Article
Environmental Sciences
Jeong-In Hwang, Jang-Eok Kim
Summary: Through various Fenton reaction treatment systems combined with the use of ascorbic acid and hydrogen peroxide, both water and soil contaminated with endosulfan can be effectively remediated. The study showed that the mZVI/AA/H2O2 treatment method was able to remove a significant amount of ED within 24 hours, demonstrating its potential for remediation applications in both water and soil.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Physical
Yanyan Chen, Manlin Zhang, Tiantian Chen, Ganbing Zhang, Hui Xu, Hongwei Sun, Lizhi Zhang
Summary: A novel microreactor was constructed by anchoring nZVI on the rGO/PPy substrate within the microchannel, which catalyzed the Fenton-like reaction to remove >99% PNP within 50 seconds. The rGO/PPy composite substrate stabilized the nZVI, facilitated the decomposition of H2O2, and promoted the redox cycle of Fe(III)/Fe(II). The significant convection and highly-effective mass transfer within the microreactor also contributed to the ultrafast PNP removal. The rGO/PPy/nZVI microreactor shows promise for pollutant removal from water.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Environmental
Yufan Chen, Christopher J. Miller, Richard N. Collins, T. David Waite
Summary: The study found that iron oxychloride (FeOCl) is a poor Fenton catalyst compared to ferrihydrite (Fhy) at different pH levels. Evaluation of the catalytic performance of FeOCl requires consideration of factors such as target contaminant adsorption and excessive use of H2O2.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Environmental
Yufan Chen, Christopher J. Miller, T. David Waite
Summary: The study reveals that both HO center dot and [(FeO)-O-IV](2+)/ Fe-III(O2H) are concurrently produced on the surface in the acidic to near-neutral pH range, but HO center dot is the major oxidant responsible for substrate oxidation. As pH increases, the yield of both oxidants is inhibited by the decreasing availability of surface sites due to ferrihydrite particle aggregation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Hejun Ren, Fangru He, Shuai Liu, Tingting Li, Rui Zhou
Summary: Utilizing N,N-bis(carboxymethyl)glutamic acid (GLDA) in Fe(III) mediated Fenton-like oxidation significantly enhances the removal of organic pollutants at neutral pH. The acceleration of the Fe(III)/Fe(II) cycle caused by GLDA contributes to the increased degradation rate of pollutants, especially ciprofloxacin (CIP), in the GLDA/Fe(III)/H2O2 system. The complexation of GLDA with Fe(III) modifies the redox potential and enhances the generation of hydroxyl radicals, leading to efficient pollutant degradation.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Zenglu Qi, Ruiping Liu, Tista Prasai Joshi, Jianfeng Peng, Jiuhui Qu
Summary: The electrolysis-assisted nano zerovalent iron (E-nZVI) system demonstrated a high removal efficiency of Se(IV), exceeding the non-assisted nZVI system by 135%. Higher voltages did not significantly increase the reaction rate constant, indicating a complex relationship between parameters in the system.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Weiwei Guo, Tianqi Li, Qianru Chen, Junfeng Wan, Jie Zhang, Bo Wu, Yan Wang
Summary: The study found that the UV365/Fenton process had higher efficiency in gaseous toluene removal, with CO2 as the main product. The reduction of Fe3+ to Fe2+ with assistance of UV light played a key role in enhancing the removal efficiency of gaseous toluene.
Article
Environmental Sciences
Wei Wei, Dong Zhou, Li Feng, Xuhao Li, Lijun Hu, Huaili Zheng, Yinli Wang
Summary: The advanced oxidation technology of using ultrasound enhanced zero-valent iron/potassium persulfate can effectively remove carbamazepine antibiotic organic contamination wastewater, with ultrasound playing a key role in improving the efficiency of the reaction and expanding the pH range for CBZ degradation. The mechanism involves the generation of active radicals such as SO4·−, (OH)·, and O2(·−) which contribute to the removal of CBZ, with SO4·− playing a prominent role. The degradation process is promoted by the dissolution of iron powder, production of Fe2+ ions, and activation of S2O82- to produce sufficient SO4·− radicals, leading to the efficient degradation of CBZ.
Article
Chemistry, Multidisciplinary
Adolfo Henriquez, Pablo Salgado, Milenka Albornoz, Victoria Melin, Hector D. Mansilla, Lorena Cornejo-Ponce, David Contreras
Summary: The study evaluated the driving effect of different substitutions of 1,2-DHB on the Fenton reaction, showing that Fe+3 aquocomplex and [FeDHB]+ have significant effects on the degradation of rhodamine B.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Engineering, Chemical
Haifei Zhou, Jie Yang, Jiahui Xu, Bing Han, Xiaochun Zhu, Caiyun Jiang, Yuping Wang
Summary: FeOOH@Bi2MoO6 composites as visible light-driven photo-Fenton catalysts showed effective degradation of CIP, and provided a new idea to overcome issues in Fenton.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Chemistry, Applied
Yue Zhao, Yangxian Liu
Summary: This article investigates the adsorption of gaseous hydrogen sulfide using a cost-effective adsorbent prepared from rice straw biochar modified with spent Fenton-like reagent. The effects of various parameters and gas components on hydrogen sulfide adsorption, as well as the adsorption mechanism, were studied. The results show that the modification with spent Fenton-like reagent increases the active sites on the biochar surface but decreases the specific surface area of the adsorbent. The optimum calcination temperature for the adsorbent is 300 degrees C, and the maximum adsorption capacity for hydrogen sulfide is 1000.6 mg/g at 120 degrees C, surpassing similar adsorbents. The presence of sulfur dioxide, nitric oxide, or water vapor inhibits the desulfurization performance of the adsorbent to varying degrees. Copper oxide is identified as the key active substance for hydrogen sulfide adsorption, and copper sulfide, cuprous sulfide, and elemental sulfur are found to be the main products of hydrogen sulfide removal. This study provides new insights into the utilization of spent Fenton-like reagent and the development of cost-effective hydrogen sulfide adsorbents.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Environmental Sciences
Yan Shi, Shaoming Hong, Ruiping Li, Biying Luo, Huaiyong Zhu, Yingping Huang
Summary: In this study, goethite was found to be an efficient heterogeneous catalyst for the degradation of cefradine (CRD) via H2O2 activation under different conditions involving pH and visible light irradiation. The CRD removal rate was highly dependent on pH and visible light irradiation. Mechanism investigation revealed the generation of center dot OH and =[FeIVO]2+ oxidants during the reaction process, with center dot OH being the major oxidant at acidic pH and =[FeIVO]2+ being more likely to be formed with photoassistance at near-neutral pH. UPLC-MS/MS analysis suggested that the degradation of CRD likely involved hydrogen atom abstraction, thioether and olefin oxidation, as well as FeIII-catalyzed hydrolytic cleavage of the beta-lactam ring.
Article
Engineering, Environmental
Peng Fan, Xiaohong Guan, Guangfeng Wei, Lina Li
Summary: By simply closing the reactor, the electron efficiency and specific removal capacity of ZVI for four metal(loid)s increased significantly, while the removal kinetics was slightly affected. The consumption-redissolution process of DO and corrosion of ZVI were decelerated under closed condition, leading to improved selectivity in metal(loid)s removal.
WATER ENVIRONMENT RESEARCH
(2021)
Article
Environmental Sciences
Fangru He, Hejun Ren, Tingting Li, Shuai Liu, Rui Zhou
Summary: This study demonstrated a novel GLDA modified visible light assisted Fenton-like system for effective removal of ciprofloxacin. Hydroxyl radical was found to be the dominant species for ciprofloxacin degradation in this system.
Article
Engineering, Chemical
Chen Wang, Zewei Hu, Wei Lou, Mingjie Huang, Wei Xiang, Tao Zhou, Juan Mao, Xiaohui Wu
Summary: This study has shown that the Fenton fluidized bed (FFB) technology can successfully immobilize As ions on IC carriers, while also crystallizing ferric and mineralizing organic pollutants. The immobilization of As(V) on the IC carriers occurs rapidly through surface favorable bidentate complexion, while the removal of As(III) through adsorption is slow. The addition of Fe3+ inhibits As(V) immobilization but promotes oxidative crystallization of Fe(II) and As(III). As a result, efficient co-crystallization of As(V)/Fe(III) is achieved.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
I. A. Katsoyiannis, A. I. Zouboulis
DESALINATION AND WATER TREATMENT
(2013)
Article
Engineering, Chemical
Ioannis A. Katsoyiannis, Manasis Mitrakas, Anastasios I. Zouboulis
DESALINATION AND WATER TREATMENT
(2015)
Article
Engineering, Environmental
Ioannis A. Katsoyiannis, Thomas Ruettimann, Stephan J. Hug
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2008)
Letter
Engineering, Environmental
Ioannis A. Katsoyiannis, Thomas Ruettimann, Stephan I. Hug
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2009)
Article
Engineering, Environmental
Ioannis A. Katsoyiannis, Silvio Canonica, Urs von Gunten
Review
Environmental Sciences
Kianoush Khosravi-Darani, Yasir Rehman, Ioannis A. Katsoyiannis, Evgenios Kokkinos, Anastasios I. Zouboulis
Summary: Arsenic poisoning is a major health threat to humans, with hotspots detected worldwide. Asia has the highest percentage of significantly contaminated sites. Arsenic enters ecosystems through natural or anthropogenic activities, accumulating in food and water sources. This review focuses on identifying areas with elevated arsenic concentrations and discussing treatment technologies for contaminated water to reduce population exposure.
Article
Environmental Sciences
Ioannis A. Katsoyiannis, Anastasios I. Zouboulis, Manassis Mitrakas, Hans Werner Althoff, Hartmut Bartel
FRESENIUS ENVIRONMENTAL BULLETIN
(2013)
