共查询到19条相似文献,搜索用时 687 毫秒
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卤氧化铋/石墨烯是一种具有良好可见光催化活性的复合光催化材料,成为众多学者的研究热点.综述了水热法、溶剂热法、沉淀法和超声/微波辅助法等合成方法在卤氧化铋/石墨烯复合催化剂制备中的应用,总结了石墨烯/卤氧化铋在废气净化和废水处理中的应用,并从制备方法改进、应用领域拓展、催化活性提高等方面对卤氧化铋/石墨烯复合催化剂的研... 相似文献
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本实验以粘胶基活性炭纤维和酚醛树脂复合,制备出了一种可用于烟气脱硫的活性炭纤维复合材料(ACFM),考察了制备工艺条件对脱硫性能和比表面积的影响,测试其在填充床的压降。结果表明:粘结剂用量、炭化及活化条件对样品的脱硫性能和比表面积有较大的影响;与其他活性炭材料相比ACFM压降相对较低,只有活性炭纤维的1/20。 相似文献
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石墨烯是一种由单层碳原子以sp2杂化轨道形成的周期蜂窝状点阵结构的二维新材料,具有比表面积大、吸附性能好、电子迁移率高等特性,在环保领域有着广泛的应用。文章简述了石墨烯的制备方法,介绍了石墨烯材料在水处理和大气处理中的应用,并对其在环保领域的应用前景进行了展望。 相似文献
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近年来,纳米零价铁(nZVⅠ)凭借其反应活性强等优势被广泛应用于石油污染场地修复研究。文章结合国内外研究情况,针对氯代烃污染物的修复机理作了阐述,分析了nZVⅠ的制备方式、改性优化等方面内容,重点阐述了nZVⅠ在原位修复过程中存在的典型问题及应用研究现状。电爆炸法作为一种低成本、可批量 生产的方法,同时通过固体负载、表面修饰等改性手段开发新型nZVⅠ材料,是nZVⅠ工程应用的有效手段。鉴于nZVⅠ及其改性材料具有成本低、扰动小、用途广等特点,该类材料在石油污染场地风险控制及修复治理中有较大的研究潜力与应用价值。 相似文献
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谢伟雪 《环境保护与循环经济》2021,41(4):17-20
近年来,废纺织品的产生量日益增长,废纺织品的资源化利用成为热点.以废纺织品为对象,分析废纺织品制备生物炭的方法及其性质.采用含有硝酸盐和磷酸盐的混合液处理剂对废纺织品进行预处理后制备生物炭材料,能够降低炭化的温度,提高纤维状生物炭的产率.废纺织品制备生物炭的粒径小于等于20目、含水率小于10%时,将会提高热解炭化的效果... 相似文献
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环境友好新型聚乳酸复合材料的研究及应用 总被引:1,自引:0,他引:1
聚乳酸(PLA)复合材料是一类重要的环境友好新型可降解材料。该材料通常是以PLA高分子为基体,以无机钙质成分(如羟基磷灰石、磷酸钙、珊瑚、珍珠层)、碳纤维、生物活性成分、有机物等为增强材料复合而成。概述了近年来国内外通过共聚、共混、复合等改性方法获得PLA复合材料的研究进展;论述了PLA复合材料的制备方法、生物相容性、力学性能、开发现状及应用等;指出使用新型的复合工艺、采用超细的无机粒子或纳米增强材料或加入特殊填料,同时开发新型增强物质是PLA复合材料的发展趋势;展望了PLA复合材料的应用前景。 相似文献
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新型垃圾衍生燃料制备工艺 总被引:2,自引:0,他引:2
介绍了一项新型垃圾衍生燃料RDF制备技术。该技术通过改变现有焚烧炉工作状况入手,利用专有技术对南方高湿混合生活垃圾进行预处理制成衍生燃料后再进行焚烧,降低了垃圾焚烧处理对原料、热值及水分的要求,提高了焚烧法处理垃圾的适用范围,减少了能耗及成本,提高了处理能力和热能输出,极大降低了焚烧尾气所造成的二次污染,实现了重要技术突破。 相似文献
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Waste materials for activated carbon preparation and its use in aqueous-phase treatment: a review 总被引:6,自引:0,他引:6
Dias JM Alvim-Ferraz MC Almeida MF Rivera-Utrilla J Sánchez-Polo M 《Journal of environmental management》2007,85(4):833-846
Commercial activated carbon is a preferred adsorbent for the removal of micropollutants from the aqueous phase; however, its widespread use is restricted due to high associated costs. To decrease treatment costs, attempts have been made to find inexpensive alternative activated carbon (AC) precursors, such as waste materials. Some reviews report the use of waste materials for the preparation of AC; however, these studies are restricted to either type of wastes, preparation procedures, or specific aqueous-phase applications. The present work reviews and evaluates literature dedicated both to the preparation of AC by recycling different types of waste materials and also to its application in various aqueous-phase treatments. It is clear that conventional (from agriculture and wood industry) and non-conventional (from municipal and industrial activities) wastes can be used to prepare AC, that can be applied in various aqueous treatment processes, namely to remove organic pollutants, dyes, volatile organic compounds, and heavy metals. Moreover, high surface areas can be obtained using either physical or chemical activation; however, combined treatments might enhance the surface properties of the adsorbent, therefore increasing its adsorption capacity. It is evident from the revision made that AC prepared from both conventional and non-conventional wastes might effectively compete with the commercial ones. This happens mostly when the activation procedures are optimized considering both the raw material used to produce the carbons and the contaminants to be removed. 相似文献
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Braden R. Allenby 《环境质量管理》1996,5(4):69-84
Industrial ecology is a new multidisciplinary field of study requiring that economic activity be integrated with, and have minimal impact on, surrounding natural systems. This systems-based approach is beginning to be implemented in private firms through the development of Design for Environment (DFE) methodologies and tools which support the integration of technological and environmental considerations in all economic activities. As part of this development process, a matrix system is proposed by the author by which the environmental and energy costs embedded in materials as used in generic applications may be identified, facilitating environmentally and economically efficient selection of materials. This Material Environmental Evaluation Matrix is supported by checklists which inform the evaluation process. A set of completed matrices for major materials in common applications forms the basis for an Environmentally Efficient Materials Database (EEMD). Once completed, the EEMD would inform consumers, product and process designers, business planners and managers, regulators and government purchasers, public interest groups, and others in their choice of optimal, environmentally and economically efficient, material options. 相似文献
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本文以乐山某铝业有限公司新建10万吨电解铝工程为例,简述了电解铝生产工艺,重点对电解铝工程的清洁生产进行分析。从生产工艺的先进性、污染物排放量少、清洁原料、原辅材料消耗低、节能措施和废物回收利用等方面对预焙阳极电解槽技术的清洁生产进行分析。通过清洁生产指标分析结果,乐山某铝业有限公司电解铝工程满足清洁生产标准要求,经预焙槽技术和自焙槽相比,预焙槽技术具有污染物排放量少,物耗能耗低,使用原辅料清洁,电流效率高的特点,以不同预焙槽原辅材料消耗量回归分析结果及其综合分析,大型预焙阳极电解槽技术是铝电解行业的清洁生产工艺。 相似文献
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Fazal Haq Hazrat Ali Muhammad Shuaib Malik Badshah Syed Waqas Hassan Muhammad Farooq Hussain Munis 《International Journal of Green Energy》2016,13(14):1413-1441
Natural energy sources like petrol and diesel are going to be diminished in the coming future which will lead to increase in the prices and demands of fossil fuels. Therefore, it is important to find a sustainable alternate of fossil fuels. Bioethanol is one of the alternatives, which is produced from different feedstocks including sugar-based, starch-based and lignocellulose-based materials through fermentation. Since sugar-based (sugar cane and sugar beet) and starch-based (corn) materials are sources of staple food, therefore, research on lignocellulosic materials for bioethanol production is a subject of recent studies. Ethanol production from lignocellulosic materials involves different steps, such as pretreatment, hydrolysis, followed by fermentation process and finally ethanol purification. In this review, we have summarized the recent progresses in bioethanol production and processing from lignocellulosic materials. 相似文献
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N. Earl. Spangenberg 《Journal of the American Water Resources Association》1997,33(2):251-253
ABSTRACT: Water resources professionals are being increasingly called upon to address complex problems which require the interaction of several individuals operating as a planning or implementation team. Education for water resources professionals must move to meet the demands of this mode of operation. To best prepare the student, educational programs must focus not only on technical competence but must also incorporate concepts of cooperative problem solving with individuals from a diversity of backgrounds as a part of the curriculum. Among strategies which may work are academic requirements outside of the technical specialty, modification of existing course materials, and inclusion of outside faculty as a part of departmental curriculum preparation. 相似文献
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