Enhanced Cr(VI) reduction on natural chalcopyrite mineral modulated by degradation intermediates of RhB

Zheng，Renji1,2; Li，Jing1; Zhu，Runliang3; Wang，Ranhao1; Feng，Xuezhen1; Chen，Zhijie1; Wei，Wenfei1; Yang，Dazhong1; Chen，Hong1

2022-02-05

10.1016/j.jhazmat.2021.127206

JOURNAL OF HAZARDOUS MATERIALS   影响因子和分区

0304-3894

1873-3336

Wastewater with complex compositions of both heavy metals and organic pollutants is of critical environmental and socioeconomic threat worldwide, which urgently requires feasible remediation technologies to target this challenge. In this study, natural chalcopyrite (CuFeS, NCP), the most abundant copper-based mineral in the Earth's crust, has been discovered to be a heterogeneous catalyst that can activate peroxydisulfate (PDS) for the simultaneous degradation of organic pollutant Rhodamine B (RhB) and reduction of hexavalent chromium (Cr(VI)). Batch experimental results indicate that both RhB and Cr(VI) could be simultaneously removed under a near-neutral condition in NCP/PDS combined system. The radicals SO and OH generated from PDS activation are the main oxidative species detected by electron paramagnetic resonance (EPR) spectroscopy. SO acted as a predominant role in RhB degradation, while Cr(VI) reduction is mainly attributed to the oxidization of S and S species on NCP surface, as well as the photoreduction performance of NCP, which could be enhanced by the intermediates generated from RhB degradation. Density functional theory (DFT) calculation results disclose that Fe is the critical catalytic site for PDS activation. This work demonstrates a user-friendly strategy for remediation of complex wastewater containing both heavy metal and organic pollutants by combining photoreduction and advanced oxidation processes (AOPs) with natural minerals. It paves a way for wastewater treatment by utilizing low-cost natural abundant minerals as catalysts.

Cr(VI) reduction mineral material natural chalcopyrite peroxydisulfate wastewater treatment

SCI ; EI

英语

第一 ; 通讯

WOS:000703789900006

20213810911859

Catalysts ; Chemical activation ; Chromium compounds ; Copper compounds ; Density functional theory ; Electron spin resonance spectroscopy ; Environmental technology ; Heavy metals ; Paramagnetic resonance ; Paramagnetism ; Rhodium compounds ; Wastewater treatment

Industrial Wastes Treatment and Disposal:452.4 ; Environmental Engineering:454 ; Metallurgy and Metallography:531 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Chemistry:801 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Probability Theory:922.1 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4

ENGINEERING

2-s2.0-85115036803

Scopus

1.School of Environmental Science and Engineering,Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control,Southern University of Science and Technology,Shenzhen,518055,China
2.National Engineering Laboratory for Methanol to Olefins,Dalian National Laboratory for Clean Energy,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,116023,China
3.Guangdong Provincial Key Laboratory of Mineral Physics and Materials,Guangzhou,510640,China

Zheng，Renji,Li，Jing,Zhu，Runliang,et al. Enhanced Cr(VI) reduction on natural chalcopyrite mineral modulated by degradation intermediates of RhB[J]. JOURNAL OF HAZARDOUS MATERIALS,2022,423.

Zheng，Renji.,Li，Jing.,Zhu，Runliang.,Wang，Ranhao.,Feng，Xuezhen.,...&Chen，Hong.(2022).Enhanced Cr(VI) reduction on natural chalcopyrite mineral modulated by degradation intermediates of RhB.JOURNAL OF HAZARDOUS MATERIALS,423.

Zheng，Renji,et al."Enhanced Cr(VI) reduction on natural chalcopyrite mineral modulated by degradation intermediates of RhB".JOURNAL OF HAZARDOUS MATERIALS 423(2022).