Pub Date : 2020-07-31DOI: 10.15255/cabeq.2020.1808
W. Estela-Escalante, J. J. Pérez-Escalante, E. Fuentes-Navarro, R. M. Pinillos-Miñano
W. D. Estela-Escalante,a,* J. J. Pérez-Escalante,b E. L. Fuentes-Navarro,c and R. M. Pinillos-Miñanoa aUniversidad Nacional Mayor de San Marcos, Facultad de Química e Ingeniería Química, Av. Germán Amézaga 375, Lima 1, Perú bUniversidad Nacional Mayor de San Marcos, Facultad de Farmacia y Bioquímica, Jr. Puno 1002, Lima 1, Perú cUniversidad Nacional Agraria La Molina, Escuela de Posgrado, Av. La Molina s/n, La Molina, Lima 12, Perú
{"title":"The Potential of Using Grapefruit Peel as a Natural Support for Yeast Immobilization During Beer Fermentation","authors":"W. Estela-Escalante, J. J. Pérez-Escalante, E. Fuentes-Navarro, R. M. Pinillos-Miñano","doi":"10.15255/cabeq.2020.1808","DOIUrl":"https://doi.org/10.15255/cabeq.2020.1808","url":null,"abstract":"W. D. Estela-Escalante,a,* J. J. Pérez-Escalante,b E. L. Fuentes-Navarro,c and R. M. Pinillos-Miñanoa aUniversidad Nacional Mayor de San Marcos, Facultad de Química e Ingeniería Química, Av. Germán Amézaga 375, Lima 1, Perú bUniversidad Nacional Mayor de San Marcos, Facultad de Farmacia y Bioquímica, Jr. Puno 1002, Lima 1, Perú cUniversidad Nacional Agraria La Molina, Escuela de Posgrado, Av. La Molina s/n, La Molina, Lima 12, Perú","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2020-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41842193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-31DOI: 10.15255/cabeq.2020.1783
A. Ressler, A. Gudelj, Karla Zadro, M. Antunović, M. Cvetnić, M. Ivanković, H. Ivanković
Nanocomposite structure of the bone can be mimicked by chitosan/hydroxyapatite (CS/HAp) composite scaffold. Biological hydroxyapatite (HAp) contains various ions, which have a crucial role in bone growth. The aim of the present work was to synthesize biomimetic hydroxyapatite and prepare composite scaffolds based on chitosan, where HAp was synthesised from hen eggshells, seashells and cuttlefish bone. The powders were composed of nano-structured calcium deficient HAp and amorphous calcium phosphate (ACP). In the as-prepared powders, Sr2+, Mg2+ and Na+ ions were detected as a result of using biogenic precursor of Ca2+ ions. Highly porous CS/HAp structures have been prepared by freeze-gelation technique. The CS/HAp scaffolds have shown highly porous structure with very well interconnected pores and homogeneously dispersed HAp particles. The MTT assay of CS/HAp scaffolds has shown no toxicity, and the live/dead assay has confirmed good viability and proliferation of seeded cells.
{"title":"From Bio-waste to Bone Substitute","authors":"A. Ressler, A. Gudelj, Karla Zadro, M. Antunović, M. Cvetnić, M. Ivanković, H. Ivanković","doi":"10.15255/cabeq.2020.1783","DOIUrl":"https://doi.org/10.15255/cabeq.2020.1783","url":null,"abstract":"Nanocomposite structure of the bone can be mimicked by chitosan/hydroxyapatite (CS/HAp) composite scaffold. Biological hydroxyapatite (HAp) contains various ions, which have a crucial role in bone growth. The aim of the present work was to synthesize biomimetic hydroxyapatite and prepare composite scaffolds based on chitosan, where HAp was synthesised from hen eggshells, seashells and cuttlefish bone. The powders were composed of nano-structured calcium deficient HAp and amorphous calcium phosphate (ACP). In the as-prepared powders, Sr2+, Mg2+ and Na+ ions were detected as a result of using biogenic precursor of Ca2+ ions. Highly porous CS/HAp structures have been prepared by freeze-gelation technique. The CS/HAp scaffolds have shown highly porous structure with very well interconnected pores and homogeneously dispersed HAp particles. The MTT assay of CS/HAp scaffolds has shown no toxicity, and the live/dead assay has confirmed good viability and proliferation of seeded cells.","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2020-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.15255/cabeq.2020.1783","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44940852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-19DOI: 10.15255/cabeq.2019.1740
T. Chysirichote
Valorization of banana peel (BP) through solid state fermentation (SSF) was aimed in this research. The appropriate conditions of citric acid (CA) production by SSF of Aspergillus niger were investigated. Firstly, the optimum initial pH of the BP and the aeration rate were studied by conducting SSF in a 250-mL flask and 2-L glass column, respectively. It was found that the initial pH of the BP and aeration rates affected the CA production. The results showed that the initial pH of 5.0 and 1.0 vvm aeration were appropriate for the CA production of A. niger using BP as a substrate. The problem of rising temperature during SSF was found when applying the optimum condition to the SSF in the 20-L packed bed bioreactor (PBB), which caused a decrease in the CA production compared to that of the glass column. The cooling air jacket constructed to the PBB to remove the heat during the SSF helped increase the CA production from that in the PBB. The maximum CA production in the 20-L air-jacketed PBB was 124.0±19.2 mg gDS.
{"title":"Valorization of Banana Peel for Citric Acid Production under Solid State Fermentation with Aspergillus niger","authors":"T. Chysirichote","doi":"10.15255/cabeq.2019.1740","DOIUrl":"https://doi.org/10.15255/cabeq.2019.1740","url":null,"abstract":"Valorization of banana peel (BP) through solid state fermentation (SSF) was aimed in this research. The appropriate conditions of citric acid (CA) production by SSF of Aspergillus niger were investigated. Firstly, the optimum initial pH of the BP and the aeration rate were studied by conducting SSF in a 250-mL flask and 2-L glass column, respectively. It was found that the initial pH of the BP and aeration rates affected the CA production. The results showed that the initial pH of 5.0 and 1.0 vvm aeration were appropriate for the CA production of A. niger using BP as a substrate. The problem of rising temperature during SSF was found when applying the optimum condition to the SSF in the 20-L packed bed bioreactor (PBB), which caused a decrease in the CA production compared to that of the glass column. The cooling air jacket constructed to the PBB to remove the heat during the SSF helped increase the CA production from that in the PBB. The maximum CA production in the 20-L air-jacketed PBB was 124.0±19.2 mg gDS.","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2020-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47802794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.15255/cabeq.2019.1699
R. Faria, M. Houmard, V. A. M. D. Rosário, V. Lins, L. Heneine, T. Matencio
R. A. D. de Faria,a,* M. Houmard,b V. A. M. do Rosário,c V. de Freitas Cunha Lins,a L. G. D. Heneine,c and T. Matenciod aDepartment of Chemical Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-90, Brazil bDepartment of Materials and Construction Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-90, Brazil cDepartment of Applied Immunology, Fundação Ezequiel Dias, Belo Horizonte, MG 30510-010, Brazil dDepartment of Chemistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-90, Brazil
r·a·d·德·法里亚,* m . Houmard b v . a . m .,罗萨里奥c v . de Freitas达林家,l·g·d·Heneine c和t . Matenciod aDepartment化学工程、大学联邦德·米纳斯吉拉斯,贝洛奥里藏特,31270 - 90毫克,巴西bDepartment材料和建筑工程,大学联邦德·米纳斯吉拉斯,贝洛奥里藏特,31270 - 90毫克,巴西cDepartment应用免疫学,Fundacao Ezequiel迪亚斯,贝洛奥里藏特,30510 - 010毫克,巴西dDepartment化学,米纳斯吉拉斯州联邦大学，贝洛奥里藏特，MG 31270-90，巴西
{"title":"TiO2 Sol-gel Coating as a Transducer Substrate for Impedimetric Immunosensors","authors":"R. Faria, M. Houmard, V. A. M. D. Rosário, V. Lins, L. Heneine, T. Matencio","doi":"10.15255/cabeq.2019.1699","DOIUrl":"https://doi.org/10.15255/cabeq.2019.1699","url":null,"abstract":"R. A. D. de Faria,a,* M. Houmard,b V. A. M. do Rosário,c V. de Freitas Cunha Lins,a L. G. D. Heneine,c and T. Matenciod aDepartment of Chemical Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-90, Brazil bDepartment of Materials and Construction Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-90, Brazil cDepartment of Applied Immunology, Fundação Ezequiel Dias, Belo Horizonte, MG 30510-010, Brazil dDepartment of Chemistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-90, Brazil","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67063753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.15255/cabeq.2020.1823
W. Zhang, Zhen Zhang, Sufeng Wang
How to simplify the nitrogen removal process, reduce the cost and improve the efficiency has become an urgent problem to be solved. In this research, the isolated HNAD (heterotrophic nitrification and aerobic denitrification) bacteria were used to remove the nitrogen in wastewater. Modified absorbent stone was used as high-efficiency and low-cost immobilized material. The modification effect was determined by the changes in mechanical strength, Zeta potential, pore structure, micrographs and biomass. The practicability of the modified carrier was further proved by experiments of environmental effect and reuse. The modified carrier had excellent performance. By comparing the degradation effects of immobilized microorganism and free microorganism, it was proved that the immobilized microorganisms have broad application prospects and strong adaptability to environmental factors. Under the optimum conditions (temperature of 30 oC, pH of 7, dissolved oxygen of 3.5 mg L–1), the removal efficiency of ammonia nitrogen reached 100 % in 40 hours, the removal efficiency of total nitrogen reached 60.11 % in 50 hours, and the removal rate of total nitrogen was 2.404 mg-NL–1 h–1 by immobilized microorganisms with the treatment of simulated nitrogen-containing wastewater. This research provides new material for the immobilization of HN-AD bacteria and a new way for nitrogen removal.
{"title":"Nitrogen Removal by HN-AD Bacteria Immobilized on Modified Absorbent Stone","authors":"W. Zhang, Zhen Zhang, Sufeng Wang","doi":"10.15255/cabeq.2020.1823","DOIUrl":"https://doi.org/10.15255/cabeq.2020.1823","url":null,"abstract":"How to simplify the nitrogen removal process, reduce the cost and improve the efficiency has become an urgent problem to be solved. In this research, the isolated HNAD (heterotrophic nitrification and aerobic denitrification) bacteria were used to remove the nitrogen in wastewater. Modified absorbent stone was used as high-efficiency and low-cost immobilized material. The modification effect was determined by the changes in mechanical strength, Zeta potential, pore structure, micrographs and biomass. The practicability of the modified carrier was further proved by experiments of environmental effect and reuse. The modified carrier had excellent performance. By comparing the degradation effects of immobilized microorganism and free microorganism, it was proved that the immobilized microorganisms have broad application prospects and strong adaptability to environmental factors. Under the optimum conditions (temperature of 30 oC, pH of 7, dissolved oxygen of 3.5 mg L–1), the removal efficiency of ammonia nitrogen reached 100 % in 40 hours, the removal efficiency of total nitrogen reached 60.11 % in 50 hours, and the removal rate of total nitrogen was 2.404 mg-NL–1 h–1 by immobilized microorganisms with the treatment of simulated nitrogen-containing wastewater. This research provides new material for the immobilization of HN-AD bacteria and a new way for nitrogen removal.","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67063965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.15255/cabeq.2020.1843
B. Darabi, T. Tabatabaei, F. Amiri, S. Jorfi
B. Darabi,a T. Tabatabaei,b,* F. Amiri,c and S. Jorfid,e,* aDepartment of Environmental Engineering, Bushehr Branch, Islamic Azad University, Bushehr, Iran bDepartment of Environmental Engineering, Bushehr Branch, Islamic Azad University, Bushehr, Iran cDepartment of Environmental Engineering, Bushehr Branch, Islamic Azad University, Bushehr, Iran dEnvironmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran eDepartment of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
b . Darabi,a . T. Tabatabaei,b，* F. Amiri,c和S. Jorfid,e，* a伊朗布什尔伊斯兰阿扎德大学布什尔分校环境工程系b伊朗布什尔伊斯兰阿扎德大学布什尔分校环境工程系c伊朗布什尔伊斯兰阿扎德大学布什尔分校环境工程系d阿瓦士Jundishapur医科大学环境技术研究中心伊朗阿瓦士君迪沙普尔医科大学卫生学院环境卫生工程系，伊朗阿瓦士
{"title":"Integrated Treatment of Saline Oily Wastewater Using Sono-Electrokinetic Process, Degradation Mechanism, and Toxicity Assessment","authors":"B. Darabi, T. Tabatabaei, F. Amiri, S. Jorfi","doi":"10.15255/cabeq.2020.1843","DOIUrl":"https://doi.org/10.15255/cabeq.2020.1843","url":null,"abstract":"B. Darabi,a T. Tabatabaei,b,* F. Amiri,c and S. Jorfid,e,* aDepartment of Environmental Engineering, Bushehr Branch, Islamic Azad University, Bushehr, Iran bDepartment of Environmental Engineering, Bushehr Branch, Islamic Azad University, Bushehr, Iran cDepartment of Environmental Engineering, Bushehr Branch, Islamic Azad University, Bushehr, Iran dEnvironmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran eDepartment of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67064307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.15255/cabeq.2019.1673
M. Shamsi, H. A. Ebrahim, M. Azarhoosh
This paper presents process simulation and optimization of coal gasification process in a moving-bed reactor using Pittsburgh No. 8 coal as feed. The system of differential equations for the mass and energy balances was solved using 4th-order Runge-Kutta method and optimized by non-dominated sorting genetic algorithm-II (NSGA-II) method. The simulation was used to predict solid and gas temperature profile and gas composition along the reactor. The simulation results were compared successfully with experimental data relevant to Westfield plant in Scotland. In addition, the effect of operating parameters such as coal-to-oxygen molar ratio, steam-to-oxygen molar ratio, inlet gas temperature, reactor pressure, and oxygen mole fraction in inlet air on amount of synthesis gas (syngas) production, hydrogen to carbon monoxide molar ratio (HCMR) in produced syngas, and coal conversion was investigated. Finally, the reactor performance was optimized to produce the highest syngas production with a HCMR of two using NSGA-II method.
本文以匹兹堡8号煤为原料，对移动床反应器内的煤气化过程进行了模拟和优化。采用四阶龙格-库塔法求解质量平衡和能量平衡的微分方程组，并采用非支配排序遗传算法- ii (NSGA-II)方法进行优化。利用模拟方法预测了反应器沿线的固体和气体温度分布以及气体成分。模拟结果与苏格兰韦斯特菲尔德电厂的实验数据进行了比较。此外，还考察了煤氧摩尔比、蒸汽氧摩尔比、进气温度、反应器压力、进气氧摩尔分数等操作参数对合成气产量、合成气中氢与一氧化碳摩尔比和煤转化率的影响。最后，采用NSGA-II法对反应器性能进行了优化，使其在HCMR为2的情况下产生最高的合成气。
{"title":"Simulation and Optimization of Coal Gasification in a Moving-bed Reactor to Produce Synthesis Gas Suitable for Methanol Production Unit","authors":"M. Shamsi, H. A. Ebrahim, M. Azarhoosh","doi":"10.15255/cabeq.2019.1673","DOIUrl":"https://doi.org/10.15255/cabeq.2019.1673","url":null,"abstract":"This paper presents process simulation and optimization of coal gasification process in a moving-bed reactor using Pittsburgh No. 8 coal as feed. The system of differential equations for the mass and energy balances was solved using 4th-order Runge-Kutta method and optimized by non-dominated sorting genetic algorithm-II (NSGA-II) method. The simulation was used to predict solid and gas temperature profile and gas composition along the reactor. The simulation results were compared successfully with experimental data relevant to Westfield plant in Scotland. In addition, the effect of operating parameters such as coal-to-oxygen molar ratio, steam-to-oxygen molar ratio, inlet gas temperature, reactor pressure, and oxygen mole fraction in inlet air on amount of synthesis gas (syngas) production, hydrogen to carbon monoxide molar ratio (HCMR) in produced syngas, and coal conversion was investigated. Finally, the reactor performance was optimized to produce the highest syngas production with a HCMR of two using NSGA-II method.","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67063623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.15255/cabeq.2018.1553
J. Buchmaier, C. Brunner, U. Griesbacher, A. Phan, A. Harvey, G. R. Krishna, B. Nidetzky, B. Muster
J. Buchmaier,a,* C. Brunner,a U. Griesbacher,a A. N. Phan,b A. P. Harvey,b R. Krishna Gudiminchi,c B. Nidetzky,c and B. Mustera aIndustrial Processes and Energy Systems, AEE – Institute for Sustainable Technologies, 8200 Gleisdorf, Feldgasse 19, Austria bNewcastle University, Chemical Engineering and Advanced Materials, Newcastle upon Tyne NE1 7RU, United Kingdom cAustrian Center of Industrial Biotechnology, 14 Petersgasse, 8010 Graz, Austria
J. Buchmaier,a，* c . Brunner,a . Griesbacher,a . N. Phan,b . P. Harvey,b . Krishna Gudiminchi,c . Nidetzky,c和b . Mustera工业过程和能源系统，AEE -可持续技术研究所，8200 Gleisdorf, Feldgasse 19，奥地利;纽卡斯尔大学，化学工程与先进材料，ne17 ru，英国工业生物技术中心，14 Petersgasse, 8010 Graz，奥地利
{"title":"Oscillatory Flow Bioreactor (OFB) Applied in Enzymatic Hydrolysis at High Solid Loadings","authors":"J. Buchmaier, C. Brunner, U. Griesbacher, A. Phan, A. Harvey, G. R. Krishna, B. Nidetzky, B. Muster","doi":"10.15255/cabeq.2018.1553","DOIUrl":"https://doi.org/10.15255/cabeq.2018.1553","url":null,"abstract":"J. Buchmaier,a,* C. Brunner,a U. Griesbacher,a A. N. Phan,b A. P. Harvey,b R. Krishna Gudiminchi,c B. Nidetzky,c and B. Mustera aIndustrial Processes and Energy Systems, AEE – Institute for Sustainable Technologies, 8200 Gleisdorf, Feldgasse 19, Austria bNewcastle University, Chemical Engineering and Advanced Materials, Newcastle upon Tyne NE1 7RU, United Kingdom cAustrian Center of Industrial Biotechnology, 14 Petersgasse, 8010 Graz, Austria","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67064055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.15255/cabeq.2020.1824
J. Henrique, R. Sousa, A. Secchi, M. Ravagnani, Abdessamad Barbara, C. Costa
J. P. Henrique,a R. de Sousa Jr.,a,b A. R. Secchi,c M. A. S. S. Ravagnani,d A. Barbara,e and C. B. B. Costad,* aChemical Engineering Graduate Program, Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luís (SP-310), km 235, São Carlos, SP, CEP: 13565-905, Brazil bChemical Engineering Department/UFSCar, Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luís (SP-310), km 235, São Carlos, SP, CEP: 13565-905, Brazil cInstituto Alberto Luiz de Coimbra de Pós-Graduação e Pesquisa de Engenharia, COPPE, Universidade Federal do Rio de Janeiro, UFRJ, Cidade Universitária, Rio de Janeiro, RJ, CEP: 21941-972, Brazil dChemical Engineering Department, Universidade Estadual de Maringá, Av. Colombo, 5790 Bloco D90, CEP 87020-290, Maringá, PR, Brazil eInstitut de Mathématiques de Bourgogne (IMB), Université de Bourgogne, 9 avenue Alain Savary, 21078 Dijon cedex, France
的j·p·亨利·r·索萨Jr ., a、b a . r .西奇,c a d s m a s Ravagnani,芭芭拉,b和b和c Costad * aChemical工程研究生计划,联邦大学圣卡洛斯(UFSCar),华盛顿·路易斯(SP - -310)高速公路235公里,是卡洛斯SP -905,邮编:13565,巴西bChemical工程部门/ UFSCar联邦大学圣卡洛斯(UFSCar),华盛顿·路易斯(SP - -310)高速公路235公里,是卡洛斯SP,邮编:13565年到-905年,巴西cInstituto阿尔贝托·鲁兹Coimbra的研究生和工程研究,COPPE,巴西里约热内卢联邦大学的校园,在里约热内卢,r . j .,邮政编码:21941 -972,巴西dChemical工程部门,巴西州立大学哥伦布大道D90 5790多座,我87020年到-290年,巴西,因此,巴西eInstitut勃艮地的数学(IMB)勃艮第大学9大道21078第戎cedex阿兰•Savary法国
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Pub Date : 2020-01-01DOI: 10.15255/cabeq.2019.1614
Z. Pilić, Ivana Martinović
The inhibition of copper corrosion by Helichrysum italicum extract (HI) in simulated acid rain was investigated using electrochemical techniques. Results indicate an increase in corrosion inhibition efficiency with the HI extract concentration. The inhibitive process was assumed to occur via adsorption of the extract on the metal surface. The thermodynamic data indicated physical adsorption and followed the Freundlich isotherm. The effect of temperature on the copper corrosion was studied. The value of the activation energy confirmed physisorption of extract molecules on the copper surface. The concentration of Cu ions released into solution, measured by atomic absorption spectrometry, was in accordance with the electrochemical results.
{"title":"Effect of Helichrysum italicum on the Corrosion of Copper in Simulated Acid Rain Solution","authors":"Z. Pilić, Ivana Martinović","doi":"10.15255/cabeq.2019.1614","DOIUrl":"https://doi.org/10.15255/cabeq.2019.1614","url":null,"abstract":"The inhibition of copper corrosion by Helichrysum italicum extract (HI) in simulated acid rain was investigated using electrochemical techniques. Results indicate an increase in corrosion inhibition efficiency with the HI extract concentration. The inhibitive process was assumed to occur via adsorption of the extract on the metal surface. The thermodynamic data indicated physical adsorption and followed the Freundlich isotherm. The effect of temperature on the copper corrosion was studied. The value of the activation energy confirmed physisorption of extract molecules on the copper surface. The concentration of Cu ions released into solution, measured by atomic absorption spectrometry, was in accordance with the electrochemical results.","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67063613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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