Revista de Chimie最新文献_第6页

Preparation of Porous Coke by Microwave Pyrolysis of Oily Sludge: Optimization Through Response Surface Methodology and TG-FTIR Analysis 微波热解含油污泥制备多孔焦炭:响应面法和TG-FTIR分析优化

Revista de Chimie Pub Date : 2022-05-02 DOI: 10.37358/rc.22.2.8522

Wenxuan Li, Xiupeng Ma, Xiaoyan Leng, Yingfei Hou

{"title":"Preparation of Porous Coke by Microwave Pyrolysis of Oily Sludge: Optimization Through Response Surface Methodology and TG-FTIR Analysis","authors":"Wenxuan Li, Xiupeng Ma, Xiaoyan Leng, Yingfei Hou","doi":"10.37358/rc.22.2.8522","DOIUrl":"https://doi.org/10.37358/rc.22.2.8522","url":null,"abstract":"\u0000Oily sludge (OS) is a kind of solid waste with precious oil resources in the petroleum industry. Because OS poses a severe threat to the environment, the treatment of OS has been widely studied. In this work, OS was used to prepare porous sludge coke a through microwave pyrolysis and one-step ZnCl2 activation technique. The response surface methodology was designed to optimize the parameters of the preparation process of porous sludge coke, and the interaction between the parameters was further analyzed. The experimental result showed that the model could fit the experimental results well. The optimal iodine adsorption value of porous sludge coke, 785.23 mg/g, was obtained by using the response surface methodology when the microwave power was 797 W, the ZnCl2 addition ratio was 0.5, and the pyrolysis time was 25 min. The experimental result showed that the model could fit the experimental results well. The influence of ZnCl2 on the pyrolysis of OS was investigated through TG-FTIR. The results showed that the presence of ZnCl2 could prevent the fracture of C-H bond, reduce the rate of carbon source loss caused by the fracture of long-chain hydrocarbons to produce short-chain hydrocarbons in OS, and enrich the carbon source of sludge coke. On the other hand, the molten ZnCl2 occupied the tiny pores when the oil components in the OS volatilized, which can enrich the pore volume of the sludge coke.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89637437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multifunctional Surfactant: Integration of Fracturing Fluid Flooding 多功能表面活性剂:压裂液驱的集成

Revista de Chimie Pub Date : 2022-01-31 DOI: 10.37358/rc.22.1.8500

Meng Cun, Jincheng Mao, Jizhen Tian, Mingjin Cai, Xiaojiang Yang, Chon Lin, Zigao Huang

{"title":"Multifunctional Surfactant: Integration of Fracturing Fluid Flooding","authors":"Meng Cun, Jincheng Mao, Jizhen Tian, Mingjin Cai, Xiaojiang Yang, Chon Lin, Zigao Huang","doi":"10.37358/rc.22.1.8500","DOIUrl":"https://doi.org/10.37358/rc.22.1.8500","url":null,"abstract":"\u0000Significant research focus has recently been directed toward energy-saving and emission-reduction practices, as well as the unique benefits of an integrated working fluid in the oilfield industry. Surfactants cannot be widely used in engineering practice due to cost constraints. At the same time, there is no proper solution to the flowback liquid problem. SY-JS, a multifunctional surfactant, was developed to broaden the application of surfactants in the oilfield industry. It still meets the field operation requirements of a good fracturing fluid thickener with a shear rate of 170 s-1 at 140�C and salinity (NaCl or KCl) of 12-13%. When the fracturing fluid has finished its job and returns to the ground, the molecular structure of the surfactant in the flowback fluid was found to be complete after laboratory evaluation of the fracturing and oil displacement integrated working fluid systems. Surfactants with an intact molecular structure should retain their distinct lipophilic and hydrophilic properties. When groundwater and produced water are compounded and re-injected into the reservoir for oil displacement, 0.2 percent anionic surfactant B1-12 is used to balance the charge and reduce interfacial tension. The rock`s contact angle can be reduced by 56.95 percent, and the recovery rate can be increased by 6%. Based on these findings, the surfactant`s dynamic self-healing mechanism was proposed. Furthermore, the capillary force, interfacial tension, and wettability were combined to propose wettability determines capillary force direction and interfacial tension determines capillary force magnitude. Furthermore, it provides favorable evidence that interfacial tension does not always reach ultralow levels during reservoir exploitation.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74874605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Short communicationThe Outbreak of the COVID-19 Pandemic and its Healing Effects on the Environment 2019冠状病毒病大流行的爆发及其对环境的治愈作用

Revista de Chimie Pub Date : 2022-01-31 DOI: 10.37358/rc.22.1.8509

M. Krishnan, M. S. Kavitha, Prakash Veerasamy Radhakrishnan, Murugesan Gurusamy

引用次数: 0

Study on Degradation of Lignin by TiO2-based Photocatalyst Doped with Carbon Dots 掺杂碳点tio2基光催化剂降解木质素的研究

Revista de Chimie Pub Date : 2022-01-31 DOI: 10.37358/rc.22.1.8507

Yu Tan, Mingyu He, Ying Li, M. Yimit

引用次数: 0

Oxidative Stability of Avocado and Peanut Oils Under Different Heating Temperatures 不同加热温度下牛油果和花生油的氧化稳定性

Revista de Chimie Pub Date : 2022-01-31 DOI: 10.37358/rc.22.1.8468

F. Pop, C. Semeniuc

{"title":"Oxidative Stability of Avocado and Peanut Oils Under Different Heating Temperatures","authors":"F. Pop, C. Semeniuc","doi":"10.37358/rc.22.1.8468","DOIUrl":"https://doi.org/10.37358/rc.22.1.8468","url":null,"abstract":"\u0000The objective of this research was to investigate the effect of heating temperature on the quality parameters of avocado and peanut oils subjected to heating. Vegetable oils were heated at varying temperatures (110, 140, 170, 200 and 230�C for 30 min) to follow quality alterations. Levels of peroxide value, iodine value, thiobarbituric acid reactive substances, total polar compounds, refractive index, free acidity, and fatty acids composition were determined to measure the extent of lipid oxidation. Peroxide value was significantly (p [ 0.001) influenced by heating temperature in the case of peanut oil. Iodine value decreased significantly (p [ 0.01) in both oils with the increase in heating temperature due to the decrease of the unsaturation degree. Avocado oil showed the smallest increase in thiobarbituric acid reactive substances and total polar compounds during heat treatment. The fatty acids profile of peanut oil was rich in polyunsaturated fatty acids with a level of 42%, followed by monounsaturated fatty acids with about 36%. The heat treatment of oils has produced changes in unsaturated fatty acids, these have undergone isomerization from cis to trans form. The increases of heating temperature up to 230�C significantly deteriorated the quality of peanut oil, but to a lesser extent the one of avocado oil.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"63 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86079434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of Fe3O4 Nanoparticles on Methane Production from Anaerobic Digestion and Kinetic Analysis 纳米Fe3O4对厌氧消化产甲烷的影响及动力学分析

Revista de Chimie Pub Date : 2022-01-31 DOI: 10.37358/rc.22.1.8505

Tong-jiu Zuo, Y. Qian, Haonan Zhang, Jianbo Liu, Lei Gong, Jun Zhou, Xiaoqi Yang

引用次数: 0

Microbial Degradation Pathways of Acrylic Paint Thinner Gas in Biotrickling Filter and Comparison of Kinetic Models Under Different Gas Concentrations 生物滴滤池中丙烯酸涂料稀释剂气体的微生物降解途径及不同气体浓度下的动力学模型比较

Revista de Chimie Pub Date : 2022-01-31 DOI: 10.37358/rc.22.1.8508

Qinwei Jia, Jun Zhou, Haonan Zhang, Tong-jiu Zuo, Luyu Wang, Lei Gong, Feng Geng

{"title":"Microbial Degradation Pathways of Acrylic Paint Thinner Gas in Biotrickling Filter and Comparison of Kinetic Models Under Different Gas Concentrations","authors":"Qinwei Jia, Jun Zhou, Haonan Zhang, Tong-jiu Zuo, Luyu Wang, Lei Gong, Feng Geng","doi":"10.37358/rc.22.1.8508","DOIUrl":"https://doi.org/10.37358/rc.22.1.8508","url":null,"abstract":"\u0000In this study, the effect of inlet concentration of pollutants, empty bed residence time (EBRT) and liquid recycling velocity on the performance of the BTF was explored. The results showed the best operating characteristics of the biotrickling filter for this study were at an inlet concentration of 500 mg/m3�Cthe EBRT of 300s and liquid recycling velocity of 25.46 m h-1. At this condition, the total removal efficiency of pollutants can reach more than 90%. Among them, the removal efficiency of toluene and ethylbenzene was above 95%, and the xylene (m-xylene, o-xylene) could reach more than 70%, corresponding to elimination capacities (ECs) of 3.02 �} 0.33 g m-3 h-1, 1.81 �} 0.2 g m-3 h-1, 0.60 �} 0.07 g m-3 h-1. Through the fatty acid identification system and 16S rDNA identification, it could be found that the four dominant bacteria (Bacillus cereus, Bacillus subtilis, Acinetobacter calcoaceticus, Belem Bacillus) had a significant effect on the removal of acrylic paint thinner. According to the detection of organic compounds by gas chromatography and the corresponding enzymes produced by four dominant bacteria, the pathways for microorganisms to degrade pollutants could be inferred. The absorption-biofilm theory and the adsorption-biofilm theory were used to simulate and verify the degradation process of exhaust gas at different concentrations respectively.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89969957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Mechanism of Selective Separation of Antimony from Chloride Leachate of Copper Anode Slime 铜阳极泥氯化物渗滤液中锑的选择性分离机理研究

Revista de Chimie Pub Date : 2022-01-31 DOI: 10.37358/rc.22.1.8506

Yanliang Zeng, Chunfa Liao, Zhengxin Xu, Fupeng Liu

{"title":"The Mechanism of Selective Separation of Antimony from Chloride Leachate of Copper Anode Slime","authors":"Yanliang Zeng, Chunfa Liao, Zhengxin Xu, Fupeng Liu","doi":"10.37358/rc.22.1.8506","DOIUrl":"https://doi.org/10.37358/rc.22.1.8506","url":null,"abstract":"\u0000The mechanism of selective separation of antimony from copper anode slime leachate is studied. Density functional theory is used to calculate the unit cell energy, band structure, density of states, number of charge distributions and overlap populations of the SbCl3 hydrolysates SbOCl, Sb3O4Cl and Sb4O5Cl2, and these are studied by infrared spectroscopy. The pathways for formation of SbOCl, Sb3O4Cl and Sb4O5Cl2 in water, ethanol and ethylene glycol systems are clarified. The results show that the energy of the SbOCl unit cell is the lowest, and the structure is more stable. SbOCl exhibits strong electronic localization, weak orbital expansion, and more stability; SbOCl has a wider pseudoenergy gap, and its covalent bonds are stronger than those of Sb3O4Cl and Sb4O5Cl2. Hydrolysis of SbCl3 leads to preferential generation of more stable structures. The charge distribution, the sizes of overlap populations, and the infrared spectra indicate that SbCl3 has been hydrolysed. There are two basic paths for the process of alcoholysis: a water- or alcohol-ionized hydroxyl replaces one chlorine atom in SbCl3 to form an [Sb(OH)Cl2] monomer, and as the degree of hydrolysis increases, the H and Cl atoms are removed to form SbOCl. Conversely, Sb3O4Cl, Sb4O5Cl2 or Sb atoms may be formed an [Sb-OH] monomer generated directly by water- or alcohol-ionised hydroxyl groups, and Cl atoms replace the H atom in the hydroxyl group of the [Sb-OH] monomer to form SbOCl, Sb3O4Cl and Sb4O5Cl2.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73249748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phytochemical Characterization of Ethanolic Extracts of the Leaves of Zanthoxylum Caribaeum Lam and Evaluation of Antimicrobial Activity Against Burkholderia Glumae 花椒叶乙醇提取物的植物化学特性及对金黄色伯克氏菌的抑菌活性评价

Revista de Chimie Pub Date : 2022-01-31 DOI: 10.37358/rc.22.1.8502

G. Chaves-Bedoya, Edgar Joel Vera, Luz Yineth Ortíz-Rojas

引用次数: 2

Jorge Eduardo Hirsch and the Hirsch-index** a Personal Chronicle 豪尔赫·爱德华多·赫希和赫希指数**个人编年史

Revista de Chimie Pub Date : 2022-01-31 DOI: 10.37358/rc.22.1.8511

Tibor Braun

引用次数: 0