Influence of composite flocculant FeCl3–APAM on vacuum drainage of river-dredged sludge
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DOI: 10.1139/cgj-2018-0268
Abstract: Sludge is an inevitable product of river dredging and is characterized by a high water content, high fluidity, and high heavy metal content. Its treatment requires consideration of the economic and environmental implications. In this… read more here.
Keywords: dredged sludge; composite flocculant; fecl3; drainage ... See more keywords
FeCl 3 改性钢渣脱除燃煤烟气中Hg 0 的研究
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DOI: 10.13198/j.issn.1001-6929.2017.01.40
Abstract: 以钢铁厂废弃钢渣为原料，以丙酮溶液为分散剂制备FeCl3改性材料，在固定床吸附评价装置上考察了钢渣在FeCl3改性前后对模拟烟气中Hg脱除效果的影响，并结合吸附试验与微观表征对改性催化剂的脱汞性能进行分析.结果表明：氯是FeCl3改性钢渣吸附剂的主要活性组分，FeCl3的掺入使钢渣的比表面积由1.06 m2/g提高到1.32 m2/g，进而提高吸附剂的汞吸附容量，经FeCl3改性后废弃钢渣对汞的脱除效率比未改性前提升了3.2倍.SO2的存在降低了FeCl3改性钢渣材料的脱汞性能，持续通入的SO2与吸附剂接触占据了部分孔道和表面活性位点，使得对单质汞的吸附效率下降，200℃时含有SO2时的FeCl3改性钢渣吸附剂吸附量比未通入SO2气体的改性材料降低了75.57%；在含有HCl气体的烟气体系中，FeCl3改性钢渣材料对汞的脱除效率从3432.70 ng/g升至10341.10 ng/g，并且随着反应温度的升高零价汞向氧化态汞转化的效率增加.研究显示，SO2的存在降低了FeCl3改性钢渣吸附剂的脱汞性能，而HCl气体有效地促进了FeCl3改性钢渣吸附剂对零价汞（Hg0）的脱除. read more here.
Keywords: fecl3 so2; so2 fecl3; fecl3; fecl3 fecl3 ... See more keywords