Abstract Different additions of attapulgite, zeolite and hydroxyapatite were applied in vanadium (V)-contaminated soil to investigate and compare their stable efficiencies to vanadium. The results of the stabilization experiments showed that the optimal amounts of passivators were 2%, and their performance was as follows: attapulgite > hydroxyphosphate > zeolite. The highest stable efficiencies of hydroxyphosphate, attapulgite, and zeolite on V in soil were 71.70%, 65.13%, and 41.95%, respectively. The passivation effects of these passivation agents were stable because their stable efficiencies of V could reach a relatively stable state after stabilization for 10 days, and neutral and acidic leaching conditions had little influence on the leaching contents of V. As the results of sequential extraction procedures indicated, the transformation from bioavailable V to residual fraction with the increasing addition of passivators was responsible for the growth stabilization in soils. Due to passivators, their stable efficiency of V had a significant positive correlation with soil pH value (Rattapulgite = 0.9532; Rzeolite = 0.8897; R hydroxyapatite = 0.9028). Therefore, changing the pH value of the soil was an important factor for V stabilization.

中文翻译：

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凹凸棒石、沸石和羟​​基磷灰石修复钒污染土壤的稳定化过程

摘要 将不同添加量的凹凸棒石、沸石和羟​​基磷灰石应用于钒（V）污染的土壤中，以研究和比较它们对钒的稳定效率。稳定化实验结果表明，钝化剂的最佳用量为2%，其性能为：凹凸棒石>羟基磷酸盐>沸石。羟基磷酸盐、凹凸棒石和沸石对土壤中V的最高稳定效率分别为71.70%、65.13%和41.95%。这些钝化剂的钝化效果稳定，稳定10天后V的稳定效率可达到相对稳定的状态，中性和酸性浸出条件对V的浸出量影响不大。表明的，随着钝化剂添加量的增加，从生物可利用 V 到残留部分的转化是土壤中生长稳定的原因。由于钝化剂，它们的 V 稳定效率与土壤 pH 值呈显着正相关（Rattapulgite = 0.9532；Rzeolite = 0.8897；R 羟基磷灰石 = 0.9028）。因此，改变土壤的 pH 值是稳定 V 的重要因素。