原料和化学活化的天然沸石作为废水中重金属离子的潜在吸附剂的特性

Q4 Chemistry

Bulgarian Chemical Communications Pub Date : 2019-09-01 DOI:10.34049/bcc.51.3.5062

N. Krstic, M. Stanković, D. Đorđević, V. Dimitrijević, M. Marinković, M. Đorđević, A. Bojić

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引用次数: 2

摘要

本研究采用FTIR、XRD、SEM-EDX、TGA和BET等方法对塞尔维亚Zlatokop矿床的天然沸石和化学活化的天然沸石进行了研究，以确定其作为潜在吸附材料的性能。结果表明，这些材料具有多孔(中孔范围)和明确的晶体铝硅酸盐结构，以Na+， K+，如Ca2+和Mg2+为主交换阳离子。斜沸石的含量(约90%)表明该沸石样品为优质沸石。对这些材料对水溶液中铜(II)离子的吸附分析表明，碱活化沸石(zVBB)比天然(zVBN)和酸活化(zVBA)沸石对铜(II)离子的去除效果更好。由于这些是初步的吸附试验，所研究的沸石将在不同的实验条件下进一步研究。

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Characterization of raw and chemically activated natural zeolite as a potential sorbent for heavy metal ions from waste water

In this study, raw and chemically activated natural zeolite from Zlatokop deposit (Serbia) were investigated by FTIR, XRD, SEM-EDX, TGA and BET in order to define their properties as further potential sorption materials. Obtained results indicate porous (meso-pore range) and defined crystal alumino-silicate structure of these materials, with Na+, K+, such as Ca2+ and Mg2+ as dominating exchangeable cations. Content of clinoptilolite (ca. 90%) indicates the high quality of the zeolite samples. Preliminary sorption analyses of these materials toward copper(II) ion from aqueous solution showed good removal efficiency for base activated zeolite (zVBB) compared to raw natural (zVBN) and acid activated (zVBA) zeolite. Since these were preliminary sorption tests, the investigated zeolites will be further examined under different experimental conditions.

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