Ammonium exchange capacity of the Xerovouni zeolitic tuffs, Avdella area, Evros Prefecture, Greece
Ammonium exchange capacity of the Xerovouni zeolitic tuffs, Avdella area, Evros Prefecture, Greece
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希腊埃夫罗斯州阿夫德拉地区 Xerovouni 沸石凝灰岩的铵交换能力
DOI：
10.1180/claymin.2011.046.2.179
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发表时间：
2011
期刊：
影响因子：
1.5
通讯作者：
C. Sikalidis
中科院分区：
文献类型：
--
作者：
E. Tzamos;N. Kantiranis;G. Papastergios;D. Vogiatzis;A. Filippidis;C. Sikalidis
Avdella地区Xerovouni地区沸石凝灰岩平均含有54wt.%的HEU型沸石，6wt.%的蒙皂石，4wt.%的云母(微孔矿物)，8wt.%的碱性长石，9wt.%的斜长石，11wt.%的方石英和8wt.%的石英(36 wt.%的非微孔矿物)。HU型沸石的化学式为Ca2.4K0.6Na0.4Mg0.3Al6.7Si29.3O72·17H2O，凝灰岩中SiO_2平均含量为72.3%，Al_2O_3为11.9%，Fe_2O_3为1.2%，镁为1.0%，CaO为2.8%，Na_2O为1.3%，K_2O为1.9%。沸石凝灰岩的平均氨交换量为144meq/100g，其中HEU型沸石占大部分，蒙脱石和云母贡献较小。Xerovouni沸石凝灰岩的铵交换容量与(A)HEu型沸石含量、(B)总微孔矿物含量、(C)烧失量和(D)CaO含量呈正相关。这种材料可用于多种农业、水产养殖、工业和环境应用。
Abstract Zeolitic tuffs from the Xerovouni location of the Avdella area (Evros Prefecture, Greece) contain on average 54 wt.% HEU-type zeolite, 6 wt.% smectite, 4 wt.% mica (64 wt.% microporous minerals), 8 wt.% alkali feldspar, 9 wt.% plagioclase, 11 wt.% cristobalite and 8 wt.% quartz (36 wt.% non-microporous minerals). The chemical formula of the HEU-type zeolite is Ca2.4K0.6Na0.4Mg0.3Al6.7Si29.3O72·17H2O and the tuffs contain on average 72.3 wt.% SiO2, 11.9 wt.% Al2O3, 1.2 wt.% Fe2O3, 1.0 wt.% MgO, 2.8 wt.% CaO, 1.3 wt.% Na2O and 1.9 wt.% K2O. The zeolitic tuffs show an average ammonium exchange capacity of 144 meq/100 g. HEU-type zeolite accounts for the most of the ammonium exchange capacity, while smectite and mica contribute to a relatively small extent. The ammonium exchange capacity of the Xerovouni zeolitic tuffs showed positive correlations with (a) the HEU-type zeolite content, (b) the total microporous minerals content, (c) the loss on ignition content and (d) the CaO content. Such materials could be used in a large variety of agricultural, aquacultural, industrial and environmental applications.