文章基本信息

标题：Moringa oleifera seed composite a novel material for hazardous heavy metals (Cd, Cr and Pb) removal from aqueous systems
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作者：K. Ravikumar ; J. Udayakumar
期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2020
卷号：11
期号：1
页码：123-138
出版社：University of Mohammed Premier Oujda
摘要：In this study Moringa oleifera-bentonite clay nanocomposite was successfully prepared by the solution intercalation process. The intercalation of the cationic biopolymer Moringa oleifera seed into layered silicate bentonite clay through cation exchange process results in nano-composite with interesting structural and functional properties. By the method of adsorption filtration study through clay-polymer composite media of Moringa oleifera seed and bentonite clay, the heavy metals removal for a particular flow rate of 50 ml per minute at optimum pH was attained and it showed that the average removal efficiency of cadmium, chromium and lead at 20cm from the base of the column were 99.98% (pH range 7-8), 99.99% (pH range 2-3) and 99.99% (pH range 6-7) respectively in the cases of 2 to 20mg/l of heavy metals. So, clay-polymer composite media adsorption using Moringa oleifera seed composite is suitable for drinking water treatment with necessary pH adjustments. During this processes the metal interacts physico-chemically with the composite to form clay-polymer-metal exfoliated complexes. The major advantages of the process are the more shelf life of clay-polymer media, high regeneration efficiency and easier sludge disposal.
关键词：Clay;polymer composite; Moringa oleifera; Bentonite clay; Biopolymer; Hazardous heavy metals