Article
Engineering, Chemical
Siti Zubaidah Sulaiman, Nur Aqidah Muhammad Harinder Khan, Izirwan Izhab, Shalyda Md. Shaarani, Siti Kholijah Abdul Mudalip, Rohaida Che Man, Zatul Iffah Mohd Arshad, Rafiziana Md. Kasmani, Sarina Sulaiman
Summary: This study investigated the characteristics of biogas explosions and their severity, finding that the severity of the explosion increases with higher biogas concentration but decreases with higher CO(2) concentration. The experimental data can help engineers design prevention and mitigation measures for biogas explosions, which are classified as catastrophic events.
CHEMICAL ENGINEERING COMMUNICATIONS
(2021)
Article
Energy & Fuels
Yun Ge, Hong-Hao Ma, Jia-Wei Liu, Yuan Zeng, Jun Pan, Lu-Qing Wang
Summary: In this experiment, the explosion characteristics of hydrogen-propane-nitrous oxide mixtures were studied. The effects of equivalence ratio, propane fraction, and initial pressure on the explosion were analyzed. The results showed that propane addition could decelerate the explosion process, and higher initial pressure resulted in higher maximum explosion pressure. The presence of nitrous oxide significantly affected the stability of the explosion, and a small amount of propane could alter the explosion characteristics of the mixture.
Article
Energy & Fuels
Shucheng Guo, Feng Wu, He Wang, Xuhai Pan, Xiaowei Zang, Min Hua, Juncheng Jiang
Summary: This study investigates the characteristics of ethyl ether spray explosion at different concentrations, material temperatures, and ambient temperatures using a spray explosion experiment system. The results show that ambient temperature has a greater impact on the explosion characteristics of ethyl ether spray, while material temperature has a certain inhibitory effect.
Article
Energy & Fuels
Huizhen Li, Huahua Xiao
Summary: This paper presents an experimental study of the explosion characteristics of NH3/DME blends. The results show that the peak explosion pressure, maximum pressure rise rate, and deflagration index vary nonmonotonically with the equivalence ratio, and reach peak values at certain ratios. DME addition has a positive effect on explosion intensity.
Article
Engineering, Chemical
Francis Oppong, Luo Zhongyang, Xiaolu Li, Cangsu Xu
Summary: The study investigated the confined explosion characteristics of ethyl acetate in a constant volume explosion vessel. It was found that the peak explosion pressure and the maximum pressure rise rate increased with higher initial pressure and lower initial temperature. Additionally, the explosion time decreased with decreasing initial pressure. The experimental and theoretical deflagration index of ethyl acetate were compared, showing different levels of hazard potential.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2021)
Article
Engineering, Chemical
Shuangming Wei, Minggao Yu, Rizhong Bao, Bei Pei, Shuo Chen
Summary: The study investigated the explosion characteristics of syngas/air mixtures at sub-atmospheric pressures with different equivalence ratios and fuel compositions, indicating the sensitivity of explosion parameters to initial pressure depends on equivalence ratios and fuel compositions.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2022)
Review
Energy & Fuels
Maria Mitu, Codina Movileanu, Venera Giurcan
Summary: This study presents data on the characteristic parameters of explosion propagation in gaseous ethane-air mixtures and analyzes their relationships with initial pressure, initial temperature, equivalence ratio, and explosion vessel characteristics. Ethane is widely used in various industries and applications, making it important to understand its explosion characteristics for safety and performance prediction purposes.
Article
Engineering, Environmental
Guochun Li, Chuanyu Pan, Yangpeng Liu, Xiaolong Zhu, Xiaomin Ni, Xiangdi Zhao, Guoxin Chen, Xishi Wang
Summary: The characteristics of water mist spray and the installation locations of the nozzles have significant effects on explosion mitigation, and K2CO3 additive can enhance the explosion mitigation effect of water mist, but its effect is weaker compared to changes in water mist characteristics.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Energy & Fuels
Yong Yang, Zhenmin Luo, Xuhan Ding, Fan Zhang, Chuanxu Luo, Hongren Zhang, Chi-Min Shu
Summary: This study investigated the explosion hazards of oil-immersed coal dust in co-existing mine areas through experimental research. The results show that the maximum explosion pressure of oil-immersed coal dust first decreases and then increases as the coal dust particle size increases. For samples with oil-immersed concentrations between 2% and 10%, the explosion characteristic parameters were higher than those of the raw coal counterpart. The influence mechanism of coal dust concentration on maximum explosion pressure is that the number of coal dust particles affects the distance between particles and heat transfer efficiency, while the influence mechanism of particle size is that it affects the diffusion of oxygen in particles and the rate of combustible volatiles released by particles.
Article
Energy & Fuels
Baiwei Lei, Qinan Wei, Renhua Pang, Jianjun Xiao, Mike Kuznetsov, Thomas Jordan
Summary: This study established a four-step combustion-mechanism model for methane/hydrogen mixtures using the CFD code GASFLOW-MPI. The deflagration characteristics of a premixed combustible gas in a 20-L spherical device were numerically simulated. The results showed that the methane/hydrogen deflagration process could be effectively simulated by considering the heat losses, and an increase in hydrogen addition led to an increase in laminar burning velocity, a decrease in deflagration duration, and an increase in maximum deflagration pressure.
Article
Engineering, Chemical
Yi Liu, Yuxiao Li, Dongfeng Zhao, Hanhai Dong
Summary: This paper studied the explosion characteristics of refrigerant R1234yf at different concentrations and initial pressures, finding that the peak overpressure and maximum rate of pressure rise of R1234yf were affected by the refrigerant concentration and pressure. Compared to other refrigerants, R1234yf exhibited superior safety performance at the same flammability classification.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2021)
Article
Engineering, Chemical
Lijuan Huang, Yu Wang, Liang Zhang, Yuliang Su, Zhe Zhang, Shaoran Ren
Summary: This study comprehensively investigated the pressure influence on the flammability limits and explosion pressure of ethane and propane, revealing a logarithmic relationship between pressure and flammability limits, with propane having the highest explosion pressure. The explosion pressure showed an approximate linear relationship with initial pressure, highlighting the importance of combustion heat in the pressure dependence of the lower flammability limit.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2022)
Article
Chemistry, Multidisciplinary
Yu-Jung Choi, Jae-Wook Choi
Summary: This study measured various values related to the explosion of propylene and nitrogen at 25 degrees Celsius. The results showed that the lower explosion limit did not significantly change with pressure increase, but the upper explosion limit did. Additionally, the presence of nitrogen decreased the explosion risk of propylene while also affecting other explosion-related parameters.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Zhongkun Yang, Kun Zhao, Xianzhao Song, Bin Li, Dan Zhang, Lifeng Xie
Summary: The study found that propane and MAAs can effectively suppress hydrogen-air explosions, but have multiple effects on propane-hydrogen explosions. When the hydrogen content exceeds 72.26%, the dominant effect of MAAs shifts abruptly towards promoting explosions, and increasing filling density has a beneficial impact on explosion suppression.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Jan Skrinsky, Tadeas Ochodek, Jan Veres, Jakub Cespiva
Summary: Knowledge of explosion characteristics is crucial for preventing and mitigating unwanted explosions. However, existing explosion data may not always be applicable to specific applications, especially at low temperatures. In this study, methane/air deflagrations were investigated in the millisecond time domain, focusing on the differences between atmospheric and low initial temperature measurements. Experimental analysis of methane/air mixtures revealed the effects of temperature on the maximum rate of pressure rise and deflagration index, providing valuable insights for handling and storing fuels.
Article
Materials Science, Multidisciplinary
Maria Mitu, Sabine Zakel, Elisabeth Brandes, Werner Hirsch
Summary: While ignition temperatures of many flammable substances in air and pure oxygen are well known, there is a lack of data on ignition temperatures in nitrous oxide, despite its widespread use as an oxidizer. Recent experiments have shown that ignition temperatures in oxidizer mixtures containing nitrous oxide increase with higher nitrous oxide concentrations.
FIRE AND MATERIALS
(2022)
Article
Thermodynamics
V Giurcan, M. Mitu, C. Movileanu, D. Razus, D. Oancea
Summary: The laminar burning velocities of a stoichiometric CH4-N2O mixture diluted with N-2 at various initial pressures and temperatures were numerically modeled. The study investigated the influence of initial conditions on burning velocities and flame characteristics.
COMBUSTION EXPLOSION AND SHOCK WAVES
(2022)
Article
Engineering, Chemical
Domnina Razus, Venera Giurcan, Codina Movileanu, Maria Mitu
Summary: A computational study was conducted to investigate the effect of adding nitrogen to hydrogen-nitrous oxide flames at different initial pressures and temperatures. The results showed that increasing the initial pressure and temperature led to higher mass fractions of NO and flame temperature.
Article
Energy & Fuels
Maria Mitu, Codina Movileanu, Venera Giurcan
Summary: This study evaluates the performance of the constant-volume method through experiments conducted in three different closed vessels. Accurate laminar burning velocities obtained from these experiments can be used in the development of computational fluid dynamics models to improve the design and efficiency of internal combustion engines. The experimental results were compared with data from different chemical kinetic mechanisms and literature, showing good agreement. The obtained pressure coefficients and overall reaction orders fall within the reference range of methane-air mixtures at ambient initial temperature.
Review
Energy & Fuels
Maria Mitu, Codina Movileanu, Venera Giurcan
Summary: This study presents data on the characteristic parameters of explosion propagation in gaseous ethane-air mixtures and analyzes their relationships with initial pressure, initial temperature, equivalence ratio, and explosion vessel characteristics. Ethane is widely used in various industries and applications, making it important to understand its explosion characteristics for safety and performance prediction purposes.
Article
Engineering, Chemical
Venera Giurcan, Domnina Razus, Maria Mitu, Codina Movileanu
Summary: The study investigates the explosion parameters of ethylene-nitrous oxide mixtures under different initial pressures and compositions. It is found that ethylene-N2O-N-2 mixtures develop higher explosion pressures and rates of pressure rise compared to ethylene-air mixtures under the same C/O ratio.
Article
Energy & Fuels
Domnina Razus, Codina Movileanu, Maria Mitu, Venera Giurcan
Summary: The propagation speeds of premixed n-butane-air mixtures were investigated under various initial conditions. Experimental measurements and kinetic modeling were conducted to obtain the propagation speeds. The study analyzed the obtained speeds based on both experimental and computed velocities, and discussed the dependence of the propagation speed on the initial pressure and temperature.
Article
Engineering, Chemical
Maria Mitu, Thomas Stolz, Sabine Zakel
Summary: The Maximum Experimental Safe Gap (MESG) is a significant criterion for evaluating the spread of flames through small gaps. It is used to classify flammable gases and vapors in explosion groups, which is essential for explosion protection. This study investigates the impact of inert gas addition on MESG to assess the effectiveness of inertization in explosion protection.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2023)
Article
Engineering, Chemical
Maria Mitu, Domnina Razus, Dorin Boldor, Cosmin Marculescu
Summary: Willow wood is a promising biomass for pyrolysis due to its fast growth, renewability, and high energy density. The pyrolysis of willow wood produced a multi-fuel gaseous mixture with a specific composition. Numerical simulations were conducted to investigate the combustion characteristics of these multi-fuel mixtures with air, providing important parameters for further analysis. The determination of overall activation parameters of multifuel oxidation with air was achieved by correlating the obtained parameters with initial pressure and temperature.
Review
Energy & Fuels
Codina Movileanu, Maria Mitu, Venera Giurcan
Summary: This paper summarizes the recent research on laminar burning velocities of hydrogen-enriched n-butane-air mixtures. The findings suggest that hydrogen addition can increase the laminar burning velocity and flame temperature, and improve flame stability. These results are useful for the optimization of combustion processes, particularly in internal combustion engines and gas turbines.
Article
Engineering, Environmental
Shun-Shun Chen, Xu-Xiu Chen, Tian-Yu Yang, Li Chen, Zheng Guo, Xing-Jiu Huang
Summary: A temperature-modulated sensing strategy was proposed to identify and determine BTEX compounds. Highly effective identification of BTEX was achieved using linear discrimination and convolutional neural network analyses. Additionally, quantitative analysis of concentration was accomplished by establishing the relationship between concentration and response.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Myungkyung Noh, Jeong Yeon Sim, Jisung Kim, Jee Hwan Ahn, Hye-Young Min, Jong-Uk Lee, Jong-Sook Park, Ji Yun Jeong, Jae Young Lee, Shin Yup Lee, Hyo-Jong Lee, Choon-Sik Park, Ho-Young Lee
Summary: This study reveals that chronic exposure to PM induces chronic inflammation and development of COPD by dysregulating NAD+ metabolism and subsequent SIRT1 deficiency in pulmonary macrophages. Activation of SIRT1 by resveratrol effectively mitigates PM-induced inflammation and COPD development. Targeting metabolic and epigenetic reprogramming in macrophages induced by PM is a promising strategy for COPD treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yu Liu, Linlin Qin, Yiming Qin, Tong Yang, Haoran Lu, Yulong Liu, Qiqi Zhang, Wenyan Liang
Summary: Co/NC/PAC electrode was prepared by compounding ZIF-67 with powder-activated carbon for the electrocatalytic treatment of nitrogen-containing heterocyclic compounds. The degradation efficiency of the four compounds reached 90.2-93.7% under optimal conditions, and the degradation order was pyridazine < pyrimidine < pyrazine < pyridine.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Julien Couturier, Pierre Tamba Oulare, Blanche Collin, Claire Lallemand, Isabelle Kieffer, Julien Longerey, Perrine Chaurand, Jerome Rose, Daniel Borschneck, Bernard Angeletti, Steven Criquet, Renaud Podor, Hamed Pourkhorsandi, Guilhem Arrachart, Clement Levard
Summary: This study analyzes the properties of bauxite residue samples and explores the influence of bauxite ore origin, storage conditions, and storage time. The results show that the speciation of yttrium is related to the origin of bauxite ore, while no significant variation was observed with storage conditions or aging of the residues.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Sakthinarenderan Saikumar, Ravi Mani, Mirunalini Ganesan, Inbakandan Dhinakarasamy, Thavamani Palanisami, Dharani Gopal
Summary: Microplastic contamination in marine ecosystems poses a growing concern due to its trophic transfer and negative effects on marine organisms. This study investigates the transfer and impacts of polystyrene microplastics in an estuarine food chain. The results show that microplastics can be transferred through the food chain, although the transfer rates are low. The exposed organisms exhibit stress responses, suggesting the potential risk of microplastics reaching humans through the food chain.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Review
Engineering, Environmental
Yan-Jiao Li, Ying Yuan, Wen-Bing Tan, Bei-Dou Xi, Hui Wang, Kun-Long Hui, Jia-Bao Chen, Yi-Fan Zhang, Lian-Feng Wang, Ren-Fei Li
Summary: This review investigated and analyzed the distribution, composition, and abundance of heavy metals and antibiotic resistance genes (ARGs) in landfill. The results showed that heavy metals have lasting effects on ARGs, and complexes of heavy metals and organic matter are common in landfill. This study provides a new basis to better understand the horizontal gene transfer (HGT) of ARGs in landfill.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Jessy Joseph, Ari Vaisanen, Ajay B. Patil, Manu Lahtinen
Summary: Efficient and environmentally friendly porous hybrid adsorbent beads have been developed for the removal of arsenic from drinking water. The structural tuning of the adsorbents has been shown to have a significant impact on their adsorption performance, with high crystallinity leading to increased adsorption capacity and selectivity towards As5+.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yangyang Liu, Minhua Xiao, Kaiqin Huang, Juntao Cui, Hongli Liu, Yingxin Yu, Shengtao Ma, Xihong Liu, Meiqing Lin
Summary: This study measured the levels of phthalate metabolites in breast milk collected from mothers in southern China. The results showed that phthalates are still prevalent in the region, and breastfeeding contributes to phthalate intake in infants. However, the levels detected do not pose significant health risks to infants based on dietary exposure. The increasing exposure to certain phthalates calls for further research into their sources and potential risks.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhiqiang Wu, Jianxing Sun, Liting Xu, Hongbo Zhou, Haina Cheng, Zhu Chen, Yuguang Wang, Jichao Yang
Summary: Ocean depth affects microbial diversity, composition, and co-occurrence patterns of microplastic microbial communities. Deterministic processes dominate the assembly of mesopelagic plastisphere microbial communities, while stochastic processes shape the assembly of bathypelagic microbial communities. The relationships between microorganisms in the mesopelagic layer are more complex and stable, with Proteobacteria and Actinobacteriota playing important roles.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Tingting Xiao, Renjie Chen, Chen Cai, Shijie Yuan, Xiaohu Dai, Bin Dong, Zuxin Xu
Summary: Based on the efficiency of catalytic ozonation techniques in enhancing sludge dewaterability, this study investigated its effectiveness in simultaneous reduction of antibiotics and antibiotic resistance genes. The results showed that catalytic ozonation conditioning changed the distribution of antibiotics and achieved high degradation rates. It also significantly reduced the abundance of ARGs, inhibited horizontal gene transfer, and decreased the signal transduction of typical ARGs host bacteria.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yang Deng, Xiaohong Guan
Summary: This article discusses two different development approaches for ferrate(VI) technology in water treatment, arguing that process integration is a promising method that can drive technological innovation and revolution in water treatment, achieving higher treatment efficiency, reduced costs and energy consumption, and a smaller physical footprint.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhe Zhang, Lu Zhang, Zhihao Huang, Yuxin Xu, Qingqing Zhao, Hongju Wang, Meiqing Shi, Xiangnan Li, Kai Jiang, Dapeng Wu
Summary: In this study, a floating catalytic foam was designed and prepared to enhance the mass transfer in immobilized photocatalysts for wastewater treatment. The floating catalytic foam could float on the water surface and establish a temperature gradient, effectively promoting the diffusion and adsorption of target molecules during the photocatalytic process.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Muhammad Nafees, Adiba Khan Sehrish, Sarah Owdah Alomrani, Linlin Qiu, Aasim Saeed, Shoaib Ahmad, Shafaqat Ali, Hongyan Guo
Summary: The accumulation of cadmium and antibiotics in edible plants and fertile soil is a worldwide problem. This study investigated the potential of zinc oxide nanoparticles to alleviate the toxicity of both cadmium and antibiotics and promote spinach growth.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Lurui Wan, Kai Wang, Yuan Chen, Zhiyong Xu, Wenbo Zhao
Summary: In this study, a low viscosity and high thermal stability SO2 absorbent with dual interacting sites was successfully synthesized. The absorbent showed the highest absorption enthalpy change and entropy change values among reported SO2 absorbents, and exhibited lower viscosity and comparable thermal stability to ILs.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhengwei Zhou, Guojie Ye, Yang Zong, Zhenyu Zhao, Deli Wu
Summary: This study utilized Mo powder and STPP to enhance the performance of the sodium percarbonate system in pollutant degradation. The presence of Mo and STPP resulted in a higher degradation rate of the model pollutant SMX, with low oxidant consumption. The system generated multiple active species through a series of chain reactions at different pH values, exhibiting excellent performance towards electron-rich pollutants. Furthermore, Mo demonstrated excellent stability and reusability.
JOURNAL OF HAZARDOUS MATERIALS
(2024)