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首页> 外文期刊>Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies >Reduction of Pb and Zn bioavailable forms in metal polluted soils due to paper mill sludge addition - Effects on Pb and Zn transferability to barley
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Reduction of Pb and Zn bioavailable forms in metal polluted soils due to paper mill sludge addition - Effects on Pb and Zn transferability to barley

机译：造纸厂污泥的添加减少了金属污染土壤中铅和锌的生物有效性形式-对铅和锌向大麦的转移性的影响

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In the last few years solidification/stabilisation of acidic soils polluted by heavy metals with low-cost sorbents has been investigated. Paper mill sludges are produced in large amounts and their disposal is a serious environmental problem. The possibility was therefore studied of using paper mill sludge as a stabilizer to reduce the bioavailable metal forms in polluted soils and thus the transferability of metals to plants (barley). We first investigated the sorbing properties of paper mill sludge for Zn(II) and Pb(II) and then their fractionation both in a polluted soil and in the same soil amended with paper mill sludge in order to check the decrease in mobile forms. Finally in both soils we tested the uptake of two metals by common barley in order to assess the performance of soil remediation from an ecological point of view. The addition of paper mill sludge to a soil contaminated by lead and zinc induces a decrease in the mobile forms of both metals, probably due to the presence in sludge of organic matter and kaolinite, which are able to bind the metals very strongly. The decrease in the mobile forms, which are the most readily available for uptake by plants, corresponds to a decrease in plant uptake. (c) 2006 Elsevier Ltd. All rights reserved.
机译：在最近几年中，已经研究了使用低成本吸附剂对重金属污染的酸性土壤的固化/稳定化。造纸厂的污泥大量生产，其处置是一个严重的环境问题。因此，研究了使用造纸污泥作为稳定剂来减少污染土壤中生物可利用的金属形式以及金属向植物（大麦）的转移性的可能性。我们首先研究了造纸厂污泥对Zn（II）和Pb（II）的吸附特性，然后研究了它们在污染土壤中以及在经过造纸厂污泥改良的同一土壤中的分馏情况，以检查流动形式的减少。最后，在两种土壤中，我们测试了普通大麦对两种金属的吸收，以便从生态角度评估土壤修复的性能。将造纸厂的污泥添加到被铅和锌污染的土壤中会导致两种金属的流动形式减少，这可能是由于污泥中存在有机物和高岭土，它们能够非常牢固地结合金属。最容易被植物吸收的移动形式的减少对应于植物吸收的减少。 （c）2006 Elsevier Ltd.保留所有权利。

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