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- W2359032452 abstract "Manilagrass was planted with direct application of dewatered and dried municipal sewage sludge collected from Xiamen Yundang Wastewater Treatment Plant under pot experiment.The effect of sludge application on the growth and yield of Manilagrass was determined,and the transfer and accumulation of heavy metals in the Manilagrass-soil system was discussed.The results showed that the sludge was rich in nitrogen,phosphorus,potassium and organic matter,and the contents of heavy metals studied were all lower than the limits of national standard,for the disposal of sludge from municipal wastewater treatment plant-quality of sludge used in gardens or parks(GB/T23486—2009).Application of sludge increased the growth and yield of Manilagrass,which presented the maximum values when the sludge content was 20%.But the growth of Manilagrass was significantly inhibited when the sludge content was more than 30%.The bio-accumulation factors of eleven studied heavy metals in Manilagrass were all lower than 1.0,and the bio-accumulation capacity of heavy metals in the tested Manilagrass-soil systems is as follows: CuZnCdCoAsNiVMnPbFeCr.After the planting experiment,the chemical speciation of heavy metals in the rhizosphere soils transformed to some extent.Cd,Cr and As transformed from residual into bio-available fraction,Cu and Zn transformed from oxidizable into acid-soluble and reducible fractions,Mn transformed from reducible into acid-soluble and residual fractions,Ni transformed from bio-available into residual fraction significantly,Co transformed from acid-soluble and reducible into residual fraction,while Pb,Fe and V showed no significant transformation in chemical speciation." @default.
- W2359032452 created "2016-06-24" @default.
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- W2359032452 date "2011-01-01" @default.
- W2359032452 modified "2023-09-26" @default.
- W2359032452 title "EFFECT OF DEWATERED SEWAGE SLUDGE ON THE GROWTH OF MANILA GRASS AND TRANSFER OF HEAVY METALS" @default.
- W2359032452 hasPublicationYear "2011" @default.
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