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| DOI： |
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| The Effect of Modified Nano-carbon Black Particles on Available Nitrogen in Remediating Cd-Contaminated Soil |
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SUN Zihan, CHENG Jiemin, LI Xinrui
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College of Geography and Environmental, Shandong Normal University, Jinan 250014, China
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| Abstract: |
| Pot experiment was conducted in this paper to study the effect of nano-carbon black particles modified by nitric acid-potassium permanganate (MBC) on available N in remediating Cd-contaminated soils. We used ryegrass (Lolium Perenne L.) and red beet (Beta vulgaris L. var. cicla L.) as the plant model. The results showed that although MBC alone can reduce the content of DTPA-Cd in soil, a combined use of it with the two plants was more efficient. MBC significantly increased the available nitrogen and hence promoted plant growth; there is no significant difference in the available N between ryegrass and red beet. Adding MBC to the soil could slow down the decrease of available N and hence increased nutrient retention in soil. Our results provided an efficient in-situ technology to remediate soils slightly polluted by heavy metals. |
| Key words: modified nano-carbon black; Cd pollution; available nitrogen; phytoremediation |
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