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| 1 | Preparation and modification of activated carbon for benzene adsorption by steam activation in the presence of KOH显示文摘A series of activated carbons from Taixi anthracite were prepared by steam activation in the presence of KOH and then they were modified by different methods. The regulation of porosity and the modification of surface chemistry were carried out with the aim to improve the benzene adsorption capacity of activated carbon. The influences of KOH and activation process parameters including activation temperature, activation time and steam flow rate on porosity of activated carbon were evaluated, and the effect of modification methods on surface chemistry was investigated. Also, the relationship between benzene adsorption capacity and porosity and surface chemistry was analyzed. Results show that activation temperature is the dominant factor in the activation process; the introduction of KOH into the raw material can enhance the reactivity of char in activation process, meanwhile it shows a negative effect on the porosity development, especially on the mesopore development. Results of FTIR analysis indicate that anthracite-based activated carbon with condensed aromatics and chemically inert oxygen does not present the nature to be surface modified. Besides, benzene adsorption capacity has an approximate linear relationship with surface area and in our preparation, benzene adsorption capacity and surface area of activated carbon are up to 1210 m 2 /g and 423 mg/g, respectively. | Yao Xin Liu Jinchang Gong Guozhuo Jiang Yu Xie Qiang | 2013 | International Journal of Mining Science and Technology2013，23，3： | 10 |
| 2 | Preparation of Coal-based Activated Carbon and Its Application for Methylene Blue Removal显示文摘 | Gong Guozhuo Xie Qiang Yang Wenfang | 2013 | Applied Mechanics and Materials2013，，： | 1 |
| 3 | Preparation of a new sorbent with hydrated lime and blast furnace slag for phosphorus removal from aqueous solution显示文摘 | Guozhuo Gong Shufeng Ye Yajun Tian Qi Wang Jiandi Ni Yunfa Chen | 2008 | Journal of Hazardous Materials2008，，2： | 1 |
| 4 | Fabrication of a High-Performance and Reusable Planar Face Mask in Response to the COVID-19 Pandemic显示文摘The coronavirus disease 2019(COVID-19)pandemic has caused a surge in demand for face masks,with the massive consumption of masks leading to an increase in resource-related and environmental con-cerns.In this work,we fabricated meltblown polypropylene(mb-PP)-based high-performance planar face masks and investigated the effects of six commonly used disinfection methods and various mask-wearing periods on the reusability of these masks.The results show that,after three cycles of treatment using hot water at 70℃ for 30 min,which is one of the most scalable,user-friendly methods for viral disinfection,the particle filtration efficiency(PFE)of the mask remained almost unchanged.After mask wearing for 24 h and subsequent disinfection using the same treatment procedures,the PFE decreased to 91.3%;the average number of bacterial and fungal colonies was assessed to be 9.2 and 51.6 colony-forming units per gram(CFU∙g^(-1)),respectively;and coliform and pyogenic bacteria were not detected.Both the PFE and the microbial indicators are well above the standard for reusable masks after disinfection.Schlieren pho-tography was then used to assess the capabilities of used and disinfected masks during use;it showed that the masks exhibit a high performance in suppressing the spread of breathed air. | Shui Hu Hongchi Tian Shijia Zhang Dan Wang Guozhuo Gong Weihua Yue Keyang Liu Song Hong Rui Wang Qingqing Yuan Yonglai Lu Dong Wang Liqun Zhang Jianfeng Chen | 2022 | Engineering2022，8，2： | 0 |
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