Effect of nanoscale hydroxyapatite on soil adsorption and desorption of heavy metals(纳米羟基磷灰石对土壤重金属吸附与解吸特性的影响)
采用纳米羟基磷灰石(nano-HAP)对安吉(AS)和华家池(HS)的土壤进行重金属吸附-解吸实验.结果表明，土壤对重金属的吸附均可用Langmuir方程描述，重金属在土壤中的亲和力顺序：Pb( Ⅱ )>Cu( Ⅱ )>Cd(Ⅱ)> Zn(Ⅱ). AS的pH值、土壤有机质(OM)含量和阳离子交换量(CEC)均高于HS，因此具有更强的吸附性能.nano-HAP的施加显著增加了土壤对重金属的吸附量和吸附亲和力，nano-HAP添加量为3%时，AS和HS的KCu值分别从0.979 1和0.284 9提高至1.389 7和1.131 6，KPb值分别从0.566 8和0.234 3增...
| Main Authors: | , |
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| Format: | Article |
| Language: | zho |
| Published: |
Zhejiang University Press
2015-11-01
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| Series: | Zhejiang Daxue xuebao. Lixue ban |
| Subjects: | |
| Online Access: | https://doi.org/10.3785/j.issn.1008-9497.2015.06.017 |