Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Zhiquan Xiang,Chunkai Huang,Jincan Huang,Yan Yan,Guangbing Liu,Xuemin Yu,Weijing Liu,Haijin Cao,Aozhan Liu
Herein, the synergistic removal of Sb(Ⅲ) and Sb(Ⅴ) from wastewater by polymeric ferric sulfate (PFS) and the oxidation process were investigated. The results showed that PFS exhibited superior performance on Sb(Ⅲ) removal in terms of coagulant dosage, applied pH, and anti-interference properties than Sb(V) removal. For the Sb liquid in pure water matrix (Sb=1000 μg/L), when the dose was 60 mg/L and the final pH was 5.0, the independent removal of Sb(Ⅲ) and Sb(V) was 95% and 90%, respectively. Meanwhile, Sb(Ⅲ) removal in the PFS coagulation system remained stable within a wider pH range (pH=3–9). Sb(Ⅲ) could be preferentially removed in the solution column and had an inhibitory effect on the adsorption of Sb(V). Sb(Ⅲ) was also partially oxidized to Sb (V) during the coagulation process, which was influenced by the coagulant dosage and the solution pH. The results of the actual printing and dyeing wastewater (PDW) treatment indicated that the pre-reduction of Sb(V) to Sb(Ⅲ) could significantly increase the total Sb removal from 72.0% to 97.5%. The characterization results, such as Zeta potential and x-ray photoelectron spectroscopy (XPS), indicated that the Sb(Ⅲ) removal by PFS was achieved mainly through chemical adsorption. While the Sb(V) removal was realized by both chemical adsorption and electrostatic adsorption, the electrostatic adsorption contributed more than the chemical adsorption. This study provides a new idea for understanding the synergistic removal of Sb(Ⅲ) and Sb(V) using PFS in PDW advanced treatment.
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
ACS Omega
·
2022
·
IF 4.132
Xuhe Zhan,Feiyu Gao,Qianyu Zhuang,Yani Zhang,Jie Dang
In this work, a two-dimensional porous structure of a V-doped NiO film with excellent electrochromic properties on an ITO substrate was synthesized by a hydrothermal method. The influence of V5+ ions on the NiO film was explored by adjusting the amount of V doping, including refining the crystal grains, increasing the specific surface area of the film, and accelerating the diffusion rate of OH– in the film. Compared with the undoped NiO film, a 3 atom % V-doped NiO film comes out with superior electrochromic properties with large optical transmittance modulation (81.9% at 600 nm), fast response times (1.2 and 0.9 s), and excellent cycle stability (90.6%). This work creates innovation direction in the field of intelligent energy-saving window materials with high electrochromic properties.
研究领域:
材料科学
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能源材料
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纳米技术
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DOI
PubMed
高影响因子
WATER ENVIRONMENT RESEARCH
·
2016
·Vol. 88
·期 12
·2219-2227
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IF 0.659
Xuelong Sha,Wei Ma,Fanqing Meng,Ren Wang,Tian Fuping,Linsen Wei
In this study, we explored an effective and low-cost catalyst and its adsorption capacity and catalytic capacity for Methyl Orange Fenton oxidation degradation were investigated. The catalyst was directly prepared by reuse of magnetic iron oxide (Fe 3 O 4 ) after saturated adsorption of vanadium (V) from waste SCR (Selective Catalytic Reduction) catalyst. The obtained catalyst was characterized by FTIR, XPS and the results showed that vanadium (V) adsorption process of Fe 3 O 4 nanoparticles was non-redox reaction. The effects of pH, adsorption kinetics and equilibrium isotherms of adsorption were assessed. Adsorption of vanadium (V) ions by Fe 3 O 4 nanoparticles could be well described by the Sips isotherm model which controlled by the mixed surface reaction and diffusion (MSRDC) adsorption kinetic model. The results show that vanadium (V) was mainly adsorbed on external surface of the Fe 3 O 4 nanoparticles. The separation-recovering tungsten (VI) and vanadium (V) from waste SCR catalyst alkaline solution through pH adjustment was also investigated in this study. The results obtained from the experiments indicated that tungsten (VI) was selectively adsorbed from vanadium (V)/tungsten (VI) mixed solution in certain acidic condition by Fe 3 O 4 nanoparticle to realize their recovery. Tungsten (V) with some impurity can be obtained by releasing from adsorbent, which can be confirmed by ICP-AES. The Methyl Orange degradation catalytic performance illustrated that the catalyst could improve Fenton reaction effectively at pH = 3.0 compare to Fe 3 O 4 nanoparticles alone. Therefore, Fe 3 O 4 nanoparticle adsorbed vanadium (V) has a potential to be employed as a heterogeneous Fenton-like catalyst in the present contribution, and its catalytic activity was mainly evaluated in terms of the decoloration efficiency of Methyl Orange.
研究领域:
环境科学
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催化材料
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废水处理
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DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
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2022
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IF 10.753
Kaiyue Song,Chengjun Zhang,Jun Shan,Wenting Wang,Huiji Liu,Mengchang He
Simulating the adsorption behavior of Sb(V) on goethite is of great significance for predicting the mobility of Sb(V) in soil. However, there is still a lack of charge distribution and multisite surface complexation (CD-MUSIC) models that conform to the actual adsorption mechanism. Therefore, our research combined the previous EXAFS results with the SCMs and established two CD-MUSIC models (Model I, which introduced bidentate binuclear and bidentate mononuclear complexes, and Model II, which introduced bidentate mononuclear and monodentate mononuclear complexes). It is also one of the rare cases that bidentate edge- and corner-sharing adsorption complexes have been distinguished by introducing different amounts of H + . The results showed that Model I was more suitable for predicting the adsorption behavior of Sb(V) on the goethite surface than Model II. However, at low pH and high Sb(V) loading, the presence of the monodentate complex ≡FeOHSb(OH) 5 0.5- was possible due to the fast and slow two-step mechanism. Using the optimized CD-MUSIC model parameters, the contribution of surface species to the equilibrium adsorption under different conditions was determined. In the adsorption edge and adsorption isotherm simulation process, the edge-sharing bidentate mononuclear complex ≡(FeO) 2 H 2 Sb(OH) 4 was always the most important product, which was consistent with the results of extended X-ray absorption fine structure (EXAFS) analysis. The applicability of the model parameters was verified by predicting the competitive adsorption between PO 4 3− and Sb(V). The CD-MUSIC model established in the present study could be a useful tool for evaluating the equilibrium distribution behavior and environmental risk of Sb(V) in different types of soils.
研究领域:
环境科学
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土壤学
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DOI
PubMed
高影响因子
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
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2024
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IF 4.2
Yao Yu,Xinru Li,Yiping Hou,Min Wei,Yiyun Qian,Yuxin Zhou,Min Yin,Yanqin Jiang,Pingping Song
Gray mold , caused by Botrytis cinerea is an intractable fungal disease that causes extensive damage to agricultural products. In the search for novel antifungal active ingredients, we discovered a linear pyranocoumarin Pd-D-V was effective against B. cinerea in both in vitro and in vivo assays. Furthermore, this study investigated the effects of Ca 2+ and the Ca 2+ -calcineurin signaling pathway on its antifungal activity against B. cinerea . The results indicated that Pd-D-V reduced the concentration of Ca 2+ in the mycelia of B. cinerea ; CaCl 2 , the Ca 2+ channel blocker verapamil , or the calcineurin inhibitor cyclosporin A could affect the sensitivity of Pd-D-V against B. cinerea ; the expression of genes ( Bccch1, Bcmid1, BccnA, Bccnb1, Bcpmc1, and Bcpmr1 ) of the Ca 2+ -calcineurin signaling pathway decreased after Pd-D-V treatment. In summary, Pd-D-V is compound for developing fungicides against B. cinerea . Pd-D-V can reduce intracellular Ca 2+ concentration and disturb Ca 2+ homeostasis . The Ca 2+ -calcineurin signaling pathway is important in the antifungal activity of Pd-D-V against B. cinerea .
研究领域:
植物病理学
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分子生物学
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真菌学
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DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2021
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IF 10.588
Heng Zhang,Mengfan Luo,Peng Zhou,Yang Liu,Ye Du,Chuanshu He,Gang Yao,Bo Lai
Recently, the enhancing role of hydrogen peroxide (H 2 O 2 ), a self-decay product of ferrate (Fe(VI)), on Fe(VI) reactivity has received increasing attention. In this study, we found that calcium peroxide (CaO 2 ) as a slow-releasing reagent of H 2 O 2 could also enhance the Fe(VI) performance for removing sulfamethoxazole (SMX). Compared with sole Fe(VI), sole CaO 2 and Fe(VI)-H 2 O 2 systems, the Fe(VI)-CaO 2 system showed higher reactivity to remove SMX. The radical scavenger and chemical probe test results indicated that the better oxidation performance of Fe(VI)-CaO 2 system than Fe(VI) alone was ascribed to the generation of Fe(Ⅳ) and Fe(Ⅴ) rather than • OH. In addition, the performance of Fe(VI)-CaO 2 system for degradation of contaminants was also superior to Fe(VI)-Na 2 SO 3 , Fe(VI)-NaHSO 3 and Fe(VI)-Na 2 S 2 O 3 systems under the same experimental conditions. Moreover, the effects of critical operating parameters, inorganic anions, inorganic cations, and humic acid on the degradation of SMX by Fe(VI)-CaO 2 system were revealed. The Fe(VI)-CaO 2 system exhibited good applicability in authentic water. Finally, the underlying degradation intermediates of SMX by Fe(VI)-CaO 2 system and their toxicity were confirmed. In conclusion, this study provides a new strategy for enhancing the oxidation capacity of Fe(VI) and comprehensively reveals the oxidation mechanism.
研究领域:
环境科学
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水处理技术
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DOI
PubMed
高影响因子
CURRENT MICROBIOLOGY
·
2014
·Vol. 70
·期 1
·27-34
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IF 1.359
Wang Shuzhi,Pan Xiangliang,Zhang Daoyong
The
knowledge of the effects of Sb(V) on the physiological characteristics of cyanobacteria was still limited. In the present study, responses of photosystem I and II (PSI and PSII), cyclic electron flow (CEF), and interphotosystem electron transport of Microcystis aeruginosa to 5–100 mg/l Sb(V) were synchronously measured using the Dual-PAM-100. 5 mg/l Sb (V) significantly inhibited PSII activity, but had no significant effects on PSI activity. At higher concentrations of Sb(V), the quantum yield and electron transport of PSI were less affected compared to PSII. The ratio of Y (II)/ Y (I) significantly decreased with increasing Sb(V) concentration. It decreased from 0.7 for control to 0.4 for 100 mg/l Sb(V)-treated cells, indicating that the change of the distribution of quantum yields between two photosystems and more serious inhibition of PSII under stress of Sb(V) compared to PSI. CEF was activated associated with the inhibition of linear electron flow after exposure to Sb(V). The contribution of Y (CEF) to the quantum yield and activity of PSI increased with increasing Sb(V) concentrations. The cyclic electron transport rate made a significant contribution to electron transport rate of PSI, especially at high Sb(V) concentration (100 mg/l) and high illumination (above 555 μmol photons/m 2 /s). The stimulation of CEF was essential for the higher tolerance of PSI than PSII to Sb(V).
研究领域:
植物学
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环境科学
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DOI
PubMed
高影响因子
Catalysts
·
2022
·Vol. 12
·期 9
·998
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IF 4.501
Mengfan Niu,Liyun Cao,Qianqian Liu,Xiaoyi Li,Qian Chen,Dinghan Liu,Wenbin Li,Jianfeng Huang,Liangliang Feng
Exploring low-cost and highly active, cost-effective cocatalysts is of great significance to improve the hydrogen evolution performance of semiconductor photocatalysts. Herein, a novel ultrasmall V-doped NiP2nanoparticle, as an efficient cocatalyst, is reported to largely upgrade the photocatalytic hydrogen evolution reaction (HER) of g-C3N4nanosheets under visible-light irradiation. Experimental results demonstrate that V-NiP2cocatalyst can enhance the visible-light absorption ability, facilitate the separation of photo-generated electron-hole pairs and boost the transfer ability of electrons of g-C3N4. Moreover, the V-NiP2/g-C3N4hybrid exhibits prominent photocatalytic HER activity 17 times higher than the pristine g-C3N4counterpart, even outperforming the 1 wt.% platinum-loaded g-C3N4. This work displays that noble-metal-free V-NiP2cocatalyst can serve as a promising and efficient alternative to Pt for high-efficiency photocatalytic H2evolution.Keywords:g-C3N4;cocatalyst;V-NiP2;photocatalyst;hydrogen evolution reaction
研究领域:
材料科学
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催化化学
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DOI
高影响因子
Journal of Materials Chemistry B
·
2025
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IF 5.7
Ming-Yue Gao,Meng Wang,Yong-Tao Wang,Zhi-Ling Zhang
Nanozymes, the nanomaterials with enzyme-like characteristics which exhibit lower cost, easier synthesis and functionalization, better stability compared with natural enzymes, have been widely developed for biosensing, disease therapy and environmental governance. However, the lack of catalytic efficiency of nanozymes compared to natural enzymes makes it difficult to completely replace natural enzymes to achieve higher sensitivity and lower detection limit in biosensing. Herein, magnetism-controlled technology was used to form nanozyme array consisted of stacked Fe3O4/Au NPs at the bottom of the microchannel as a spatially confined microreactor for the catalytic reaction. By enhancing the mass transfer process of substrate towards nanozyme which was mediated by the corresponding V-structure, a higher local concentration of substrate and more efficient utilization of active sites of nanozyme were obtained to increase the catalytic efficiency (kcat/KM) of the nanozyme array consisted of the Fe3O4/Au NPs by 95.2%, which was two orders of magnitude than that of the open reactor. Based on this, a colorimetric method on an integrated microfluidic platform was proposed for sensitive biosensing of Salmonella typhimurium. The entire detection could be completed within 30 minutes, yielding a linear range from 102 to 107 CFU/mL and a detection limit as low as 5.6 CFU/mL.
研究领域:
生物传感
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纳米材料科学
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微生物检测
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DOI
PubMed
高影响因子
CHEMOSPHERE
·
2021
·
IF 7.086
Xiuping Feng,Ruixin Yan,Qinggang Zhang,Qun Wan,Takeshi Hagio,Ryoichi Ichino,Long Kong,Xinde Cao,Liang Li
It is urgent and essential to remove antimony from wastewater due to its potential carcinogenicity . In this paper, a nano ferric oxide (NFO) adsorbent was synthesized in a one-step low temperature calcination (150 °C) process. It presents a surprising self-acidification behavior, could automatically adjust the pH to around 4 from different intimal pH values (4–9), which enable it to efficiently remove more than 99% of Sb(V) from wastewater in a wide pH range. X-ray photoelectron spectroscopy analysis proved that the self-acidification function was originated from the hydrolyzation of surface Fe atoms on ferric oxide nanoparticles . The maximum adsorption capacity of this adsorbent is 78.1 mg/g which is 2–3 times higher than that of the samples obtained at higher temperatures (250 °C and 350 °C), and also its adsorption kinetic constant is ten times higher, which can be attributed to the larger surface areas and smaller sizes of ferric oxides synthesized at 150 °C. In the actual wastewater treatment , the effluent’s concentration after treatment can be maintained below the instrument detection limit even under low initial antimony concentration. We believe that this new adsorbent has great potential in the practical application in the treatment of Sb polluted wastewaters due to its simple synthesis, high efficiency, and low cost.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Yaxiong Zeng,Wenxiang Liu,Xueni Huang,Xiaotian Yang,Beimeng Qi,Jie Yu,Hailu Fu
Heavy metal–organic compound complexes are commonly found in textile dye wastewater, seriously threatening human health. This work proposes a unique integrated electrocoagulation and electro-Fenton (EC-EF) system combining an Fe anode and a carbon-felt-loaded hydroxylated carbon nanotubes (CNTs-OH/CF) cathode for the simultaneous removal of aniline and Sb(V) from wastewater. Under optimal conditions of initial pH of 3.0, NaCl concentration of 0.15 mol/L, and current density of 30 A m −2 , the EC-EF system removed almost 100 % of aniline in 40 min and of Sb(V) in 10 min, with an energy consumption equal to 2.01 KWh kg −1 . The excellent performance derived from the usage of the CNTs-OH/CF cathode increased the number of active sites, hydrophobicity, and electrical conductivity, facilitating the oxygen reduction reaction and electron transfer, thus enhancing the in situ-produced hydrogen peroxide (H 2 O 2 ) with a concentration of 644.53 mg L −1 , exceeding most reported values. Furthermore, hydroxyl radicals (•OH), the dominant active species generated through the reactions of Fe 2+ with electro generated H 2 O 2 , promoted the degradation of aniline. Meanwhile, Sb(V) was adsorbed by the ferric hydroxide formed at the anode and finally co-precipitated. The excellent reusability after five cycles and outstanding catalytic activity towards real wastewater demonstrate the superiority of the developed system for treating wastewater in practical applications. This study presents a unique integrated technology and a theoretical foundation for the simultaneous removal of heavy metal–organic compound complexes from wastewater.
研究领域:
环境科学
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化学工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Mingming Peng,Deng You,Hui Shi,Penghui Shao,Wei Ren,Liming Yang,Xin Sheng,Jiachuang Shao,Xuan Ding,Lin Ding,Haozhi Wang,Kai Yu,Xubiao Luo
Metal-organic frameworks (MOFs) with ability to create rich defects in the structures for exposed binding sites are beneficial for wastewater treatment. However, the inter-relation between the defect concentration and heavy metal removal performance still deserves the exploration. Herein, UiO-66-X crystal materials are successfully synthesized in the presence of monocarboxylic acid of acetic, benzoic, and trifluoroacetic acid, and the effect of defect concentration on Sb(V) removal performance is systematically studied. XRD, TG, EPR and XPS characterizations reveal that the addition of modulators increases the content of defects in the UiO-66-X, which is beneficial to improve the sites utilization. As expected, the Sb(V) adsorption properties of UiO-66-AA, UiO-66-BA and UiO-66-TFA are boosted by 54.1%, 140.0% and 197.7% compared to that of pristine UiO-66. Density functional theory (DFT) calculations further confirm that UiO-66-TFA with the most defects exhibits lower adsorption energy and higher charge transfer, significantly improving the uptake performance of Sb(V). Additionally, the UiO-66-TFA successfully removes antimony in actual water from the Tianyi Lake and Ganjiang River with residual concentrations below 5 μg L −1 , meeting the drinking water standard. This work provides guidance for the rational selection of modulators for efficient heavy metal removal from wastewater.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）