ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2021
·Vol. 28
·期 21
·26913-26922
·
IF 4.223
Yang Kaiyan,Sun Zhiyi,Wang Luochun,Lou Ziyang
To utilize carbon source and decompose the petroleum hydrocarbon substances simultaneously, adding the electrolysis to ozonation (E + -Ozonation) was employed to deal with hazardous activated petroleum waste sludge (P-sludge). It was found that E + -Ozonation could accelerate the ozone utilization and hydroxyl radical (·OH) generation rate. Soluble chemical oxygen demand (SCOD) increased around 16.3 times than the control one (from 471 to 7700 mg/L). The potential carbon source, such as the short-chain carbon of acetate and propionate, increased from 50 to 1088 mg/L and from 27 to 614 mg/L respectively, and approximately accounted for a quarter of total SCOD. Total petroleum hydrocarbon (TPH) decomposition was observed with a much higher removal rate of 84.3% simultaneously, and the substances with the function group of C=C and C–C bonds decomposed greatly. The long- and medium-chain substances in TPH were converted into the short-chain substances (90% of C 28 –C 40 of hydrocarbons was removed, while C 10 –C 18 increased by 13.8%). E + -Ozonation process could be one of the promising methods for P-sludge decomposition through carbon source releasing and TPH removal. Graphical abstract
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2023
·Vol. 415
·期 10
·1889-1896
·
IF 4.3
Li Shuofan,Wu Jianxun,Zhang Weilai,Jiang Yue,Hu Miao,Chung Keng H.,Shi Quan
Thiophenes and sulfides are the dominant sulfur-containing compounds in petroleum and have been widely of concern in the fields of petroleum refining and geochemistry. In this study, a novel approach was developed for selective separation and characterization of petroleum-derived thiophenic and sulfide compounds. Thiophenic compounds were selectively converted to sulfonates in the presence of vitriolic acid and can be characterized by negative ion electrospray mass spectrometry. Thiophenic sulfonates were further separated from the oil by silica chromatography and enabled the molecular characterization of sulfides in the residual oil. Various model sulfur compounds and a vacuum gas oil were used to validate the method; thiophenic and sulfide biomarker compounds in a well-documented crude oil were selectively characterized. The results indicate that the approach is feasible for molecular characterization of thiophenic and sulfide compounds, which is complementary to recently developed methods for separation and/or ionization of sulfur compounds in petroleum. Graphical Abstract
研究领域:
化学
·
地质学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Catalysts
·
2023
·Vol. 13
·期 3
·539
·
IF 3.9
Yuhao Chen,Mengli Li,Zhuang Xu,Guowang Shen,Xugeng Wang,Bin Dai
In this study, novel Zn catalysts were prepared by the wet impregnation method using printing and dyeing wastewater (PDW)-modified petroleum coke (petcoke) as a carrier, and they were applied to the acetylene acetoxylation. The pretreated petroleum coke has a high specific surface area which provides sufficient space for the loading of Zn. Calcination further increases catalyst activity, but when calcination temperatures exceed 1000 °C, a significant loss of Zn occurs, resulting in a dramatic decrease in catalyst activity. This enables the conversion of acetic acid up to 85%. X-ray photoelectron spectroscopy confirmed that a large amount of N is introduced into PC from PDW, which changes the electron transfer around Zn. Temperature-programmed desorption (TPD) analysis revealed that the nitrogen-doped Zn(OAc)2catalyst enhanced the catalytic activity by modulating the intensity of the catalyzed adsorption of acetic acid and acetylene. This study provides a new way to reuse petroleum coke and printing and dyeing wastewater to support the sustainable development of the vinyl acetate industry.Keywords:wastewater;petroleum coke;vinyl acetate
研究领域:
催化化学
·
环境科学
·
工业化学
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2022
·
IF 4.654
Shuofan Li,Ying Liu,Yahe Zhang,Jianxun Wu,Weilai Zhang,Quan Shi
Olefins are ubiquitous in processed petroleum streams undergoing thermal and catalytic cracking processes. However, the molecular characterization of olefins is often troublesome as a result of the presence of cycloalkanes or aromatic hydrocarbons, which cannot be distinguished from each other because of their identical molecular composition. This study provides a novel method to selectively characterize the molecular composition of olefins in processed petroleum streams. The olefins were selectively converted into halohydrocarbons with iodine monochloride as a reaction reagent and then subjected to high-resolution mass spectrometry analysis with positive-ion atmospheric pressure chemical ionization. The molecular composition of olefins in the coker diesel, the coker gas oil, and the pyrolysis gas oil was successfully characterized by the method, which indicates that the linear mono-olefins are often the dominant species. The derivatization also enables the identification of co-eluted individual compounds in gas chromatographic analysis. The method could be applicable to other streams from complex fossil fuels.
研究领域:
化学
·
能源科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2024
·
IF 5.5
Shaodong Jing,Xiaolong Xiao,Zhen Liu,Mengyu Ma,Qian Li
Background In the treatment of organic wastewater, Fenton technology often produces iron sludge due to iron circulation obstruction, which inhibits the treatment efficiency and causes secondary pollution to the actual water. Methods In this study, MoO 2 was used as a cocatalyst to promote the effective cycling of Fe 2+ /Fe 3+ in the Fe 2+ /H 2 O 2 system, thus efficiently degrading total petroleum hydrocarbons (TPHs). The superiority of MoO 2 as co-catalyst was verified under different reaction conditions, and its mechanism was discussed. Findings The degradation rate of TPHs in the Fe 2+ /H 2 O 2 /MoO 2 system (0.069 min −1 ) was about 14 times that of Fe 2+ /H 2 O 2 system (0.005 min −1 ). Compared with the Fe 2+ /H 2 O 2 system, the Fe 2+ /H 2 O 2 /MoO 2 system not only had a wider pH adaptation range, but also could effectively remove TPHs under the interference of co-existing organic and inorganic anions. MoO 2 did not change the types of reactive species in Fenton system, but it enhanced the production of reactive oxygen species (ROS) by promoting the Fe 2+ /Fe 3+ cycling in the reaction system, and ·OH was the main reactive species of TPHs degradation.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
MARINE POLLUTION BULLETIN
·
2021
·
IF 5.553
Jun Mu,Qingxue Leng,Guangfeng Yang,Baikang Zhu
Recurring oil spill accidents have been a global challenge and contribute to PAHs' heavy accumulation in marine sediments. The rapid bioremediation of PAHs with high concentrations in marine sediments has rarely been studied. In this study, four representative PAHs in crude oil were tested for fast anaerobic biodegradation. An efficient system for the anaerobic degradation of high-concentration PAHs was obtained using petroleum-acclimated marine sediments as inoculants in the treatment system. The degradation efficiencies of benzo[ b ]fluoranthene, benzo[ a ]pyrene, pyrene, and phenanthrene reached 0.21, 1.71, 3.89, and 4.10 mg/(L·d), respectively, which are 16, 2.8, 1.8, and 1.0 times higher than the reported values. Nitrate was preferred to sulfate as an electron acceptor. The acclimated sediment contains a high abundance of hydrocarbon-degrading bacteria. The number and diversity of species in the treatment system supplemented with PAHs decreased, but the abundance of some hydrocarbon-degrading bacteria and hydrocarbon-intermediate utilising bacteria increased, and ecological succession was observed.
研究领域:
环境科学
·
微生物学
·
生物修复
·
海洋生态学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2016
·
IF 3.014
Yang Liu,Peng Li,Yuwei Wang,Jingyan Liu,Yang Wang,Jinqiang Zhang,Mingbo Wu,Jieshan Qiu
In this work, a green and template-recyclable method was designed to obtain Fe 3 O 4 /petroleum asphalt based carbons (Fe 3 O 4 /PC) with different Fe 3 O 4 contents as anode material for Li-ion batteries. 73-Fe 3 O 4 /PC with 73% Fe 3 O 4 can deliver a high reversible capacity of 785 mAh g −1 at 200 mA g −1 with excellent stability. The superior electrochemical performance of as-made Fe 3 O 4 /PC is attributed to the good electrical conductivity of carbon framework from asphalt and its dimensional confinement on Fe 3 O 4 nanoparticles . This study not only demonstrates a green and economical route for high-value utilization of petroleum asphalt in energy storage, but also paves a new way for the preparation of porous carbon via recyclable template, which is indispensable for green chemistry.
研究领域:
材料科学
·
能源存储
·
绿色化学
✓ 已验证
DOI
高影响因子
Environmental Science-Processes & Impacts
·
2015
·Vol. 17
·期 12
·2022-2033
·
IF 2.171
Tiantian Shen,Yongrui Pi,Mutai Bao,Nana Xu,Yiming Li,Jinren Lu
The efficiencies of free and immobilized microbial consortia in the degradation of different types of petroleum hydrocarbons were investigated. In this study, the biodegradation rates of naphthalene, phenanthrene, pyrene and crude oil reached about 80%, 30%, 56% and 48% under the optimum environmental conditions of free microbial consortia after 7 d. We evaluated five unique co-metabolic substances with petroleum hydrocarbons, α-lactose was the best co-metabolic substance among glucose, α-lactose, soluble starch, yeast powder and urea. The orthogonal biodegradation analysis results showed that semi-coke was the best immobilized carrier followed by walnut shell and activated carbon. Meanwhile, the significance of various factors that contribute to the biodegradation of semi-coke immobilized microbial consortia followed the order of: α-lactose > semi-coke > sodium alginate > CaCl2. Moreover, the degradation rate of the immobilized microbial consortium (47%) was higher than that of a free microbial consortium (26%) under environmental conditions such as the crude oil concentration of 3 g L−1, NaCl concentration of 20 g L−1, pH at 7.2–7.4 and temperature of 25 °C after 5 d. SEM and FTIR analyses revealed that the structure of semi-coke became more porous and easily adhered to the microbial consortium; the functional groups (e.g., hydroxy and phosphate) were identified in the microbial consortium and were changed by immobilization. This study demonstrated that the ability of microbial adaptation to the environment can be improved by immobilization which expands the application fields of microbial remediation.
研究领域:
环境科学
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER INTERNATIONAL
·
2017
·Vol. 67
·期 3
·322-329
·
IF 2.07
Yu Qi,Zhihuan Weng,Jinyan Wang,Shouhai Zhang,Lishuai Zong,Cheng Liu,Xigao Jian
The development of bio-based thermosetting resins with good thermal stability can potentially afford sustainable polymers as replacements for petroleum-based polymers. We report a practical route to a novel catechin-based phthalonitrile resin precursor (CA-Ph), which contains free phenolic hydroxyl groups that result in ‘self-curing’ at elevated temperatures to afford a thermostable polymer. Comparison of the performance of this CA-Ph resin with that of a conventional petroleum-based bisphenol A phthalonitrile resin (BPA-Ph; containing 5 wt% of the curing agent 4,4′-diaminodiphenylsulfone) revealed that CA-Ph exhibits a lower melting point and curing temperature. Cured CA-Ph resin retains 95% of its weight at 520 °C under a nitrogen atmosphere, which compares favorably with results obtained for BPA-Ph resin that retains 95% of its weight at a lower temperature of 484 °C. Kinetic results indicated that the curing reactions of both CA-Ph and BPA-Ph systems follow an autocatalytic mechanism. These results suggest that catechin is a useful bio-based feedstock for the preparation of self-curing and thermally stable phthalonitrile resins for advanced technological applications. © 2017 Society of Chemical Industry
研究领域:
材料科学
·
有机化学
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2020
·
IF 5.578
Xiu Chen,Haidong Li,Linzhou Zhang,Quan Shi,Suoqi Zhao,Chunming Xu
Molecular-level characterization of sulfur-containing compounds has attracted particular attention due to its relative high abundance and negative impact on the refining process. In this paper, a novel analytical method for selective ionization of sulfidic and/or isolated thiophenic compounds (thiophene rings that are not condensed with aromatic systems) and condensed thiophenic compounds (thiophene rings that are condensed with aromatic systems, DBE ≥ 6, DBE = number of rings plus double bonds to carbon) in petroleum samples was developed by using fluoroboric acid (HBF 4 ) as ionization promoter. Positive-ion electrospray ionization [(+) ESI] Fourier transform ion cyclotron resonance mass spectrometry was followed to characterize the molecular composition. Sulfidic and/or isolated thiophenic compounds were mainly ionized as protonated molecular ions ([M+H] + ), while condensed thiophenic compounds (DBE ≥ 6) were mainly ionized as molecular radical cations (M + ). The method was validated by various sulfur-containing model compounds and then applied to vacuum gas oil, crude oil and heavy oil samples. (+) ESI coupled with HBF 4 additive is a simple method for selective ionization of sulfides and thiophenes in high-sulfur-content petroleum samples and has the potential for the characterization of sulfides and thiophenes in other complex mixtures.
研究领域:
化学
·
能源科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2014
·
IF 6.16
Mingbo Wu,Yue Wang,Wenting Wu,Chao Hu,Xiuna Wang,Jingtang Zheng,Zhongtao Li,Bo Jiang,Jieshan Qiu
Here we report a new strategy for preparation of water-soluble photoluminescent carbon quantum dots (CQDs) from petroleum coke . Petroleum coke was oxidized first in mixed concentrated H 2 SO 4 and HNO 3 , and then functionalized by hydrothermal ammonia treatment. The as-made CQDs and nitrogen-doped CQDs (N-CQDs) were characterized by UV–Vis absorption spectroscope, fluorescence spectroscope, transmission electron microscope, atomic force microscope , Raman spectrometer, X-ray powder diffractometer, X-ray photoelectron spectroscope and Fourier transform infrared spectrometer . The results show that the quantum yield of CQDs increases greatly from 8.7 to 15.8%, and the fluorescent lifetime increases from 3.86 to 6.11 ns after the hydrothermal treatment in ammonia. Moreover, the fluorescent color of N-CQDs can be tuned through the amount of doped nitrogen. Both CQDs and N-CQDs are water-soluble, and have uniform particle distribution, strong luminescence, and highly fluorescent sensitivity to pH in a range of 2.0–12.0. The uniform size distribution and nitrogen-doping of N-CQDs help to lead to high yield of radiative recombination , resulting in improved fluorescence properties. This work offers a simple pathway to produce high quality and enhanced photoluminescent CQDs from petroleum coke.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2017
·Vol. 32
·期 7
·1248-1257
·
IF 1.673
Jufeng Huang,Wei Xing,Fazle Subhan,Xiuli Gao,Peng Bai,Zhen Liu,Youhe Wang,Qingzhong Xue,Zifeng Yan
With increasing output of petroleum coke, the value-added exploitation of petroleum coke has become a tough problem. Preparing porous carbons is a traditional way to the value-added exploitation of petroleum coke. Here, we used a facile and efficient hard-templating strategy to synthesize mesoporous carbon with high surface area from petroleum coke. N2 adsorption analyses show that the BET specific area and pore volume of the carbons can reach up to 864 m2/g and 1.37 cm3/g, respectively. To utilize the abundant mesopores of the carbons, anthraquinone-modified mesoporous carbon was tested as an electrode material for supercapacitor applications. Electrochemical measurements demonstrated that the specific capacitance reached up to 366 F/g at the current density of 1 A/g, indicating a promising prospect of using this carbon in electrochemical energy-storage field. More importantly, the strategy used in this work can be easily modified to prepare other nano-carbon materials from petroleum coke.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）