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Study of Mercury Adsorption Mechanism by Modification Activated Carbon

Abstract

汞是唯一在常温常压下呈液态的金属,汞及其化合物有机汞对人体和生物具有很强的毒性。人为排放被认为是汞污染的最主要来源,化石燃料及垃圾废物焚烧产生大量单质汞及氧化态汞,可随着大气进行远距离的迁移扩散,并以降雨等形式污染水体及土壤环境,再通过食物链危害整个生态系统。烟气净化设备中的常规除尘、脱硫脱硝等装置对汞有一定的去除效率,但仍有大量汞未被捕集散逸到空气中。活性炭喷射技术是目前应用最广泛的一种脱汞方法,而活性炭物理化学性质是影响吸附效果的重要因素。国内外对改性活性炭进行了大量研究,以期获得高吸附能力、低成本的脱汞材料。 本文通过高温惰性氛围加热、苯甲酸化学浸渍等方法对原始商业活性炭BPL进行表面...Mercury is the only metal which is liquid at room temperature and atmospheric pressure, mercury and its derivatives organic mercury are highly toxic on the human body and biological. Anthropogenic emissions is the main source of global mercury pollution, the element mercury and oxidized mercury from fossil fuels and waste incineration can seriously pollute soil and water resources with the long-di...学位:工学硕士院系专业:海洋与环境学院环境科学与工程系_环境工程学号:2262010115136

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