong +1 位作者 DU Ya-dan YIN Min-hua 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2017年第5期1162-1172,共11页
Ridge-furrow rainwater harvesting (RFRH) planting pattern can lessen the effect of water deficits throughout all crop growth stages, but water shortage would remain unavoidable during some stages of crop growth in a... Ridge-furrow rainwater harvesting (RFRH) planting pattern can lessen the effect of water deficits throughout all crop growth stages, but water shortage would remain unavoidable during some stages of crop growth in arid and semiarid areas. Supplemental irrigation would still be needed to achieve a higher production. Field experiments were conducted for two growing seasons (2012-2013 and 2013-2014)to determine an appropriate amount of supplemental irrigation to be applied to winter oilseed rape at the stem-elongation stage with RFRH planting pattern. Four treatments, including supplemental irrigation amount of 0 (I1), 60 mm (I2) and 120 mm (I3) with RFRH planting pattern and a control (CK) irrigated with 120 mm with flat planting pattern, were set up to evaluate the effects of supplemental irrigation on aboveground dry matter (ADM), nitrogen nutrition index (NNI), radiation use efficiency (RUE), water use efficiency (WUE), and seed yield and oil content of the oilseed rape. Results showed that supplemental irrigation improved NNI, RUE, seed yield and oil content, and WUE. However, the NNI, RUE, seed yield and oil content, and WUE did not increase significantly or even showed a downward trend with excessive irrigation. Seed yield was the highest in 13 for both growing seasons. Seed yield and WUE in 13 averaged 3235 kg ha^-1 and 8.85 kg ha^-1 mm-1, respectively. The highest WUE was occurred in 12 for both growing seasons. Seed yield and WUE in 12 averaged 3089 kg ha^-1 and 9.63 kg ha^-1 mm^-1, respectively. Compared to 13, 12 used 60 mm less irrigation amount, had an 8.9% higher WUE, but only 4.5 and 0.4% lower seed yield and oil content, respectively. 12 saved water without substantially sacrificing yield or oil content, so it is recommended as an appropriate cultivation and irrigation schedule for winter oilseed rape at the stem-elongation stage. 展开更多
关键词 ridge-furrow rainwater harvesting (RFRH) supplemental irrigation winter oilseed rape seed yield oil content water use efficience (WUE)
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Analysis of China's Oil and Gas Policy in 2015 被引量:1
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作者 Chen Jiaru 《China Oil & Gas》 CAS 2016年第1期8-15,共8页
The reforms in oil and gas sector have been accelerated in 2015. The reform of mineral rights has begun and 6 oil and gas exploration zones in Xinjiang Autonomous Region have served as the tender pilots, breaking thro... The reforms in oil and gas sector have been accelerated in 2015. The reform of mineral rights has begun and 6 oil and gas exploration zones in Xinjiang Autonomous Region have served as the tender pilots, breaking through the requirements on the resources varieties, exploration phase and enterprise qual!fication. The right of importing and using of the crude oil has been gradually relaxed and 13 local refineries have obtained the right to use imported crude oil of 55.1888 million tons per year. The natural gas price for non-residential use was unified and a universal price was set ~r the incremental supply and existing supply. Tire Shanghai Petroleum and Gas Exchange (SHPGX) was established and laid foundation for the market mechanism to detervnine the price. The government governance has undergone continuous adjustments such as regulating the tax instead of charging the fees, streamlining administration and delegating power to tire lower levels.The Guidelines on Deepening tire Reform of State-owned Enterprises was released, symbolizing the accomplishment of the overall planning ~ the SOE reform. 展开更多
关键词 REFORM Mineral right Right of importing: Exporting and using of crude oil PRICING SOE reform
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TEST STUDY OF DETECTING OIL AND GAS BY USING REMOTE SENSING TECHNIQUE
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作者 Zhu Zhenhai, Zhang Jianzhong, Chen Baowen (Remote Sensing Application Institute, The Chinese Academy of Sciences) 《遥感信息》 CSCD 1990年第A02期37-38,共2页
Ⅰ The Indexes of Detecting Oil and Gas Resources The deeply buried reservoir which in a dynamic equilibrium state has a great pressure inside, and between it and earth surface there is a great difference of pressure.... Ⅰ The Indexes of Detecting Oil and Gas Resources The deeply buried reservoir which in a dynamic equilibrium state has a great pressure inside, and between it and earth surface there is a great difference of pressure. Therefore the hydrocarbon must spread and move vertically to the surface along the pressure gradient orientation. Hydrocarbons in the reservoir along some small rifts, cracks, joints and cleavages penetrate the overlying strata and seepage onto the surface. Thus the hydrocarbons become unvisble oil and gas signs. This process is called the phenomena of hydrocarbon microseepage of reservoir. Hydrocarbons microseepage in the process 展开更多
关键词 TEST STUDY OF DETECTING oil AND GAS BY USING REMOTE SENSING TECHNIQUE GAS
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Using Less Oil Despite the unquenchable thirst for oil to fuel nina's fast growing economy,the oil consumption growth rate is dropping
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作者 TONG LIXIA is an associate researcher at the Chinese Academy of International Trade and Economic Cooperation under the Ministry of Commerce 《Beijing Review》 2006年第14期34-35,共2页
At first glance, the official figures of China's oil consumption in 2005 seem a bit confusing. With a robust economic growth and rising annual oil imports, China made the surprise announcement that its oil consump... At first glance, the official figures of China's oil consumption in 2005 seem a bit confusing. With a robust economic growth and rising annual oil imports, China made the surprise announcement that its oil consumption growth rate was dropping sharply, from 15.3 percent in 2004 to 2.1 percent in 2005. Earlier, China's Ministry 展开更多
关键词 Using Less oil Despite the unquenchable thirst for oil to fuel nina’s fast growing economy the oil consumption growth rate is dropping
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Remaining useful life prediction based on the Wiener process for an aviation axial piston pump 被引量:32
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作者 WangXingjian LinSiru +2 位作者 Wang Shaoping HeZhaomin ZhangChao 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2016年第3期779-788,共10页
An aviation hydraulic axial piston pump's degradation fiom comprehensive wear is a typical gradual failure model. Accurate wear prediction is difficult as random and uncertain char- acteristics must be factored into ... An aviation hydraulic axial piston pump's degradation fiom comprehensive wear is a typical gradual failure model. Accurate wear prediction is difficult as random and uncertain char- acteristics must be factored into the estimation. The internal wear status of the axial piston pump is characterized by the return oil flow based on fault mechanism analysis of the main frictional pairs in the pump. The performance degradation model is described by the Wiener process to predict the remaining useful life (RUL) of the pump. Maximum likelihood estimation (MLE) is performed by utilizing the expectation maximization (EM) algorithm to estimate the initial parameters of the Wiener process while recursive estimation is conducted utilizing the Kalman filter method to estimate the drift coefficient of the Wiener process. The RUL of the pump is then calculated accord- ing to the performance degradation model based on the Wiener process. Experimental results indi- cate that the return oil flow is a suitable characteristic for reflecting the internal wear status of the axial piston pump, and thus the Wiener process-based method may effectively predicate the RUL of the pump. 展开更多
关键词 Axial piston pump Hydraulic system Remaining useful lifeReturn oil flow WEAR Wiener process
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