In situ Fenton-enhanced cathodic reaction for sustainable increased electricity generation in microbial fuel cells

This study reports that Fenton's reaction is capable of facilitating cathodic reaction and thus increasing the current output in microbial fuel cells (MFCs). The hydroxyl radicals (OH) produced via Fenton's reaction are demonstrated to be vital to the enhancement of electricity generation in MFCs. In a two-chamber MFC employing expanded polytetrafluoroethylene (e-PTFE) laminated cloth as a separator, the power output is enhanced approximately four times with Fenton's reaction. However, the enhancement lasts only a short time period due to the rapid consumption of Fenton's reagents. To overcome this problem, a Fe@Fe₂O₃/carbon felt (CF) composite cathode is made, which results in a greater and, more importantly, sustainable power output. In the composite cathode, Fe@Fe₂O₃ functions as a controllably releasing Fenton iron reagent and CF functions as an air-fed cathode to electro-generate H₂O₂. This newly developed MFC with a Fenton system can ensure a continuous high power output, and also provides a potential solution to the simultaneous electricity generation and degradation of recalcitrant contaminants.     

用于大气污染控制的袋式除尘和非织造滤料

论述了大气污染控制、袋式除尘与非织造滤料的紧密依存关系:袋式除尘是大气污染控制的主要手 段,滤料是袋式除尘器的核心部件,非织造滤料是最有生命力的除尘滤料。介绍了世界非织造滤料生 产技术、产品及市场的发展趋势以及我国除尘滤料的技术进步和尚存差距,展望了我国除尘滤料良好 的发展前景。     

真空应用对压榨脱水和能源消耗的影响

压榨毛毯是造纸机的贵重物品,真空吸水箱的真空脱水和压区脱水决定纸张出压榨部的干度,真空度和压榨压力是能耗的重要指标,最大限度地降低能耗,增加脱水是压榨部的迫切要求。     

Which determines power generation of microbial fuel cell based on carbon anode,surface morphology or oxygen-containing group?

To clarify the role of carbon surface nature in the power generation of microbial fuel cell (MFC) based on carbon anode, three carbon felt samples, obtained by simple water cleaning (CCF), heating (HCF) and oxidation with ammonium persulfate (ACF), were characterized with SEM, BET, FTIR, cyclic voltammetry and acid titration, and their performances as anode of MFC were investigated with polarization curve measurement, chronoamperometry and chronopotentiometry. It is found that the power output of MFC depends on the morphology rather than the oxygen-containing group concentration of the carbon felt surface. CCF, HCF and ACF have their surface oxygen-containing groups of 1.52, 0.8 and 0.45 mM m⁻² and specific surface areas of 0.33, 0.65 and 1.19 m² g⁻¹, but yield their maximal power densities of 606, 858 and 990 mW m⁻², respectively. This study suggests that intensive attention should be paid to the design of surface morphology in order to improve power generation of MFC.     

混纺活性炭纤维针刺毡的生产与预氧化

利用自制的预氧化针刺毡和自制的设备,采用一步法蒸汽碳化活化工艺来生产活性炭纤维针刺毡。影响活性炭纤维针刺毡的产出率和对碘吸附能力的因素主要有4个:活化温度、活化时间、蒸汽流速、升温速率,用正交试验得出了一步法蒸汽碳化活化生产的最佳工艺参数,最后用单因素实验进一步揭示这4因素对实验结果的影响。     

PTFE发泡涂层整理对芳纶针刺毡滤料性能的影响

为获得性能优良的工业过滤材料,将聚四氟乙烯(PTFE)乳液发泡后对芳纶针刺毡进行涂层整理.详细探究发泡涂层前后,芳纶针刺毡面密度、厚度、透气性、力学性能、耐磨性、表面形貌、孔径及过滤性能的变化情况.结果 表明:经PTFE发泡涂层整理后,芳纶针刺毡的面密度和厚度均稍有增加,透气性和纵横向断裂强力无明显下降,耐磨性显著提升...     

毛毡编织技艺与图案研究

毛毡的发明迎合了蒙古人游牧生活方式的特点,体现了蒙古人的审美观念,随着社会生产力的发展,其使用范围也不断扩展。文章介绍了蒙古族毛毡的历史传承及文化底蕴,并对制毡过程及毛毡编织图案做了详细介绍和分析。     

压榨毛毯与造纸机的高效运行

分析压榨毛毯对造纸机运行效率的影响。在生产上,要保证纸机高效运行,应选择合适的压榨毛毯、快捷更换新毛毯、缩短毛毯初期适应期并加强毛毯的维护。     

推荐一种最新汽车内饰板材生产线

介绍一种将四柱压力机予以改造和增补设备而配置成的汽车内饰板材生产线,该生产线经济、实用、高效。     

羊毛蛋白酶防毡缩加工综述

综述了羊毛化学法防毡缩加工中存在的问题,列举了现有不同羊毛蛋白酶防毡缩方法。根据羊毛鳞片层的结构特点,探讨了酯酶(脂肪酶、角质酶)、角蛋白酶、改性蛋白酶和谷酰胺转氨酶组合应用于羊毛生物法防毡缩加工的可行性。详细介绍了酶法预处理与蛋白酶相结合的新型羊毛防毡缩方法。