?Soil for Soil Remediation? Strategy Driven on Converting Natural Soils into Fe2O3-CAN-Type Zeolite Composites for Dual Ionic Heavy Metal-Contaminated Soil Remediation: Universality, Synergistic Effects, and Mechanism

Yang, Dazhong; Ge, Qiuyue; Feng, Xuezhen; Wang, Ranhao; Li, Shangying; Wei, Wenfei; Zheng, Renji; Zhang, Juan; Chen, Hong

2023-03-01

10.1021/acsestengg.2c00397

ACS ES&T ENGINEERING   Impact Factor & Quartile

2690-0645

Herein, we developed a universal "soil for soil remediation" strategy to utilize soil resources for cation-/anion-type heavy-metal-contaminated soil remediation. The representa-tive natural soils fetched from 12 different areas in China have been universally converted into Fe2O3-CAN (hydroxycancrinite) zeolite composite materials. Furthermore, we discover that due to the presence of exchangeable Na+ and OH- in CAN channels together with the intrinsic surface adsorption function of Fe2O3-CAN, Fe2O3-CAN holds distinctive cation/anion dual ion-exchange functions and strong adsorption capacity, which could synergisti-cally remediate cation-/anion-type HM-contaminated soil. When 25 g/kg Fe2O3-CAN is added into Cd/As polluted soil (100-200 ppm), Cd2+ and AsO2- in soil could be immobilized simulta-neously and the Cd/As bioaccumulation in the harvested vegetables is dramatically suppressed with reduction ratios of 48.1-67.0%, effectively reducing the HM enrichment in the phytosphere. Overall, this work confirms the high universality of Fe2O3-CAN synthesis using different types of natural soils and demonstrates that the as-synthesized Fe2O3-CAN composite material can be further effectively used for soil remediation. The "soil for soil remediation" strategy developed here could improve the flexibility and economy of soil remediation, which can be extended to a broad range of locations worldwide.

natural soil hydroxycancrinite heavy metal contamination soil remediation cation anion dual ion exchange

ESCI

English

First ; Corresponding

Natural Science Funds for Distinguished Young Scholars of Guangdong Province, China[2020B151502094] ; National Natural Science Foundation of China[22106064] ; Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials[ZDSYS20200421111401738]

Engineering

Engineering, Environmental

WOS:000951739600001

AMER CHEMICAL SOC

Web of Science

Southern Univ Sci & Technol, Sch Environm Sci & Engn, State Environm Protect Key Lab Integrated Surface, Guangdong Prov Key Lab Soil & Groundwater Pollut C, Shenzhen 518055, Peoples R China

Yang, Dazhong,Ge, Qiuyue,Feng, Xuezhen,et al. ?Soil for Soil Remediation? Strategy Driven on Converting Natural Soils into Fe2O3-CAN-Type Zeolite Composites for Dual Ionic Heavy Metal-Contaminated Soil Remediation: Universality, Synergistic Effects, and Mechanism[J]. ACS ES&T ENGINEERING,2023.

Yang, Dazhong.,Ge, Qiuyue.,Feng, Xuezhen.,Wang, Ranhao.,Li, Shangying.,...&Chen, Hong.(2023).?Soil for Soil Remediation? Strategy Driven on Converting Natural Soils into Fe2O3-CAN-Type Zeolite Composites for Dual Ionic Heavy Metal-Contaminated Soil Remediation: Universality, Synergistic Effects, and Mechanism.ACS ES&T ENGINEERING.

Yang, Dazhong,et al."?Soil for Soil Remediation? Strategy Driven on Converting Natural Soils into Fe2O3-CAN-Type Zeolite Composites for Dual Ionic Heavy Metal-Contaminated Soil Remediation: Universality, Synergistic Effects, and Mechanism".ACS ES&T ENGINEERING (2023).