Facile regeneration and modification of industrial used chelating resin for fuel oil desulfurization

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• 作者：C. He ; B. Xu ; S. Chen ; J. Zhao
• 关键词：Metal ; modified chelating resin ; Regeneration ; Diesel oil ; Desulfurization ; π ; Complexation
• 刊名：International Journal of Environmental Science and Technology
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：14
• 期：1
• 页码：165-176
• 全文大小：
• 刊物主题：Environment, general; Environmental Science and Engineering; Environmental Chemistry; Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution; Soil Science & Conservati
• 出版者：Springer Berlin Heidelberg
• ISSN：1735-2630
• 卷排序：14

文摘

A systematic study was carried out on the preparation and application of metal-loaded polypropylene-divinyl benzene resin for dibenzothiophene adsorption. Amidoxime groups over used industrial polypropylene-divinyl benzene chelating resin were regenerated through a chemical graft reaction, and the highest regeneration efficiency of about 90 % can be reached. Different metal phases (Zn, Ni, Cu, Fe, Bi, and Ag) were introduced to the regenerated resin via an incipient-wetness impregnation method to examine their desulfurization efficiency. The desulfurization efficiency of ca. 86.3 % can be gained over Zn-loaded resin (Zn-R) under optimized reaction conditions. The order of different desulfurization influencing factors was further verified according to the orthogonal experiments, that is, desulfurization temperature > metal loading content > space velocity > organic sulfur concentration. Distribution of adsorption products was analyzed, and the results reveal that the metal-modified resins can effectively remove the organic sulfur compounds in diesel oil without loss of its octane value. The desulfurization effect of metal-contained resins is primary determined by the π-complexation.