D. T. Le, Luc The Trinh, Bac Hoang Bui, Dung Tien Cong, Thao Phuong Thi Le
Halloysite from Thach Khoan, Phu Tho province showed nanotube structure with a chemical formula Al2Si2O5(OH)4.2H2O when fully hydrated and Al2Si2O5(OH)4 when dehydrated, specific surface areas are 15.7434 and 22.0211 m2/g. Halloysite was used to study on adsorption behaviour of Pb2+, Cd2+, Zn2+ (M2+) ions. The effect of factors on the M2+ adsorption efficiency was investigated. The adsorption efficiency of Pb2+, Cd2+, Zn2+ obtained 90.75; 73.75 and 67.09 % respectively under the suitable condition: halloysite mass of 0.7 g/50 mL solution, initial concentration of 40 mg/L M2+, pH for Pb2+, Cd2+, Zn2+ = 5.31; 6.2; 5.6 espectively, contact time of 80 minutes (for Pb2+, Cd2+) and 100 minutes (for Zn2+) at room temperature (30 oC). Adsorption isotherm curves were studied based on Langmuir and Freundlich models. The kinetic of the adsorption process was investigated following the first-order-pseudo and second-order-pseudo models. Removal efficiency of Pb2+, Cd2+ and Zn2+ from the wastewater of lead, zinc mining – Cho Don, Bac Kan was 99,59 %; 92,08 % và 99,46 %, respectively.
{"title":"Removal Behavior of Pb2+, Cd2+, Zn2+ from wastewater of lead, zinc mining – Cho Don, Bac Kan by halloysite clay","authors":"D. T. Le, Luc The Trinh, Bac Hoang Bui, Dung Tien Cong, Thao Phuong Thi Le","doi":"10.51316/jca.2023.036","DOIUrl":"https://doi.org/10.51316/jca.2023.036","url":null,"abstract":"Halloysite from Thach Khoan, Phu Tho province showed nanotube structure with a chemical formula Al2Si2O5(OH)4.2H2O when fully hydrated and Al2Si2O5(OH)4 when dehydrated, specific surface areas are 15.7434 and 22.0211 m2/g. Halloysite was used to study on adsorption behaviour of Pb2+, Cd2+, Zn2+ (M2+) ions. The effect of factors on the M2+ adsorption efficiency was investigated. The adsorption efficiency of Pb2+, Cd2+, Zn2+ obtained 90.75; 73.75 and 67.09 % respectively under the suitable condition: halloysite mass of 0.7 g/50 mL solution, initial concentration of 40 mg/L M2+, pH for Pb2+, Cd2+, Zn2+ = 5.31; 6.2; 5.6 espectively, contact time of 80 minutes (for Pb2+, Cd2+) and 100 minutes (for Zn2+) at room temperature (30 oC). Adsorption isotherm curves were studied based on Langmuir and Freundlich models. The kinetic of the adsorption process was investigated following the first-order-pseudo and second-order-pseudo models. Removal efficiency of Pb2+, Cd2+ and Zn2+ from the wastewater of lead, zinc mining – Cho Don, Bac Kan was 99,59 %; 92,08 % và 99,46 %, respectively.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91109839","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}
In this study, reduced graphene oxide (rGO) incorporated on NdFeO3 (NFO/rGO) nanocomposite was successfully synthesized by using a facile hydrothermal method for photo-Fenton degradation of phenol in oily wastewater. The structural, elemental, morphological, optical property, and photo-Fenton performance of NFO/rGO nanocomposite were evaluated. From the characterizations, the prepared NFO/rGO nanocomposite showed a heterostructure between reduced graphene oxide (rGO) and NdFeO3. In addition, the prepared NFO/rGO photocatalyst has efficient charge separation compared to that of pure NFO. The photo-Fenton catalytic activity of the NFO/rGO photocatalyst was investigated by phenol degradation under visible light irradiation, with a maximum removal efficiency of 94.3 % after 90 min. In contrast to pure NFO, the introduction of rGO could suggestively enhance the photo-Fenton catalytic activity by increasing the specific surface area and narrow band gap energy. The possible reaction mechanism was also discussed.
{"title":"Construction of NdFeO3 nanoparticles on reduced graphene oxide for an enhanced visible light assisted-Fenton degradation of organic pollutant in oily wastewater","authors":"N. Phan, N. Chu","doi":"10.51316/jca.2023.029","DOIUrl":"https://doi.org/10.51316/jca.2023.029","url":null,"abstract":"In this study, reduced graphene oxide (rGO) incorporated on NdFeO3 (NFO/rGO) nanocomposite was successfully synthesized by using a facile hydrothermal method for photo-Fenton degradation of phenol in oily wastewater. The structural, elemental, morphological, optical property, and photo-Fenton performance of NFO/rGO nanocomposite were evaluated. From the characterizations, the prepared NFO/rGO nanocomposite showed a heterostructure between reduced graphene oxide (rGO) and NdFeO3. In addition, the prepared NFO/rGO photocatalyst has efficient charge separation compared to that of pure NFO. The photo-Fenton catalytic activity of the NFO/rGO photocatalyst was investigated by phenol degradation under visible light irradiation, with a maximum removal efficiency of 94.3 % after 90 min. In contrast to pure NFO, the introduction of rGO could suggestively enhance the photo-Fenton catalytic activity by increasing the specific surface area and narrow band gap energy. The possible reaction mechanism was also discussed.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"297 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73085346","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}
Hien Chu, N. Tran, D. Dang, Viet Minh Nguyen, Hieu Cong Nguyen, Thao Truong, Binh Thi Lai
Now, water pollution is one of the leading concerns in the world especially heavy metal polltion. In recent years, researches on the use of agricultural waste as biochar and modified biochar to treat heavy metals in water are receiving the attention of scientists because of the economy as well as the high processing efficiency that it brings. In this study, biochar from rice husk was synthesized and modified by iron, then the obtained materials were characterized by SEM, FTIR methods. The results show that the Fe-biochar shows a high potential to remove arsenic at pH = 4 and the adsorption capacity was 18,96 – 28,49 mg/g.
{"title":"Study on the application of biochar made from agricultural by-products to treat arsenic pollution in water","authors":"Hien Chu, N. Tran, D. Dang, Viet Minh Nguyen, Hieu Cong Nguyen, Thao Truong, Binh Thi Lai","doi":"10.51316/jca.2023.026","DOIUrl":"https://doi.org/10.51316/jca.2023.026","url":null,"abstract":"Now, water pollution is one of the leading concerns in the world especially heavy metal polltion. In recent years, researches on the use of agricultural waste as biochar and modified biochar to treat heavy metals in water are receiving the attention of scientists because of the economy as well as the high processing efficiency that it brings. In this study, biochar from rice husk was synthesized and modified by iron, then the obtained materials were characterized by SEM, FTIR methods. The results show that the Fe-biochar shows a high potential to remove arsenic at pH = 4 and the adsorption capacity was 18,96 – 28,49 mg/g.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80152226","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}
A highly effective adsorbent comprised of the Graphene membrane was created using the sonification method in this study. For all we know, the resulting Graphene membrane was employed as an adsorbent for transformer oil purification for the first time. The quality of the treated oil was evaluated through several factors, such as acid number TAN(mg KOH/g), color, breakdown voltage, and viscosity. The results indicated that the Graphene membrane exceeded the other commercial adsorbents in terms of purifying capacity. Several reasons, including the unreduced oxygen functional groups, vacancy defects on the surface of the Graphene flake, the high specific surface area, and the proper pore size of the Graphene membrane for oil refining, might explain this exceptional outcome. Furthermore, the 3D structure of the Graphene membrane can extend the residence purification time of the transformer oil, assisting in the improvement of the purification capability of the Graphene membrane.
{"title":"Highly effective graphene membrane for transformer oil purification","authors":"T. T. Vu, Chi Thi Linh Nguyen, T. V. Pham","doi":"10.51316/jca.2023.028","DOIUrl":"https://doi.org/10.51316/jca.2023.028","url":null,"abstract":"A highly effective adsorbent comprised of the Graphene membrane was created using the sonification method in this study. For all we know, the resulting Graphene membrane was employed as an adsorbent for transformer oil purification for the first time. The quality of the treated oil was evaluated through several factors, such as acid number TAN(mg KOH/g), color, breakdown voltage, and viscosity. The results indicated that the Graphene membrane exceeded the other commercial adsorbents in terms of purifying capacity. Several reasons, including the unreduced oxygen functional groups, vacancy defects on the surface of the Graphene flake, the high specific surface area, and the proper pore size of the Graphene membrane for oil refining, might explain this exceptional outcome. Furthermore, the 3D structure of the Graphene membrane can extend the residence purification time of the transformer oil, assisting in the improvement of the purification capability of the Graphene membrane.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74144048","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}
The aim of this study was to design and characterize a NdFeO3-based photocatalyst prepared by sol-gel method for treatment of oily wastewater. Different characterization techniques such as X-ray diffraction (XRD), scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), UV–vis spectrophometer were used to elucidate the structure, morphology, surface functional groups, and optical absorption properties of the prepared NdFeO3 photocatalyst. The photo-Fenton degradation performance of the as-prepared NdFeO3 photocatalyst was investigated by degrading oily-containing wastewater under visible light irradiation. The NdFeO3 photocatalyst manifests the high chemical oxygen demand (COD) removal efficiency of 97.6 % for 120 min reaction) thanks to its narrow band gap energy and high crystalline degree.
{"title":"Sol-gel synthesis and characterization of neodymium orthoferrite for disposing oily wastewater","authors":"N. Phan, N. Chu","doi":"10.51316/jca.2023.027","DOIUrl":"https://doi.org/10.51316/jca.2023.027","url":null,"abstract":"The aim of this study was to design and characterize a NdFeO3-based photocatalyst prepared by sol-gel method for treatment of oily wastewater. Different characterization techniques such as X-ray diffraction (XRD), scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), UV–vis spectrophometer were used to elucidate the structure, morphology, surface functional groups, and optical absorption properties of the prepared NdFeO3 photocatalyst. The photo-Fenton degradation performance of the as-prepared NdFeO3 photocatalyst was investigated by degrading oily-containing wastewater under visible light irradiation. The NdFeO3 photocatalyst manifests the high chemical oxygen demand (COD) removal efficiency of 97.6 % for 120 min reaction) thanks to its narrow band gap energy and high crystalline degree.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85239937","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}
Vân-Anh Nguyen, Manh Dang-Vu Nguyen, Canh Ba Bui, Lien Hong Nguyen, Nga To Thi Phan, Ha Hong Cao
In this research, the nanosized Fe2V4O13 complex oxide material was synthesized by the hydrothermal method. Its structure, morphology characterization, and other properties were determined using X-ray, SEM, EDX, and DTA-TG methods. The catalytic activity of the material was evaluated in terms of the decolorization and the degradation of the Indigo carmine dye. The optimal condition for the degradation and the reusability of the catalyst were determined. The results showed that the heterogeneous Fenton-like catalyst is a promise for wastewater treatment.
本研究采用水热法合成了纳米级 Fe2V4O13 复合氧化物材料。采用 X 射线、SEM、EDX 和 DTA-TG 方法测定了该材料的结构、形貌特征和其他性质。通过对靛蓝胭脂红染料的脱色和降解，评估了该材料的催化活性。确定了降解的最佳条件和催化剂的可重复使用性。结果表明，这种类似芬顿的异相催化剂有望用于废水处理。
{"title":"Hydrothermal Synthesis and Catalytic Activity of a Nanosized Fe2V4O13 Material in Heterogeneous Fenton-like Reaction for Degradation of Organic Compounds","authors":"Vân-Anh Nguyen, Manh Dang-Vu Nguyen, Canh Ba Bui, Lien Hong Nguyen, Nga To Thi Phan, Ha Hong Cao","doi":"10.51316/jca.2023.024","DOIUrl":"https://doi.org/10.51316/jca.2023.024","url":null,"abstract":"In this research, the nanosized Fe2V4O13 complex oxide material was synthesized by the hydrothermal method. Its structure, morphology characterization, and other properties were determined using X-ray, SEM, EDX, and DTA-TG methods. The catalytic activity of the material was evaluated in terms of the decolorization and the degradation of the Indigo carmine dye. The optimal condition for the degradation and the reusability of the catalyst were determined. The results showed that the heterogeneous Fenton-like catalyst is a promise for wastewater treatment.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139361292","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}
Cuong Manh Le, Chung Cong Le, Thai Thanh Tran, Lan Anh Thi Luu
In the present work, the extract process of Cam leaves powder (Peristrophe bivalvis(L.) Merr) was investigated. The results exhibited optimal parameters of the extract process. Green synthesis of silver nanoparticles was demonstrated using the freshly prepared aqueous extract of the Cam leaves powder as a reducing and stabilizing agent. The silver nanoparticles were characterized by analytical techniques such as UV-Vis, FTIR, Raman, XRD, and EDX. Characterization techniques confirmed that the silver nanoparticles were synthesized
{"title":"Investigation of the Cam leaf extraction process oriented to synthesize silver nanoparticles (Ag NPs)","authors":"Cuong Manh Le, Chung Cong Le, Thai Thanh Tran, Lan Anh Thi Luu","doi":"10.51316/jca.2023.014","DOIUrl":"https://doi.org/10.51316/jca.2023.014","url":null,"abstract":"In the present work, the extract process of Cam leaves powder (Peristrophe bivalvis(L.) Merr) was investigated. The results exhibited optimal parameters of the extract process. Green synthesis of silver nanoparticles was demonstrated using the freshly prepared aqueous extract of the Cam leaves powder as a reducing and stabilizing agent. The silver nanoparticles were characterized by analytical techniques such as UV-Vis, FTIR, Raman, XRD, and EDX. Characterization techniques confirmed that the silver nanoparticles were synthesized","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"98 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79208289","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}
Vo Van Mai, Anh Van Thi Bui, Toan Ta, Phuong Thi Tuyet Nguyen
This paper deals the effects of some factors on the fabrication process of high purity α-Al2O3 from Tan Rai Al(OH)3. The obtained results of surface morphology (SEM), crystal structure (XRD), composition (EDX) of the original Al(OH)3 and Al2O3 show that Al(OH)3 washed with CH3COOH 2N is best at 80oC, efficient Dissolution reached the highest when using 25% HCl, Al2O3 calcined at 1400oC for 2 hours. The obtained Al2O3 has the structure α-Al2O3, the highpurity.
研究了几种因素对Tan Rai Al(OH)3制备高纯α-Al2O3工艺的影响。对原Al(OH)3和Al2O3的表面形貌(SEM)、晶体结构(XRD)和组成(EDX)进行了分析，结果表明:用CH3COOH 2N水洗Al(OH)3在80℃时效果最好，用25%的HCl、Al2O3在1400oC下煅烧2 h时有效溶解达到最高。所得Al2O3具有α-Al2O3结构，纯度高。
{"title":"Research and fabrication of high purity α-Al2O3 from Tan Rai aluminum hydroxide","authors":"Vo Van Mai, Anh Van Thi Bui, Toan Ta, Phuong Thi Tuyet Nguyen","doi":"10.51316/jca.2023.013","DOIUrl":"https://doi.org/10.51316/jca.2023.013","url":null,"abstract":"This paper deals the effects of some factors on the fabrication process of high purity α-Al2O3 from Tan Rai Al(OH)3. The obtained results of surface morphology (SEM), crystal structure (XRD), composition (EDX) of the original Al(OH)3 and Al2O3 show that Al(OH)3 washed with CH3COOH 2N is best at 80oC, efficient Dissolution reached the highest when using 25% HCl, Al2O3 calcined at 1400oC for 2 hours. The obtained Al2O3 has the structure α-Al2O3, the highpurity.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85272769","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}
A new generation photocatalyst CuFe2O4/rGO/halloysite nanotube (HNT) was manufactured using a simple procedure in this work. Material characterisation results reveal that the CuFe2O4 active phase with a size of around 30-40 nm is spread rather consistently across the sandwich-like structure of rGO/HNT. The material's bandgap energy is around 1.9 eV, which boosts the material's capacity to function even in the visible light area. The catalytic activity test showed that the catalyst, with an active phase composition of 70% by weight, was able to completely decomposing CIP after just 1 hour of light. The pHpzc value and pH impact were also investigated. The findings suggest that the material can completely handle CIP in a neutral environment (pH = 7). Scavenger tests also demonstrated the involvement of reactive radicals in CIP degradation, with holes (h+) and hydroxyl radicals (●OH) having the major effect. These important results constitute the basis for the in-depth investigations of the CIP degradation mechanism.
{"title":"Effect of pH and active radical on the photodegradation of Ciprofloxacin antibiotic in wastewater using novel catalyst based on rGO/halloysite composite decorating with copper iron oxide","authors":"Ngo Ha-Son, L. Nguyen","doi":"10.51316/jca.2023.015","DOIUrl":"https://doi.org/10.51316/jca.2023.015","url":null,"abstract":"A new generation photocatalyst CuFe2O4/rGO/halloysite nanotube (HNT) was manufactured using a simple procedure in this work. Material characterisation results reveal that the CuFe2O4 active phase with a size of around 30-40 nm is spread rather consistently across the sandwich-like structure of rGO/HNT. The material's bandgap energy is around 1.9 eV, which boosts the material's capacity to function even in the visible light area. The catalytic activity test showed that the catalyst, with an active phase composition of 70% by weight, was able to completely decomposing CIP after just 1 hour of light. The pHpzc value and pH impact were also investigated. The findings suggest that the material can completely handle CIP in a neutral environment (pH = 7). Scavenger tests also demonstrated the involvement of reactive radicals in CIP degradation, with holes (h+) and hydroxyl radicals (●OH) having the major effect. These important results constitute the basis for the in-depth investigations of the CIP degradation mechanism.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90452559","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}
Oxygen is essential for human respiration and the existence of all living organisms. Medically it is used to treat diseases related to impaired respiratory function. In industrial scale, gaseous oxygen is separated from the air by liquefaction and fractional distillation techniques, while on a small and medium scale oxygen is usually separated by using zeolite molecular sieves and pressure swing adsorption (PSA) technology. During the Covid-19 pandemic, the demand for oxygen concentrators (PSA type) for personal and family use is very high. However, there isn’t any Vietnamese factory for production oxygen concentrator, so it is imported from abroad. In this paper, a pilot-scale oxygen concentrator was built at the Department of chemical process equipment, Hanoi University of Science and Technology. The operation of the device has been simulated and optimized on Aspen Adsorption software. The optimization parameters obtained will be used to design the equipment in industrial scale.
{"title":"Simulation of working process of oxygen concentrator equipment by pressure swing adsorption","authors":"T. D. Vu, Duong Van Le, Minh Duc Mai, Hung Duy Vu","doi":"10.51316/jca.2023.019","DOIUrl":"https://doi.org/10.51316/jca.2023.019","url":null,"abstract":"Oxygen is essential for human respiration and the existence of all living organisms. Medically it is used to treat diseases related to impaired respiratory function. In industrial scale, gaseous oxygen is separated from the air by liquefaction and fractional distillation techniques, while on a small and medium scale oxygen is usually separated by using zeolite molecular sieves and pressure swing adsorption (PSA) technology. During the Covid-19 pandemic, the demand for oxygen concentrators (PSA type) for personal and family use is very high. However, there isn’t any Vietnamese factory for production oxygen concentrator, so it is imported from abroad. In this paper, a pilot-scale oxygen concentrator was built at the Department of chemical process equipment, Hanoi University of Science and Technology. The operation of the device has been simulated and optimized on Aspen Adsorption software. The optimization parameters obtained will be used to design the equipment in industrial scale.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75329603","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}
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