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Lei M, Shen F, Hu J, Zhao L, Huang M, Zou J, Tian D, Yang G, Zeng Y, Deng S. A novel way to facilely degrade organic pollutants with the tail-gas derived from PHP (phosphoric acid plus hydrogen peroxide) pretreatment of lignocellulose. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127517. [PMID: 34688009 DOI: 10.1016/j.jhazmat.2021.127517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 09/18/2021] [Accepted: 10/13/2021] [Indexed: 06/13/2023]
Abstract
The abundantly released tail-gas from lignocellulose pretreatment with phosphoric acid plus hydrogen peroxide (PHP) was found to accelerate the aging of latex/silicone textural accessories of the pretreatment device. Inspired by this, tail-gas was utilized to control organic pollutants. Methylene blue (MB), as a model pollutant, was rapidly decolorized by the tail-gas, and oxidative degradation was substantially proven by full-wavelength scanning with a UV-visible spectrometer. The tail-gas from six typical lignocellulosic feedstocks produced 68.0-98.3% MB degradation, suggesting its wide feedstock compatibility. Three other dyes, including rhodamine B, methyl orange and malachite green, obtained 97.5-99.5% degradation; moreover, tetracycline, resorcinol and hexachlorobenzene achieved 73.8-93.7% degradation, suggesting a superior pollutant compatibility. In a cytotoxicity assessment, the survival rate of the degraded MB was 103.5% compared with 80.4% for the untreated MB, implying almost no cytotoxicity after MB degradation. Mechanism investigations indicated that the self-exothermic reaction in PHP pretreatment drove the self-generated peroxy acids into tail-gas. Moreover, it heated the pollutant solution and thermally activated peroxy acids as free radicals for efficient pollutant degradation. Here, a brand-new technique for degrading organic pollutants with a "Win-Win-Win" concept was purposed for lignocellulose valorization, pollutant control by waste tail-gas, and biofuel production.
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Affiliation(s)
- Miao Lei
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Fei Shen
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China.
| | - Jinguang Hu
- Chemical and Petroleum Engineering, Schulich School of Engineering, The University of Calgary, Calgary T2N 4H9, Canada
| | - Li Zhao
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Mei Huang
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Jianmei Zou
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Dong Tian
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Gang Yang
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Yongmei Zeng
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Shihuai Deng
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
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Du W, Yu Z, Wang X, Wu J, Zhang L. Large-scale and clean preparation of low-defect few-layered graphene from commercial graphite via hydroxyl radical exfoliation in an acidic medium. REACT CHEM ENG 2022. [DOI: 10.1039/d1re00289a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mechanism diagram of hydroxyl radical stripping graphite.
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Affiliation(s)
- Wenqiao Du
- Jilin Provincial Engineering Laboratory for the Complex Utilization of Petro-resources and Biomass, School of Chemical Engineering, Changchun University of Technology, Changchun, Jilin, 130012, P. R. China
| | - Zaiqian Yu
- Jilin Provincial Engineering Laboratory for the Complex Utilization of Petro-resources and Biomass, School of Chemical Engineering, Changchun University of Technology, Changchun, Jilin, 130012, P. R. China
| | - Xin Wang
- School of Petrochemical Technology, Jilin Institute of Chemical Technology, Jilin 132022, P. R. China
| | - Jingdong Wu
- Jilin Provincial Engineering Laboratory for the Complex Utilization of Petro-resources and Biomass, School of Chemical Engineering, Changchun University of Technology, Changchun, Jilin, 130012, P. R. China
| | - Long Zhang
- Jilin Provincial Engineering Laboratory for the Complex Utilization of Petro-resources and Biomass, School of Chemical Engineering, Changchun University of Technology, Changchun, Jilin, 130012, P. R. China
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Dou H, Zheng Y, Qu M, Chen P, He C, Gozin M, Pang S. Nitration of Chitin Monomer: From Glucosamine to Energetic Compound. Molecules 2021; 26:molecules26247531. [PMID: 34946612 PMCID: PMC8704513 DOI: 10.3390/molecules26247531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/09/2021] [Accepted: 12/10/2021] [Indexed: 11/22/2022] Open
Abstract
The nitration of chitin monomer in a mixture of nitric acid and acetic anhydride was conducted and a highly nitrated (3R,4R,6R)-3-acetamido-6-((nitrooxy)methyl)tetrahydro-2H-pyran-2,4,5-triyl trinitrate (1) was obtained. Its structure was fully characterized using infrared spectroscopy, NMR spectroscopy, elemental analysis, and X-ray diffraction. Compound 1 possesses good density (ρ: 1.721 g·cm−3) and has comparable detonation performance (Vd: 7717 m·s−1; P: 25.6 GPa) to that of nitrocellulose (NC: Vd: 7456 m·s−1; P: 23 GPa; Isp = 239 s) and microcrystalline nitrocellulose (MCNC; Vd: 7683 m·s−1; P: 25 GPa; Isp = 250 s). However, Compound 1 has much lower impact sensitivity (IS: 15 J) than the regular nitrocellulose (NC; IS: 3.2 J) and MCNC (IS: 2.8 J). Compound 1 was calculated to exhibit a good specific impulse (Isp: 240 s), which is comparable with NC (Isp: 239 s) and MCNC (Isp: 250 s). By replacing the nitrocellulose with Compound 1 in typical propellants JA2, M30, and M9, the specific impulse was improved by up to 4 s. These promising properties indicate that Compound 1 has a significant potential as an energetic component in solid propellants.
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Affiliation(s)
- Hui Dou
- Experimental Center of Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; (H.D.); (P.C.)
| | - Yuxuan Zheng
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;
| | - Manyi Qu
- Shanxi North Xingan Chemical Industry Co., Ltd., Taiyuan 030008, China;
| | - Peng Chen
- Experimental Center of Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; (H.D.); (P.C.)
| | - Chunlin He
- Experimental Center of Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; (H.D.); (P.C.)
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;
- Yangtze Delta Region Academy, Beijing Institute of Technology, Jiaxing 314019, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
- Correspondence: (C.H.); (M.G.); (S.P.)
| | - Michael Gozin
- School of Chemistry, Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
- Center for Nanoscience and Nanotechnology, Tel Aviv University, Tel Aviv 6998701, Israel
- Center for Advanced Combustion Science, Tel Aviv University, Tel Aviv 6997801, Israel
- Correspondence: (C.H.); (M.G.); (S.P.)
| | - Siping Pang
- Experimental Center of Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; (H.D.); (P.C.)
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;
- Correspondence: (C.H.); (M.G.); (S.P.)
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Wu L, Jin X, Zhao T, Wang H, Dai Z. Impact factors of the degradation of bisphenol A by nitrocellulose membrane under illumination. J Environ Sci (China) 2021; 100:193-202. [PMID: 33279032 DOI: 10.1016/j.jes.2020.05.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 05/08/2020] [Accepted: 05/08/2020] [Indexed: 06/12/2023]
Abstract
Nitrocellulose membrane (NCM) can produce hydroxyl radicals under illumination, which promotes the oxidative degradation of organic pollutants. In this paper, NCM was used to oxidize bisphenol A (BPA) under simulated sunlight. The effects of pH, temperature, light intensity, anion and cation on the degradation of BPA were analyzed. The photodegradation process of BPA was discussed. The optimal photolysis rate was 0.031 min-1 when the temperature was 30°C, the light intensity was 2.67 × 104 Lux, and the pH value was 9.0. The alkaline environment, temperature and light intensity can promote the photodegradation of BPA. Except for nitrate ions, anions and cations can inhibit the photodegradation of BPA. Compared with cations, anions have a greater inhibitory effect on BPA degradation. The degradation products of BPA by NCM were analyzed by gas chromatographic/mass. This study may provide useful information for the BPA degradation by NCM in complex water samples.
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Affiliation(s)
- Li Wu
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China; Collaborative Innovation Center for Coal-Bed Methane and Shale Gas of Henan, Jiaozuo 454000, China
| | - Xinmiao Jin
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China
| | - Tongqian Zhao
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China.
| | - Haipo Wang
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China
| | - Zhifeng Dai
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China
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Li J, Xiao C, Wang K, Li Y, Zhang G. Enhanced Generation of Reactive Oxygen Species under Visible Light Irradiation by Adjusting the Exposed Facet of FeWO 4 Nanosheets To Activate Oxalic Acid for Organic Pollutant Removal and Cr(VI) Reduction. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:11023-11030. [PMID: 31429293 DOI: 10.1021/acs.est.9b00641] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In this work, taking FeWO4 nanosheets as an example, the activation of oxalic acid (OA) based on facet engineering for the enhanced generation of active radical species was reported, revealing unprecedented surface Fenton activity for pollutant degradation. Density functional theory calculations confirmed the more efficient generation of reactive oxygen species over FeWO4 nanosheets with the {001} facet exposed (FWO-001) under visible light irradiation compared to the efficiency of FeWO4 nanosheets with the {010} facet exposed (FWO-010), which could be attributed to a higher density of iron and the efficient activation of OA on the {001} facet. The H2O2-derived •OH tended to diffuse away from the active sites of FWO-001 into solution to favor the continuous activation of OA into the active radicals for pollutant redox reactions, but preferred to remain on FWO-010 to hinder the further activation of OA on the {010} facet. Additionally, the generation of •CO2- endowed FeWO4 with a strong reduction ability. Compared with FWO-010, FWO-001 exhibited enhanced redox activity for the catalytic degradation of organic pollutants and Cr(VI) in the optimized conditions. These findings can help in understanding the facet dependent surface Fenton chemistry of catalytic redox reactions and in designing efficient catalysts for environmental decontamination.
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Affiliation(s)
- Jun Li
- Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures , Wuhan University of Technology , 122 Luoshi Road , Wuhan 430070 , China
| | - Chun Xiao
- Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures , Wuhan University of Technology , 122 Luoshi Road , Wuhan 430070 , China
| | - Kai Wang
- Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures , Wuhan University of Technology , 122 Luoshi Road , Wuhan 430070 , China
| | - Yuan Li
- Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures , Wuhan University of Technology , 122 Luoshi Road , Wuhan 430070 , China
| | - Gaoke Zhang
- Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures , Wuhan University of Technology , 122 Luoshi Road , Wuhan 430070 , China
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Hu Y, Chen K, Li YL, He JY, Zhang KS, Liu T, Xu W, Huang XJ, Kong LT, Liu JH. Morphology-tunable WMoO nanowire catalysts for the extremely efficient elimination of tetracycline: kinetics, mechanisms and intermediates. NANOSCALE 2019; 11:1047-1057. [PMID: 30569932 DOI: 10.1039/c8nr08162j] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The presence of antibiotics in aquatic environments has attracted global concern. The Fenton system is one of the most popular methods for eliminating antibiotics in aquatic environments, but the existing Fenton system is limited due to the potential for secondary pollution, and the narrow pH range (∼3-5). In this study, we report that the bottlenecks for high-strength tetracycline (TC) wastewater treatment under neutral conditions can be tackled well by a class of mixed-valence W/Mo containing oxides (WMoO-x) with tunable morphologies. Triethanolamine was selected as a structure-directing agent to control the morphologies of the catalysts going from ultrathin nanowires (UTNWs) to wire-tangled nanoballs (WTNBs). As a proof of concept, the most efficient catalyst in the batch samples, WMoO-1 ultrathin nanowires, was employed as a model material for TC degradation, in which the coordinatively unsaturated metal atoms with oxygen defects serve as the sites for TC chemisorption and electron transfer. As a result, 91.75% of TC was degraded in 60 min for the initial TC concentration of 400 μM. Furthermore, LC-MS analysis confirmed that the TC could be degraded to nontoxic by-products without benzene rings, and finally mineralized to CO2 and H2O. ICP-MS and cycle experiments showed the good stability and reusability of WMoO-1 UTNWs in the Fenton-like system. The findings of this work provide fresh insights into the design of nanoscale catalyst morphology and reaffirm the versatility of doping in tuning catalyst activity, extending the range of the optimal pH values to neutral conditions. This is significant for the expansion of the heterogeneous Fenton-like family and its application in the field of water treatment.
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Affiliation(s)
- Yi Hu
- Nano-Materials and Environmental Detection Laboratory, Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, People's Republic of China.
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