Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s11368-015-1127-1 |
Immobilization of copper, lead, and nickel in two arid soils amended with biosolids: effect of drinking water treatment residuals | |
Elkhatib, Elsayed A.1; Moharem, Mohamed L.2 | |
通讯作者 | Elkhatib, Elsayed A. |
来源期刊 | JOURNAL OF SOILS AND SEDIMENTS
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ISSN | 1439-0108 |
EISSN | 1614-7480 |
出版年 | 2015 |
卷号 | 15期号:9页码:1937-1946 |
英文摘要 | This study was conducted to determine the potential of drinking water treatment residuals (DWTRs) land application in altering the distribution of Cu, Pb, and Ni among soil fractions. The main objectives of the study were to (1) assess the mobility and availability of biosolid-born Cu, Pb, and Ni in two arid zone soils differing widely in soil properties and (2) evaluate the efficiency of inexpensive DWTRs at various rates on immobilization and chemical transformation of Cu, Pb, and Ni in the biosolid-amended soils. Two agricultural arid soils (calcareous and sandy) were collected and subsamples were amended with a combination of biosolids (3 %, w/w) and DWTRs (2, 4, 6, and 8 %, w/w). The amended and unamended soils were incubated for 2 months and sampled for metal bioavailability using diethylene triamine penta acetic acid (DTPA) extractant. The sequential extraction technique was performed to determine the effect of DWTRs on the distribution of Cu, Pb, and Ni among exchangeable, carbonate, oxides, organic, and residual fractions. Application of DWTRs at different rates to the biosolid-amended soils greatly increased residual (RS) Cu, Pb, and Ni fractions and concurrently decreased nonresidual (NORS) fractions in both calcareous and sandy soils. The greatest reduction in NORS fractions were obtained at the highest application rate (8 %). The NORS-Cu, Pb, and Ni fractions in biosolid-amended soils (control) decreased significantly from 51.79 to 20.93 %, from 54.5 to 39.82 %, and from 50.93 to 17.85 % respectively in calcareous soil and from 78.64 to 32.53 %, from 66 to 55.33 %, and from 55.89 to 22.63 % respectively in sandy soils. Thus, DWTRs contributed in Cu, Pb, and Ni fractions conversion from labile forms to more stable forms. Addition of DWTRs to biosolid-amended soils significantly reduced the availability of Cu, Pb, and Ni by chemical modification of their chemical speciation into less available forms. Our results suggest that DWTRs application could relieve the heavy metals risk of sewage sludge and spotlight the benefit of application of biosolid-amended soils with DWTRs. |
英文关键词 | DTPA extractant Heavy metals Sequential extraction Water treatment residuals |
类型 | Article |
语种 | 英语 |
国家 | Egypt |
收录类别 | SCI-E |
WOS记录号 | WOS:000359938600010 |
WOS关键词 | HEAVY-METALS ; CONTAMINATED SOILS ; ALKALINE SOILS ; CO-APPLICATION ; SEWAGE-SLUDGE ; ZINC ; PHOSPHORUS ; EXTRACTION ; CADMIUM ; IRON |
WOS类目 | Environmental Sciences ; Soil Science |
WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/188953 |
作者单位 | 1.Univ Alexandria, Coll Agr Elshatby, Dept Soil & Water, Alexandria 21545, Egypt; 2.Minist Agr, Food & Feed Res Inst, Cairo, Egypt |
推荐引用方式 GB/T 7714 | Elkhatib, Elsayed A.,Moharem, Mohamed L.. Immobilization of copper, lead, and nickel in two arid soils amended with biosolids: effect of drinking water treatment residuals[J],2015,15(9):1937-1946. |
APA | Elkhatib, Elsayed A.,&Moharem, Mohamed L..(2015).Immobilization of copper, lead, and nickel in two arid soils amended with biosolids: effect of drinking water treatment residuals.JOURNAL OF SOILS AND SEDIMENTS,15(9),1937-1946. |
MLA | Elkhatib, Elsayed A.,et al."Immobilization of copper, lead, and nickel in two arid soils amended with biosolids: effect of drinking water treatment residuals".JOURNAL OF SOILS AND SEDIMENTS 15.9(2015):1937-1946. |
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