Pyrolysis utilizes biomass to produce a liquid product bio-oil which is widely used as a potential energy source and a low-cost feedstock for chemical *** efforts have been made to convert biomass to bio-oil since the...
详细信息
Pyrolysis utilizes biomass to produce a liquid product bio-oil which is widely used as a potential energy source and a low-cost feedstock for chemical *** efforts have been made to convert biomass to bio-oil since the oil crisis in *** review focuses on the recent developments in catalysts used in pyrlysis of biomass for bio-oil *** this review,5 types of catalysts such as metal oxide,molecular sieve,mineral,transition metal and others,have been *** sieves,such as HZSM-5,ZSM-5,MCM-41,SBA-15,HUSY,REY and their modified catalysts are most widely used in biomass catalytic pyrolysis *** effects of catalysts on bio-oil yields,quality,composition,stability *** also *** catalysts in pyrolysis of biomass produce markedly influences on bio-oil products,the variety of catalyst types and properties make generalizations difficult to define,in regard to trying to critically analyze the literature.
根据2006年和2009年对五里湖渔业资源和生态环境调查数据,利用Ecopath with Ecosim软件,构建这两个时期五里湖生态系统能量通道模型,比较分析了实施净水渔业前后生态系统的结构和能量流动特征。模型包括大型、其他食鱼性鱼类、湖鲚、鲤...
详细信息
根据2006年和2009年对五里湖渔业资源和生态环境调查数据,利用Ecopath with Ecosim软件,构建这两个时期五里湖生态系统能量通道模型,比较分析了实施净水渔业前后生态系统的结构和能量流动特征。模型包括大型、其他食鱼性鱼类、湖鲚、鲤、鲫、野杂鱼、鲢、草食性鱼类、大型虾蟹类、软体动物、其他底栖动物、浮游动物、沉水植物、其他维管植物、浮游植物、碎屑等17个功能组,基本覆盖了能量流动的途径。营养网络分析表明,增殖放养滤食性鱼类和贝类,扩大了五里湖生态系统的规模,增加了生态系统的发育程度和生态系统营养级ⅠⅡ的能量转换效率,滤食性生物与生态系统其他功能组生态位的重叠程度也有所增加。该系统各功能组间的联系加强且系统趋向稳定,但生态系统的物质流转速度和物质再循环的比例有所降低。
Graphene with a Brunauer similar to Emmett-Teller (BET) specific surface area of 264 m(2) g(-1) has been used as anodic catalyst of microbial fuel cells (MFCs) based on Escherichia coli (ATCC 25922). The electrochemic...
详细信息
Graphene with a Brunauer similar to Emmett-Teller (BET) specific surface area of 264 m(2) g(-1) has been used as anodic catalyst of microbial fuel cells (MFCs) based on Escherichia coli (ATCC 25922). The electrochemical activities of plain stainless steel mesh (SSM), polytetrafluoroethylene (PTFE) modified SSM (PMS) and graphene modified SSM (GMS) have been investigated by cyclic voltammetry (CV), discharge experiment and polarization curve measurement. The GMS shows better electrochemical performance than those of SSM and PMS. The MFC equipped with GMS anode delivers a maximum power density of 2668 mW m(-2), which is 18 times larger than that obtained from the MFC with the SSM anode and is 17 times larger than that obtained from the MFC with the PMS anode. Scanning electron microscopy (SEM) results indicate that the increase in power generation could be attributed to the high surface area of anode and an increase in the number of bacteria attached to anode. (C) 2011 Elsevier B.V. All rights reserved.
Pyrolysis utilizes biomass to produce a liquid product bio-oil which is widely used as a potential energy source and a low-cost feedstock for chemical production. Considerable efforts have been made to convert biomass...
详细信息
暂无评论