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首页> 外文期刊>Arabian Journal for Science and Engineering >SnO_x-Impregnated Clinoptilolite for Efficient Mercury Removal from Liquid Hydrocarbon
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SnO_x-Impregnated Clinoptilolite for Efficient Mercury Removal from Liquid Hydrocarbon

机译：SnO_x浸渍斜发沸石可有效去除液态烃中的汞

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摘要

The present study investigates SnOx-impregnated clinoptilolite, which is zeolite belonging to the heulandite family, for developing efficient adsorbent for mercury removal from liquid hydrocarbon. Adsorption experiments were carried out in batch method, and the effects of adsorbent dosage and contact time on the adsorption properties of mercury were investigated. We demonstrated that the SnOx-impregnated clinoptilolite removed the mercury from liquid hydrocarbon with high efficiency, where the maximum capacity was 0.93 ng/g, higher compared with the natural clinoptilolite (0.43 ng/g). Structure and morphology analysis also showed that SnOx was coated on the surface of clinoptilolite, resulting in rougher surface and smaller pore size and volume than those of natural clinoptilolite. Speciation of mercury indicated that the most removed species was organomercury (67.3%), and its removal efficiency increased with the adsorbent dosage. The isotherm analysis revealed that adsorption mechanism was governed by pseudo-second-order kinetics, indicating that the adsorption was a chemical adsorption process due to electrostatic attractions. This finding suggested that clinoptilolite/SnOx was promising adsorbents for organomercury removal from liquid hydrocarbon.
机译：本研究研究了SnOx浸渍的斜发沸石（属于Heulandite族的沸石），以开发用于从液态烃中去除汞的有效吸附剂。采用间歇法进行吸附实验，研究了吸附剂用量和接触时间对汞吸附性能的影响。我们证明，SnOx浸渍斜发沸石可高效去除液态烃中的汞，其最大容量为0.93 ng / g，比天然斜发沸石（0.43 ng / g）高。结构和形态分析还表明，与天然斜发沸石相比，SnOx包覆在斜发沸石的表面，表面更粗糙，孔径和体积更小。汞的形态表明，去除最多的物种是有机汞（67.3％），其去除效率随吸附剂量的增加而增加。等温线分析表明，吸附机理受拟二级动力学控制，表明吸附是由于静电引力引起的化学吸附过程。这一发现表明斜发沸石/ SnOx是从液态烃中去除有机汞的有前途的吸附剂。

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