Carbonaceous halloysite nanotubes for the stabilization of Co, Ni, Cu and Zn in river sediments

Liu, Yunsong1,2,3; Tang, Yuanyuan2,3; Wang, Pengtei2,3,4; Zeng, Hui1

2019-08

10.1039/c9en00326f

Environmental Science-Nano   影响因子和分区

2051-8153

2051-8161

The remediation of heavy metal contaminated sediments has become a global consideration, especially the development of economically and environmentally efficient amendments. As a cost-effective natural mineral with nano structure, halloysite nanotubes were coated with carboxylic groups (HNTs@CRC) by a facile and green method, and the fabricated HNTs@CRC was further employed for the stabilization of Co, Ni, Cu and Zn in Maozhou River sediments. After remediation, the results showed an obvious increase in the residual fraction (F4) of the four heavy metals. Moreover, by mixing HNTs@CRC with Ca(OH)(2), the metal stabilization performance was further enhanced. In comparison with the raw sediment (no amendment), the F4 percentages were increased by 8.0, 1.4, 2.4 and 1.8 times for Co, Ni, Cu and Zn, respectively. After conducting the toxicity characteristic leaching procedure (TCLP), the stabilization ratio (SR%) was calculated with a value of 98.82% for Co, 83.58% for Ni, 90.71% for Cu and 73.99% for Zn. Additionally, the metal stabilization mechanisms were discussed based on the features of HNTs@CRC and HNTs@CRC/Ca.OH) 2, including adsorption, complexation, electrostatic affinity and precipitation. Therefore, by facile and green modification of natural minerals, this study proposed the favorable application of HNTs@CRC, especially HNTs@CRC/ Ca.OH) 2 for the remediation of heavy metal contaminated river sediments.

SCI ; EI

英语

通讯

Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control[2017B030301012]

Chemistry ; Environmental Sciences & Ecology ; Science & Technology - Other Topics

Chemistry, Multidisciplinary ; Environmental Sciences ; Nanoscience & Nanotechnology

WOS:000479313800026

ROYAL SOC CHEMISTRY

20193307313690

Contamination ; Cost effectiveness ; Heavy metals ; Hydrated lime ; Kaolinite ; Nanotubes ; Precipitation (chemical) ; Rivers ; Sediments ; Stabilization

Water Pollution:453 ; Minerals:482.2 ; Soil Mechanics and Foundations:483 ; Metallurgy and Metallography:531 ; Nanotechnology:761 ; Chemical Operations:802.3 ; Inorganic Compounds:804.2 ; Industrial Economics:911.2

Web of Science

1.Peking Univ, Sch Urban Planning & Design, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Guangdong Prov Key Lab Soil & Groundwater Pollut, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Sch Environm Sci & Engn, State Environm Protect Key Lab Integrated Surface, Shenzhen 518055, Peoples R China
4.Dalian Univ Technol, Sch Environm Sci & Technol, State Key Lab Fine Chem, Key Lab Ind Ecol & Environm Engn MOE, Dalian 116024, Peoples R China

Liu, Yunsong,Tang, Yuanyuan,Wang, Pengtei,et al. Carbonaceous halloysite nanotubes for the stabilization of Co, Ni, Cu and Zn in river sediments[J]. Environmental Science-Nano,2019,6(8):2420-2428.

Liu, Yunsong,Tang, Yuanyuan,Wang, Pengtei,&Zeng, Hui.(2019).Carbonaceous halloysite nanotubes for the stabilization of Co, Ni, Cu and Zn in river sediments.Environmental Science-Nano,6(8),2420-2428.

Liu, Yunsong,et al."Carbonaceous halloysite nanotubes for the stabilization of Co, Ni, Cu and Zn in river sediments".Environmental Science-Nano 6.8(2019):2420-2428.