Effective Removal and Resource Recovery for Heavy Metal-Organic Complex-Polluted Water via an Integrated Decomplexation-Degradation-Immobilization Pathway

Li, Shangying; Zheng, Renji; Zhou, Yuanhao; Deng, Shimao; Luo, Siyuan; Wang, Ranhao; Feng, Xuezhen; Chen, Hong

2023

10.1021/acsestwater.2c00535

ACS ES&T WATER   Impact Factor & Quartile

2690-0637

Heavy metal-organic complexes widely distributed in wastewater are hazardous and urgently need to be removed and recycled. Herein, copper glycinate (CuGly) was employed as a model complex and removed with the environmentally friendly oxidant ferrate(VI) (Fe(VI)). We found that Fe(VI) can be used to effectively remove CuGly and recycle Cu via a decomplexation- degradation-immobilization coupled pathway, i.e., decomplexing CuGly, degrading organic ligands, and immobilizing the released Cu ions. Theoretical calculation results revealed that CuGly was favored to be oxidized by Fe(VI), and the CuGly decomplexation and organic ligand degradation could spontaneously thermodynamically proceed at room temperature. Although different active oxidation species, including Fe(V), Fe(IV), H2O2, and center dot OH, are present during the Fe(VI) decomposition process, control experiments suggested that Fe(VI), Fe(V), and Fe(IV), rather than H2O2 and center dot OH, played critical roles in CuGly removal. The resultant Fe and Cu precipitate could be further converted to a magnetic composite material, which could be used as a catalyst for antibiotic degradation. This study presents an effective strategy and the comprehensive underlying mechanisms of synergistic heavy metal-organic complex removal and metal resource recycling using ferrate, which could be extended to green chemical treatment of heavy metal-organic complexes in various wastewater bodies.

heavy metal-organic complex copper glycinate ferrate removal decomplexation degradation

ESCI

English

First ; Corresponding

National Key Research and Development Program of China[2021YFA1202500] ; Natural Science Funds for Distinguished Young Scholar of Guangdong Province, China[2020B151502094] ; Foundation of Shenzhen Science, Technology and Innovation Commission, China[JCYJ20200109141625078] ; Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials[ZDSYS20200421111401738] ; National Natural Science Foundation of China[22106064]

Environmental Sciences & Ecology ; Water Resources

Environmental Sciences ; Water Resources

WOS:000924052800001

AMER CHEMICAL SOC

Web of Science

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

Li, Shangying,Zheng, Renji,Zhou, Yuanhao,et al. Effective Removal and Resource Recovery for Heavy Metal-Organic Complex-Polluted Water via an Integrated Decomplexation-Degradation-Immobilization Pathway[J]. ACS ES&T WATER,2023.

Li, Shangying.,Zheng, Renji.,Zhou, Yuanhao.,Deng, Shimao.,Luo, Siyuan.,...&Chen, Hong.(2023).Effective Removal and Resource Recovery for Heavy Metal-Organic Complex-Polluted Water via an Integrated Decomplexation-Degradation-Immobilization Pathway.ACS ES&T WATER.

Li, Shangying,et al."Effective Removal and Resource Recovery for Heavy Metal-Organic Complex-Polluted Water via an Integrated Decomplexation-Degradation-Immobilization Pathway".ACS ES&T WATER (2023).