Journal of Environmental Sciences
·
2015
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IF 2.002
Siwei Peng,Weijun Zhang,Jie He,Xiaofang Yang,Dongsheng Wang,Guisheng Zeng
Fenton oxidation is generally inhibited in the presence of a high concentration of chloride ions. This study investigated the feasibility of using benzoquinone (BQ) and hydroxylamine hydrochloride (HA) as Fenton enhancers for the removal of glycerin from saline water under ambient temperature by accelerating the ferric system. It was found that organics removal was not obviously affected by chloride ions of low concentration (less than 0.1 mol/L), while the mineralization rate was strongly inhibited in the presence of a large amount of chloride ions. In addition, ferric hydrolysis–precipitation was significantly alleviated in the presence of HA and BQ, and HA was more effective in reducing ferric ions into ferrous ions than HA, while the H 2 O 2 decomposition rate was higher in the BQ-Fenton system. Electron spin resonance analysis revealed that OH production was reduced in high salinity conditions, while it was enhanced after the addition of HA and BQ (especially HA). This study provided a possible solution to control and alleviate the inhibitory effect of chloride ions on the Fenton process for organics removal.
研究领域:
环境科学
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化学工程
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DOI
高影响因子
Separations
·
2025
·Vol. 12
·期 4
·101
·
IF 2.7
Jiren Yuan,Dongao Xie,Dan Li,Feigao Xu
In recent years, the rapid development of industry has led to the discharge of large quantities of pollutants, including harmful dyes, into water sources, thereby posing potential threats to human health and the environment. FeOCl and biochar have their own shortcomings as a mediator in the heterogeneous Fenton process. To make both materials useful, FeOCl supported on bamboo biochar (FeOCl/BC) was prepared by calcination using FeCl3·6H2O and bamboo powder as raw materials, and the composite’s catalytic activities were explored with acid orange II (AO-II) as the target pollutant. The degradation efficiency of FeOCl/BC composites on AO-II was determined by testing the mass ratio of FeOCl and BC, initial pH, temperature, H2O2concentration, catalyst addition, addition of coexisting inorganic anions, and natural organic matter. The addition of biochar to FeOCl increased the activation of H2O2to generate •OH for the removal of AO-II and accelerated the cycle of Fe3+/Fe2+. The removal rate of AO-II by the Fe1C0.2composite was 97.1% when the mass ratio of FeOCl and BC was 1:0.2 (Fe1C0.2), which was higher than that of the pure components (FeOCl or BC) at pH = 6.1. Moreover, after five reuses, the Fe1C0.2composite still showed high degradation activity for AO-II, with 83.3% degradation and low activity loss. The capture experiments on the active material showed that the removal of AO-II by the Fe1C0.2composite was mainly dominated by •OH; however, •O2−andh+played minor roles. The synthesized Fe1C0.2composite could be applied for organic contaminants such as AO-II with high removal efficiency.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2023
·Vol. 33
·期 10
·3237-3246
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IF 4
Zhu Xiaokang,Wang Xiuwu,Zhou Guiyang,Yin Hong,Qi Dongming,Deng Hangjun,Chen Tao
The preparation of polymer-metal complex is an effective way to achieve the bifunctionality of polymer and metal. In this study, temperature-sensitive polymer was synthesized from triethylene glycol methyl ether methacrylate (MEO 2 MA) and methacrylic acid N-hydroxysuccinimide ester (NMS) monomers via reversible addition-fragmentation chain transfer (RAFT) polymerization. 6-Aminohexanoic acid was introduced into the temperature-sensitive polymer using an activated ester strategy to obtain branched carboxyl-containing polymers. The carboxyl group in the polymer was coordinated with Fe(III), resulting in temperature-sensitive polymer-based iron complexes. The obtained iron complexes were used as homogeneous catalysts in the Fenton oxidation. Where, 97% and 96% decolorization of rhodamine B (RhB) and methylene blue (MB) could be achieved within 2 h for P(COOH 10 - co -MEO 2 MA 41 )-Fe 3+ , and the catalytic activities increased with the increase of the COOH content of polymer. In addition, the recycling of the catalyst can be achieved by the heating-centrifugal precipitation method using the temperature-sensitive nature of the polymer. Graphical Abstract
研究领域:
材料科学
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环境化学
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高分子化学
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产品关联
DOI
高影响因子
Water Cycle
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2022
·
IF 0
Wen-Min Wang,Xinzheng Li,Xin Du,Qian-Yuan Wu
Azo dyes, which are widely used in the textile industry, are typical toxic and refractory pollutants in wastewater. Heterogeneous Fenton oxidation is effective in degrading organic compounds; however, it may induce Fe-leaching. Therefore, it is necessary to find efficient, cheap, and natural iron mineral catalysts for heterogeneous Fenton oxidation. This work aimed to investigate the removal of the representative azo dye reactive yellow 3 (RY3) by iron mineral/H 2 O 2 oxidation. Compared with hematite and pyrite, magnetite showed superior RY3 degradation efficiency via heterogeneous Fenton oxidation. The optimum parameters for degradation of 50 mg/L RY3 by magnetite/H 2 O 2 were 0.2 g/L magnetite, 0.5 mM H 2 O 2 , and pH 3.5. Under the optimum parameters, RY3 was almost completely degraded within 40 min. Through free radical trapping experiments, hydroxyl radicals (•OH) were identified as the dominant reactive radical species for RY3 degradation by magnetite/H 2 O 2 oxidation.
研究领域:
环境科学
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化学工程
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材料科学
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DOI
FIBERS AND POLYMERS
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2022
·Vol. 23
·期 10
·2809-2819
·
IF 2.347
Yang Yuhui,Chen Hongbin,Zhang Ruquan,Huang Jingjing,Bai Zhikui,Xiao Shili
The ferric ions sludge produced during pollutants degradation was an obstacle for large scale application of Fenton oxidation technology. Herein, we reported a facile method using 2,2,6,6-tetramethylpiperidine-1-oxygen radical (TEMPO)-oxidized cotton fabric as a substrate for anchoring Fe(II) ions to produce Fe(II)-anchored cotton fabric. The formation of Fe(II)-anchored cotton fabric was confirmed using EDS analysis and FTIR measurement. Bath experiments indicated that Fe(II)-anchored cotton fabric could Fenton oxidize rhodamine B (RhB) dye in a high efficient rate (95.9 %) within 60 min without second pollution. Fe(II)-anchored cotton could be reused without any physical/chemical treatment and its decolorization efficiency was retained at 89.9 % even after the third cycle. Moreover, the decolorization behavior of Fe(II)-anchored cotton fabric for the RhB solution was affected by H 2 O 2 dosage, Fe(II) ion content, and inorganic salts. Kinetic study indicated that the RhB decolorization process fits a pseudo-first order well and the sorption isotherm assessment revealed that the reactive sorption of RhB dye on Fe(II)-anchored cotton fabric fits the Freundlich model.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
Fuliu Yang,Yong Chen,Xiaochun Wu,Yufeng Da,Peipei Xiong,Chenxi Wu,Yue Du,Yuhang Shi,Junfeng Zhao,Yong Liu
Coagulation–Fenton oxidation stands as a prevalent method for organic pollutant removal from MBR effluent in landfill leachate. However, its dependence on intricate coagulant preparation and hazardous H 2 O 2 handling presents challenges in logistics. Herein, a novel Al 0 /C–N, Cl composite was developed via high-energy ball milling and high-temperature sintering, which facilitates in situ generation of H 2 O 2 and aluminum salt coagulant upon stirring in oxygen-containing aqueous solutions. Under conditions of 2 g/L Al 0 /C–N, Cl and initial pH 9, H 2 O 2 production achieved 459 mg/L within 1 h, yielding an Al 3+ /H 2 O 2 bifunctional reagent. Subsequent coagulation in MBR effluent and Fenton oxidation achieved removal efficiencies of 85.5 %, 76.4 %, and 99.3 % for UV 254 , total organic carbon, and chromaticity, respectively. The efficient degradation of refractory fulvic-like substances was obtained from this novel “coagulation–Fenton” hybrid process without additional coagulants and H 2 O 2 . These results illustrated that the hybrid process is a promising and efficient technology for the advanced treatment of landfill leachate.
研究领域:
环境工程
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废水处理
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产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2024
·
IF 3.8
Jing Zhang,Xiaolong Yao,Yue Zhao,Rengui Li,Xiaofei Chen,Haibo Jin,Huangzhao Wei,Lei Ma,Zhao Mu,Xiaowei Liu
Wastewater treatment, especially the efficient degradation of contaminants such as m-cresol, remains a pivotal challenge. This study investigates the application of artificial neural networks (ANN) in predicting total organic carbon (TOC) removal rates from m-cresol-contaminated wastewater by using the ultraviolet (UV)-Fenton oxidation process. Six key variables, namely, Fe2+ dosage, H2O2 dosage, catalyst quantity, reaction time, pH, and substrate concentration, were employed as inputs to the ANN model. Leveraging this multivariable input and a comprehensive data set, the ANN model projected a maximum TOC removal rate of 87.12%, validated by an efficiency of 86.26% achieved through experiments under the derived optimal conditions: Fe2+ dosage at 16.09 mg/L, H2O2 dosage at 1.40 mg/L, catalyst quantity at 0.11 g/L, reaction time of 29.80 min, initial pH of 3.66, and substrate concentration of 50 mg/L. Comparative analysis with other machine learning algorithms further revealed that the ANN model notably outperformed linear regression, support vector regression, and random forest in terms of precision. This work paves the way for resource-optimized experimental designs, fostering real-time wastewater monitoring and refining advanced oxidation process proficiency in industrial applications.
研究领域:
环境科学
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人工智能
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化学工程
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产品关联
DOI
高影响因子
Desalination and Water Treatment
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2024
·
IF 1
Jianguang Li,Jinong Xu,Yuechao Wu,Chonghe Li,Xiaohua Zheng,Kaifeng Zhou,Jinquan Chen,Yulin Wang,Luming Wang,Yifeng Lv,Zhongming Xu,Huiming Zeng,Feng Lin,Miaosen Yang,Liang Lv
ABSTRACT In this paper, iron–carbon micro-electrolysis as well as Fenton oxidation are adopted to degrade the organism in wastewater containing magnesium. And then the generated Fe 3+ was used to coprecipitate with Mg 2+ in the wastewater to prepare layered double hydroxides (LDHs). The wastewater achieves a 73% decreasement in chemical oxygen demand (COD) under the optimum condition of pH = 2 and iron–carbon ratio = 1:3 through iron–carbon micro-electrolysis while a 77% decreasement in COD is achieved under the optimum condition of pH = 3 with 6 mL/L H 2 O 2 and 2 g/L FeSO 4 ·7H 2 O via Fenton oxidation. After treatment, the wastewater containing magnesium with COD of 248 mg/L and removal efficiency of 93% meets the sewage drainage standard. Furthermore, the efficient resourceful utilization of magnesium can be achieved through synthesis of magnesium iron layered double hydroxides (MgFeCl-LDH).
研究领域:
环境科学
·
化学工程
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DOI
高影响因子
WATER RESEARCH
·
2025
·
IF 12.4
Linjun Wu,Huan Li,Yanyue Gu,Zhiqiang Shen,Yuexi Zhou,Jiane Zuo
This research introduces an innovative full-process treatment technology that integrates dual-stage gas permeable membranes (GPM) and humic acid (HA) recovery to enhance Fenton oxidation of landfill leachate (LFL). In terms of full-process performance, this integrated approach (LFL-GPM-HA (Fenton)) synergistically combines LFL concentration, ammonia recovery, HA recovery, purified water reclamation, and efficient Fenton oxidation, thereby achieving holistic minimization, detoxification, and resource recovery of LFL. Specifically, under the conditions of low-intensity aeration and a temperature gradient of 65–55–25 °C, the GPM achieved an ammonia recovery rate exceeding 96 %, while the LFL was concentrated by a factor of 4.72 within 12 h. During HA recovery at pH 2, the HA yield from the concentrated LFL reached 3.68 g/L, representing an 88.72 % increase compared to the raw LFL. Due to the significant consumption of bicarbonate alkalinity during the GPM process, the required dosage of H₂SO₄ per gram of HA recovered was reduced by 86.72 %. Under different dimensionless oxidant dosages, the LFL-GPM-HA (Fenton) demonstrated a significant improvement in COD removal efficiency compared to standalone Fenton oxidation. In terms of dissolved organic matter (DOM) molecular-level transformation, ESI FT-ICR-MS analysis showed a significant enhancement in the removal of CHOS and CHONS in LFL-GPM-HA (Fenton), with a concurrent reduction in the produced sulfurous byproducts. Additionally, the LFL-GPM-HA (Fenton) notably increased the frequency of decarboxylation, desulfurization, and dealkylation reactions. In terms of operational stability and economic feasibility, this integrated system demonstrates excellent long-term stability and robust membrane fouling-cleaning recovery properties, achieving LFL treatment at a cost of approximately 12.142 $/m³, which is significantly more cost-effective than conventional full-process advanced treatment technologies (20–30 $/m³). In conclusion, the findings offer a pathway for developing more efficient and cost-effective strategies for LFL management.
研究领域:
环境科学
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废水处理
·
分子生物学
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Wenjuan Zou,Jintao Dong,Mengxia Ji,Bin Wang,Yingjie Li,Sheng Yin,Huaming Li,Jiexiang Xia
Though heterogeneous Fenton-like reactions possess various characteristics such as a wide application range and mild reaction conditions, their reactivity is currently restricted by unsatisfactory H2O2 decomposition efficiency and low pH adaptation. Hence, Bi25FeO40 nanoparticles prepared via the mechanical ball-milling method (Bi25FeO40-B) with extensive oxygen vacancies possess high reactive oxygen species production performance by enhancing the H2O2 decomposition for tetracycline hydrochloride oxidation and Cr(VI) reduction. H2O2 decomposition efficiency can reach 55.3% in the presence of the Bi25FeO40-B catalyst, which is much higher than that of Bi25FeO40 prepared by the traditional hydrothermal method (23.8%). The Bi25FeO40-B/H2O2 heterogeneous Fenton system demonstrates efficient performance for simultaneous oxidation of tetracycline hydrochloride (TCH) and reduction of Cr(VI). It is capable of removing 75.2% of 50 mg/L TCH and 93.0% of 20 mg/L Cr(VI) at pHinitial = 7, respectively. Abundant oxygen vacancies on the surface of Bi25FeO40-B nanoparticles due to the nanometer size effect can accelerate the decomposition of H2O2 to promote the formation of reactive oxygen species for removing the target organic pollutants and reduction of Cr(VI). Consequently, this work provides a strategy for the preparation of oxygen-rich Bi25FeO40 catalysts for efficient degradation of contaminants and depicts the bright future of Fe-based metal oxides with oxygen vacancies on H2O2 activation in Fenton-like reactions.
研究领域:
环境科学
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材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2025
·
IF 8
Haijun Chang,Yu Huang,Yuanwei Shi,Yu Hu,Wenbin Zhou
The research aimed to elucidate how purslane extract (PE) inhibited pork myofibrillar proteins (MPs) oxidation and modulated the physicochemical properties in the Fenton oxidation system. This study employed UHPLC-QE-Orbitrap-MS/MS to comprehensively analyze the PE constituents and evaluate their antioxidant properties. Furthermore, the effects of various PE concentrations (0.05, 0.10, 0.15, 0.20, and 0.40 mg/mL) on the structural characteristics of pork MPs in a hydroxyl radical oxidation system were evaluated. The findings indicated that PE was rich in phenolics, with luteolin, kaempferol, genistein, rutin, diosmetin, morin, kaempferol-3-O-rutinoside, isoquercitrin, and isorhamnetin-3-O-neohesperidoside being the nine most prevalent compounds. These compounds contributed to the extract's strong free radical scavenging activity. Experimental results demonstrated that adding 0.20 mg/mL PE significantly reduced the carbonyl content compared with oxidized MPs while increasing total thiol, free thiol, and free amino group levels ( P < 0.05). The protective effect of PE on MP amino acid side chains was superior to that of Butylated hydroxyanisole (BHA). Moreover, PE addition protected the secondary structure of MPs and minimized the α-helix loss caused by oxidation. In addition, PE decreased the intrinsic fluorescence intensity of MPs, enhanced their surface hydrophobicity, and reduced their solubility. SDS-PAGE results indicated that oxidation and PE addition induced MP aggregation, with most of it being reversible. These findings support the potential of PE as a natural antioxidant in meat products and offer a theoretical basis for its functional applications in meat processing.
研究领域:
食品科学
·
生物化学
·
食品化学
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抗氧化研究
·
蛋白质科学
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天然产物
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氧化应激
·
肉类加工
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）