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- W3043201352 abstract "Heavy metal pollution in soil will have a serious impact on human health and ecological environment. Soil amendments such as peat can reduce the bioavailability of heavy metals at a lower cost. This study developed sulfonated peat to improve its performance. The present study concentrates on the use of peat and sulfonated peat at different application amount (0, 2.5 %, 5 % and 10 %) in Cr-contaminated soil to immobilize Cr and minimize its uptake in Pak-choi. 10 % sulfonated peat has the best stabilization effect revealed that the amount of water-soluble state, exchangeable state and acid-soluble Cr decreased by 90 % and residual Cr increased by 20 %, as assessed by a batch test. Because of sulfonated peat has a stronger ion-exchange and complexation reaction with Cr, so it is easier to convert into oxidizable or reducible fractions. During the three-month observation period of pot experiment, the ability of reduced metal accumulation followed the sequence sulfonated peat > natural peat. Compared with the natural peat, the uptake of Cr in Pak-choi reduced about 50 % by adding sulfonated peat, and Pak-choi grow better, which indicated that the sulfonated peat was a promising in-situ remediation technique for Cr-contaminated soil. However, the impact of sulfonated peat on soil microorganisms needs further study." @default.
- W3043201352 created "2020-07-23" @default.
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- W3043201352 date "2020-10-01" @default.
- W3043201352 modified "2023-10-14" @default.
- W3043201352 title "Effects of sulfonated peat on Cr chemical fraction in soil and Cr uptake in Pak-choi" @default.
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- W3043201352 doi "https://doi.org/10.1016/j.jece.2020.104278" @default.
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