World Journal of Environmental Science and Engineering is an international, peer-reviewed open access journal dedicated to advancing research the field of environmental science and engineering. The journal provides a rapid publication process to ensure wide dissemination of high-quality articles to scientists, professionals, and interested individuals worldwide. Our goal is to serve as an efficient, reliable, and trusted platform for scholars and readers, publishing cutting-edge research in the field.
Abstract: This year, with the continuous improvement of China's subway system, serious corrosion problems of metal buried pipelines laid along the subway have attracted social attention. In order to discuss the corrosion mechanism, this paper briefly describes the corrosion status and characteristics of the subway stray current on the buried metal pipes, and introduces the characteristics of the subway stray current on the buried metal pipes, such as fast corrosion speed, large strength and wide influence range. The corresponding corrosion mechanism is summarized, and the detection and protection methods of stray current at home and abroad are introduced. Including pipe to ground potential test, soil potential gradient test, test piece method or polarization probe method test, current probe method test, intelligent stray current detector (SCM) test, corrosion inspection piece test, etc. The protection method of "giving priority to plugging, taking drainage as auxiliary, combining plugging with drainage, and strengthening monitoring" is proposed.Abstract: This year, with the continuous improvement of China's subway system, serious corrosion problems of metal buried pipelines laid along the subway have attracted social attention. In order to discuss the corrosion mechanism, this paper briefly describes the corrosion status and characteristics of the subway stray current on the buried metal pipes, and...Learn More
Abstract: In order to strengthen the scientific and technological research work of cyanobacteria control in Taihu Lake, the "Taihu (Meiliang Lake) water transfer on the control of cyanobacteria, improve lake water quality" project declared by Wuxi Hydraulic Society was approved by the municipal Association for Science and Technology. By further studying the effect of pumping station water transfer on controlling cyanobacteria and improving the water quality of Meiliang Lake, it is of great practical significance to implement the comprehensive water environment management of Taihu Lake basin and give full play to the ecological and social benefits of Taihu Lake. This project mainly through the pump station water transfer test work, synchronously monitoring wind direction, water level, flow, water quality (dissolved oxygen, total phosphorus, total nitrogen, permanganate index, algae density, etc.) data, combined with the waterway section data measured in advance to prepare a river network file, reasonably determine the simulation calculation range, determine the boundary conditions and calculation period. MIKE11 hydrodynamic model and water quality convection and diffusion model were adopted for simulation calculation and analysis, and model verification was carried out, achieving ideal simulation results. The analysis showed that the water transfer test had little effect on pollutant concentration, and the comprehensive evaluation category of Meiliang Lake water quality did not change, still classified as V ~ poor V, and the main items exceeding the standard were total phosphorus and total nitrogen. During the experiment period of 8 days, the water transfer reduced the permanganate index by 147 tons, the total phosphorus by 5 tons, the total nitrogen by 42 tons, and the algal density by 2.45 million cells /L. If the water transfer rate of Meiliang Lake pumping station is 60 m3/s and that of Dashihe Pump station is 30 m3/s, the permanganate index of Meiliang Lake can be reduced by 440 tons, total phosphorus by 16 tons and total nitrogen by 119 tons, and the algae density can be reduced by 4.28 million cells /L. The water transfer increased the water flow speed of Meilang Lake, increased the self-purification capacity of the lake body, greatly reduced the water pollutants in Wuxi Taihu Lake key water source protection area and sightseeing area, and reduced the density of algae.Abstract: In order to strengthen the scientific and technological research work of cyanobacteria control in Taihu Lake, the "Taihu (Meiliang Lake) water transfer on the control of cyanobacteria, improve lake water quality" project declared by Wuxi Hydraulic Society was approved by the municipal Association for Science and Technology. By further studying the ...Learn More
Abstract: Research and development of water purification technology can effectively alleviate the impact of water shortage. Capacitive deionization technology (CDI) is a novel water treatment technology, by applying low voltage, ions in solution are absorbed by electrodes to form double electric layers to remove pollutants in water. Electrode material is the main factor affecting the effect of CDI treatment. At present, the traditional CDI electrodes mainly focus on the research of carbon materials and carbon-based composites materials. However, their low effective specific surface area, complex preparation process and high resistance limit their application in practical wastewater treatment. Mixed metal oxides have become a new hotspot in the research and application of CDI electrode materials due to their excellent electrochemical properties, such as high reactivity, large specific capacitance and strong conductivity. However, there are few articles on its research and application in CDI. Therefore, this paper reviews the latest research progress, existing problems and application development of mixed metal oxide electrodes and their composite electrodes in the context of the types of polymetallic oxides.Abstract: Research and development of water purification technology can effectively alleviate the impact of water shortage. Capacitive deionization technology (CDI) is a novel water treatment technology, by applying low voltage, ions in solution are absorbed by electrodes to form double electric layers to remove pollutants in water. Electrode material is the...Learn More
Abstract: The study of CO2 absorbers is of great importance to the efficiency of CO2 capture and the improvement of global climate change. In order to understand the recent hot spots and research directions of CO2 capture absorbers and to analyze the future development of CO2 capture absorbers, we have used vosviewer software to analyze the future development of CO2 capture absorbers. By using vosviewer software, we analyse the relevant literature from 2008 to 2022, analyse the hotspots of CO2 capture sorbent research through keyword co-occurrence, and propose corresponding strategies to achieve carbon neutrality, in order to provide a reference for achieving the goal of maximising the efficiency of CO2 capture sorbents. The research analysis shows that China, the US and Korea have strong comprehensive strength and international influence in CO2 capture absorber research, and ionic liquids, solubility, amines, gasoline and CO2 capture are the hot research directions in this field, which provide a better basis for achieving "carbon neutrality" and "carbon peaking". This has provided a better basis for the realization of "carbon neutral" and "carbon peaking". At the same time, the research of CO2 capture absorbers also has a broad research development space.Abstract: The study of CO2 absorbers is of great importance to the efficiency of CO2 capture and the improvement of global climate change. In order to understand the recent hot spots and research directions of CO2 capture absorbers and to analyze the future development of CO2 capture absorbers, we have used vosviewer software to analyze the future developmen...Learn More
Abstract: In this paper, the principles and characteristics of the preparation of porous oxides by coprecipitation method, sol-gel method, impregnation method and hydrothermal synthesis method were briefly introduced, As a material with special structure composed of different channels, porous materials have the characteristics of large specific surface area, high strength, porosity and adjustable pore size that ordinary materials do not have. Using different preparation methods, porous metal oxides with different morphologies or different channel structures can be obtained. Such oxides have a leading position in the field of catalysis and adsorption with excellent chemical stability and thermal stability, Therefore, it is of great significance to study its preparation methods. The principle and characteristics of soft template method and hard template method for preparing porous oxide are compared in detail. Taking the common soft and hard template as an example, the application of oxide prepared by template method in various fields is summarized. The characteristics of plant template method and the application of porous oxides prepared with plants as templates in adsorption and catalysis in recent years were summarized, and the research direction of porous oxides prepared by this method was prospected.Abstract: In this paper, the principles and characteristics of the preparation of porous oxides by coprecipitation method, sol-gel method, impregnation method and hydrothermal synthesis method were briefly introduced, As a material with special structure composed of different channels, porous materials have the characteristics of large specific surface area,...Learn More
Abstract: The composition and concentration of Volatile Organic Compounds (VOCs) in the atmosphere can reflect the quality of the air, and the environmental quality changes with the quantity of these compounds. When unknown VOCs are encountered, researchers usually use gas chromatography-mass spectrometry (GC-MS) to measure and analyze them. This discriminative mode requires data analysts with a certain theoretical and practical foundation, is demanding and labor-intensive, and may also introduce errors due to the numerous steps. In order to solve these problems, we propose a deep learning and mass spectrum based method for the analysis of Vocs components. Using the deep learning technique, first, a high-quality mass spectral library is constructed as a reference library using molecular fingerprint information, and then, the sample data obtained in the GC-MS gas chromatography-mass spectrometer is preprocessed with data to extract mass spectra that can represent the VOCs components; finally, the selected candidate mass spectra are library matched with the reference library to return high matching VOCs components results. The experimental results show that the method can accurately and quickly discriminate the components of VOCs.Abstract: The composition and concentration of Volatile Organic Compounds (VOCs) in the atmosphere can reflect the quality of the air, and the environmental quality changes with the quantity of these compounds. When unknown VOCs are encountered, researchers usually use gas chromatography-mass spectrometry (GC-MS) to measure and analyze them. This discriminat...Learn More
