Article
Multidisciplinary Sciences
Xiao-Cheng Liu, Kun-Xiao Zhang, Jun-Sheng Song, Guan-Nan Zhou, Wen-Qiang Li, Rong-Rong Ding, Jing Wang, Xusheng Zheng, Gongming Wang, Yang Mu
Summary: Peroxidase-like catalysts are safe and low-cost alternatives for constructing sustainable cathodic heterogeneous electro-Fenton (CHEF) catalysts for water purification. However, understanding the structure-property relationship of enzyme-like catalysts is a pressing challenge for practical advancements in water and wastewater treatment using CHEF processes.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Chemistry, Multidisciplinary
Lele Cui, Mingming Sun, Zhenghua Zhang
Summary: This study proposes a tandem system of dual-cathode HEF and UV radiation to overcome the conflict between the optimal potentials of the two targeted reduction reactions in the catalyst-integrated cathode-based heterogeneous electro-Fenton (HEF) process. In the dual-cathode HEF unit, efficient H2O2 production, OH formation, and Fe(iii) electroreduction are achieved by the air-diffusion cathode (ADC) and the FeOCl-functionalized graphite felt (FeOCl/GF) at different operating current densities. The underutilized H2O2 in the HEF effluent is then reactivated in the UV module to eliminate the risk of oxidant residues and improve decontamination efficiency. The proposed HEF/UV tandem strategy offers a promising scheme for distributed wastewater treatment with high process efficiency and a green chemistry concept free from reagents and residual oxidants.
Article
Engineering, Environmental
Sajid Hussain, Eleonora Aneggi, Alessandro Trovarelli, Daniele Goi
Summary: A series of iron and copper-based catalysts were prepared and tested for ibuprofen treatment, with copper-based catalysts showing higher activity retention upon recycling. Iron-based catalysts exhibited initial high activity but decreased significantly after multiple cycles, while copper-based catalysts displayed higher stability.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Yongwei Jiang, Chao Xing, Yue Chen, Jing Shi, Sheng Wang
Summary: This study established an efficient strategy, the BFO-based UV-heterogeneous Fenton-like system, to eliminate TC pollution. The integrated photocatalytic oxidation system with the heterogeneous Fenton-like system demonstrated outstanding performance in TC disposal, with TC and TOC removal efficiencies reaching 100% and 74.92%, respectively. The promising TC disposal efficiency achieved by the integration between the BFO-based photocatalytic and heterogeneous Fenton-like system sheds light on applying BFO to control water pollution.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
J. Meijide, G. Lama, M. Pazos, M. A. Sanroman, P. S. M. Dunlop
Summary: Contaminants of emerging concern, including pharmaceuticals, are detected at low concentrations in surface waters, posing potential risks to aquatic life and the food chain. This review focuses on the removal of active pharmaceutical ingredients using ultraviolet processes, such as photo-Fenton, photocatalysis, and photoelectrocatalysis. However, there is limited research on scaling up the systems and testing their effectiveness in real water matrices.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Lele Cui, Qingqing Li, Bin Chen, Jian Qiu, Wenheng Jing, Xuehong Gu
Summary: Transition metal-based bimetallic spinel ferrites show excellent catalytic activity in heterogeneous Fenton catalysis, with Cu and Zn significantly promoting activity, Ni moderately promoting activity, and Mn and Co being inhibitory. Metal doping improves important properties like surface Fe(II) content, MO adsorption capacity, and electron transfer rate, leading to enhanced catalytic performance. The study elucidates the mechanism behind the enhanced activity and suggests the design of highly efficient heterogeneous catalysts.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Analytical
Negar TaheriAshtiani, Bita Ayati
Summary: In this study, the capability of glutaraldehyde cross-linked magnetic chitosan nanoparticles as a heterogeneous electro-Fenton catalyst was investigated. The results showed that the catalyst efficiently degraded the dye and removed COD and TOC. Furthermore, the catalyst exhibited good reusability and negligible iron leaching, meeting the Iranian wastewater discharge standard.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Review
Materials Science, Multidisciplinary
Ashitha Gopinath, Lakshmi Pisharody, Amishi Popat, P. V. Nidheesh
Summary: This review discusses the application of various materials as catalyst supports, including activated carbon, biochar, and fibers. It introduces the advantages and optimum conditions of different catalysts. Alginate-based catalysts are easy to prepare and exhibit high degradation efficiency. Zeolite-based catalysts are structurally stable and perform well in successive cycles. Fiber-based supports have both catalytic and cathodic functions due to their flexibility and conductivity. Graphene and carbon nanotubes have highly stable and conductive properties, promoting electron transfer.
CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE
(2022)
Article
Engineering, Environmental
Haiqiang Qi, Guifang Pan, Xuelin Shi, Zhirong Sun
Summary: In this study, a magnetic Cu-Fe-Fe3C@NDB microsphere catalyst was successfully prepared using chitosan as the carrier material. A hetero-EF system using Cu-Fe-Fe3C@NDB as the catalyst was constructed to efficiently degrade amoxicillin. The catalyst exhibited a wide pH application range, good stability, and low metal ion leaching. The remarkable catalytic performance and excellent stability can be attributed to the core-shell structure and uniform dispersion of nanoparticles on the catalyst surface.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Yunyi Li, Ying Yang, Jiamin Lei, Wen Liu, Meiping Tong, Jialiang Liang
Summary: The pathways of CBZ degradation in various advanced oxidation processes show high similarity, indicating that computational chemistry is a useful tool for pathway speculation. The molecular configuration of degradation intermediates plays a very important role in the degradation pathway.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Physical
Jiaxiang Liang, Yanping Hou, Jie Sun, Hongxiang Zhu, Han Pang, Jinhang Yang, Mi Wang, Jiangli Sun, Jianhua Xiong, Wenyu Huang, Zebin Yu, Shuangfei Wang
Summary: This work aims to explore the effect of optimal overpotential discrepancy between two-electron oxygen reduction reaction (OP2eORR) and metal reduction reaction (OPMRR) of the cathode on electro-Fenton (EF) system performance, and propose a strategy to eliminate overpotential discrepancy. The research demonstrates that cathodes with the same overpotential as the desired reaction exhibit superior EF performance.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Farzaneh Mahmoudi, Chang Min Park, Jae-Jin Shim
Summary: In this study, a novel catalyst SFO/TCT-10 was synthesized to address the low Fe(II) regeneration performance in conventional Fenton system. The synthesized catalyst showed excellent efficiency in degrading tetracycline under sono-Fenton process, and the catalytic mechanism and possible degradation pathways were proposed.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Chemistry, Physical
Zhuoying Cheng, Suyue Luo, Xiaojuan Li, Shuo Zhang, Tat Thang Nguyen, Minghui Guo, Xing Gao
Summary: A MnFe2O4/BC nanocomposite was synthesized using biochar as the carrier, and a heterogeneous Fenton-like process was applied to degrade methylene blue. The catalyst showed enhanced efficiency due to the synergistic effect of ultrasound and MnFe2O4/BC, improving degradation and mineralization levels of MB. This study suggests the potential of MnFe2O4/BC as a highly efficient and low-cost catalyst for ultrasound-assisted heterogeneous Fenton-like systems.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Environmental
Rui Li, David Speed, Dinusha Siriwardena, Sujan Fernando, Selma Mededovic Thagard, Thomas M. Holsen
Summary: This study compared the effectiveness of three advanced oxidation processes, Fenton, UV/Fenton, and UV/H2O2, for treating wastewater containing various components commonly found in semiconductor wastewater. The UV/Fenton process at an initial pH of 8.3 showed the best overall removal rate due to synergistic effects of various factors. The presence of co-contaminants in actual semiconductor industrial wastewater impacted the removal rates of pyrazole and DGA differently for each AOP.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Pengfei Yan, Haojian Wang, Mingwen Wang, Chengwen Chai, Yaping Ye
Summary: FeS2/MoS2 shows promising prospects for wastewater degradation with high degradation efficiency and a wide applicable pH range.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)