Article
Chemistry, Physical
Chunxia Pang, Haijun Wang, Xiaoyan Lin
Summary: By optimizing the preparation conditions of the electret fiber membrane, the EC/PS composite membrane showed low fiber diameter and high porosity, with the best performance achieved at EC/PS mass ratio of 2.5/1 and spinning time of 10 minutes. The composite electret membrane exhibited a purification efficiency of 100% for PM2.5 within 11 minutes, indicating promising applications in air purification.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Materials Science, Multidisciplinary
Zongwang Huang, Juan Liao, Yi Zhang, Fulai Yuan, Sainan Liu, Jing Ouyang, Huaming Yang
Summary: This study presents a bio-inspired spindle-knot halloysite nanotube microsphere-incorporated nanofiber filter with high PM capture efficiency and low airflow resistance. The spindle-knot construction method is applicable to various materials and allows for large-scale production of the filter cartridges.
SCIENCE CHINA-MATERIALS
(2021)
Article
Environmental Sciences
Younghun Kim, Dongho Shin, Kee-Jung Hong, Gunhee Lee, Sang Bok Kim, Inyong Park, Bangwoo Han, Jungho Hwang
Summary: This study established a theoretical model to estimate the performance of various indoor air quality management methods for controlling indoor PM2.5 concentrations and energy consumption. The model was verified through comparative experiments. The study identified efficient energy-saving PM2.5 management scenarios using different IAQ management methods based on the annual life patterns of residents in South Korea. The results showed that energy consumption could be significantly reduced by applying natural ventilation in certain seasons and mechanical ventilation in others.
Article
Thermodynamics
Ahmed Amine Hachicha, Essam M. Abo-Zahhad, Sahuck Oh, Salah Issa, S. M. A. Rahman
Summary: This work proposes a hybrid filter-equipped solar chimney power plant that can purify outdoor air and generate electricity simultaneously. The study found that placing the air filter closer to the collector inlet gives the best configuration. In a case study in Sharjah, the optimized hybrid system could produce around 28.3 kW of electricity while purifying the outdoor air.
APPLIED THERMAL ENGINEERING
(2023)
Article
Environmental Sciences
Jian Li, Qingyun Sun, Zhongxin Ping, Yihong Gao, Peiyu Chen, Fangzhi Huang
Summary: In this study, a novel air purification filter was synthesized that can efficiently remove both PM2.5 and SO2, while maintaining durability.
Article
Materials Science, Composites
Andong Zhang, Heping Li, Aohua Zhang, Jun Zhou, Youwei Yan
Summary: The PSA/PAN composite nanofibers exhibit excellent thermal stability and high filtration efficiency, with a removal efficiency of over 99.7% for PM2.5, even after exposure to high temperatures.
COMPOSITES COMMUNICATIONS
(2021)
Article
Construction & Building Technology
Ana F. Silva, Guilherme Carrilho da Graca
Summary: This paper presents the development and experimental testing of an innovative low-pressure loss PM2.5 filter channel. The filter uses electrostatic precipitation (ESP) technology to reduce outdoor PM2.5 ingress into the indoor environment while ensuring low airflow resistance required by natural ventilation systems. Experimental results show that the PM2.5 collection efficiency of the device is more than 60%.
BUILDING AND ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Ekta Chaudhary, Franciosalgeo George, Aswathi Saji, Sagnik Dey, Santu Ghosh, Tinku Thomas, Anura. V. Kurpad, Sumit Sharma, Nimish Singh, Shivang Agarwal, Unnati Mehta
Summary: This study showed that increased exposure to PM2.5 is associated with higher prevalence of anemia, acute respiratory infection, and low birth weight among children in India. Nitrate, elemental carbon, and ammonium were found to be more correlated with these health outcomes compared to other PM2.5 species. The study also suggests that using total PM2.5 mass as an indicator of air pollution exposure may underestimate the composite impact of different components of PM2.5.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Chemical
Yankang Deng, Miaomiao Zhu, Tao Lu, Qingwei Fan, Wenjing Ma, Xiaoli Zhang, Long Chen, Huihua Min, Ranhua Xiong, Chaobo Huang
Summary: This study developed a unique granular-convex structure on the surface of fibers through green preparation, providing efficient physical interception and adsorption capabilities for excellent removal of air pollutants with low air resistance. The fiber membrane also exhibited water resistance and mechanical properties, offering a positive strategy for high-performance air filtration.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Jiawei Wang, Lisen Lin, Jingyi Zhang, Junchao Duan, Jing Huang, Xinbiao Guo, Shaowei Wu, Zhiwei Sun
Summary: This study used a randomized crossover trial protocol to investigate the effects of air pollution on young and healthy college students in China. Metabolomics analysis of plasma samples showed differential levels of metabolites in response to air pollution.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Lijun Yan, Qing Wang, Wenqiang Qu, Tingting Yan, Hongrui Li, Penglu Wang, Dengsong Zhang
Summary: This study successfully regulated the structure of Pt/TiO2 catalyst through reduction-oxidation treatment, forming Pt/TiO2-C catalyst with a special interface, which can efficiently photocatalytically degrade toluene and exhibit stronger oxidation capacity and mineralization rate.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Yiran Lyu, Kipruto Kirwa, Michael Young, Yue Liu, Jie Liu, Shuxin Hao, Runkui Li, Dongqun Xu, Joel D. Kaufman
Summary: Exposure to ambient air pollution is a significant global health risk, and accurately assessing pollutant concentrations is crucial. This study developed a statistical model that uses monitoring data and geographic covariates to estimate PM2.5 concentrations in Beijing. The model is accurate, user-friendly, and has been implemented in a mobile application for exposure estimation.
ATMOSPHERIC ENVIRONMENT
(2022)
Article
Chemistry, Applied
Zhongguo Wang, Xiong-Fei Zhang, Lian Shu, Jianfeng Yao
Summary: In this study, a solar steam evaporator was fabricated by integrating copper sulfide semiconductor into cellulose hydrogel, which shows great potential for addressing water scarcity. The regenerated cellulose hydrogel with low-cost cotton linter and cross-linking agent exhibits mechanical robustness, while the attached CuS crystals efficiently absorb and convert light into heat. With optimized CuS loadings, the evaporator achieves a high evaporation rate of 2.2 kg/m2/h and solar-to-vapor efficiency of 87% under 1 sun irradiation. Furthermore, the hydrogel with CuS loading also demonstrates efficient photocatalytic degradation of organic dyes. This functional hydrogel evaporator holds promise for water treatment and solar-driven applications.
CARBOHYDRATE POLYMERS
(2023)
Article
Materials Science, Textiles
Huiyu Yang, Hongzhen Deng, Lisha Zhai, Bo Deng
Summary: The internal structure and composition of Juncus effuses (JE) plant fiber were analyzed, and the filtration performance of JE filters of varying lengths against different sizes of particles was compared.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Environmental Sciences
Tao Wang, Yu Wang, Nan Cui
Summary: This study investigates the impact of air pollution on traffic violations using data from the Wuhan Traffic Management Bureau. The results show that an increase in PM2.5 concentration leads to an increase in inexperience-related violations and a decrease in overconfidence-related violations. This effect is most significant in PM2.5.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)