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Residual effects of tobacco biochar along with different fixing agents on stabilization of trace elements in multi-metal contaminated soils

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Journal of Environmental Sciences 2020年第1期32卷 299-309页

作者： Altaf Hussain Lahori Monika Mierzwa-Hersztek Muhammad Rashid Shahmir Ali Kalhoro Mehrunisa Memon zobia naheed Muneer Ahmed Zengqiang Zhang College of Natural Resources and Environment Northwest A&F UniversityYanglingShannxi 712100China Department of Environmental Sciences Sindh Madressatul Islam UniversityKarachiPakistan Department of Agricultural and Environmental Chemistry University of Agriculture in KrakowalMickieivicza 2131-120KrakowPoland Faculty of Agriculture Lasbela University of AgricultureWater and Marine SciencesUthal 90150Pakistan Department of Soil Science Sindh Agriculture UniversityTandojamPakistan Agriculture Research Station BaffaMansehraKhyber PakhtunkhwaPakistan

The residual effect of tobacco biochar(TB≥500°C)mono and co-application with Cahydroxide(CH),Ca-bentonite(CB)and natural zeolite(NZ)on the bio-availability of trace elements TE(s)in alkaline soils has not been deeply studied yet.A pot study that had earlier been investigated TB mono and blended with CH,CB and NZ on the immobilization of Pb,Cu Cd,and Zn by Chinese *** crop in the rotation was selected as test plant to assess the residual impact of amendments on stabilization of Pb,Cu Cd,and Zn in mine polluted(M-P),smelter heavily and low polluted(S-HP and S-LP,respectively)*** obtained results showed that stabilization of Pb,Cd,Cu and Zn reached 63.84% with TB+CB,61.19% with TB+CH,83.31% with TB+CH and 35.27% with TB+CH for M-P soil,36.46% with TB+NZ,38.46% with TB+NZ,19.40% with TB+CH and 62.43% with TB+CH for S-LP soil,52.94%TB+NZ,57.65% with TB+NZ,52.94% with TB+NZ,and 28.44% with TB+CH for S-LP ***,TB+CH and TB alone had mobilized Pb and Zn up to19.29% and 34.96% in M-P *** mobility of Zn reached 8.38% with TB+CB and 66.03% with TB for S-HP and S-LP *** uptake and accumulation of Pb,Cd,Cu and Zn in shoot and root were reduced in three polluted ***,the combination of TB along with CH,CB and NZ has been proven to be effective in Pb,Cd,Cu and Zn polluted mine/smelter soils restoration.

关键词： Tobacco biochar Residual effect Trace elements stabilization Maize Soil remediation

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