绿色化学教育的探讨

当今全球十大环境问题几乎每都直接与化学和化学工业污染污染有关，如何减少化学和化学工业所造成的污染是许多环境保护工作者所研究的重要课题，本文介绍了绿色化学的内涵，提出了实施绿色化学理论教育和绿色化学实验教育的具体措施，绿色化学及绿色化学教育对环境保护具有重大而深远的意义。     

上海市轨道交通明珠线声屏障试验研究

上海市轨道交通明珠线在国内首次采用1:1实况模拟形式进行了长度为250m的声屏障试验工程,按不同距离、高度设置13个测点,在各测点上做了8次不同材质结构的声屏障效果测试。实况模拟获得的大量数据资料和结论,对降低轨道交通的列车运行噪声有着积极的现实意义。     

苏北黄泛区培育绿色食品产业的战略思考

以丰县为例，论述了培育绿色食品产业发展目标以及加快发展的措施。     

国内道路声屏障行业发展中的几个问题浅析

随着国内交通的发展,铁路、公路、桥梁、地铁、轻轨、高架路越来越多,车速越来越快,人们在享受便捷交通的同时也越来越受到交通噪声的困扰,声屏障作为交通噪声治理的主要手段,已得到大规模使用,本文根据作者个人的经验和体会,总结了行业的现状和存在的问题,得出门槛低、预算低、标准落后是目前阻碍声屏障行业发展和水平提高的关键。     

绿色消费模式与循环经济相关性的探讨

绿色消费是循环经济在消费领域的具体形式,它要求人们的消费活动必须有利于环境保护、资源利用和人的整体素质的提高。绿色消费模式是人类发展模式的一次历史性转变,是一种人与自然相互协调的消费观,既强调消费的重要作用,又强调消费和再生产其他环节与环境的动态平衡,有利于取得人类社会和自然的协调发展。     

绿色化学—21世纪的化学

绿色化学是从节约资源和防止污染的角度来重新和改革传统化学。文中评述了近年来对原料、化学反应、产品、催化剂和溶剂的绿色化开展的一些主要研究及目前取得的进展。     

绿色建筑-建筑与环境的和谐共生

人与自然、建筑从来就是不可分的。本文从绿色建筑体系入手,论述了绿色建筑的节能、技术与形式。从建筑与环境的互动中,我们看到了绿色建筑必定成为人类运用科技手段寻求与自然和谐共存,持续发展的理想建筑模式。     

太旧高速公路聂家庄居民区公路声屏障设计方法研究

从聂家庄居民区的声环境现状入手，主要从声学角度阐述了该声屏障的设计方法。     

Environmental assessment of green hardboard production coupled with a laccase activated system

European consumption of wood-based panels reached record levels in recent years driven mostly by demand from end-use sectors: residential construction, furniture, cabinets, flooring and mouldings. The main panel types are composite boards such as particleboard, high density fiberboard (HDF), medium-density fiberboard (MDF) and other adhesively bonded composites such as plywood and wet-process fiberboard (hardboard). The synthetic resins used in their manufacture come from non-renewable resources, such as oil and gas. Several consequences are associated to this type of adhesives: variation in the availability and cost of these wood adhesives depends on raw materials, the formaldehyde emissions as well as the limited recyclability of the final product. Hence, in the search for alternatives to petroleum-based wood adhesives, efforts are being devoted to develop adhesives by using phenolic substitutes based on lignin, tannin or starch. In this context, the forest industry is increasingly approaching to enzyme technology in the search of solutions. The main goal of this study was to assess the environmental impacts during the life cycle of a new process for the manufacture of hardboards manufacture, considering the use of a two-component bio-adhesive formulated with a wood-based phenolic material and a phenol-oxidizing enzyme. This new product was compared to the one manufactured with the conventional phenol-formaldehyde resin. The study covers the life cycle of green hardboards production from a cradle-to-gate perspective, analysing in detail the hardboard plant and dividing the process chain in three subsystems: Fibers Preparation, Board Forming and Board Finishing.Auxiliary activities such as chemicals, bio-adhesive, wood chips, thermal energy and electricity production and transport were included within the system boundaries.Global warming (GW), photochemical oxidant formation (PO), acidification (AC) and eutrophication (EP) were the impact categories analysed in this study. Additionally, the cumulative energy demand was evaluated as another impact category. According to the results, four stages significantly influenced the environmental burdens of the production system: laccase production, on-site thermal energy and electricity production as well as wood chipping stage. Due to the environmental impact associated to the production of green bonding agents, a sensitivity analysis with special focus on the eutrophying emissions was carried out by evaluating the amount of laccase and lignin based phenolic material used. The combined reduction in both bonding agents may slightly reduce the contributions to this impact category. In addition, a hypothetical scenario with no laccase and with a higher concentration of the lignin based material (25% more) could improve the environmental profile in all impact categories with a reduction of 1.5% in EP.Further research should focus mainly on laccase production, in order to reduce its energy demand as well as on the amount of green adhesive required to obtain mechanical and swelling properties similar to those of conventional hardboard.