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dc.contributor.authorXu, Bu-Deen_US
dc.contributor.authorLi, De-Changen_US
dc.contributor.authorQian, Tingtingen_US
dc.contributor.authorJiang, Hongen_US
dc.identifier.citationXu, B., Li, D., Qian, T. & Jiang, H. (2020). Boosting the activity and environmental stability of nanoscale zero-valent iron by montmorillonite supporting and sulfidation treatment. Chemical Engineering Journal, 387, 124063-.
dc.description.abstractGiven its high activity and nontoxicity, nanoscale zero-valent iron (nZVI) has been intensively used to remediate the groundwater contaminated by trichloroethylene (TCE). However, the long-term stability of nZVI could be impaired by aging and natural organic matter. Herein, a montmorillonite-supported sulfurated nZVI (S-nZVI/MMT) was successfully synthesized, which exhibited robust activity and stability under environmental conditions through the interlayer interaction of MMT. The removal efficiency of TCE by S-nZVI/MMT reached 78.7%, which was much higher than that by S-nZVI and nZVI/MMT, within 12 h with Fe/S dosage ratio of 1:1 and particle dosage of 4 g/L. Importantly, the presence of high concentration of humic acid (up to 50 mg/L) caused unobvious effect on the performance of S-nZVI/MMT toward TCE removal, and more than 68.1% of removal efficiency of TCE could be maintained when the particle was aged in water for 30 days. The high activity and stability of S-nZVI/MMT may be attributed to the formation of nano-sized S-nZVI clusters in the MMT interlayer, protecting the active sites from passivation of humic acid. This work may promote the application of nZVI under complex natural conditions.en_US
dc.relation.ispartofChemical Engineering Journalen_US
dc.rights© 2020 Elsevier B.V. All rights reserved.en_US
dc.titleBoosting the activity and environmental stability of nanoscale zero-valent iron by montmorillonite supporting and sulfidation treatmenten_US
dc.typeJournal Articleen
dc.contributor.researchNanyang Environment and Water Research Instituteen_US
dc.contributor.researchAdvanced Environmental Biotechnology Centre (AEBC)en_US
dc.description.acknowledgementThe authors gratefully acknowledge financial support from National Natural Science Foundation of China (21876166, 41501247), and the Key Special Program on the S&T for the Pollution Control, and Treatment of Water Bodies (No. 2017ZX07603-003).en_US
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