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Simultaneous Cu(II)-EDTA decomplexation and Cu(II) recovery using integrated contact-electro-catalysis and capacitive deionization from electroplating wastewater.
Shen, Xiaoyan; Wang, Shiyong; Zhao, Lin; Song, Haoran; Li, Wei; Li, Changping; Lv, Sihao; Wang, Gang.
Afiliación
  • Shen X; School of Environment and Civil Engineering, Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523106, Guangdong, China.
  • Wang S; School of Environment and Civil Engineering, Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523106, Guangdong, China.
  • Zhao L; College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
  • Song H; Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China.
  • Li W; School of Environment and Civil Engineering, Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523106, Guangdong, China.
  • Li C; School of Environment and Civil Engineering, Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523106, Guangdong, China.
  • Lv S; School of Environment and Civil Engineering, Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523106, Guangdong, China.
  • Wang G; School of Environment and Civil Engineering, Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523106, Guangdong, China; Guangdong Provincial Key Laboratory of Intelligent Disaster Prevention and Emergency Technologies for Urban Lifeline Engineering, Dong
J Hazard Mater ; 472: 134548, 2024 Jul 05.
Article en En | MEDLINE | ID: mdl-38728866
ABSTRACT
The complex of heavy metals and organic acids leads to high difficulty in heavy metals separation by traditional technologies. Meanwhile, alkaline precipitation commonly used in industry causes the great consumption of resources and extra pollution. Herein, the effective decomplexation of Cu(Ⅱ)-EDTA and synchronous recycling of Cu2+ were realized by contact-electro-catalysis (CEC) coupled with capacitive deionization (CDI) innovatively. In particular, fluorinated ethylene propylene (FEP) as dielectric powders could generate reactive oxygen species under ultrasonic stimulation, realizing continuous deaminization and decarboxylation of Cu(Ⅱ)-EDTA and accelerating the totally breakage of Cu-O and Cu-N bonds. Additionally, the degradation pathway and intermediates evolution of Cu(Ⅱ)-EDTA were investigated using various characterization methods. It was confirmed that decarboxylation predominantly governed the degradation process of Cu(Ⅱ)-EDTA in CEC. During the course of treatment, the degradation ratio of Cu(Ⅱ)-EDTA reached 86.4 % within 150 min. Impressively, this strategy had satisfactory applicability to other metal combinations and excellent cycle stability. Subsequently, the released Cu ions were captured by CuSe cathode electrode through CDI. This research elucidated the degradation mechanism of persistent organic pollutant during CEC, and provided a novel approach for efficiently treating industrial wastewater containing metal complexes and advancing the exploitation and utilization of new technologies for metal recovery.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Hazard Mater Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Hazard Mater Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos