Afinidad. Journal of Chemical Engineering Theoretical and Applied Chemistry最新文献_第6页

Remoción de colorantes en aguas procedentes de la industria textil mediante el uso de biocarbón 利用生物炭去除纺织工业废水中的染料

Afinidad. Journal of Chemical Engineering Theoretical and Applied Chemistry Pub Date : 2022-07-18 DOI: 10.55815/401287

Carolina Gallego Ramírez, Ainhoa Rubio Clemente

{"title":"Remoción de colorantes en aguas procedentes de la industria textil mediante el uso de biocarbón","authors":"Carolina Gallego Ramírez, Ainhoa Rubio Clemente","doi":"10.55815/401287","DOIUrl":"https://doi.org/10.55815/401287","url":null,"abstract":"Los colorantes son un grupo de contaminantes de creciente preocupación debido a la toxicidad asociada a su presencia en el ambiente y a su carácter recalcitrante al momento de ser degradados por medio de procesos convencionales con los que operan las plantas de tratamientos de aguas residuales. En este sentido, el biocarbón, considerado como un sub-producto derivado del proceso de conversión termoquímica de la biomasa, se posiciona como un tratamiento alternativo gracias a sus propiedades fisicoquímicas, como lo son su gran superficie específica y grupos funcionales. En este trabajo, se presenta el concepto, clasificación y propiedades de los colorantes, así como los efectos adversos que causan estos contaminantes en los ecosistemas acuáticos. Adicionalmente, se exponen los tratamientos usados en la remoción de colorantes del agua residual, haciendo énfasis en el uso del biocarbón como tecnología alternativa. Finalmente, se presenta la relación costo-eficiencia del biocarbón, teniendo en cuenta su capacidad de reusabilidad. Con este trabajo, se abren nuevos horizontes en el uso del biocarbón para el tratamiento de aguas contaminadas, contribuyendo a la economía circular y al tan anhelado desarrollo sostenible.","PeriodicalId":263806,"journal":{"name":"Afinidad. Journal of Chemical Engineering Theoretical and Applied Chemistry","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126667214","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

On the environmental and economic issues associated with the Jatropha curcas shell gasification to heat and electricity for biodiesel production 麻疯树壳气化供热发电生产生物柴油的环境与经济问题

Afinidad. Journal of Chemical Engineering Theoretical and Applied Chemistry Pub Date : 2022-07-18 DOI: 10.55815/401271

P. A. Rodríguez Ramos, Indira Tobío Pérez, Jesús Suárez-Hernández, R. Piloto-Rodríguez, S. Pohl

{"title":"On the environmental and economic issues associated with the Jatropha curcas shell gasification to heat and electricity for biodiesel production","authors":"P. A. Rodríguez Ramos, Indira Tobío Pérez, Jesús Suárez-Hernández, R. Piloto-Rodríguez, S. Pohl","doi":"10.55815/401271","DOIUrl":"https://doi.org/10.55815/401271","url":null,"abstract":"The present work is focused on the use of Jatropha curcas biomass (shell), as feed to gasification systems coupled to a diesel engine for electricity generation. The scope of this research is to analyze the environmental and economic effects of the integration of a gasification system to a biodiesel plant. The environmental impacts are quantified by a Life Cycle Assessment and the economy is assessed based on the Net Present Value, Internal Rate of Return, Investment Recovery Period models and the Levelized cost of electricity. The results demonstrate that a gasification system, using this biomass as a source of electricity generation, is a promising alternative for energy supply, with good economic effect. Estimated efficiencies are: Net Present Value > 0, Internal Rate of Return > 10%/yr and Investment Recovery Period = 2.08 years, representing very good outcomes for this kind of system. Nevertheless, the project exhibits a very low Levelized Cost of Electricity of 0.054 USD/kWh. From the environmental point of view, there is not critical step during the whole life cycle of electricity generation from Jatropha curcas biomass.negative environmental impacts were found for breathing-inorganics and acidification-eutrophication, but both at negligible levels.","PeriodicalId":263806,"journal":{"name":"Afinidad. Journal of Chemical Engineering Theoretical and Applied Chemistry","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123572328","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: 2

Simulation of an anaerobic digestion system for agricultural residuals generated in the province of Manabí Manabí省农业废弃物厌氧消化系统的模拟

Afinidad. Journal of Chemical Engineering Theoretical and Applied Chemistry Pub Date : 2022-07-18 DOI: 10.55815/400722

Luis Ángel Martínez-Balderramo, Steven David Cheme-Rodríguez, R. Baquerizo-Crespo, M. Riera

{"title":"Simulation of an anaerobic digestion system for agricultural residuals generated in the province of Manabí","authors":"Luis Ángel Martínez-Balderramo, Steven David Cheme-Rodríguez, R. Baquerizo-Crespo, M. Riera","doi":"10.55815/400722","DOIUrl":"https://doi.org/10.55815/400722","url":null,"abstract":"The agricultural sector each year generates a large amount of organic waste, which generally does not receive proper management, producing environmental pollution. Rice straw and banana peel (BP) are among the most produced agricultural residues in Manabí, Ecuador. Anaerobic digestion is an ideal alternative for the treatment of these residuals, the purpose of which is to produce methane. The objective of this work is to propose a model for estimating methane yield from anaerobic digestion of organic waste generated from the elemental characterization. The developed dynamic model is based in the consumption of volatile solids (VS) according to first order kinetics. MATLAB® was the software used for the implementation of the model. The statistical criteria for the model implementation were Root Mean Square of Errors (RMSE) and Average Relative Error (ARE). It was possible to represent the anaerobic digestion process of various organic substrates by using the dynamic model based on VS consumption with RMSE values lower than 0.13. Another aspect considered is the estimation of the annual energy generation (48.59 GWh) and fuel savings (3 ~ 7.5 million USD/year) from the results of the model. Likewise, a factor proposal for the evaluation of the residual and the generation of methane with respect to its biodegradability.","PeriodicalId":263806,"journal":{"name":"Afinidad. Journal of Chemical Engineering Theoretical and Applied Chemistry","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129730467","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

Microencapsulación de aceites vegetales mediante secado por aspersión 喷雾干燥法对植物油进行微胶囊化

Afinidad. Journal of Chemical Engineering Theoretical and Applied Chemistry Pub Date : 2022-07-18 DOI: 10.55815/400725

L. M. Rodríguez-Hernández, Yojhansel Aragüez-Fortes, J. Pino

引用次数: 0

The essential oil of Mentha viridis L, chemical characterization and the relationship with its biological activities 薄荷精油的化学性质及其与生物活性的关系

Afinidad. Journal of Chemical Engineering Theoretical and Applied Chemistry Pub Date : 2022-07-18 DOI: 10.55815/401284

Walter Quezada Moreno, W. Quezada-Torres, Moraima Cristina Mera-Aguas, R. Medina-Litardo, Marcia Yomara Proaño Molina

{"title":"The essential oil of Mentha viridis L, chemical characterization and the relationship with its biological activities","authors":"Walter Quezada Moreno, W. Quezada-Torres, Moraima Cristina Mera-Aguas, R. Medina-Litardo, Marcia Yomara Proaño Molina","doi":"10.55815/401284","DOIUrl":"https://doi.org/10.55815/401284","url":null,"abstract":"The objective of the study was to determine the yield and quality of the essential oil of Mentha viridis L., obtained by water-vapor distillation using cohobation. The oil extraction process required an experimental design DCA of 33 with the application of factors such as sample moisture, water volume and extraction time in three levels (high, medium and low). These factors, evaluated by the oil yield response variable, were analyzed using the statistical software statgraphics plus. For the oil components, a gas chromatograph coupled to a mass detector (GC-MS) was used. Extraction results show significance to the oil yield applied to dehydrated leaves, extraction times and amount of water at medium and high levels. The volatile chemical composition of the sample essential oil revealed the presence of 34 components, highlighting DL-carvone with 36.5%, anethole with 15.3%, germacrene D with 8.8% and limonene with 7.2%; Consequently, it is concluded that these components provide aromatic and antioxidant characteristics for functional fragrances to be used in pharmaceutical, cosmetic and food industries. Due to its biological activity, the essential oil is also recommended for the agricultural sector as a bactericidal and insecticidal inhibitor, with prospects for research and immediate application.","PeriodicalId":263806,"journal":{"name":"Afinidad. Journal of Chemical Engineering Theoretical and Applied Chemistry","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123798332","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

Nickel and chromium removal efficiency using a horizontal subsurface wetland 卧式地下湿地对镍和铬的去除效果

Afinidad. Journal of Chemical Engineering Theoretical and Applied Chemistry Pub Date : 2022-07-18 DOI: 10.55815/401361

Luis Ernesto Morera Hernández, Maira María Pérez Villar

引用次数: 0

Conversion of some 2-arylmethylene-4-oxobutanhydrazides into pyridazinones, pyrrolones and pyrazolones 某些2-芳基亚甲基-4-氧丁酰肼转化为吡嗪酮、吡罗酮和吡唑酮

Afinidad. Journal of Chemical Engineering Theoretical and Applied Chemistry Pub Date : 2022-07-18 DOI: 10.55815/401365

M. Soliman, Maryam Mohammad El-Ganainy, A. A. Hassanien, N. Mahmoud

引用次数: 0

Bioactividad y biocompatibilidad de compósitos de zirconia estabilizada con Y/ hidroxiapatita-Cu, Fosfato Tricálcico-Ag o Fosfato Tricálcico-Ga y /羟基磷灰石-铜、磷酸三钙- ag或磷酸三钙- ga稳定氧化锆复合材料的生物活性和生物相容性

Afinidad. Journal of Chemical Engineering Theoretical and Applied Chemistry Pub Date : 2022-07-18 DOI: 10.55815/401133

M. E. Álvarez-Monsiváis, B. R. Cruz-Ortiz, I. Olivas-Armendáriz, A. Sáenz-Galindo, S. Solís-Rosales, E. M. Múzquiz-Ramos

{"title":"Bioactividad y biocompatibilidad de compósitos de zirconia estabilizada con Y/ hidroxiapatita-Cu, Fosfato Tricálcico-Ag o Fosfato Tricálcico-Ga","authors":"M. E. Álvarez-Monsiváis, B. R. Cruz-Ortiz, I. Olivas-Armendáriz, A. Sáenz-Galindo, S. Solís-Rosales, E. M. Múzquiz-Ramos","doi":"10.55815/401133","DOIUrl":"https://doi.org/10.55815/401133","url":null,"abstract":"La compatibilidad biológica de implantes óseos y dentales está limitada, desde que se coloca hasta después de un largo tiempo de estar implantado, debido a su baja resistencia a infecciones atribuidas a una degradación rápida del implante al estar en presencia de fluidos fisiológicos. Es por esto, que en la presente investigación se desarrollaron materiales compuestos de hidroxiapatita-zirconia (HA-ZrO2), en donde la zirconia se estabilizó con ytrio y la hidroxiapatita se dopó con plata, cobre y galio, para otorgarle al compósito propiedades biológicas que no presenta la zirconia como tal. Cada componente del material compuesto le confiere diferentes características; como la hidroxiapatita (HA) que le proporciona un comportamiento bioactivo, la ZrO2 estabilizada con ytrio le confiere excelente resistencia; mientras que la Ag, Ga y Cu le proveen propiedades antimicrobianas. Para la obtención de estos sistemas, se sintetizaron los materiales por el método de Pechini y de precipitación química, posteriormente se obtuvieron los compósitos y se probaron en estudios de bioactividad, hemólisis, viabilidad celular por el método de MTT y adhesión de osteoblastos por tinción. Se obtuvieron materiales bioactivos, no hemolíticos, no tóxicos y con adhesión de células al compósito. Estos novedosos materiales pueden ser útiles para implantes óseos y dentales.","PeriodicalId":263806,"journal":{"name":"Afinidad. Journal of Chemical Engineering Theoretical and Applied Chemistry","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125188703","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

Tomato skin drying 番茄皮干燥

Afinidad. Journal of Chemical Engineering Theoretical and Applied Chemistry Pub Date : 2022-07-18 DOI: 10.55815/401092

Yanet Sariego Toledo, Rafael Cristobal Carnero Macías, Beatriz Zumalacarregui de Cardenas, Luis Cruz Viera

引用次数: 0

Obtención de un composito a base de tela no tejida de Nylon 6 con extractos de romero asistido con ultrasonido con aplicaciones biológicas 以尼龙6无纺布为基础的复合材料与迷迭香提取物辅助超声与生物应用

Afinidad. Journal of Chemical Engineering Theoretical and Applied Chemistry Pub Date : 2022-07-18 DOI: 10.55815/400718

Emmanuel Flores-Villa, Wendy Yaneth Villastrigo López, R. I. Narro-Céspedes, Sandra Cecilia Esparza-González, Miriam Desirée DÁVILA-MEDINA, C. Cabello-Alvarado, A. O. Castañeda-Facio, A. Sáenz-Galindo

{"title":"Obtención de un composito a base de tela no tejida de Nylon 6 con extractos de romero asistido con ultrasonido con aplicaciones biológicas","authors":"Emmanuel Flores-Villa, Wendy Yaneth Villastrigo López, R. I. Narro-Céspedes, Sandra Cecilia Esparza-González, Miriam Desirée DÁVILA-MEDINA, C. Cabello-Alvarado, A. O. Castañeda-Facio, A. Sáenz-Galindo","doi":"10.55815/400718","DOIUrl":"https://doi.org/10.55815/400718","url":null,"abstract":"La importancia actual de los materiales poliméricos en la industria automotriz permite a la presente investigación reportar la obtención de un composito polimérico a base de tela no tejida de nylon 6 con extractos de R. officinalis. La obtención de los extractos con etanol fue asistida por ultrasonido obteniendo rendimientos de hasta 12.08 % en peso; se caracterizaron por espectroscopia de FT-IR (ATR) identificando señales a 3300 cm-1 correspondientes a los estiramientos de O-H del grupo alcohol y/o de la vibración de ácido carboxílico, en 1750 a 1650 cm-1 estiramiento del enlace carbonilo C=O, un doblete a 1400 y 1450 cm-1 de estiramientos de dimetilos cerca de carbonilos y la torsión C-H y bandas en valores de 700 cm-1 de vibraciones de torsión del enlace C-OH; en HPLC se identificaron familias de dímeros de ácido metoxicinámico, dímeros de ácido hidroxibenzóico, flavonas, metoxiflavonas y antocianinas; se hicieron pruebas de solubilidad y antibacterianas, con inhibición de S. aureus. Los extractos incorporados a la tela no tejida de nylon 6 se caracterizaron por FT-IR (ATR) mostrando señales correspondientes a los grupos funcionales de metabolitos secundarios del romero y a la estructura del nylon 6; sus termogramas muestran pérdidas del 5 % en peso a temperaturas de 250 a 400 °C.","PeriodicalId":263806,"journal":{"name":"Afinidad. Journal of Chemical Engineering Theoretical and Applied Chemistry","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133753292","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