共查询到3条相似文献,搜索用时 15 毫秒
1.
Qingrong Qian Motoi Machida Masami Aikawa Hideki Tatsumoto 《Journal of Material Cycles and Waste Management》2008,10(1):53-61
Activated carbons were prepared from cattle manure compost (CMC) by ZnCl2 activation with various ZnCl2/CMC mass ratios. Based on the N2 adsorption-desorption isotherms, mathematical models including the Dubinin-Radushkevich (DR) equation, the αs plot, and the Horvath-Kawazoe method were used to analyze the pore structural characteristics of the prepared activated carbons.
It was found that for carbons possessing both micro-and mesopores, the DR method provided a more accurate estimation than
the αs method for the extent of microporosity. The effect of the ZnCl2 impregnation ratio on the pore structure was discussed using the DR method. The results revealed that pore evolution involved
three distinct regions with increases in the amount of impregnated ZnCl2: raising the ZnCl2/CMC mass ratio from 0.00 to 0.50 resulted in a 19-fold increase in micropore volume (Vme
D) but caused no change in the mesopore volume (Vme
D); increasing the ZnCl2/CMC mass ratio from 0.50 to 1.00 led to an increment in Vmi
D of about 50% and in Vme
D of 170%; while raising the ratio from 1.50 to 2.50 caused a slight decrease in Vmi
D but a 200% increment in the value of Vme
D. 相似文献
2.
Panos G. Georgopoulos 《Water, Air, & Soil Pollution: Focus》2008,8(1):3-21
Advances in computing processing power and in availability of environmental and biological data have allowed the development
and application of comprehensive modeling systems that utilize a holistic, integrated, approach for assessing the interactions
of environmental and biological systems across multiple scales of spatiotemporal extent and biological organization. This
approach allows mechanism-based environmental health risk assessments in a person-oriented framework, which accounts for simultaneous
exposures to contaminants from multiple media, routes, and pathways. The conceptual basis and example applications of the
Modeling ENvironment for TOtal Risk (MENTOR), and the DOse–Response Information ANalysis system (DORIAN) are presented. 相似文献
3.
Cesare Lorenzetti Piero Manaresi Corrado Berti Giancarlo Barbiroli 《Journal of Polymers and the Environment》2006,14(1):89-101
In this paper we present the main technologies developed over the last decades on chemical recycle of PET from a practical
and economical point of view. We show details of plants used to carry out solvolitic reactions emphasising steps of purification,
which are sometimes not considered when discussing chemical, recycle but which, in fact, are the key feasibility factors.
The recycling or modification of PET to obtain monomers and other useful chemicals as intermediates and additives is carefully
considered. 相似文献