Recent Innovations in Chemical Engineering最新文献

{"title":"Application Research and Prospect of 3D Modeling, Printing Medical Course Teaching Aids","authors":"Bin Ren, Han Wang, Ting Zhang","doi":"10.2174/2405520416666230809124219","DOIUrl":"https://doi.org/10.2174/2405520416666230809124219","url":null,"abstract":"Background: The application of 3D printing technology in the field of education is mainly concentrated on the curriculum of primary and secondary schools and clinical PBL teaching, while the application of 3D printing technology as a teaching auxiliary means in higher medical education is less. Methods: The objective of this work is to demonstrate the use of 3D printing teaching aids to improve students' learning outcomes and guide more students to participate in learning 3D printing or biological 3D printing research. Based on 3D printing technology, data were collected through a network questionnaire to analyze the demand of medical students in Colleges and Universities in this paper for 3D printing teaching aids. Through the demand for 3D printing teaching aids, we have offered 3D courses and encouraged students to actively participate in model design. Results: Students can print some models using a 3D printer based on their knowledge and personal interests. It is found that universities can use virtual 3D printing technology to make up for the current shortage of 3D printers and high material consumption. Conclusion: 3D printing technology can also help biomedical engineering students better combine clinical knowledge to achieve better results. In addition, this study also analyzed the limitations of 3D printing development in China.","PeriodicalId":38021,"journal":{"name":"Recent Innovations in Chemical Engineering","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135145993","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}

{"title":"Preparation of Tetraethylenepentamine (TEPA) and Imidazole (Ims)-Modified Activated Carbon using Response Surface Methodology for Carbon Capture Applications","authors":"Noor Hidayu Abdul Rani, Nor Fadilah Mohamad, Nurul Hazwani Sabri, Wan Nur Fazlina Abdol Jani","doi":"10.2174/2405520416666230809121615","DOIUrl":"https://doi.org/10.2174/2405520416666230809121615","url":null,"abstract":"Introduction: Carbon capture and storage (CCS) is the most mature technology to capture CO2 from flue gas stream through the adsorption process. The commercial adsorbent, though efficient, is cost-inhibitive. An alternative adsorption approach is by utilizing a palm kernel shell (PKS) as adsorbent. To enhance the adsorption capacity of CO2, impregnation with Tetraethylenepentamine (TEPA) and imidazoles (Ims) were introduced to increase the selectivity and capacity of CO2. The response surface methodology (RSM) technique was utilized to optimize the operating conditions for the preparation of modified AC-PKS for carbon capture applications. Method: The main process variables for this study were impregnation ratio (TEPA: Ims) and impregnation temperature. The 2 Factorial 1 model was developed for iodine number which was selected as the investigated response. The optimum conditions for modified AC-PKS had been identified to be an impregnation ratio 0.17 and a temperature of 90°C which gave a maximum of iodine number 1062.95 mg/g. Based on this optimum condition, the experimental value of iodine number is 1027.58 mg/g and is found to agree adequately with that (1062.95 mg/g) predicted from the model. The higher the iodine number, the greater the surface area available for adsorption. With the high surface area of activated carbon allows it to have more adsorption sites, increasing its capacity to remove contaminants from liquids or gases. According to Scanning electron microscope (SEM), TEPA and Ims molecules were attached to the surface of ACs and stimulated the chemisorption process for excellent adsorption process. Result: Two prominent adsorption peaks were also observed at 3100 cm-1 and 2800 cm-1, corresponding to the stretching of the N-H functional group and confirmed the successfulness of impregnation between TEPA and Ims. Based on elemental analysis (EA), the addition of TEPA and imidazole resulted in an increase in the number of amine groups on the surface of the adsorbent. Conclusion: Hence, this modified AC-PKS with optimum impregnation ratio and temperature increased the adsorption capacity and selectivity of CO2 adsorption from the simulated flue gas with 4.239 mol/kg AC compared to the previous study reported for unmodified ACPKS only 1.005 mol/kg AC.","PeriodicalId":38021,"journal":{"name":"Recent Innovations in Chemical Engineering","volume":"174 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135145836","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}

{"title":"Meet the Co-Editor","authors":"Antonio Gil","doi":"10.2174/240552041603231004142859","DOIUrl":"https://doi.org/10.2174/240552041603231004142859","url":null,"abstract":"","PeriodicalId":38021,"journal":{"name":"Recent Innovations in Chemical Engineering","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135145919","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}

{"title":"Analysis of Performance in Homogenous Mixing Systems using Ansys","authors":"M. A. Abdullah, Ambuj Gupa, Rithul Roy, A. A.","doi":"10.2174/2405520416666230525095959","DOIUrl":"https://doi.org/10.2174/2405520416666230525095959","url":null,"abstract":"\u0000\u0000This study aims to understand the mixing phenomenon and the mass transfer occurring simultaneously by simulating the system using Ansys Fluent.\u0000\u0000\u0000\u0000Taking liquid-liquid mixing into account, a simple agitated mixing system can be compared to a CSTR, utilizing the impeller to provide forced convection mixing conditions. The same forced convection can be achieved using high flow rates in smooth vessels instead of mechanical impellers to produce the convection current. The systems are then stimulated using Ansys Fluent software to calculate the mass transfer coefficient and several dimensionless numbers, such as the Reynolds number, Sherwood number, and Schmidt number, in order to understand the underlying mechanism of mass transfer in mixing systems.\u0000\u0000\u0000\u0000It has been observed that a 90° pitch impeller tends to have a higher NP value as compared to a 45° pitch impeller. Overall performance can be compared by the time taken to achieve homogeneity at the same angular rotational speed of 100 rpm. Thus, in terms of performance, it can be concluded that 45° pitch is (inclined) > 90° pitch is (in-centre) > 45° pitch (in-centre) is > 90° pitch (inclined).\u0000\u0000\u0000\u0000The simulation model used in this study is useful for a combination of CFD model predictions using the sliding mesh approach and the VOF model. It can be applied to study the effect of different designs on the flow pattern and mixing time for a set of axial flow impellers.\u0000","PeriodicalId":38021,"journal":{"name":"Recent Innovations in Chemical Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41468429","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}

{"title":"A study on fracture propagation law of CO2 composite fracturing in shale reservoir","authors":"Liyang Song, Jiwei Wang, Zhiyu Sun, Hu Guo","doi":"10.2174/2405520416666230507211547","DOIUrl":"https://doi.org/10.2174/2405520416666230507211547","url":null,"abstract":"\u0000\u0000In recent years, CO2 composite fracturing technology has been widely used in unconventional reservoirs. Compared to conventional hydraulic fracturing, CO2 fracturing can create complex fractures, replenish formation energy and reduce oil flow resistance. For shale oil reservoirs with natural fractures, CO2 composite fracturing can not only give full play to the advantages of complex fracture networks created by CO2 but also make use of water-based fracturing fluid to create long fractures with high conductivity.\u0000\u0000\u0000\u0000Based on fracture fluid flow, stress interference, natural fracture description, and CO2 phase change equation, a CO2 composite fracture propagation model was established in this paper to simulate the effects of fracturing fluid type, CO2 proportion, construction scale, natural fracture development, fracturing fluid injection rate and other factors on the propagation morphology of CO2 injection fracture network in shale oil reservoirs.\u0000\u0000\u0000\u0000The results show that the water-based fracturing fluid is beneficial to the formation of long main fractures, but the overall complexity of the fracture network and the effective stimulated volume of the fracture network are significantly lower than that of CO2 fracturing. The application of the appropriate proportion of CO2 composite fracturing fluid can give full play to the comprehensive advantages of CO2 and water-based fracturing fluid and realize the full stimulation of the reservoir. CO2 fracturing in shale oil reservoirs with low principal stress difference and high natural fracture development extent can communicate natural fractures in a large range and form a complex fracture network. For shale oil reservoirs with natural fractures, a high fracturing fluid injection rate can significantly improve the complexity of the fracture network.\u0000\u0000\u0000\u0000The CO2 composite fracturing technology is applied to horizontal wells in X shale reservoir, and the production after fracturing is significantly higher than that of offset wells, which can be applied in the same type of reservoir and has broad application prospects.\u0000","PeriodicalId":38021,"journal":{"name":"Recent Innovations in Chemical Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42646448","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}

{"title":"Meet the Co-Editor","authors":"Antonio Gil","doi":"10.2174/240552041602230807003252","DOIUrl":"https://doi.org/10.2174/240552041602230807003252","url":null,"abstract":"","PeriodicalId":38021,"journal":{"name":"Recent Innovations in Chemical Engineering","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135721831","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}

{"title":"Comparative Study for the Absorption of Carbon Dioxide in Aqueous Amine Solvents for Enhanced Loading","authors":"Akash Sood, Avinash Thakur, Sandeep Mohan Ahuja","doi":"10.2174/2405520416666230320163220","DOIUrl":"https://doi.org/10.2174/2405520416666230320163220","url":null,"abstract":"\u0000\u0000The current study aimed to investigate the CO2 absorption capacity of the aqueous alkanolamine, including primary, secondary, tertiary, and sterically hindered amines and polyamines, i.e., monoethanolamine (MEA), diethanolamine (DEA), triethanolamine (TEA) and 2-amino-2-methyl-1-propanol (AMP), tetraethylenepentamine (TEPA), triethylenetetramine (TETA), 3-(Methylamino)propylamine (MAPA), and diethylenetriamine (DETA) at 40, 60, and 80 °C at 1.1 bar. An increase in reaction temperature caused a decrement in CO2 loading across the board for all solvents. The trend of CO2 loading was TEA \u0000< MEA < DEA < AMP < MAPA < DETA < TETA < TEPA at 40 ºC, TEA < DEA < MEA < AMP < MAPA < DETA < TETA < TEPA, at 60 ºC and TEA < DEA < AMP < MEA < MAPA < DETA < TETA < TEPA at 80 ºC. The results indicated that TEPA has great potential to be utilized as an energy-efficient and non-corrosive solvent for CO2 capture since it has outperformed all other aqueous amine solvents in this present study. Furthermore, the CO2 loading of sterically hindered amine (AMP) at the same temperature was found to be higher than primary, secondary, and tertiary amines. Heat of absorption〖 (∆H〗_abs) was also determined to gauge the energy requirement to regenerate absorbents for cyclic loading from an economic viewpoint. DETA has the highest 〖∆H〗_abs = 84.48 kJ/mol. On the contrary, the long-chain tertiary amine TEA resulted in the least 〖∆H〗_abs = 40.21 kJ/mol, among all other solvents. Whereas the sterically hindered amine (AMP) was reported to possess mid-range 〖∆H〗_abs, i.e., 58.76 kJ/mol. Among all selected solvents, polyamines showed higher 〖∆H〗_abs than other conventional amines pertaining to the precedence of TEA","PeriodicalId":38021,"journal":{"name":"Recent Innovations in Chemical Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43386897","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}

{"title":"Preparation and Characterization of Cu(NO3)2 Modified Activated Carbon Adsorbents and Influencing Factors of H2S Adsorption","authors":"J. Zhang, Mei Zhang, Yanxiu Liu, Xueqin Wang, Yuanyuan Wang","doi":"10.2174/2405520416666230308153305","DOIUrl":"https://doi.org/10.2174/2405520416666230308153305","url":null,"abstract":"\u0000\u0000With the constant development and growth of the world’s economy, the demand for energy continues to rise. However, rising oil prices, increasing carbon emissions, and energy shortages will limit economic development and affect living standards. Therefore, further exploitation and utilization of natural gas are of great significance for the sustainable development of national economies and the improvement of civil life.\u0000\u0000\u0000\u0000Natural gas contains acidic gas, such as hydrogen sulfide (H2S), and can lead to physical safety issues, environmental pollution, equipment corrosion, and catalyst poisoning. Therefore, a desulfurization process, which has practical significance, must be carried out to reduce the H2S content to less than 20 mg•m−3.\u0000\u0000\u0000\u0000Currently, the main desulfurization processes involve dry and wet desulfurization methods. The wet desulfurization methods include physical, chemical, and physico-chemical solvent methods, which have a large processing capacity and involve a continuous operation sequence applied to the purification of natural gas containing a high sulfur content. The dry desulfurization methods, which use a solid as the desulfurizer, have high precision, easy operation, and low energy consumption. This method has been widely applied to advanced treatment.\u0000Activated carbon, which has a large surface area, large pore volume, and complex porous structure, is widely used as an adsorbent for desulfurization. When compared with other adsorbents, activated carbon has several advantages, such as a high adsorption capacity and low cost. The H2S removal performance of the adsorbent can be significantly improved after modification. In this study, using a low concentration of H2S and nitrogen to simulate raw fuel gas, cupric nitrate-modified activated carbon was used as the main adsorbent for desulfurization. The effect of the preparation conditions on the H2S removal performance was studied, and the adsorbents were characterized using a series of methods.\u0000\u0000\u0000\u0000Adsorption desulfurization\u0000\u0000\u0000\u0000In this study, a low concentration of H2S and nitrogen were used to simulate raw fuel gas, and cupric nitrate-modified activated carbon was used as an adsorbent. The results from structural analysis indicated a significant change in the surface structure of AC by introducing Cu(NO3)2. Cu(NO3)2 promoted the transformation of micropores into mesopores or macropores and active substances into the pores of AC for desulfurization. The effects of the preparation conditions on the H2S removal performance were studied using a fixed-bed adsorption column. The best preparation conditions for the Cu(NO3)2 modified activated carbon adsorbent involved: a Cu(NO3)2 impregnation concentration of 5%, impregnation time of 24 h, calcination temperature of 300 C, and calcination time of 2 h. The H2S saturation capacity and desulfurization rate reached 55.4 mg•g−1 and 98.92%, respectively. The H2S saturation capacity was improved by 38.2 mg•g−1 compared with unmodified activat","PeriodicalId":38021,"journal":{"name":"Recent Innovations in Chemical Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43628112","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}

{"title":"Influence of Gas Medium State Parameters on the Pressure Port Design of Gas Wave Ejector","authors":"Yiming Zhao, Dongxu Cai, D. Hu","doi":"10.2174/2405520416666230307115232","DOIUrl":"https://doi.org/10.2174/2405520416666230307115232","url":null,"abstract":"\u0000\u0000The objective of this study is to explore and emphasize the influence mechanism and law of gas parameters on pressure port design.\u0000\u0000\u0000\u0000CFD commercial software FLUENT was used for numerical simulation in this study, and a three-dimensional numerical model was employed to improve the accuracy of calculation. The GWE experimental platform was also built to verify the theoretical and numerical analysis results.\u0000\u0000\u0000\u0000When the expansion ratio α is raised from 1.35 to 2.0, the average shock velocity vs can increase by about 4.9%, and when raising the compression ratio from 1.05 to 1.2, the change of vs is only 1.4% relatively. Raising the expansion ratio value from 1.35 to 2.0, the optimal offset of the high- and medium-pressure ports only changes by 5.3%, and the decrease of the ejection rate caused by the deviation of the aforementioned offset is only about 4.3%,which proves that the equipment has strong ability to resist fluctuations of working conditions.\u0000\u0000\u0000\u0000Moving velocity of the shock wave varies with temperature, working pressure ratio and adiabatic index of the gas. The increase of high- and low-pressure inlet gas temperatures will cause an increment of vs and as, and the influence of high-pressure inlet gas temperature Tht on vs is greater. There are optimal high- and medium-pressure port offsets under different pressure ratios as the experimental results have shown. When the pressure ratio remains constant, the change in pressure value does not have a significant impact on the optimal port design and equipment performance.\u0000","PeriodicalId":38021,"journal":{"name":"Recent Innovations in Chemical Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44180779","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}

{"title":"Preface","authors":"Y. Tao","doi":"10.2174/240552041601230505091826","DOIUrl":"https://doi.org/10.2174/240552041601230505091826","url":null,"abstract":"","PeriodicalId":38021,"journal":{"name":"Recent Innovations in Chemical Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43321615","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}