Effects of municipal sludge composts on Cu2+adsorption in soil
YANG Yan-qin
WEI Ming-bao
MA Chuang
ZHANG Hong-zhong
Abstract：In order to understand the accumulation rules of heavy metals in soil,the effects of municipal sludge composts on the content of heavy metals,adsorption capacity of copper and the content of nutriment in soil were studied.The results showed that the content of metal heavy metals in soil had little difference before and after adding municipal sludge composts.The adsorption isotherms of copper in the samplesagree well with the Lang-muir equation with all correlation coefficients of above 0.9.Furthermore the application amount of municipal sludge composts should be controlled under 2 000 kg/mu.The addition of municipal sludge composts under 2 000 kg/mu could not only reduce the adsorption capacity of copper,but also increase the content of nutri-ment in soil.
Keywords：municipal sludgecom-postssoilheavy metals accumulationadsorp-tion capacity
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 20-24 )