Article
Engineering, Environmental
Dora Mentes, Csenge Emese Toth, Gabor Nagy, Gabor Muranszky, Csaba Poliska
Summary: Consumer society generates a large amount of waste, such as tires. The emissions of pollutants from burning tires are influenced by the firebox temperature, but research on this relationship is limited. In this study, the concentrations of flue gases and solid pollutants from burned tires were investigated experimentally, and the relationship between the decomposition of CaCO3 filler and emitted pollutant concentrations was discovered.
Article
Soil Science
Lulu Gao, Chao Zhang, Wenju Yun, Wenjun Ji, Jiani Ma, Huan Wang, Cheng Li, Dehai Zhu
Summary: This study analyzed the effects of crop residue morphology on spectral reflectance and proposed a new Residue Adjust Normalized Difference Residue Index (RANDRI). A CRC prediction model was trained using UAV images and Sentinel-2 MSI data, and a piecewise prediction model was used to map CRC. The results showed that RANDRI model had better accuracy in high-density areas of crop residue.
SOIL & TILLAGE RESEARCH
(2022)
Article
Engineering, Environmental
Yuelin Li, Samuel Eyley, Wim Thielemans, Qiang Yuan, Jiabin Li
Summary: This study found that the calcined deep soil mixing residue (DSMR) has properties of both concrete and cement, making it a potential partial substitute for Portland cement. The calcined DSMR can contribute to the strength development of cement through pozzolanic reactions and the formation of additional hydrates, with negligible side-effect on the strength of the blended cement paste.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Article
Chemistry, Multidisciplinary
Gabor Varhegyi, Liang Wang, Oyvind Skreiberg
Summary: The study adapted an empirical kinetic model for CO2 gasification of biomass chars and tested its applicability through reevaluation of experiments. Two evaluation strategies were explored for analyzing the kinetic parameters and the results were compared based on 12 experiments.
Article
Chemistry, Applied
Junjie He, Lianming Li, Hong Feng, Mingnan Jiang, Jiayu Li, Linlin Guo, Jie Zhang, Pingheng Zhang, Jun Gong, Qunxing Huang
Summary: The structural properties of soot particles released during the pellet combustion of different municipal solid waste were investigated. The results showed that waste component materials strongly influenced the mass and morphology of the soot particles. Plastic waste resulted in higher mass and more compact morphology compared to biomass and kitchen waste. Nanostructural characterization revealed that paper and kitchen waste had the highest graphitization degree in the soot.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Bamidele Sunday Fakinle, Ebenezer Leke Odekanle, Chika Ike-Ojukwu, Omowonuola Olubukola Sonibare, Olayomi Abiodun Falowo, Folawemi Winner Olubiyo, Daniel Olawale Oke, Charity O. Aremu
Summary: This study investigated the emission of polycyclic aromatic hydrocarbon compounds from the combustion of crop residue and assessed its health risks. The results showed the presence of 16 PAH compounds, with Benzo[b]fluoranthene having the highest concentration and emitting the most toxicity. The assessment revealed that the cancer risk from the combustion emissions exceeded the acceptable limit.
Article
Energy & Fuels
Yazhou Nie, Mengsi Deng, Ming Shan, Xudong Yang
Summary: This study focused on the co-combustion of agricultural and forestry residues, analyzing the combustion performance and emissions of mixed fuel pellets made of wood sawdust and peanut shell. The results showed that mixed fuel can improve combustion performance compared to wood sawdust alone, but it also increases nitrogen oxide emissions.
Article
Materials Science, Composites
Ji-Zhao Liang
Summary: This study investigated the properties of polypropylene composites filled with different flame retardants. The results showed that the tensile strength and Young's modulus increased with increasing flame-retardant volume fraction, while the tensile yield strength and elongation at break decreased. Among the composites with the same flame-retardant content, the one loaded with polyolefin elastomer and nanometer calcium carbonate exhibited the highest elongation at break. The addition of flame retardants, especially at low concentrations, increased the fire residue in the pyrolysis zone of the specimens.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2022)
Article
Chemistry, Analytical
I. Ianez-Rodriguez, M. A. Martin-Lara, G. Blazquez, M. Calero
Summary: The study investigated the bio-oil properties and yields during pyrolysis at different temperatures of residues from pepper cultivation in a greenhouse. The results showed that temperature had a moderate impact on the products' yields and bio-oil properties. The highest bio-oil yield was achieved at 600 degrees C, while the highest char yield was reached at 400 degrees C.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Engineering, Environmental
Yingjin Song, Shuyan Meng, Guanyi Chen, Beibei Yan, Yingxiu Zhang, Junyu Tao, Yihang Li, Jinlei Li
Summary: Anaerobic mono- and co-digestion of three feedstocks were studied for methane production, showing that co-digestion can alleviate acidification and improve buffering capacity. Different feedstock mixing ratios may result in synergistic or antagonistic effects.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Review
Environmental Sciences
Jacek Grabowski, Adam Smolinski
Summary: Air pollution is the greatest environmental threat to human health in the European Union. In Poland, coal boiler plants and residential heating fuel combustion are significant sources of air pollution, with further research needed on combustion of waste materials.
ENVIRONMENTAL POLLUTION
(2021)
Article
Energy & Fuels
Blazej Gaze, Paulina Wojtko, Bernard Knutel, Przemyslaw Kobel, Kinga Bobrowicz, Przemyslaw Bukowski, Jerzy Chojnacki, Jan Kielar
Summary: This article analyzes the impact of using catalytic additives on emissions from the combustion of wood-based waste. The results show that the use of catalysts significantly reduces CO and NOX emissions. These findings may serve as a basis for encouraging Polish legislation to promote the burning of this waste in furniture plants using catalytic substances.
Article
Chemistry, Physical
Agnieszka Bala-Litwiniak, Dorota Musial, Michal Nabialczyk
Summary: This study investigates the possibility of using waste glycerol as an additive to pine pellets for heating purposes. It is found that the addition of waste glycerol slightly increases the calorific value of the pellets and reduces emissions of combustion products.
Article
Thermodynamics
M. Pilar Orihuela, Lorena Espinoza, Nicolas Ripoll, Ricardo Chacartegui, Mario Toledo
Summary: The study experimentally verified the gasification effect of waste plastic and wood mixtures in a gasification reactor, and the results showed that higher syngas production and energy return on investment could be achieved. Meanwhile, the study also analyzed the gasification conditions affecting the reaction pathways and process development, providing valuable insights for continuous-mode gasification of solid waste.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Energy & Fuels
T. Sanusi, J. Sumner, N. J. Simms
Summary: This study compares the fireside corrosion of waste wood fuels and herbaceous grass biomass fuels in combustion power plants. It finds that the corrosion rates are influenced by vapor condensation fluxes and the deposit chemistries generated by different fuel categories.
Article
Environmental Sciences
Jingchuan Chen, Zhijun Wu, Xiangxinyue Meng, Cuiqi Zhang, Jie Chen, Yanting Qiu, Li Chen, Xin Fang, Yuanyuan Wang, Yinxiao Zhang, Shiyi Chen, Jian Gao, Weijun Li, Min Hu
Summary: This study investigated the ice nucleation properties of Asian dust and found that anthropogenic pollution does not significantly change the ice nucleation activity (INA) of Asian dust.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Physics, Condensed Matter
Ran Liu, Dongxue Wang, Dan Xu, Bo Jin, Miao Liu, Ran Liu, Yuanyuan Wang, Yi Li, Shuang Liu, Zhen Yao, Shifeng Niu, Peng Wang
Summary: By using first-principles calculations, we propose four polymeric structures of Ag-N system under high pressure, which enriches the Ag-N system. The P-1-AgN2 and P2(1)/c-AgN2 not only break the current record in the polymeric configuration of MN2 compounds, but also in energy density. The highly polymerized structures, including infinite armchair-antiarmchair chains and layered polymers, can be formed in nitrides with low nitrogen content, revealing the mechanism of structure evolution under pressure.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Physics, Condensed Matter
Fengping Li, Yuanyuan Wang, Yan Liang, Ying Dai, Baibiao Huang, Wei Wei
Summary: In this study, we demonstrate the direct formation of interlayer excitons in van der Waals structures composed of two-dimensional transition metal dichalcogenides. The large interlayer polarization leads to an interlayer exciton with a sizable oscillator strength, located at a lower energy than the characteristic intralayer excitons, with significantly reduced exciton binding energy and improved exciton lifetime.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Environmental Sciences
Minggao Liang, Laifu Zhang, Sensen Wu, Yilin Zhu, Zhen Dai, Yuanyuan Wang, Jin Qi, Yijun Chen, Zhenhong Du
Summary: This study developed a high-resolution surface temperature downscaling method based on geographically neural network weighted regression (GNNWR) by integrating normalized difference vegetation index (NDVI), normalized difference building index (NDBI), digital elevation model (DEM), and slope data. The results showed that the proposed GNNWR model achieved superior downscaling accuracy compared to widely used methods in four test areas with large differences in topography, landforms, and seasons. The GNNWR method also provided the best extracted and most detailed spatial textures.
Article
Environmental Sciences
Yipeng Wang, Hongyi Cheng, Naiang Wang, Chufang Huang, Kaili Zhang, Bin Qiao, Yuanyuan Wang, Penghui Wen
Summary: This study used InVEST and CASA models to evaluate the spatial distribution and correlations of nine ecosystem services in the Qilian Mountains. The results showed that most of the services increased in the study area, with water resource supply, soil conservation, and entertainment tourism being the high-value areas. Trade-offs were found between food supply and water purification, and habitat quality showed trade-offs with water resource supply, water conservation, and soil conservation.
Article
Meteorology & Atmospheric Sciences
Yuzhe Liu, Di Wu, Jinrun Yi, Xiu Chen, Yuankai Shao, Anlin Liu, Jianmin Chen, Qing Li
Summary: This comprehensive study found that mobile sources and residential solid fuel burning are sensitive sources of potential secondary pollutants and potential inhalation health risks, respectively. Despite accounting for only 22.7% of the total mass, residential VOCs contribute significantly to both inhalation non-cancer risk (57.4%) and cancer risk (47.3%). Therefore, more attention should be paid to the formation of secondary pollutants from mobile sources, while policy priority should be given to reducing health risks from residential solid fuel burning.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Meteorology & Atmospheric Sciences
Xinxin Feng, Yingjun Chen, Zeyu Liu, Yanli Feng, Huiyun Du, Yujing Mu, Jianmin Chen
Summary: In this study, sulfate (SO42-) samples from three haze events were analyzed for sulfur isotope signals. The results showed that after considering coal combustion and atmospheric oxidation, the source apportionment results of SO42- were highly consistent with those obtained from the Positive Matrix Factorization model. The sulfur isotope analysis, especially for the contribution of secondary SO42-, provided more accurate results by considering the fractionation from coal combustion. Therefore, sulfur isotopes were considered as a more sensitive pollution indicator than SO2 concentration, providing more reliable evidence for SO2 emission control.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Environmental Sciences
Jin Qi, Zhenhong Du, Sensen Wu, Yijun Chen, Yuanyuan Wang
Summary: This study developed a spatiotemporally weighted intelligent method to explore the coastal dissolved silicate (DSi) changes in a higher spatiotemporal resolution. Through satellite observations and models, the study obtained complete surface DSi concentrations at high resolutions in the coastal sea of Zhejiang Province, China, revealing the influences of rivers, ocean currents, and biological effects on DSi distributions. The study also found important fluctuations in DSi concentrations during diatom bloom processes and highlighted the significant influence of terrestrial input on DSi levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Ruoyu Zhang, Xiaohui Lu, Lin Wang, Jianmin Chen, Da-Ren Chen, Xiaofei Wang
Summary: Reducing aerosol transmission is effective in preventing the spread of respiratory diseases like COVID-19, but many people prefer not to wear masks due to discomfort. In this study, it is found that over 95% of respiratory aerosols are electrically charged. Based on this finding, a low-cost respiratory aerosol capturer is designed to remove these charged aerosols efficiently, which outperforms existing air purifiers and costs less than 10% of them. This tool offers a great solution for combating respiratory diseases and has the potential to save many lives, especially for low-income individuals.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2023)
Article
Meteorology & Atmospheric Sciences
Tao Wang, Yangyang Liu, Shengqian Zhou, Guochen Wang, Xiansheng Liu, Longqian Wang, Hongbo Fu, Jianmin Chen, Liwu Zhang
Summary: This study develops a kinetic model based on field observation data in Beijing to explore the key factors for multiphase sulfate formation. The study reveals that interfacial oxidants and transition metal ions play important roles in sulfate formation, and temperature, acidity, and particle radius also have effects on multiphase chemistry.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Microbiology
Changliang Nie, Xueyun Geng, Runqi Zhang, Lina Wang, Ling Li, Jianmin Chen
Summary: This study investigated the presence of cyanobacteria on the pre-filter of HVAC systems and found that the concentrations were highest in autumn and significantly higher compared to winter and summer. The airborne transportation of aquatic and terrestrial cyanobacteria contributed to their presence on the pre-filter. The dominant cyanobacteria families identified were Chroococcidiopsaceae, norank_cyanobacteriales, Nostocaceae, and Paraspirulinaceae. Some detected genera, such as Nodularia sp., Pseudanabaena sp., and Leptolyngbya sp., potentially produced cyanobacterial toxins that could pose a threat to human health. This study provides new insights into the distribution of cyanobacteria outside of aquatic habitats.
Article
Environmental Sciences
Jianyan Lu, Sunling Gong, Jian Zhang, Jianmin Chen, Lei Zhang, Chunhong Zhou
Summary: A regional online chemical weather model, WRF/CUACE, is used to investigate the impact of cloud chemistry on SO2 and sulfate levels in typical regions of China. The cloud chemistry scheme is found to accurately reproduce observed cloud consumption and sulfate production. During a heavy pollution episode, cloud chemistry leads to a significant reduction in SO2 and an increase in sulfate. The Sichuan Basin is the most affected region, followed by the Yangtze River Delta and the southeast of the North China Plain.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Jinlong Ma, Shengqiang Zhu, Siyu Wang, Peng Wang, Jianmin Chen, Hongliang Zhang
Summary: The greening impacts in China from 2000 to 2017 increased vegetated areas and BVOC emissions. Accurate estimation of BVOC emissions is critical to understand their impacts on air quality. Different leaf area index (LAI) and land cover (LC) datasets were used to investigate the impact on BVOC emissions, and the effects on O-3 and SOA were evaluated. Results show that changing LAI and LC datasets of the model input has an impact on BVOC estimations, with the combination of C3S LC and GLASS LAI performing better. The uncertainties in MEGAN inputs should be fully considered in future O-3 and SOA simulations.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Yu Han, Tao Wang, Rui Li, Hongbo Fu, Yusen Duan, Song Gao, Liwu Zhang, Jianmin Chen
Summary: In order to identify the spatiotemporal variations, sources and ozone (O-3) and secondary organic aerosol (SOA) formation potentials of the atmospheric VOCs, a concurrent multi-site observation campaign was performed in Shanghai, China in 2019. The results showed that different land-use types had an impact on the average VOC concentrations, with industrial areas having the highest concentrations.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Engineering, Environmental
Xinxin Feng, Yingjun Chen, Shaofeng Chen, Yu Peng, Zeyu Liu, Minjun Jiang, Yanli Feng, Lina Wang, Li Li, Jianmin Chen
Summary: This study introduces high-time resolution Delta O-17-NO3- as a powerful tool to quantify NO3- formation during severe haze, revealing the contributions of NO2 + OH and NO3 + HC. The results show that the NO3- pathway differs with temperatures, NOx oxidation rate, and pollution levels.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
